diff --git a/.github/generate_change_log.sh b/.github/generate_change_log.sh
index 9caf6f2023..b50893ddfa 100755
--- a/.github/generate_change_log.sh
+++ b/.github/generate_change_log.sh
@@ -24,26 +24,20 @@ TESTNET_ZIP_SUM="$(checksum ./testnet.zip)"
 LINUX_BIN_SUM="$(checksum ./linux/geth)"
 MAC_BIN_SUM="$(checksum ./macos/geth)"
 WINDOWS_BIN_SUM="$(checksum ./windows/geth.exe)"
-ARM5_BIN_SUM="$(checksum ./arm5/geth-linux-arm-5)"
-ARM6_BIN_SUM="$(checksum ./arm6/geth-linux-arm-6)"
-ARM7_BIN_SUM="$(checksum ./arm7/geth-linux-arm-7)"
 ARM64_BIN_SUM="$(checksum ./arm64/geth-linux-arm64)"
 OUTPUT=$(cat <<-END
 ## Changelog\n
 ${CHANGE_LOG}\n
 ## Assets\n
-|    Assets    | Sha256 Checksum  |\n
-| :-----------: |------------|\n
-| mainnet.zip | ${MAINNET_ZIP_SUM} |\n
-| testnet.zip | ${TESTNET_ZIP_SUM} |\n
-| geth_linux | ${LINUX_BIN_SUM} |\n
-| geth_mac  | ${MAC_BIN_SUM} |\n
-| geth_windows  | ${WINDOWS_BIN_SUM} |\n
-| geth_linux_arm-5  | ${ARM5_BIN_SUM} |\n
-| geth_linux_arm-6  | ${ARM6_BIN_SUM} |\n
-| geth_linux_arm-7  | ${ARM7_BIN_SUM} |\n
+|    Assets    | Sha256 Checksum  |
+| :-----------: |------------|
+| mainnet.zip | ${MAINNET_ZIP_SUM} |
+| testnet.zip | ${TESTNET_ZIP_SUM} |
+| geth_linux | ${LINUX_BIN_SUM} |
+| geth_mac  | ${MAC_BIN_SUM} |
+| geth_windows  | ${WINDOWS_BIN_SUM} |
 | geth_linux_arm64  | ${ARM64_BIN_SUM} |\n
 END
 )
 
-echo -e ${OUTPUT}
\ No newline at end of file
+echo -e "${OUTPUT}"
\ No newline at end of file
diff --git a/.github/workflows/unit-test.yml b/.github/workflows/unit-test.yml
index d692c2f0d8..f4d9e053f2 100644
--- a/.github/workflows/unit-test.yml
+++ b/.github/workflows/unit-test.yml
@@ -45,6 +45,8 @@ jobs:
 
     - name: Unit Test
       env:
+        CGO_CFLAGS: "-O -D__BLST_PORTABLE__"
+        CGO_CFLAGS_ALLOW: "-O -D__BLST_PORTABLE__"
         ANDROID_HOME: "" # Skip android test
       run: |
         go mod download
diff --git a/.gitignore b/.gitignore
index 0271db9ecd..d98f7c9227 100644
--- a/.gitignore
+++ b/.gitignore
@@ -50,3 +50,5 @@ profile.cov
 **/yarn-error.log
 cmd/geth/node/
 cmd/geth/__debug_bin
+cmd/bootnode/bootnode
+graphql/__debug_bin
diff --git a/CHANGELOG.md b/CHANGELOG.md
index ee85feb6ef..780fe2e162 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,4 +1,40 @@
 # Changelog
+## v1.2.0
+FEATURE
+* [\#936](https://github.com/bnb-chain/bsc/pull/936) BEP-126: Introduce Fast Finality Mechanism
+* [\#1325](https://github.com/bnb-chain/bsc/pull/1325) genesis: add BEP174 changes to relayer contract
+* [\#1357](https://github.com/bnb-chain/bsc/pull/1357) Integration API for EIP-4337 bundler with an L2 validator/sequencer
+* [\#1463](https://github.com/bnb-chain/bsc/pull/1463) BEP-221: implement cometBFT light block validation
+* [\#1493](https://github.com/bnb-chain/bsc/pull/1493) bep: update the bytecode of luban fork after the contract release
+
+IMPROVEMENT
+* [\#1486](https://github.com/bnb-chain/bsc/pull/1486) feature: remove diff protocol registration
+* [\#1434](https://github.com/bnb-chain/bsc/pull/1434) fix: improvements after testing fast finality
+
+BUGFIX
+* [\#1430](https://github.com/bnb-chain/bsc/pull/1430) docker: upgrade alpine version & remove apks version
+* [\#1458](https://github.com/bnb-chain/bsc/pull/1458) cmd/faucet: clear reqs list when reorg to lower nonce
+* [\#1484](https://github.com/bnb-chain/bsc/pull/1484) fix: a deadlock caused by bsc protocol handeshake timeout
+
+## v1.1.23
+BUGFIX
+* [\#1464](https://github.com/bnb-chain/bsc/pull/1464) fix: panic on using WaitGroup after it is freed
+
+## v1.1.22
+FEATURE
+* [\#1361](https://github.com/bnb-chain/bsc/pull/1361) cmd/faucet: merge ipfaucet2 branch to develop
+
+IMPROVEMENT
+* [\#1412](https://github.com/bnb-chain/bsc/pull/1412) fix: init-network with config.toml without setting TimeFormat
+* [\#1401](https://github.com/bnb-chain/bsc/pull/1401) log: support custom time format configuration
+* [\#1382](https://github.com/bnb-chain/bsc/pull/1382) consnesus/parlia: abort sealing when block in the same height has updated
+* [\#1383](https://github.com/bnb-chain/bsc/pull/1383) miner: no need to broadcast sidechain header mined by this validator
+
+BUGFIX
+* [\#1379](https://github.com/bnb-chain/bsc/pull/1379) UT: fix some flaky tests
+* [\#1403](https://github.com/bnb-chain/bsc/pull/1403) Makefile: fix devtools install error
+* [\#1381](https://github.com/bnb-chain/bsc/pull/1381) fix: snapshot generation issue after chain reinit from a freezer
+
 ## v1.1.21
 FEATURE
 * [\#1389](https://github.com/bnb-chain/bsc/pull/1389) upgrade: update the fork height of planck upgrade on mainnet
@@ -55,7 +91,6 @@ BUGFIX
 
 ## v1.1.18
 IMPROVEMENT
-
 * [\#1209](https://github.com/bnb-chain/bsc/pull/1209) metrics: add build info into metrics server
 * [\#1204](https://github.com/bnb-chain/bsc/pull/1204) worker: NewTxsEvent and triePrefetch reuse in mining task
 * [\#1195](https://github.com/bnb-chain/bsc/pull/1195) hardfork: update Gibbs fork height and system contract code
diff --git a/Dockerfile b/Dockerfile
index 2fc8527ab6..316cc2896e 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -6,17 +6,21 @@ ARG BUILDNUM=""
 # Build Geth in a stock Go builder container
 FROM golang:1.19-alpine as builder
 
-RUN apk add --no-cache make gcc musl-dev linux-headers git bash
+RUN apk add --no-cache make cmake gcc musl-dev linux-headers git bash build-base libc-dev
 # Get dependencies - will also be cached if we won't change go.mod/go.sum
 COPY go.mod /go-ethereum/
 COPY go.sum /go-ethereum/
 RUN cd /go-ethereum && go mod download
 
 ADD . /go-ethereum
+
+# For blst
+ENV CGO_CFLAGS="-O -D__BLST_PORTABLE__" 
+ENV CGO_CFLAGS_ALLOW="-O -D__BLST_PORTABLE__"
 RUN cd /go-ethereum && go run build/ci.go install ./cmd/geth
 
 # Pull Geth into a second stage deploy alpine container
-FROM alpine:3.16.0
+FROM alpine:3.17
 
 ARG BSC_USER=bsc
 ARG BSC_USER_UID=1000
@@ -26,9 +30,9 @@ ENV BSC_HOME=/bsc
 ENV HOME=${BSC_HOME}
 ENV DATA_DIR=/data
 
-ENV PACKAGES ca-certificates~=20220614-r0 jq~=1.6 \
-  bash~=5.1.16-r2 bind-tools~=9.16.37 tini~=0.19.0 \
-  grep~=3.7 curl~=7.83.1 sed~=4.8-r0
+ENV PACKAGES ca-certificates jq \
+  bash bind-tools tini \
+  grep curl sed gcc
 
 RUN apk add --no-cache $PACKAGES \
   && rm -rf /var/cache/apk/* \
@@ -56,4 +60,4 @@ USER ${BSC_USER_UID}:${BSC_USER_GID}
 # rpc ws graphql
 EXPOSE 8545 8546 8547 30303 30303/udp
 
-ENTRYPOINT ["/sbin/tini", "--", "./docker-entrypoint.sh"]
+ENTRYPOINT ["/sbin/tini", "--", "./docker-entrypoint.sh"]
\ No newline at end of file
diff --git a/Dockerfile.alltools b/Dockerfile.alltools
index 3205b412e4..c3cfed9130 100644
--- a/Dockerfile.alltools
+++ b/Dockerfile.alltools
@@ -13,6 +13,9 @@ COPY go.sum /go-ethereum/
 RUN cd /go-ethereum && go mod download
 
 ADD . /go-ethereum
+# For blst
+ENV CGO_CFLAGS="-O -D__BLST_PORTABLE__" 
+ENV CGO_CFLAGS_ALLOW="-O -D__BLST_PORTABLE__"
 RUN cd /go-ethereum && go run build/ci.go install
 
 # Pull all binaries into a second stage deploy alpine container
diff --git a/Makefile b/Makefile
index b35a4a9e4d..adda257e70 100644
--- a/Makefile
+++ b/Makefile
@@ -4,7 +4,6 @@
 
 .PHONY: geth android ios evm all test truffle-test clean
 .PHONY: docker
-.PHONY: geth-linux-arm geth-linux-arm64 geth-linux-arm5 geth-linux-arm6 geth-linux-arm7
 
 GOBIN = ./build/bin
 GO ?= latest
@@ -17,23 +16,6 @@ geth:
 	@echo "Done building."
 	@echo "Run \"$(GOBIN)/geth\" to launch geth."
 
-ldflags = -X main.gitCommit=$(GIT_COMMIT) \
-          -X main.gitDate=$(GIT_COMMIT_DATE)
-
-geth-linux-arm: geth-linux-arm5 geth-linux-arm6 geth-linux-arm7 geth-linux-arm64
-
-geth-linux-arm5:
-	env GO111MODULE=on GOARCH=arm GOARM=5 GOOS=linux go build -ldflags="$(ldflags)" -o build/bin/geth-linux-arm-5 ./cmd/geth
-
-geth-linux-arm6:
-	env GO111MODULE=on GOARCH=arm GOARM=6 GOOS=linux go build -ldflags="$(ldflags)" -o build/bin/geth-linux-arm-6 ./cmd/geth
-
-geth-linux-arm7:
-	env GO111MODULE=on GOARCH=arm GOARM=7 GOOS=linux go build -ldflags="$(ldflags)" -o build/bin/geth-linux-arm-7 ./cmd/geth
-
-geth-linux-arm64:
-	env GO111MODULE=on GOARCH=arm64 GOOS=linux go build -ldflags="$(ldflags)" -o build/bin/geth-linux-arm64 ./cmd/geth
-
 all:
 	$(GORUN) build/ci.go install
 
@@ -74,7 +56,7 @@ clean:
 
 devtools:
 	env GOBIN= go install golang.org/x/tools/cmd/stringer@latest
-	env GOBIN= go install github.com/kevinburke/go-bindata/go-bindata@latest
+	env GOBIN= go install github.com/kevinburke/go-bindata@latest
 	env GOBIN= go install github.com/fjl/gencodec@latest
 	env GOBIN= go install github.com/golang/protobuf/protoc-gen-go@latest
 	env GOBIN= go install ./cmd/abigen
diff --git a/accounts/abi/bind/backend.go b/accounts/abi/bind/backend.go
index c16990f395..1a03d13578 100644
--- a/accounts/abi/bind/backend.go
+++ b/accounts/abi/bind/backend.go
@@ -24,6 +24,7 @@ import (
 	"github.com/ethereum/go-ethereum"
 	"github.com/ethereum/go-ethereum/common"
 	"github.com/ethereum/go-ethereum/core/types"
+	"github.com/ethereum/go-ethereum/internal/ethapi"
 )
 
 var (
@@ -96,6 +97,9 @@ type ContractTransactor interface {
 
 	// SendTransaction injects the transaction into the pending pool for execution.
 	SendTransaction(ctx context.Context, tx *types.Transaction) error
+
+	// SendTransactionConditional injects the conditional transaction into the pending pool for execution after verification.
+	SendTransactionConditional(ctx context.Context, tx *types.Transaction, opts ethapi.TransactionOpts) error
 }
 
 // ContractFilterer defines the methods needed to access log events using one-off
diff --git a/accounts/abi/bind/backends/simulated.go b/accounts/abi/bind/backends/simulated.go
index f8ceec8838..34f23e8330 100644
--- a/accounts/abi/bind/backends/simulated.go
+++ b/accounts/abi/bind/backends/simulated.go
@@ -40,6 +40,7 @@ import (
 	"github.com/ethereum/go-ethereum/eth/filters"
 	"github.com/ethereum/go-ethereum/ethdb"
 	"github.com/ethereum/go-ethereum/event"
+	"github.com/ethereum/go-ethereum/internal/ethapi"
 	"github.com/ethereum/go-ethereum/log"
 	"github.com/ethereum/go-ethereum/params"
 	"github.com/ethereum/go-ethereum/rpc"
@@ -677,6 +678,18 @@ func (b *SimulatedBackend) SendTransaction(ctx context.Context, tx *types.Transa
 	return nil
 }
 
+// SendTransaction updates the pending block to include the given transaction.
+func (b *SimulatedBackend) SendTransactionConditional(ctx context.Context, tx *types.Transaction, opts ethapi.TransactionOpts) error {
+	state, err := b.blockchain.State()
+	if err != nil {
+		return err
+	}
+	if err := opts.Check(b.pendingBlock.NumberU64(), b.pendingBlock.Time(), state); err != nil {
+		return err
+	}
+	return b.SendTransaction(ctx, tx)
+}
+
 // FilterLogs executes a log filter operation, blocking during execution and
 // returning all the results in one batch.
 //
@@ -826,11 +839,22 @@ type filterBackend struct {
 func (fb *filterBackend) ChainDb() ethdb.Database  { return fb.db }
 func (fb *filterBackend) EventMux() *event.TypeMux { panic("not supported") }
 
-func (fb *filterBackend) HeaderByNumber(ctx context.Context, block rpc.BlockNumber) (*types.Header, error) {
-	if block == rpc.LatestBlockNumber {
+func (fb *filterBackend) HeaderByNumber(ctx context.Context, number rpc.BlockNumber) (*types.Header, error) {
+	switch number {
+	case rpc.PendingBlockNumber:
+		if block := fb.backend.pendingBlock; block != nil {
+			return block.Header(), nil
+		}
+		return nil, nil
+	case rpc.LatestBlockNumber:
 		return fb.bc.CurrentHeader(), nil
+	case rpc.FinalizedBlockNumber:
+		return fb.bc.CurrentFinalBlock(), nil
+	case rpc.SafeBlockNumber:
+		return fb.bc.CurrentSafeBlock(), nil
+	default:
+		return fb.bc.GetHeaderByNumber(uint64(number.Int64())), nil
 	}
-	return fb.bc.GetHeaderByNumber(uint64(block.Int64())), nil
 }
 
 func (fb *filterBackend) HeaderByHash(ctx context.Context, hash common.Hash) (*types.Header, error) {
@@ -869,10 +893,18 @@ func (fb *filterBackend) SubscribeNewTxsEvent(ch chan<- core.NewTxsEvent) event.
 	return nullSubscription()
 }
 
+func (fb *filterBackend) SubscribeNewVoteEvent(ch chan<- core.NewVoteEvent) event.Subscription {
+	return nullSubscription()
+}
+
 func (fb *filterBackend) SubscribeChainEvent(ch chan<- core.ChainEvent) event.Subscription {
 	return fb.bc.SubscribeChainEvent(ch)
 }
 
+func (fb *filterBackend) SubscribeFinalizedHeaderEvent(ch chan<- core.FinalizedHeaderEvent) event.Subscription {
+	return fb.bc.SubscribeFinalizedHeaderEvent(ch)
+}
+
 func (fb *filterBackend) SubscribeRemovedLogsEvent(ch chan<- core.RemovedLogsEvent) event.Subscription {
 	return fb.bc.SubscribeRemovedLogsEvent(ch)
 }
diff --git a/accounts/abi/bind/base_test.go b/accounts/abi/bind/base_test.go
index 08ba18f95e..0fe12cc9c6 100644
--- a/accounts/abi/bind/base_test.go
+++ b/accounts/abi/bind/base_test.go
@@ -30,6 +30,7 @@ import (
 	"github.com/ethereum/go-ethereum/common/hexutil"
 	"github.com/ethereum/go-ethereum/core/types"
 	"github.com/ethereum/go-ethereum/crypto"
+	"github.com/ethereum/go-ethereum/internal/ethapi"
 	"github.com/ethereum/go-ethereum/rlp"
 	"github.com/stretchr/testify/assert"
 )
@@ -74,6 +75,10 @@ func (mt *mockTransactor) SendTransaction(ctx context.Context, tx *types.Transac
 	return nil
 }
 
+func (mt *mockTransactor) SendTransactionConditional(ctx context.Context, tx *types.Transaction, opts ethapi.TransactionOpts) error {
+	return nil
+}
+
 type mockCaller struct {
 	codeAtBlockNumber         *big.Int
 	callContractBlockNumber   *big.Int
diff --git a/accounts/abi/bind/bind_test.go b/accounts/abi/bind/bind_test.go
index 5e3d0fccfe..051cf97a5c 100644
--- a/accounts/abi/bind/bind_test.go
+++ b/accounts/abi/bind/bind_test.go
@@ -2114,6 +2114,13 @@ func TestGolangBindings(t *testing.T) {
 	if out, err := replacer.CombinedOutput(); err != nil {
 		t.Fatalf("failed to replace tendermint dependency to bnb-chain source: %v\n%s", err, out)
 	}
+
+	replacer = exec.Command(gocmd, "mod", "edit", "-x", "-require", "github.com/cometbft/cometbft@v0.0.0", "-replace", "github.com/cometbft/cometbft=github.com/bnb-chain/greenfield-tendermint@v0.0.0-20230417032003-4cda1f296fb2") // Repo root
+	replacer.Dir = pkg
+	if out, err := replacer.CombinedOutput(); err != nil {
+		t.Fatalf("failed to replace cometbft dependency to bnb-chain source: %v\n%s", err, out)
+	}
+
 	tidier := exec.Command(gocmd, "mod", "tidy", "-compat=1.19")
 	tidier.Dir = pkg
 	if out, err := tidier.CombinedOutput(); err != nil {
diff --git a/beacon/engine/types.go b/beacon/engine/types.go
new file mode 100644
index 0000000000..ecdf67176c
--- /dev/null
+++ b/beacon/engine/types.go
@@ -0,0 +1,18 @@
+// Copyright 2022 The go-ethereum Authors
+// This file is part of the go-ethereum library.
+//
+// The go-ethereum library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Lesser General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// The go-ethereum library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU Lesser General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public License
+// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
+
+// just for prysm compile pass
+package engine
diff --git a/build/checksums.txt b/build/checksums.txt
index 1d2f1cba17..f781ba6b7d 100644
--- a/build/checksums.txt
+++ b/build/checksums.txt
@@ -14,44 +14,52 @@ e4032e7c52ebc48bad5c58ba8de0759b6091d9b1e59581a8a521c8c9d88dbe93 go1.19.5.linux-
 764871cbca841a99a24e239b63c68a4aaff4104658e3165e9ca450cac1fcbea3 go1.19.5.linux-s390x.tar.gz
 85a75555e82d8aa6f486d8d29491c593389682acce9f0c270090d5938eee30ef go1.19.5.windows-arm64.zip
 
-06456f980c7dfddfa6a30bf37a839843ee6564a2f9c4c9a8c1319dcdfeae0748  golangci-lint-1.50.1-linux-mips64le.tar.gz
-0f615fb8c364f6e4a213f2ed2ff7aa1fc2b208addf29511e89c03534067bbf57  golangci-lint-1.50.1-darwin-amd64.tar.gz
-10200bdf2a22d63a3b7f51d3b28e8b919b638b449b6d7867b26af008e33190b6  golangci-lint-1.50.1-linux-ppc64le.deb
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-81f3136bc111bfe51da293fafcee7642dbf998e2d25bf83d24a2ff18f8d1fc14  golangci-lint-1.50.1-linux-armv7.tar.gz
-8965c4327e742444bd4359bd952d42ebc645eba929d3826dd12adb8a14cc6248  golangci-lint-1.50.1-linux-386.tar.gz
-8c2da214884db02fb7f3d929672c515ae3b9d10defad4dd661c4ab365a316d68  golangci-lint-1.50.1-windows-amd64.zip
-96ae5ef97fec1487bcfd298e9341855ed6bf2f7d6a0bd9dfa758d2c1e4da96ec  golangci-lint-1.50.1-linux-mips64.tar.gz
-96ce5d9e7ae8134342e8c671ca357d92096b76673b61caf5524bfd6d772ee714  golangci-lint-1.50.1-linux-riscv64.deb
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diff --git a/build/ci.go b/build/ci.go
index d036b7d6eb..8ab3c0b966 100644
--- a/build/ci.go
+++ b/build/ci.go
@@ -24,19 +24,18 @@ Usage: go run build/ci.go <command> <command flags/arguments>
 
 Available commands are:
 
-   install    [ -arch architecture ] [ -cc compiler ] [ packages... ]                          -- builds packages and executables
-   test       [ -coverage ] [ packages... ]                                                    -- runs the tests
-   lint                                                                                        -- runs certain pre-selected linters
-   archive    [ -arch architecture ] [ -type zip|tar ] [ -signer key-envvar ] [ -signify key-envvar ] [ -upload dest ] -- archives build artifacts
-   importkeys                                                                                  -- imports signing keys from env
-   debsrc     [ -signer key-id ] [ -upload dest ]                                              -- creates a debian source package
-   nsis                                                                                        -- creates a Windows NSIS installer
-   aar        [ -local ] [ -sign key-id ] [-deploy repo] [ -upload dest ]                      -- creates an Android archive
-   xcode      [ -local ] [ -sign key-id ] [-deploy repo] [ -upload dest ]                      -- creates an iOS XCode framework
-   purge      [ -store blobstore ] [ -days threshold ]                                         -- purges old archives from the blobstore
+	install    [ -arch architecture ] [ -cc compiler ] [ packages... ]                          -- builds packages and executables
+	test       [ -coverage ] [ packages... ]                                                    -- runs the tests
+	lint                                                                                        -- runs certain pre-selected linters
+	archive    [ -arch architecture ] [ -type zip|tar ] [ -signer key-envvar ] [ -signify key-envvar ] [ -upload dest ] -- archives build artifacts
+	importkeys                                                                                  -- imports signing keys from env
+	debsrc     [ -signer key-id ] [ -upload dest ]                                              -- creates a debian source package
+	nsis                                                                                        -- creates a Windows NSIS installer
+	aar        [ -local ] [ -sign key-id ] [-deploy repo] [ -upload dest ]                      -- creates an Android archive
+	xcode      [ -local ] [ -sign key-id ] [-deploy repo] [ -upload dest ]                      -- creates an iOS XCode framework
+	purge      [ -store blobstore ] [ -days threshold ]                                         -- purges old archives from the blobstore
 
 For all commands, -n prevents execution of external programs (dry run mode).
-
 */
 package main
 
@@ -198,9 +197,10 @@ func main() {
 
 func doInstall(cmdline []string) {
 	var (
-		dlgo = flag.Bool("dlgo", false, "Download Go and build with it")
-		arch = flag.String("arch", "", "Architecture to cross build for")
-		cc   = flag.String("cc", "", "C compiler to cross build with")
+		dlgo   = flag.Bool("dlgo", false, "Download Go and build with it")
+		arch   = flag.String("arch", "", "Architecture to cross build for")
+		cc     = flag.String("cc", "", "C compiler to cross build with")
+		output = flag.String("o", "", "Output directory for build artifacts")
 	)
 	flag.CommandLine.Parse(cmdline)
 
@@ -213,7 +213,8 @@ func doInstall(cmdline []string) {
 
 	// Configure the build.
 	env := build.Env()
-	gobuild := tc.Go("build", buildFlags(env)...)
+	buildArgs := buildFlags(env)
+	gobuild := tc.Go("build", buildArgs...)
 
 	// arm64 CI builders are memory-constrained and can't handle concurrent builds,
 	// better disable it. This check isn't the best, it should probably
@@ -239,7 +240,11 @@ func doInstall(cmdline []string) {
 	for _, pkg := range packages {
 		args := make([]string, len(gobuild.Args))
 		copy(args, gobuild.Args)
-		args = append(args, "-o", executablePath(path.Base(pkg)))
+		outputPath := executablePath(path.Base(pkg))
+		if output != nil && *output != "" {
+			outputPath = *output
+		}
+		args = append(args, "-o", outputPath)
 		args = append(args, pkg)
 		build.MustRun(&exec.Cmd{Path: gobuild.Path, Args: args, Env: gobuild.Env})
 	}
@@ -338,7 +343,7 @@ func doLint(cmdline []string) {
 
 // downloadLinter downloads and unpacks golangci-lint.
 func downloadLinter(cachedir string) string {
-	const version = "1.50.1"
+	const version = "1.52.2"
 
 	csdb := build.MustLoadChecksums("build/checksums.txt")
 	arch := runtime.GOARCH
diff --git a/cmd/faucet/faucet.go b/cmd/faucet/faucet.go
index 639be86159..7c6eb1d781 100644
--- a/cmd/faucet/faucet.go
+++ b/cmd/faucet/faucet.go
@@ -90,9 +90,6 @@ var (
 	fixGasPrice        = flag.Int64("faucet.fixedprice", 0, "Will use fixed gas price if specified")
 	twitterTokenFlag   = flag.String("twitter.token", "", "Bearer token to authenticate with the v2 Twitter API")
 	twitterTokenV1Flag = flag.String("twitter.token.v1", "", "Bearer token to authenticate with the v1.1 Twitter API")
-
-	goerliFlag  = flag.Bool("goerli", false, "Initializes the faucet with Görli network config")
-	rinkebyFlag = flag.Bool("rinkeby", false, "Initializes the faucet with Rinkeby network config")
 )
 
 var (
@@ -115,7 +112,7 @@ func main() {
 	for i := 0; i < *tiersFlag; i++ {
 		// Calculate the amount for the next tier and format it
 		amount := float64(*payoutFlag) * math.Pow(2.5, float64(i))
-		amounts[i] = fmt.Sprintf("%s BNBs", strconv.FormatFloat(amount, 'f', -1, 64))
+		amounts[i] = fmt.Sprintf("0.%s BNBs", strconv.FormatFloat(amount, 'f', -1, 64))
 		if amount == 1 {
 			amounts[i] = strings.TrimSuffix(amounts[i], "s")
 		}
@@ -170,9 +167,13 @@ func main() {
 		log.Crit("Failed to render the faucet template", "err", err)
 	}
 	// Load and parse the genesis block requested by the user
-	genesis, err := getGenesis(genesisFlag, *goerliFlag, *rinkebyFlag)
+	blob, err := ioutil.ReadFile(*genesisFlag)
 	if err != nil {
-		log.Crit("Failed to parse genesis config", "err", err)
+		log.Crit("Failed to read genesis block contents", "genesis", *genesisFlag, "err", err)
+	}
+	genesis := new(core.Genesis)
+	if err = json.Unmarshal(blob, genesis); err != nil {
+		log.Crit("Failed to parse genesis block json", "err", err)
 	}
 	// Convert the bootnodes to internal enode representations
 	var enodes []*enode.Node
@@ -184,13 +185,13 @@ func main() {
 		}
 	}
 	// Load up the account key and decrypt its password
-	blob, err := ioutil.ReadFile(*accPassFlag)
+	blob, err = ioutil.ReadFile(*accPassFlag)
 	if err != nil {
 		log.Crit("Failed to read account password contents", "file", *accPassFlag, "err", err)
 	}
 	pass := strings.TrimSuffix(string(blob), "\n")
 
-	ks := keystore.NewKeyStore(filepath.Join(os.Getenv("HOME"), ".faucet", "keys"), keystore.StandardScryptN, keystore.StandardScryptP)
+	ks := keystore.NewKeyStore(filepath.Join(os.Getenv("HOME"), ".faucet", "keys_2"), keystore.StandardScryptN, keystore.StandardScryptP)
 	if blob, err = ioutil.ReadFile(*accJSONFlag); err != nil {
 		log.Crit("Failed to read account key contents", "file", *accJSONFlag, "err", err)
 	}
@@ -364,6 +365,11 @@ func (f *faucet) apiHandler(w http.ResponseWriter, r *http.Request) {
 
 	// Start tracking the connection and drop at the end
 	defer conn.Close()
+	ipsStr := r.Header.Get("X-Forwarded-For")
+	ips := strings.Split(ipsStr, ",")
+	if len(ips) < 2 {
+		return
+	}
 
 	f.lock.Lock()
 	wsconn := &wsConn{conn: conn}
@@ -460,7 +466,7 @@ func (f *faucet) apiHandler(w http.ResponseWriter, r *http.Request) {
 			form.Add("secret", *captchaSecret)
 			form.Add("response", msg.Captcha)
 
-			res, err := http.PostForm("https://www.google.com/recaptcha/api/siteverify", form)
+			res, err := http.PostForm("https://hcaptcha.com/siteverify", form)
 			if err != nil {
 				if err = sendError(wsconn, err); err != nil {
 					log.Warn("Failed to send captcha post error to client", "err", err)
@@ -499,6 +505,19 @@ func (f *faucet) apiHandler(w http.ResponseWriter, r *http.Request) {
 			address  common.Address
 		)
 		switch {
+		case strings.HasPrefix(msg.URL, "https://gist.github.com/"):
+			if err = sendError(wsconn, errors.New("GitHub authentication discontinued at the official request of GitHub")); err != nil {
+				log.Warn("Failed to send GitHub deprecation to client", "err", err)
+				return
+			}
+			continue
+		case strings.HasPrefix(msg.URL, "https://plus.google.com/"):
+			//lint:ignore ST1005 Google is a company name and should be capitalized.
+			if err = sendError(wsconn, errors.New("Google+ authentication discontinued as the service was sunset")); err != nil {
+				log.Warn("Failed to send Google+ deprecation to client", "err", err)
+				return
+			}
+			continue
 		case strings.HasPrefix(msg.URL, "https://twitter.com/"):
 			id, username, avatar, address, err = authTwitter(msg.URL, *twitterTokenV1Flag, *twitterTokenFlag)
 		case strings.HasPrefix(msg.URL, "https://www.facebook.com/"):
@@ -526,11 +545,20 @@ func (f *faucet) apiHandler(w http.ResponseWriter, r *http.Request) {
 			fund    bool
 			timeout time.Time
 		)
+
+		if ipTimeout := f.timeouts[ips[len(ips)-2]]; time.Now().Before(ipTimeout) {
+			if err = sendError(wsconn, fmt.Errorf("%s left until next allowance", common.PrettyDuration(time.Until(ipTimeout)))); err != nil { // nolint: gosimple
+				log.Warn("Failed to send funding error to client", "err", err)
+			}
+			f.lock.Unlock()
+			continue
+		}
+
 		if timeout = f.timeouts[id]; time.Now().After(timeout) {
 			var tx *types.Transaction
 			if msg.Symbol == "BNB" {
 				// User wasn't funded recently, create the funding transaction
-				amount := new(big.Int).Mul(big.NewInt(int64(*payoutFlag)), ether)
+				amount := new(big.Int).Div(new(big.Int).Mul(big.NewInt(int64(*payoutFlag)), ether), big.NewInt(10))
 				amount = new(big.Int).Mul(amount, new(big.Int).Exp(big.NewInt(5), big.NewInt(int64(msg.Tier)), nil))
 				amount = new(big.Int).Div(amount, new(big.Int).Exp(big.NewInt(2), big.NewInt(int64(msg.Tier)), nil))
 
@@ -578,6 +606,7 @@ func (f *faucet) apiHandler(w http.ResponseWriter, r *http.Request) {
 			grace := timeout / 288 // 24h timeout => 5m grace
 
 			f.timeouts[id] = time.Now().Add(timeout - grace)
+			f.timeouts[ips[len(ips)-2]] = time.Now().Add(timeout - grace)
 			fund = true
 		}
 		f.lock.Unlock()
@@ -638,6 +667,9 @@ func (f *faucet) refresh(head *types.Header) error {
 	f.lock.Lock()
 	f.head, f.balance = head, balance
 	f.price, f.nonce = price, nonce
+	if len(f.reqs) > 0 && f.reqs[0].Tx.Nonce() > f.nonce {
+		f.reqs = f.reqs[:0]
+	}
 	for len(f.reqs) > 0 && f.reqs[0].Tx.Nonce() < f.nonce {
 		f.reqs = f.reqs[1:]
 	}
@@ -799,7 +831,7 @@ func authTwitter(url string, tokenV1, tokenV2 string) (string, string, string, c
 	address := common.HexToAddress(string(regexp.MustCompile("0x[0-9a-fA-F]{40}").Find(body)))
 	if address == (common.Address{}) {
 		//lint:ignore ST1005 This error is to be displayed in the browser
-		return "", "", "", common.Address{}, errors.New("No Binance Smart Chain address found to fund")
+		return "", "", "", common.Address{}, errors.New("No BNB Smart Chain address found to fund")
 	}
 	var avatar string
 	if parts = regexp.MustCompile(`src="([^"]+twimg\.com/profile_images[^"]+)"`).FindStringSubmatch(string(body)); len(parts) == 2 {
@@ -925,7 +957,7 @@ func authFacebook(url string) (string, string, common.Address, error) {
 	address := common.HexToAddress(string(regexp.MustCompile("0x[0-9a-fA-F]{40}").Find(body)))
 	if address == (common.Address{}) {
 		//lint:ignore ST1005 This error is to be displayed in the browser
-		return "", "", common.Address{}, errors.New("No Binance Smart Chain address found to fund")
+		return "", "", common.Address{}, errors.New("No BNB Smart Chain address found to fund")
 	}
 	var avatar string
 	if parts = regexp.MustCompile(`src="([^"]+fbcdn\.net[^"]+)"`).FindStringSubmatch(string(body)); len(parts) == 2 {
@@ -941,19 +973,7 @@ func authNoAuth(url string) (string, string, common.Address, error) {
 	address := common.HexToAddress(regexp.MustCompile("0x[0-9a-fA-F]{40}").FindString(url))
 	if address == (common.Address{}) {
 		//lint:ignore ST1005 This error is to be displayed in the browser
-		return "", "", common.Address{}, errors.New("No Binance Smart Chain address found to fund")
+		return "", "", common.Address{}, errors.New("No BNB Smart Chain address found to fund")
 	}
 	return address.Hex() + "@noauth", "", address, nil
 }
-
-// getGenesis returns a genesis based on input args
-func getGenesis(genesisFlag *string, goerliFlag bool, rinkebyFlag bool) (*core.Genesis, error) {
-	switch {
-	case genesisFlag != nil:
-		var genesis core.Genesis
-		err := common.LoadJSON(*genesisFlag, &genesis)
-		return &genesis, err
-	default:
-		return nil, fmt.Errorf("no genesis flag provided")
-	}
-}
diff --git a/cmd/faucet/faucet.html b/cmd/faucet/faucet.html
index 849145a60d..4f299857ca 100644
--- a/cmd/faucet/faucet.html
+++ b/cmd/faucet/faucet.html
@@ -1,220 +1,249 @@
 <!DOCTYPE html>
 <html lang="en">
-<head>
-	<meta charset="utf-8">
-	<meta http-equiv="X-UA-Compatible" content="IE=edge">
-	<meta name="viewport" content="width=device-width, initial-scale=1">
-
-	<title>{{.Network}}: Faucet</title>
-
-	<link href="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/3.3.7/css/bootstrap.min.css" rel="stylesheet" />
-	<link href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/4.7.0/css/font-awesome.min.css" rel="stylesheet" />
-
-	<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.1.1/jquery.min.js"></script>
-	<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery-noty/2.4.1/packaged/jquery.noty.packaged.min.js"></script>
-	<script src="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/3.3.7/js/bootstrap.min.js"></script>
-	<script src="https://cdnjs.cloudflare.com/ajax/libs/moment.js/2.18.0/moment.min.js"></script>
-
-	<style>
-		.vertical-center {
-			min-height: 100%;
-			min-height: 100vh;
-			display: flex;
-			align-items: center;
-		}
-		.progress {
-			position: relative;
-		}
-		.progress span {
-			position: absolute;
-			display: block;
-			width: 100%;
-			color: white;
-		}
-		pre {
-			padding: 6px;
-			margin: 0;
-		}
-	</style>
-</head>
-
-<body>
-<div class="vertical-center">
-	<div class="container">
-		<div class="row" style="margin-bottom: 16px;">
-			<div class="col-lg-12">
-				<h1 style="text-align: center;"><i class="fa fa-bath" aria-hidden="true"></i> {{.Network}} Faucet</h1>
-			</div>
-		</div>
-		<div class="row">
-			<div class="col-lg-8 col-lg-offset-2">
-				<div class="input-group">
-					<input id="url" name="url" type="text" class="form-control" placeholder="Social network URL containing your Binance Smart Chain address...">
-					<span class="input-group-btn">
+	<head>
+		<meta charset="utf-8">
+		<meta http-equiv="X-UA-Compatible" content="IE=edge">
+		<meta name="viewport" content="width=device-width, initial-scale=1">
+
+		<title>{{.Network}}: Faucet</title>
+
+		<link href="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/3.3.7/css/bootstrap.min.css" rel="stylesheet" />
+		<link href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/4.7.0/css/font-awesome.min.css" rel="stylesheet" />
+
+		<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.1.1/jquery.min.js"></script>
+		<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery-noty/2.4.1/packaged/jquery.noty.packaged.min.js"></script>
+		<script src="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/3.3.7/js/bootstrap.min.js"></script>
+		<script src="https://cdnjs.cloudflare.com/ajax/libs/moment.js/2.18.0/moment.min.js"></script>
+
+		<style>
+			.vertical-center {
+				min-height: 100%;
+				min-height: 100vh;
+				display: flex;
+				align-items: center;
+			}
+			.progress {
+				position: relative;
+			}
+			.progress span {
+				position: absolute;
+				display: block;
+				width: 100%;
+				color: white;
+			 }
+			 pre {
+				 padding: 6px;
+				 margin: 0;
+			 }
+		</style>
+	</head>
+
+	<body>
+	<div id="recaptcha_element"></div>
+
+	<div id="contendBody" class="vertical-center">
+			<div class="container">
+				<div class="row" style="margin-bottom: 16px;">
+					<div class="col-lg-12">
+						<h1 style="text-align: center;"><i class="fa fa-bath" aria-hidden="true"></i> {{.Network}} Faucet</h1>
+					</div>
+				</div>
+				<div class="row">
+					<div class="col-lg-8 col-lg-offset-2">
+						<div class="input-group">
+							<input id="url" name="url" type="text" class="form-control" placeholder="Input your BNB Smart Chain address...">
+							<span class="input-group-btn">
 								<button class="btn btn-default dropdown-toggle" type="button" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">Give me BNB	<i class="fa fa-caret-down" aria-hidden="true"></i></button>
-				        <ul class="dropdown-menu dropdown-menu-right">{{range $idx, $amount := .Amounts}}
-				          <li><a style="text-align: center;" onclick="tier={{$idx}};symbol='BNB'; {{if $.Recaptcha}}grecaptcha.execute(){{else}}submit({{$idx}}){{end}}">{{$amount}}</a></li>{{end}}
+				        <ul class="dropdown-menu dropdown-menu-right">
+						  {{range $idx, $amount := .Amounts}}
+				          <li ><a style="text-align: center;" onclick="tier={{$idx}};symbol='BNB';submit()">{{$amount}}</a></li>{{end}}
 				        </ul>
 							</span>
-					<span class="input-group-btn">
+							<span class="input-group-btn">
 								<button class="btn btn-default dropdown-toggle" type="button" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">Peggy tokens<i class="fa fa-caret-down" aria-hidden="true"></i></button>
 				        <ul class="dropdown-menu dropdown-menu-right"> {{range $symbol, $bep2eInfo := .Bep2eInfos}}
-								<li><a style="text-align: center;" onclick="symbol={{$symbol}}; {{if $.Recaptcha}}grecaptcha.execute(){{else}}submitBep2e({{$symbol}}){{end}}">{{$bep2eInfo.AmountStr}} {{$symbol}}</a></li>{{end}}
+								<li><a style="text-align: center;" onclick="symbol={{$symbol}}; submit()">{{$bep2eInfo.AmountStr}} {{$symbol}}</a></li>{{end}}
 				        </ul>
 							</span>
-				</div>{{if .Recaptcha}}
-				<div class="g-recaptcha" data-sitekey="{{.Recaptcha}}" data-callback="submit" data-size="invisible"></div>{{end}}
-			</div>
-		</div>
-		<div class="row" style="margin-top: 32px;">
-			<div class="col-lg-6 col-lg-offset-3">
-				<div class="panel panel-small panel-default">
-					<div class="panel-body" style="padding: 0; overflow: auto; max-height: 300px;">
-						<table id="requests" class="table table-condensed" style="margin: 0;"></table>
+						</div>
 					</div>
-					<div class="panel-footer">
-						<table style="width: 100%"><tr>
-							<td style="text-align: center;"><i class="fa fa-rss" aria-hidden="true"></i> <span id="peers"></span> peers</td>
-							<td style="text-align: center;"><i class="fa fa-database" aria-hidden="true"></i> <span id="block"></span> blocks</td>
-							<td style="text-align: center;"><i class="fa fa-heartbeat" aria-hidden="true"></i> <span id="funds"></span> BNBs</td>
-							<td style="text-align: center;"><i class="fa fa-university" aria-hidden="true"></i> <span id="funded"></span> funded</td>
-						</tr></table>
+				</div>
+				<div class="row" style="margin-top: 32px;">
+						<div class="col-lg-6 col-lg-offset-3">
+						<div class="panel panel-small panel-default">
+							<div class="panel-body" style="padding: 0; overflow: auto; max-height: 300px;">
+								<table id="requests" class="table table-condensed" style="margin: 0;"></table>
+							</div>
+							<div class="panel-footer">
+								<table style="width: 100%"><tr>
+									<td style="text-align: center;"><i class="fa fa-rss" aria-hidden="true"></i> <span id="peers"></span> peers</td>
+									<td style="text-align: center;"><i class="fa fa-database" aria-hidden="true"></i> <span id="block"></span> blocks</td>
+									<td style="text-align: center;"><i class="fa fa-heartbeat" aria-hidden="true"></i> <span id="funds"></span> BNBs</td>
+									<td style="text-align: center;"><i class="fa fa-university" aria-hidden="true"></i> <span id="funded"></span> funded</td>
+								</tr></table>
+							</div>
+						</div>
+					</div>
+				</div>
+				<div class="row" style="margin-top: 32px;">
+					<div class="col-lg-12">
+						<h3>How does this work?</h3>
+						<p><a href="https://testnet.bscscan.com/address/0x6ce8dA28E2f864420840cF74474eFf5fD80E65B8">BTC</a>,<a href="https://testnet.bscscan.com/address/0xd66c6B4F0be8CE5b39D52E0Fd1344c389929B378">ETH</a>,<a href="https://testnet.bscscan.com/address/0xa83575490D7df4E2F47b7D38ef351a2722cA45b9">XRP</a>,<a href="https://testnet.bscscan.com/address/0xed24fc36d5ee211ea25a80239fb8c4cfd80f12ee">BUSD</a>,<a href="https://testnet.bscscan.com/address/0x337610d27c682E347C9cD60BD4b3b107C9d34dDd">USDT</a>,<a href="https://testnet.bscscan.com/address/0x64544969ed7EBf5f083679233325356EbE738930">USDC</a>,<a href="https://testnet.bscscan.com/address/0xEC5dCb5Dbf4B114C9d0F65BcCAb49EC54F6A0867">DAI</a> are issued as BEP20 token.</p>
+						<p> Click to get detail about <a href="https://github.com/bnb-chain/BEPs/blob/master/BEP20.md">BEP20</a>.</p>
+
+						<p> Support Discord: <a href="http://discord.gg/bnbchain"> discord.gg/bnbchain </a> </p>
+						{{if .Recaptcha}}<em>The faucet is running reCaptcha protection against bots.</em>{{end}}
 					</div>
 				</div>
 			</div>
 		</div>
-	</div>
-</div>
-
-<script>
-	// Global variables to hold the current status of the faucet
-	var attempt = 0;
-	var server;
-	var tier = 0;
-	var symbol="";
-	var requests = [];
-
-	// Define a function that creates closures to drop old requests
-	var dropper = function(hash) {
-		return function() {
-			for (var i=0; i<requests.length; i++) {
-				if (requests[i].tx.hash == hash) {
-					requests.splice(i, 1);
-					break;
-				}
-			}
-		}
-	};
-	// Define the function that submits a gist url to the server
-	var submit = function({{if .Recaptcha}}captcha{{end}}) {
-		server.send(JSON.stringify({url: $("#url")[0].value, symbol: symbol, tier: tier{{if .Recaptcha}}, captcha: captcha{{end}}}));{{if .Recaptcha}}
-		grecaptcha.reset();{{end}}
-	};
-	// Define a method to reconnect upon server loss
-	var reconnect = function() {
-		server = new WebSocket(((window.location.protocol === "https:") ? "wss://" : "ws://") + window.location.host + "/faucet-smart/api");
-
-		server.onmessage = function(event) {
-			var msg = JSON.parse(event.data);
-			if (msg === null) {
-				return;
-			}
 
-			if (msg.funds !== undefined) {
-				$("#funds").text(msg.funds);
-			}
-			if (msg.funded !== undefined) {
-				$("#funded").text(msg.funded);
-			}
-			if (msg.peers !== undefined) {
-				$("#peers").text(msg.peers);
-			}
-			if (msg.number !== undefined) {
-				$("#block").text(parseInt(msg.number, 16));
-			}
-			if (msg.error !== undefined) {
-				noty({layout: 'topCenter', text: msg.error, type: 'error', timeout: 5000, progressBar: true});
-			}
-			if (msg.success !== undefined) {
-				noty({layout: 'topCenter', text: msg.success, type: 'success', timeout: 5000, progressBar: true});
-			}
-			if (msg.requests !== undefined && msg.requests !== null) {
-				// Mark all previous requests missing as done
-				for (var i=0; i<requests.length; i++) {
-					if (msg.requests.length > 0 && msg.requests[0].tx.hash == requests[i].tx.hash) {
-						break;
-					}
-					if (requests[i].time != "") {
-						requests[i].time = "";
-						setTimeout(dropper(requests[i].tx.hash), 3000);
-					}
-				}
-				// Append any new requests into our local collection
-				var common = -1;
-				if (requests.length > 0) {
-					for (var i=0; i<msg.requests.length; i++) {
-						if (requests[requests.length-1].tx.hash == msg.requests[i].tx.hash) {
-							common = i;
+		<script>
+			// Global variables to hold the current status of the faucet
+			var attempt = 0;
+			var server;
+			var tier = 0;
+			var symbol="";
+			var requests = [];
+			var captcha;
+
+			// Define a function that creates closures to drop old requests
+			var dropper = function(hash) {
+				return function() {
+					for (var i=0; i<requests.length; i++) {
+						if (requests[i].tx.hash == hash) {
+							requests.splice(i, 1);
 							break;
 						}
 					}
 				}
-				for (var i=common+1; i<msg.requests.length; i++) {
-					requests.push(msg.requests[i]);
-				}
-				// Iterate over our entire local collection and re-render the funding table
-				var content = "";
-				for (var i=requests.length-1; i >= 0; i--) {
-					var done    = requests[i].time == "";
-					var elapsed = moment().unix()-moment(requests[i].time).unix();
-
-					content += "<tr id='" + requests[i].tx.hash + "'>";
-					content += "  <td><div style=\"background: url('" + requests[i].avatar + "'); background-size: cover; width:32px; height: 32px; border-radius: 4px;\"></div></td>";
-					content += "  <td><pre>" + requests[i].account + "</pre></td>";
-					content += "  <td style=\"width: 100%; text-align: center; vertical-align: middle;\">";
-					if (done) {
-						content += "    funded";
-					} else {
-						content += "    <span id='time-" + i + "' class='timer'>" + moment.duration(-elapsed, 'seconds').humanize(true) + "</span>";
+			};
+
+			document.getElementById("contendBody").style.display = "none";
+
+			var recaptchaCallback = function() {
+				hcaptcha.render('recaptcha_element', {
+					'sitekey' : '{{.Recaptcha}}',
+					'callback' : assignCallback,
+				});
+			};
+
+			var assignCallback = function(gcaptcha) {
+				document.getElementById("contendBody").style.display = "block";
+				document.getElementById("recaptcha_element").style.display = "none";
+				captcha = gcaptcha;
+			};
+			// Define the function that submits a gist url to the server
+			var submit = function() {
+				server.send(JSON.stringify({url: $("#url")[0].value, symbol: symbol, tier: tier{{if .Recaptcha}}, captcha: captcha{{end}}}));{{if .Recaptcha}}
+				hcaptcha.reset();{{end}}
+			};
+			// Define a method to reconnect upon server loss
+			var reconnect = function() {
+				server = new WebSocket(((window.location.protocol === "https:") ? "wss://" : "ws://") + window.location.host + "/faucet-smart/api");
+
+				server.onmessage = function(event) {
+					var msg = JSON.parse(event.data);
+					if (msg === null) {
+						return;
+					}
+
+					if (msg.funds !== undefined) {
+						$("#funds").text(msg.funds);
+					}
+					if (msg.funded !== undefined) {
+						$("#funded").text(msg.funded);
 					}
-					content += "    <div class='progress' style='height: 4px; margin: 0;'>";
-					if (done) {
-						content += "      <div class='progress-bar progress-bar-success' role='progressbar' aria-valuenow='30' style='width:100%;'></div>";
-					} else if (elapsed > 30) {
-						content += "      <div class='progress-bar progress-bar-danger progress-bar-striped active' role='progressbar' aria-valuenow='30' style='width:100%;'></div>";
-					} else {
-						content += "      <div class='progress-bar progress-bar-striped active' role='progressbar' aria-valuenow='" + elapsed + "' style='width:" + (elapsed * 100 / 30) + "%;'></div>";
+					if (msg.peers !== undefined) {
+						$("#peers").text(msg.peers);
+					}
+					if (msg.number !== undefined) {
+						$("#block").text(parseInt(msg.number, 16));
+					}
+					if (msg.error !== undefined) {
+						noty({layout: 'topCenter', text: msg.error, type: 'error', timeout: 5000, progressBar: true});
+					}
+					if (msg.success !== undefined) {
+						noty({layout: 'topCenter', text: msg.success, type: 'success', timeout: 5000, progressBar: true});
+					}
+					if (msg.requests !== undefined && msg.requests !== null) {
+						// Mark all previous requests missing as done
+						for (var i=0; i<requests.length; i++) {
+							if (msg.requests.length > 0 && msg.requests[0].tx.hash == requests[i].tx.hash) {
+								break;
+							}
+							if (requests[i].time != "") {
+								requests[i].time = "";
+								setTimeout(dropper(requests[i].tx.hash), 3000);
+							}
+						}
+						// Append any new requests into our local collection
+						var common = -1;
+						if (requests.length > 0) {
+							for (var i=0; i<msg.requests.length; i++) {
+								if (requests[requests.length-1].tx.hash == msg.requests[i].tx.hash) {
+									common = i;
+									break;
+								}
+							}
+						}
+						for (var i=common+1; i<msg.requests.length; i++) {
+							requests.push(msg.requests[i]);
+						}
+						// Iterate over our entire local collection and re-render the funding table
+						var content = "";
+						for (var i=0; i<requests.length; i++) {
+							var done    = requests[i].time == "";
+							var elapsed = moment().unix()-moment(requests[i].time).unix();
+
+							content += "<tr id='" + requests[i].tx.hash + "'>";
+							content += "  <td><div style=\"background: url('" + requests[i].avatar + "'); background-size: cover; width:32px; height: 32px; border-radius: 4px;\"></div></td>";
+							content += "  <td><pre>" + requests[i].account + "</pre></td>";
+							content += "  <td style=\"width: 100%; text-align: center; vertical-align: middle;\">";
+							if (done) {
+								content += "    funded";
+							} else {
+								content += "    <span id='time-" + i + "' class='timer'>" + moment.duration(-elapsed, 'seconds').humanize(true) + "</span>";
+							}
+							content += "    <div class='progress' style='height: 4px; margin: 0;'>";
+							if (done) {
+								content += "      <div class='progress-bar progress-bar-success' role='progressbar' aria-valuenow='30' style='width:100%;'></div>";
+							} else if (elapsed > 30) {
+								content += "      <div class='progress-bar progress-bar-danger progress-bar-striped active' role='progressbar' aria-valuenow='30' style='width:100%;'></div>";
+							} else {
+								content += "      <div class='progress-bar progress-bar-striped active' role='progressbar' aria-valuenow='" + elapsed + "' style='width:" + (elapsed * 100 / 30) + "%;'></div>";
+							}
+							content += "    </div>";
+							content += "  </td>";
+							content += "</tr>";
+						}
+						$("#requests").html("<tbody>" + content + "</tbody>");
 					}
-					content += "    </div>";
-					content += "  </td>";
-					content += "</tr>";
 				}
-				$("#requests").html("<tbody>" + content + "</tbody>");
+				server.onclose = function() { setTimeout(reconnect, 3000); };
 			}
-		}
-		server.onclose = function() { setTimeout(reconnect, 3000); };
-	}
-	// Start a UI updater to push the progress bars forward until they are done
-	setInterval(function() {
-		$('.progress-bar').each(function() {
-			var progress = Number($(this).attr('aria-valuenow')) + 1;
-			if (progress < 30) {
-				$(this).attr('aria-valuenow', progress);
-				$(this).css('width', (progress * 100 / 30) + '%');
-			} else if (progress == 30) {
-				$(this).css('width', '100%');
-				$(this).addClass("progress-bar-danger");
-			}
-		})
-		$('.timer').each(function() {
-			var index = Number($(this).attr('id').substring(5));
-			$(this).html(moment.duration(moment(requests[index].time).unix()-moment().unix(), 'seconds').humanize(true));
-		})
-	}, 1000);
-
-	// Establish a websocket connection to the API server
-	reconnect();
-</script>{{if .Recaptcha}}
-<script src="https://www.google.com/recaptcha/api.js" async defer></script>{{end}}
-</body>
+			// Start a UI updater to push the progress bars forward until they are done
+			setInterval(function() {
+				$('.progress-bar').each(function() {
+					var progress = Number($(this).attr('aria-valuenow')) + 1;
+					if (progress < 30) {
+						$(this).attr('aria-valuenow', progress);
+						$(this).css('width', (progress * 100 / 30) + '%');
+					} else if (progress == 30) {
+						$(this).css('width', '100%');
+						$(this).addClass("progress-bar-danger");
+					}
+				})
+				$('.timer').each(function() {
+					var index = Number($(this).attr('id').substring(5));
+					$(this).html(moment.duration(moment(requests[index].time).unix()-moment().unix(), 'seconds').humanize(true));
+				})
+			}, 1000);
+
+			// Establish a websocket connection to the API server
+			reconnect();
+		</script>{{if .Recaptcha}}
+		<script src="https://js.hcaptcha.com/1/api.js?onload=recaptchaCallback&render=explicit"
+				async defer></script>{{end}}
+	</body>
 </html>
diff --git a/cmd/faucet/website.go b/cmd/faucet/website.go
index 854f4404d9..dae64a7f23 100644
--- a/cmd/faucet/website.go
+++ b/cmd/faucet/website.go
@@ -1,6 +1,6 @@
 // Code generated by go-bindata. DO NOT EDIT.
 // sources:
-// faucet.html (8.959kB)
+// faucet.html (10.721kB)
 
 package main
 
@@ -10,7 +10,6 @@ import (
 	"crypto/sha256"
 	"fmt"
 	"io"
-	"io/ioutil"
 	"os"
 	"path/filepath"
 	"strings"
@@ -69,7 +68,7 @@ func (fi bindataFileInfo) Sys() interface{} {
 	return nil
 }
 
-var _faucetHtml = 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
 func faucetHtmlBytes() ([]byte, error) {
 	return bindataRead(
@@ -85,7 +84,7 @@ func faucetHtml() (*asset, error) {
 	}
 
 	info := bindataFileInfo{name: "faucet.html", size: 0, mode: os.FileMode(0), modTime: time.Unix(0, 0)}
-	a := &asset{bytes: bytes, info: info, digest: [32]uint8{0x39, 0x4d, 0x5d, 0x6d, 0x7f, 0xf1, 0x26, 0x19, 0x7, 0xee, 0xd2, 0xb3, 0x2, 0xdf, 0xd2, 0x8c, 0x36, 0x87, 0x8e, 0x17, 0x50, 0xb6, 0x8f, 0xb0, 0xb5, 0xce, 0x73, 0xcc, 0x24, 0xd3, 0xd6, 0x8e}}
+	a := &asset{bytes: bytes, info: info, digest: [32]uint8{0x52, 0x9f, 0x7a, 0x51, 0x16, 0x30, 0x5c, 0xd0, 0xef, 0xb1, 0xd6, 0xf2, 0xd6, 0xea, 0xe6, 0x6d, 0xd, 0xca, 0x7f, 0x57, 0x5b, 0xb7, 0x2c, 0xab, 0xe8, 0xca, 0x73, 0xa2, 0x0, 0xc9, 0xa9, 0x75}}
 	return a, nil
 }
 
@@ -190,11 +189,13 @@ const AssetDebug = false
 // directory embedded in the file by go-bindata.
 // For example if you run go-bindata on data/... and data contains the
 // following hierarchy:
-//     data/
-//       foo.txt
-//       img/
-//         a.png
-//         b.png
+//
+//	data/
+//	  foo.txt
+//	  img/
+//	    a.png
+//	    b.png
+//
 // then AssetDir("data") would return []string{"foo.txt", "img"},
 // AssetDir("data/img") would return []string{"a.png", "b.png"},
 // AssetDir("foo.txt") and AssetDir("notexist") would return an error, and
@@ -244,7 +245,7 @@ func RestoreAsset(dir, name string) error {
 	if err != nil {
 		return err
 	}
-	err = ioutil.WriteFile(_filePath(dir, name), data, info.Mode())
+	err = os.WriteFile(_filePath(dir, name), data, info.Mode())
 	if err != nil {
 		return err
 	}
diff --git a/cmd/geth/blsaccountcmd.go b/cmd/geth/blsaccountcmd.go
new file mode 100644
index 0000000000..45d11269e7
--- /dev/null
+++ b/cmd/geth/blsaccountcmd.go
@@ -0,0 +1,558 @@
+package main
+
+import (
+	"context"
+	"encoding/hex"
+	"encoding/json"
+	"fmt"
+	"io/ioutil"
+	"os"
+	"path/filepath"
+	"strings"
+
+	"github.com/google/uuid"
+	"github.com/logrusorgru/aurora"
+	"github.com/prysmaticlabs/prysm/v3/crypto/bls"
+	"github.com/prysmaticlabs/prysm/v3/encoding/bytesutil"
+	"github.com/prysmaticlabs/prysm/v3/io/prompt"
+	"github.com/prysmaticlabs/prysm/v3/proto/eth/service"
+	"github.com/prysmaticlabs/prysm/v3/validator/accounts"
+	"github.com/prysmaticlabs/prysm/v3/validator/accounts/iface"
+	"github.com/prysmaticlabs/prysm/v3/validator/accounts/petnames"
+	"github.com/prysmaticlabs/prysm/v3/validator/accounts/wallet"
+	"github.com/prysmaticlabs/prysm/v3/validator/keymanager"
+	"github.com/prysmaticlabs/prysm/v3/validator/keymanager/local"
+	keystorev4 "github.com/wealdtech/go-eth2-wallet-encryptor-keystorev4"
+	"gopkg.in/urfave/cli.v1"
+
+	"github.com/ethereum/go-ethereum/cmd/utils"
+	"github.com/ethereum/go-ethereum/signer/core"
+)
+
+const (
+	BLSWalletPath   = "bls/wallet"
+	BLSKeystorePath = "bls/keystore"
+)
+
+var (
+	au = aurora.NewAurora(true)
+)
+
+var (
+	blsCommand = cli.Command{
+		Name:      "bls",
+		Usage:     "Manage BLS wallet and accounts",
+		ArgsUsage: "",
+		Category:  "BLS ACCOUNT COMMANDS",
+		Description: `
+
+Manage BLS wallet and accounts, before creating or importing BLS accounts, create
+BLS wallet first. One BLS wallet is enough for all BLS accounts, the first BLS
+account in the wallet will be used to vote for fast finality now.
+
+It only supports interactive mode now, when you are prompted for password, please
+input your password, and take care the wallet password which is different from accounts'
+password.
+
+There are generally two steps to manage a BLS account:
+1.Create a BLS wallet: geth bls wallet create
+2.Create a BLS account: geth bls account new
+  or import a BLS account: geth bls account import <keystore file>`,
+		Subcommands: []cli.Command{
+			{
+				Name:      "wallet",
+				Usage:     "Manage BLS wallet",
+				ArgsUsage: "",
+				Category:  "BLS ACCOUNT COMMANDS",
+				Description: `
+
+Create a BLS wallet to manage BLS accounts, this should before creating
+or import a BLS account. The BLS wallet dir should be "<DATADIR>/bls/wallet".`,
+				Subcommands: []cli.Command{
+					{
+						Name:      "create",
+						Usage:     "Create BLS wallet",
+						Action:    utils.MigrateFlags(blsWalletCreate),
+						ArgsUsage: "",
+						Category:  "BLS ACCOUNT COMMANDS",
+						Flags: []cli.Flag{
+							utils.DataDirFlag,
+						},
+						Description: `
+	geth bls wallet create
+
+will prompt for your password then create a BLS wallet in "<DATADIR>/bls/wallet",
+don't create BLS wallet repeatedly'.`,
+					},
+				},
+			},
+			{
+				Name:      "account",
+				Usage:     "Manage BLS accounts",
+				ArgsUsage: "",
+				Category:  "BLS ACCOUNT COMMANDS",
+				Description: `
+
+Manage BLS accounts,list all existing accounts, import a BLS private key into
+a new account, create a new account or delete an existing account.
+
+Make sure you remember the password you gave when creating a new account.
+Without it you are not able to unlock your account. And this password is
+different from the wallet password, please take care.
+
+Note that exporting your key in unencrypted format is NOT supported.
+
+Keys are stored under <DATADIR>/bls/keystore.
+It is safe to transfer the entire directory or the individual keys therein
+between ethereum nodes by simply copying.
+
+Make sure you backup your BLS keys regularly.`,
+				Subcommands: []cli.Command{
+					{
+						Name:      "new",
+						Usage:     "Create a BLS account",
+						Action:    utils.MigrateFlags(blsAccountCreate),
+						ArgsUsage: "",
+						Category:  "BLS ACCOUNT COMMANDS",
+						Flags: []cli.Flag{
+							utils.DataDirFlag,
+						},
+						Description: `
+	geth bls account new
+
+Creates a new BLS account and imports the account into the BLS wallet.
+
+If the BLS wallet not created yet, it will try to create BLS wallet first.
+
+The account is saved in encrypted format, you are prompted for a password.
+You must remember this password to unlock your account in the future.`,
+					},
+					{
+						Name:      "import",
+						Usage:     "Import a BLS account",
+						Action:    utils.MigrateFlags(blsAccountImport),
+						ArgsUsage: "<keystore file>",
+						Category:  "BLS ACCOUNT COMMANDS",
+						Flags: []cli.Flag{
+							utils.DataDirFlag,
+						},
+						Description: `
+	geth bls account import <keyFile>
+
+Import a encrypted BLS account from keystore file <keyFile> into the BLS wallet.
+
+If the BLS wallet not created yet, it will try to create BLS wallet first.`,
+					},
+					{
+						Name:      "list",
+						Usage:     "Print summary of existing BLS accounts",
+						Action:    utils.MigrateFlags(blsAccountList),
+						ArgsUsage: "",
+						Category:  "BLS ACCOUNT COMMANDS",
+						Flags: []cli.Flag{
+							utils.DataDirFlag,
+						},
+						Description: `
+	geth bls account list
+
+Print summary of existing BLS accounts in the current BLS wallet.`,
+					},
+					{
+						Name:      "delete",
+						Usage:     "Delete the selected BLS account from the BLS wallet",
+						Action:    utils.MigrateFlags(blsAccountDelete),
+						ArgsUsage: "<BLS pubkey>",
+						Category:  "BLS ACCOUNT COMMANDS",
+						Flags: []cli.Flag{
+							utils.DataDirFlag,
+						},
+						Description: `
+	geth bls account delete
+
+Delete the selected BLS account from the BLS wallet.`,
+					},
+				},
+			},
+		},
+	}
+)
+
+// blsWalletCreate creates a BLS wallet in <DATADIR>/bls/wallet.
+func blsWalletCreate(ctx *cli.Context) error {
+	cfg := gethConfig{Node: defaultNodeConfig()}
+	// Load config file.
+	if file := ctx.GlobalString(configFileFlag.Name); file != "" {
+		if err := loadConfig(file, &cfg); err != nil {
+			utils.Fatalf("%v", err)
+		}
+	}
+	utils.SetNodeConfig(ctx, &cfg.Node)
+
+	dir := filepath.Join(cfg.Node.DataDir, BLSWalletPath)
+	dirExists, err := wallet.Exists(dir)
+	if err != nil {
+		utils.Fatalf("Check BLS wallet exists error: %v.", err)
+	}
+	if dirExists {
+		utils.Fatalf("BLS wallet already exists in <DATADIR>/bls/wallet.")
+	}
+
+	password := utils.GetPassPhrase("Your new BLS wallet will be locked with a password. Please give a password. Do not forget this password.", true)
+
+	opts := []accounts.Option{}
+	opts = append(opts, accounts.WithWalletDir(dir))
+	opts = append(opts, accounts.WithWalletPassword(password))
+	opts = append(opts, accounts.WithKeymanagerType(keymanager.Local))
+	opts = append(opts, accounts.WithSkipMnemonicConfirm(true))
+	acc, err := accounts.NewCLIManager(opts...)
+	if err != nil {
+		utils.Fatalf("New Accounts CLI Manager failed: %v.", err)
+	}
+	if _, err := acc.WalletCreate(context.Background()); err != nil {
+		utils.Fatalf("Create BLS wallet failed: %v.", err)
+	}
+
+	fmt.Println("Create BLS wallet successfully!")
+	return nil
+}
+
+// openOrCreateBLSWallet opens BLS wallet in <DATADIR>/bls/wallet, if wallet
+// not exists, then creates BLS wallet in <DATADIR>/bls/wallet.
+func openOrCreateBLSWallet(ctx *cli.Context, cfg *gethConfig) (*wallet.Wallet, error) {
+	var w *wallet.Wallet
+	walletDir := filepath.Join(cfg.Node.DataDir, BLSWalletPath)
+	dirExists, err := wallet.Exists(walletDir)
+	if err != nil {
+		utils.Fatalf("Check dir %s failed: %v.", walletDir, err)
+	}
+	if !dirExists {
+		fmt.Println("BLS wallet not exists, creating BLS wallet...")
+		password := utils.GetPassPhrase("Your new BLS wallet will be locked with a password. Please give a password. Do not forget this password.", true)
+
+		opts := []accounts.Option{}
+		opts = append(opts, accounts.WithWalletDir(walletDir))
+		opts = append(opts, accounts.WithWalletPassword(password))
+		opts = append(opts, accounts.WithKeymanagerType(keymanager.Local))
+		opts = append(opts, accounts.WithSkipMnemonicConfirm(true))
+		acc, err := accounts.NewCLIManager(opts...)
+		if err != nil {
+			utils.Fatalf("New Accounts CLI Manager failed: %v.", err)
+		}
+		w, err := acc.WalletCreate(context.Background())
+		if err != nil {
+			utils.Fatalf("Create BLS wallet failed: %v.", err)
+		}
+
+		fmt.Println("Create BLS wallet successfully!")
+		return w, nil
+	}
+
+	walletPassword := utils.GetPassPhrase("Enter the password for your BLS wallet.", false)
+	w, err = wallet.OpenWallet(context.Background(), &wallet.Config{
+		WalletDir:      walletDir,
+		WalletPassword: walletPassword,
+	})
+	if err != nil {
+		utils.Fatalf("Open BLS wallet failed: %v.", err)
+	}
+	return w, nil
+}
+
+// blsAccountCreate creates a BLS account in <DATADIR>/bls/keystore,
+// and import the created account into the BLS wallet.
+func blsAccountCreate(ctx *cli.Context) error {
+	cfg := gethConfig{Node: defaultNodeConfig()}
+	// Load config file.
+	if file := ctx.GlobalString(configFileFlag.Name); file != "" {
+		if err := loadConfig(file, &cfg); err != nil {
+			utils.Fatalf("%v", err)
+		}
+	}
+	utils.SetNodeConfig(ctx, &cfg.Node)
+
+	w, _ := openOrCreateBLSWallet(ctx, &cfg)
+	if w.KeymanagerKind() != keymanager.Local {
+		utils.Fatalf("BLS wallet has wrong key manager kind.")
+	}
+	km, err := w.InitializeKeymanager(context.Background(), iface.InitKeymanagerConfig{ListenForChanges: false})
+	if err != nil {
+		utils.Fatalf("Initialize key manager failed: %v.", err)
+	}
+	k, ok := km.(keymanager.Importer)
+	if !ok {
+		utils.Fatalf("The BLS keymanager cannot import keystores")
+	}
+
+	keystoreDir := filepath.Join(cfg.Node.DataDir, BLSKeystorePath)
+	if err := os.MkdirAll(keystoreDir, 0755); err != nil {
+		utils.Fatalf("Could not access keystore dir: %v.", err)
+	}
+	accountPassword := utils.GetPassPhrase("Your new BLS account will be encrypted with a password. Please give a password. Do not forget this password.", true)
+	if err := core.ValidatePasswordFormat(accountPassword); err != nil {
+		utils.Fatalf("Password invalid: %v.", err)
+	}
+
+	encryptor := keystorev4.New()
+	secretKey, err := bls.RandKey()
+	if err != nil {
+		utils.Fatalf("Could not generate BLS secret key: %v.", err)
+	}
+	pubKeyBytes := secretKey.PublicKey().Marshal()
+	cryptoFields, err := encryptor.Encrypt(secretKey.Marshal(), accountPassword)
+	if err != nil {
+		utils.Fatalf("Could not encrypt secret key: %v.", err)
+	}
+	id, err := uuid.NewRandom()
+	if err != nil {
+		utils.Fatalf("Could not generate uuid: %v.", err)
+	}
+	keystore := &keymanager.Keystore{
+		Crypto:  cryptoFields,
+		ID:      id.String(),
+		Pubkey:  fmt.Sprintf("%x", pubKeyBytes),
+		Version: encryptor.Version(),
+		Name:    encryptor.Name(),
+	}
+
+	encodedFile, err := json.MarshalIndent(keystore, "", "\t")
+	if err != nil {
+		utils.Fatalf("Could not marshal keystore to JSON file: %v.", err)
+	}
+	keystoreFile, err := os.Create(fmt.Sprintf("%s/keystore-%s.json", keystoreDir, petnames.DeterministicName(pubKeyBytes, "-")))
+	if err != nil {
+		utils.Fatalf("Could not create keystore file: %v.", err)
+	}
+	if _, err := keystoreFile.Write(encodedFile); err != nil {
+		utils.Fatalf("Could not write keystore file contents: %v.", err)
+	}
+	fmt.Println("Successfully create a BLS account.")
+
+	fmt.Println("Importing BLS account, this may take a while...")
+	_, err = accounts.ImportAccounts(context.Background(), &accounts.ImportAccountsConfig{
+		Importer:        k,
+		Keystores:       []*keymanager.Keystore{keystore},
+		AccountPassword: accountPassword,
+	})
+	if err != nil {
+		utils.Fatalf("Import BLS account failed: %v.", err)
+	}
+	fmt.Printf("Successfully import created BLS account.\n")
+	return nil
+}
+
+// blsAccountImport imports a BLS account into the BLS wallet.
+func blsAccountImport(ctx *cli.Context) error {
+	keyfile := ctx.Args().First()
+	if len(keyfile) == 0 {
+		utils.Fatalf("The keystore file must be given as argument.")
+	}
+	keyJSON, err := ioutil.ReadFile(keyfile)
+	if err != nil {
+		utils.Fatalf("Could not read keystore file: %v", err)
+	}
+	keystore := &keymanager.Keystore{}
+	if err := json.Unmarshal(keyJSON, keystore); err != nil {
+		utils.Fatalf("Could not decode keystore file: %v.", err)
+	}
+	if keystore.Pubkey == "" {
+		utils.Fatalf(" Missing public key, wrong keystore file.")
+	}
+
+	cfg := gethConfig{Node: defaultNodeConfig()}
+	// Load config file.
+	if file := ctx.GlobalString(configFileFlag.Name); file != "" {
+		if err := loadConfig(file, &cfg); err != nil {
+			utils.Fatalf("%v", err)
+		}
+	}
+	utils.SetNodeConfig(ctx, &cfg.Node)
+
+	w, _ := openOrCreateBLSWallet(ctx, &cfg)
+	if w.KeymanagerKind() != keymanager.Local {
+		utils.Fatalf("BLS wallet has wrong key manager kind.")
+	}
+	km, err := w.InitializeKeymanager(context.Background(), iface.InitKeymanagerConfig{ListenForChanges: false})
+	if err != nil {
+		utils.Fatalf("Initialize key manager failed: %v.", err)
+	}
+	k, ok := km.(keymanager.Importer)
+	if !ok {
+		utils.Fatalf("The BLS keymanager cannot import keystores")
+	}
+
+	password := utils.GetPassPhrase("Enter the password for your imported account.", false)
+	fmt.Println("Importing BLS account, this may take a while...")
+	statuses, err := accounts.ImportAccounts(context.Background(), &accounts.ImportAccountsConfig{
+		Importer:        k,
+		Keystores:       []*keymanager.Keystore{keystore},
+		AccountPassword: password,
+	})
+	if err != nil {
+		utils.Fatalf("Import BLS account failed: %v.", err)
+	}
+	// len(statuses)==len(Keystores) when err==nil
+	if statuses[0].Status == service.ImportedKeystoreStatus_ERROR {
+		fmt.Printf("Could not import keystore: %v.", statuses[0].Message)
+	} else {
+		fmt.Println("Successfully import BLS account.")
+	}
+	return nil
+}
+
+// blsAccountList prints existing BLS accounts in the BLS wallet.
+func blsAccountList(ctx *cli.Context) error {
+	cfg := gethConfig{Node: defaultNodeConfig()}
+	// Load config file.
+	if file := ctx.GlobalString(configFileFlag.Name); file != "" {
+		if err := loadConfig(file, &cfg); err != nil {
+			utils.Fatalf("%v", err)
+		}
+	}
+	utils.SetNodeConfig(ctx, &cfg.Node)
+
+	walletDir := filepath.Join(cfg.Node.DataDir, BLSWalletPath)
+	dirExists, err := wallet.Exists(walletDir)
+	if err != nil || !dirExists {
+		utils.Fatalf("BLS wallet not exists.")
+	}
+
+	walletPassword := utils.GetPassPhrase("Enter the password for your BLS wallet.", false)
+	w, err := wallet.OpenWallet(context.Background(), &wallet.Config{
+		WalletDir:      walletDir,
+		WalletPassword: walletPassword,
+	})
+	if err != nil {
+		utils.Fatalf("Open BLS wallet failed: %v.", err)
+	}
+	km, err := w.InitializeKeymanager(context.Background(), iface.InitKeymanagerConfig{ListenForChanges: false})
+	if err != nil {
+		utils.Fatalf("Initialize key manager failed: %v.", err)
+	}
+
+	ikm, ok := km.(*local.Keymanager)
+	if !ok {
+		utils.Fatalf("Could not assert keymanager interface to concrete type.")
+	}
+	accountNames, err := ikm.ValidatingAccountNames()
+	if err != nil {
+		utils.Fatalf("Could not fetch account names: %v.", err)
+	}
+	numAccounts := au.BrightYellow(len(accountNames))
+	fmt.Printf("(keymanager kind) %s\n", au.BrightGreen("imported wallet").Bold())
+	fmt.Println("")
+	if len(accountNames) == 1 {
+		fmt.Printf("Showing %d BLS account\n", numAccounts)
+	} else {
+		fmt.Printf("Showing %d BLS accounts\n", numAccounts)
+	}
+	pubKeys, err := km.FetchValidatingPublicKeys(context.Background())
+	if err != nil {
+		utils.Fatalf("Could not fetch BLS public keys: %v.", err)
+	}
+	for i := 0; i < len(accountNames); i++ {
+		fmt.Println("")
+		fmt.Printf("%s | %s\n", au.BrightBlue(fmt.Sprintf("Account %d", i)).Bold(), au.BrightGreen(accountNames[i]).Bold())
+		fmt.Printf("%s %#x\n", au.BrightMagenta("[BLS public key]").Bold(), pubKeys[i])
+	}
+	fmt.Println("")
+	return nil
+}
+
+// blsAccountDelete deletes a selected BLS account from the BLS wallet.
+func blsAccountDelete(ctx *cli.Context) error {
+	if len(ctx.Args()) == 0 {
+		utils.Fatalf("No BLS account specified to delete.")
+	}
+	var filteredPubKeys []bls.PublicKey
+	for _, str := range ctx.Args() {
+		pkString := str
+		if strings.Contains(pkString, "0x") {
+			pkString = pkString[2:]
+		}
+		pubKeyBytes, err := hex.DecodeString(pkString)
+		if err != nil {
+			utils.Fatalf("Could not decode string %s as hex.", pkString)
+		}
+		blsPublicKey, err := bls.PublicKeyFromBytes(pubKeyBytes)
+		if err != nil {
+			utils.Fatalf("%#x is not a valid BLS public key.", pubKeyBytes)
+		}
+		filteredPubKeys = append(filteredPubKeys, blsPublicKey)
+	}
+
+	cfg := gethConfig{Node: defaultNodeConfig()}
+	// Load config file.
+	if file := ctx.GlobalString(configFileFlag.Name); file != "" {
+		if err := loadConfig(file, &cfg); err != nil {
+			utils.Fatalf("%v", err)
+		}
+	}
+	utils.SetNodeConfig(ctx, &cfg.Node)
+
+	walletDir := filepath.Join(cfg.Node.DataDir, BLSWalletPath)
+	dirExists, err := wallet.Exists(walletDir)
+	if err != nil || !dirExists {
+		utils.Fatalf("BLS wallet not exists.")
+	}
+
+	walletPassword := utils.GetPassPhrase("Enter the password for your BLS wallet.", false)
+	w, err := wallet.OpenWallet(context.Background(), &wallet.Config{
+		WalletDir:      walletDir,
+		WalletPassword: walletPassword,
+	})
+	if err != nil {
+		utils.Fatalf("Open BLS wallet failed: %v.", err)
+	}
+	km, err := w.InitializeKeymanager(context.Background(), iface.InitKeymanagerConfig{ListenForChanges: false})
+	if err != nil {
+		utils.Fatalf("Initialize key manager failed: %v.", err)
+	}
+	pubkeys, err := km.FetchValidatingPublicKeys(context.Background())
+	if err != nil {
+		utils.Fatalf("Could not fetch BLS public keys: %v.", err)
+	}
+
+	rawPublicKeys := make([][]byte, len(filteredPubKeys))
+	formattedPubKeys := make([]string, len(filteredPubKeys))
+	for i, pk := range filteredPubKeys {
+		pubKeyBytes := pk.Marshal()
+		rawPublicKeys[i] = pubKeyBytes
+		formattedPubKeys[i] = fmt.Sprintf("%#x", bytesutil.Trunc(pubKeyBytes))
+	}
+	allAccountStr := strings.Join(formattedPubKeys, ", ")
+	if len(filteredPubKeys) == 1 {
+		promptText := "Are you sure you want to delete 1 account? (%s) Y/N"
+		resp, err := prompt.ValidatePrompt(
+			os.Stdin, fmt.Sprintf(promptText, au.BrightGreen(formattedPubKeys[0])), prompt.ValidateYesOrNo,
+		)
+		if err != nil {
+			return err
+		}
+		if strings.EqualFold(resp, "n") {
+			return nil
+		}
+	} else {
+		promptText := "Are you sure you want to delete %d accounts? (%s) Y/N"
+		if len(filteredPubKeys) == len(pubkeys) {
+			promptText = fmt.Sprintf("Are you sure you want to delete all accounts? Y/N (%s)", au.BrightGreen(allAccountStr))
+		} else {
+			promptText = fmt.Sprintf(promptText, len(filteredPubKeys), au.BrightGreen(allAccountStr))
+		}
+		resp, err := prompt.ValidatePrompt(os.Stdin, promptText, prompt.ValidateYesOrNo)
+		if err != nil {
+			return err
+		}
+		if strings.EqualFold(resp, "n") {
+			return nil
+		}
+	}
+
+	if err := accounts.DeleteAccount(context.Background(), &accounts.DeleteConfig{
+		Keymanager:       km,
+		DeletePublicKeys: rawPublicKeys,
+	}); err != nil {
+		utils.Fatalf("Delete account failed: %v.", err)
+	}
+
+	return nil
+}
diff --git a/cmd/geth/main.go b/cmd/geth/main.go
index 6ea505b503..6c08754809 100644
--- a/cmd/geth/main.go
+++ b/cmd/geth/main.go
@@ -72,6 +72,7 @@ var (
 		utils.DisableSnapProtocolFlag,
 		utils.DisableDiffProtocolFlag,
 		utils.EnableTrustProtocolFlag,
+		utils.DisableBscProtocolFlag,
 		utils.DiffSyncFlag,
 		utils.PipeCommitFlag,
 		utils.RangeLimitFlag,
@@ -168,6 +169,10 @@ var (
 		utils.BlockAmountReserved,
 		utils.CheckSnapshotWithMPT,
 		utils.EnableDoubleSignMonitorFlag,
+		utils.VotingEnabledFlag,
+		utils.BLSPasswordFileFlag,
+		utils.BLSWalletDirFlag,
+		utils.VoteJournalDirFlag,
 	}
 
 	rpcFlags = []cli.Flag{
@@ -251,6 +256,7 @@ func init() {
 		utils.ShowDeprecated,
 		// See snapshot.go
 		snapshotCommand,
+		blsCommand,
 	}
 	sort.Sort(cli.CommandsByName(app.Commands))
 
diff --git a/cmd/geth/usage.go b/cmd/geth/usage.go
index 5054067909..ab813a92f9 100644
--- a/cmd/geth/usage.go
+++ b/cmd/geth/usage.go
@@ -43,6 +43,7 @@ var AppHelpFlagGroups = []flags.FlagGroup{
 			utils.DisableSnapProtocolFlag,
 			utils.DisableDiffProtocolFlag,
 			utils.EnableTrustProtocolFlag,
+			utils.DisableBscProtocolFlag,
 			utils.RangeLimitFlag,
 			utils.SmartCardDaemonPathFlag,
 			utils.NetworkIdFlag,
@@ -59,6 +60,9 @@ var AppHelpFlagGroups = []flags.FlagGroup{
 			utils.TriesInMemoryFlag,
 			utils.BlockAmountReserved,
 			utils.CheckSnapshotWithMPT,
+			utils.BLSPasswordFileFlag,
+			utils.BLSWalletDirFlag,
+			utils.VoteJournalDirFlag,
 		},
 	},
 	{
@@ -195,6 +199,7 @@ var AppHelpFlagGroups = []flags.FlagGroup{
 			utils.MinerRecommitIntervalFlag,
 			utils.MinerDelayLeftoverFlag,
 			utils.MinerNoVerfiyFlag,
+			utils.VotingEnabledFlag,
 		},
 	},
 	{
@@ -237,6 +242,12 @@ var AppHelpFlagGroups = []flags.FlagGroup{
 			cli.HelpFlag,
 		},
 	},
+	{
+		Name: "BLS ACCOUNT",
+		Flags: []cli.Flag{
+			utils.DataDirFlag,
+		},
+	},
 }
 
 func init() {
diff --git a/cmd/utils/flags.go b/cmd/utils/flags.go
index 9f4e4b6d10..7a73a0a988 100644
--- a/cmd/utils/flags.go
+++ b/cmd/utils/flags.go
@@ -25,6 +25,7 @@ import (
 	"math"
 	"math/big"
 	"os"
+	"path/filepath"
 	"runtime"
 	godebug "runtime/debug"
 	"strconv"
@@ -133,10 +134,14 @@ var (
 		Name:  "enabletrustprotocol",
 		Usage: "Enable trust protocol",
 	}
+	DisableBscProtocolFlag = cli.BoolFlag{
+		Name:  "disablebscprotocol",
+		Usage: "Disable bsc protocol",
+	}
+
 	DiffSyncFlag = cli.BoolFlag{
-		Name: "diffsync",
-		Usage: "Enable diffy sync, Please note that enable diffsync will improve the syncing speed, " +
-			"but will degrade the security to light client level",
+		Name:  "diffsync",
+		Usage: "warn: diff sync has been deprecated, the flag will be removed in the future",
 	}
 	PipeCommitFlag = cli.BoolFlag{
 		Name:  "pipecommit",
@@ -890,6 +895,26 @@ var (
 		Name:  "monitor.doublesign",
 		Usage: "Enable double sign monitor to check whether any validator signs multiple blocks",
 	}
+
+	VotingEnabledFlag = cli.BoolFlag{
+		Name:  "vote",
+		Usage: "Enable voting",
+	}
+
+	BLSPasswordFileFlag = cli.StringFlag{
+		Name:  "blspassword",
+		Usage: "File path for the BLS password, which contains the password to unlock BLS wallet for managing votes in fast_finality feature",
+	}
+
+	BLSWalletDirFlag = DirectoryFlag{
+		Name:  "blswallet",
+		Usage: "Path for the blsWallet dir in fast finality feature (default = inside the datadir)",
+	}
+
+	VoteJournalDirFlag = DirectoryFlag{
+		Name:  "vote-journal-path",
+		Usage: "Path for the voteJournal dir in fast finality feature (default = inside the datadir)",
+	}
 )
 
 // MakeDataDir retrieves the currently requested data directory, terminating
@@ -1305,6 +1330,8 @@ func SetNodeConfig(ctx *cli.Context, cfg *node.Config) {
 	setDataDir(ctx, cfg)
 	setSmartCard(ctx, cfg)
 	setMonitor(ctx, cfg)
+	setBLSWalletDir(ctx, cfg)
+	setVoteJournalDir(ctx, cfg)
 
 	if ctx.GlobalIsSet(ExternalSignerFlag.Name) {
 		cfg.ExternalSigner = ctx.GlobalString(ExternalSignerFlag.Name)
@@ -1337,6 +1364,10 @@ func SetNodeConfig(ctx *cli.Context, cfg *node.Config) {
 	if ctx.GlobalIsSet(InsecureUnlockAllowedFlag.Name) {
 		cfg.InsecureUnlockAllowed = ctx.GlobalBool(InsecureUnlockAllowedFlag.Name)
 	}
+
+	if ctx.GlobalIsSet(BLSPasswordFileFlag.Name) {
+		cfg.BLSPasswordFile = ctx.GlobalString(BLSPasswordFileFlag.Name)
+	}
 }
 
 func setSmartCard(ctx *cli.Context, cfg *node.Config) {
@@ -1368,6 +1399,24 @@ func setDataDir(ctx *cli.Context, cfg *node.Config) {
 	}
 }
 
+func setVoteJournalDir(ctx *cli.Context, cfg *node.Config) {
+	dataDir := cfg.DataDir
+	if ctx.GlobalIsSet(VoteJournalDirFlag.Name) {
+		cfg.VoteJournalDir = ctx.GlobalString(VoteJournalDirFlag.Name)
+	} else {
+		cfg.VoteJournalDir = filepath.Join(dataDir, "voteJournal")
+	}
+}
+
+func setBLSWalletDir(ctx *cli.Context, cfg *node.Config) {
+	dataDir := cfg.DataDir
+	if ctx.GlobalIsSet(BLSWalletDirFlag.Name) {
+		cfg.BLSWalletDir = ctx.GlobalString(BLSWalletDirFlag.Name)
+	} else {
+		cfg.BLSWalletDir = filepath.Join(dataDir, "bls/wallet")
+	}
+}
+
 func setGPO(ctx *cli.Context, cfg *gasprice.Config, light bool) {
 	// If we are running the light client, apply another group
 	// settings for gas oracle.
@@ -1487,6 +1536,9 @@ func setMiner(ctx *cli.Context, cfg *miner.Config) {
 	if ctx.GlobalIsSet(LegacyMinerGasTargetFlag.Name) {
 		log.Warn("The generic --miner.gastarget flag is deprecated and will be removed in the future!")
 	}
+	if ctx.GlobalBool(VotingEnabledFlag.Name) {
+		cfg.VoteEnable = true
+	}
 }
 
 func setWhitelist(ctx *cli.Context, cfg *ethconfig.Config) {
@@ -1645,6 +1697,9 @@ func SetEthConfig(ctx *cli.Context, stack *node.Node, cfg *ethconfig.Config) {
 	if ctx.GlobalIsSet(EnableTrustProtocolFlag.Name) {
 		cfg.EnableTrustProtocol = ctx.GlobalIsSet(EnableTrustProtocolFlag.Name)
 	}
+	if ctx.GlobalIsSet(DisableBscProtocolFlag.Name) {
+		cfg.DisableBscProtocol = ctx.GlobalIsSet(DisableBscProtocolFlag.Name)
+	}
 	if ctx.GlobalIsSet(DiffSyncFlag.Name) {
 		log.Warn("The --diffsync flag is deprecated and will be removed in the future!")
 	}
@@ -1721,7 +1776,7 @@ func SetEthConfig(ctx *cli.Context, stack *node.Node, cfg *ethconfig.Config) {
 		cfg.RPCTxFeeCap = ctx.GlobalFloat64(RPCGlobalTxFeeCapFlag.Name)
 	}
 	if ctx.GlobalIsSet(NoDiscoverFlag.Name) {
-		cfg.EthDiscoveryURLs, cfg.SnapDiscoveryURLs, cfg.TrustDiscoveryURLs = []string{}, []string{}, []string{}
+		cfg.EthDiscoveryURLs, cfg.SnapDiscoveryURLs, cfg.TrustDiscoveryURLs, cfg.BscDiscoveryURLs = []string{}, []string{}, []string{}, []string{}
 	} else if ctx.GlobalIsSet(DNSDiscoveryFlag.Name) {
 		urls := ctx.GlobalString(DNSDiscoveryFlag.Name)
 		if urls == "" {
@@ -1812,6 +1867,7 @@ func SetDNSDiscoveryDefaults(cfg *ethconfig.Config, genesis common.Hash) {
 		cfg.EthDiscoveryURLs = []string{url}
 		cfg.SnapDiscoveryURLs = cfg.EthDiscoveryURLs
 		cfg.TrustDiscoveryURLs = cfg.EthDiscoveryURLs
+		cfg.BscDiscoveryURLs = cfg.EthDiscoveryURLs
 	}
 }
 
diff --git a/common/math/integer.go b/common/math/integer.go
index 50d3eba1f5..36643b5bca 100644
--- a/common/math/integer.go
+++ b/common/math/integer.go
@@ -96,3 +96,10 @@ func SafeMul(x, y uint64) (uint64, bool) {
 	hi, lo := bits.Mul64(x, y)
 	return lo, hi != 0
 }
+
+func CeilDiv(x, y int) int {
+	if y == 0 {
+		return 0
+	}
+	return (x + y - 1) / y
+}
diff --git a/consensus/consensus.go b/consensus/consensus.go
index 87632a9d0d..30c4559043 100644
--- a/consensus/consensus.go
+++ b/consensus/consensus.go
@@ -57,6 +57,10 @@ type ChainHeaderReader interface {
 	GetHighestVerifiedHeader() *types.Header
 }
 
+type VotePool interface {
+	FetchVoteByBlockHash(blockHash common.Hash) []*types.VoteEnvelope
+}
+
 // ChainReader defines a small collection of methods needed to access the local
 // blockchain during header and/or uncle verification.
 type ChainReader interface {
@@ -148,4 +152,8 @@ type PoSA interface {
 	EnoughDistance(chain ChainReader, header *types.Header) bool
 	IsLocalBlock(header *types.Header) bool
 	AllowLightProcess(chain ChainReader, currentHeader *types.Header) bool
+	GetJustifiedNumberAndHash(chain ChainHeaderReader, header *types.Header) (uint64, common.Hash, error)
+	GetFinalizedHeader(chain ChainHeaderReader, header *types.Header) *types.Header
+	VerifyVote(chain ChainHeaderReader, vote *types.VoteEnvelope) error
+	IsActiveValidatorAt(chain ChainHeaderReader, header *types.Header) bool
 }
diff --git a/consensus/parlia/abi.go b/consensus/parlia/abi.go
index e841eb5cd5..ffe97a45ce 100644
--- a/consensus/parlia/abi.go
+++ b/consensus/parlia/abi.go
@@ -1,6 +1,6 @@
 package parlia
 
-const validatorSetABI = `
+const validatorSetABIBeforeLuban = `
 [
     {
       "anonymous": false,
@@ -1388,7 +1388,1605 @@ const validatorSetABI = `
       "stateMutability": "view",
       "type": "function"
     }
-  ]
+]
+`
+
+const validatorSetABI = `
+[
+    {
+        "anonymous":false,
+        "inputs":[
+            {
+                "indexed":false,
+                "internalType":"uint256",
+                "name":"amount",
+                "type":"uint256"
+            }
+        ],
+        "name":"batchTransfer",
+        "type":"event"
+    },
+    {
+        "anonymous":false,
+        "inputs":[
+            {
+                "indexed":true,
+                "internalType":"uint256",
+                "name":"amount",
+                "type":"uint256"
+            },
+            {
+                "indexed":false,
+                "internalType":"string",
+                "name":"reason",
+                "type":"string"
+            }
+        ],
+        "name":"batchTransferFailed",
+        "type":"event"
+    },
+    {
+        "anonymous":false,
+        "inputs":[
+            {
+                "indexed":true,
+                "internalType":"uint256",
+                "name":"amount",
+                "type":"uint256"
+            },
+            {
+                "indexed":false,
+                "internalType":"bytes",
+                "name":"reason",
+                "type":"bytes"
+            }
+        ],
+        "name":"batchTransferLowerFailed",
+        "type":"event"
+    },
+    {
+        "anonymous":false,
+        "inputs":[
+            {
+                "indexed":true,
+                "internalType":"address",
+                "name":"validator",
+                "type":"address"
+            },
+            {
+                "indexed":false,
+                "internalType":"uint256",
+                "name":"amount",
+                "type":"uint256"
+            }
+        ],
+        "name":"deprecatedDeposit",
+        "type":"event"
+    },
+    {
+        "anonymous":false,
+        "inputs":[
+            {
+                "indexed":true,
+                "internalType":"address",
+                "name":"validator",
+                "type":"address"
+            },
+            {
+                "indexed":false,
+                "internalType":"uint256",
+                "name":"amount",
+                "type":"uint256"
+            }
+        ],
+        "name":"deprecatedFinalityRewardDeposit",
+        "type":"event"
+    },
+    {
+        "anonymous":false,
+        "inputs":[
+            {
+                "indexed":true,
+                "internalType":"address payable",
+                "name":"validator",
+                "type":"address"
+            },
+            {
+                "indexed":false,
+                "internalType":"uint256",
+                "name":"amount",
+                "type":"uint256"
+            }
+        ],
+        "name":"directTransfer",
+        "type":"event"
+    },
+    {
+        "anonymous":false,
+        "inputs":[
+            {
+                "indexed":true,
+                "internalType":"address payable",
+                "name":"validator",
+                "type":"address"
+            },
+            {
+                "indexed":false,
+                "internalType":"uint256",
+                "name":"amount",
+                "type":"uint256"
+            }
+        ],
+        "name":"directTransferFail",
+        "type":"event"
+    },
+    {
+        "anonymous":false,
+        "inputs":[
+            {
+                "indexed":false,
+                "internalType":"string",
+                "name":"message",
+                "type":"string"
+            }
+        ],
+        "name":"failReasonWithStr",
+        "type":"event"
+    },
+    {
+        "anonymous":false,
+        "inputs":[
+            {
+                "indexed":false,
+                "internalType":"uint256",
+                "name":"amount",
+                "type":"uint256"
+            }
+        ],
+        "name":"feeBurned",
+        "type":"event"
+    },
+    {
+        "anonymous":false,
+        "inputs":[
+            {
+                "indexed":true,
+                "internalType":"address",
+                "name":"validator",
+                "type":"address"
+            },
+            {
+                "indexed":false,
+                "internalType":"uint256",
+                "name":"amount",
+                "type":"uint256"
+            }
+        ],
+        "name":"finalityRewardDeposit",
+        "type":"event"
+    },
+    {
+        "anonymous":false,
+        "inputs":[
+            {
+                "indexed":false,
+                "internalType":"string",
+                "name":"key",
+                "type":"string"
+            },
+            {
+                "indexed":false,
+                "internalType":"bytes",
+                "name":"value",
+                "type":"bytes"
+            }
+        ],
+        "name":"paramChange",
+        "type":"event"
+    },
+    {
+        "anonymous":false,
+        "inputs":[
+            {
+                "indexed":false,
+                "internalType":"uint256",
+                "name":"amount",
+                "type":"uint256"
+            }
+        ],
+        "name":"systemTransfer",
+        "type":"event"
+    },
+    {
+        "anonymous":false,
+        "inputs":[
+            {
+                "indexed":false,
+                "internalType":"uint8",
+                "name":"channelId",
+                "type":"uint8"
+            },
+            {
+                "indexed":false,
+                "internalType":"bytes",
+                "name":"msgBytes",
+                "type":"bytes"
+            }
+        ],
+        "name":"unexpectedPackage",
+        "type":"event"
+    },
+    {
+        "anonymous":false,
+        "inputs":[
+            {
+                "indexed":true,
+                "internalType":"address",
+                "name":"validator",
+                "type":"address"
+            },
+            {
+                "indexed":false,
+                "internalType":"uint256",
+                "name":"amount",
+                "type":"uint256"
+            }
+        ],
+        "name":"validatorDeposit",
+        "type":"event"
+    },
+    {
+        "anonymous":false,
+        "inputs":[
+            {
+                "indexed":true,
+                "internalType":"address",
+                "name":"validator",
+                "type":"address"
+            }
+        ],
+        "name":"validatorEmptyJailed",
+        "type":"event"
+    },
+    {
+        "anonymous":false,
+        "inputs":[
+            {
+                "indexed":true,
+                "internalType":"address",
+                "name":"validator",
+                "type":"address"
+            }
+        ],
+        "name":"validatorEnterMaintenance",
+        "type":"event"
+    },
+    {
+        "anonymous":false,
+        "inputs":[
+            {
+                "indexed":true,
+                "internalType":"address",
+                "name":"validator",
+                "type":"address"
+            }
+        ],
+        "name":"validatorExitMaintenance",
+        "type":"event"
+    },
+    {
+        "anonymous":false,
+        "inputs":[
+            {
+                "indexed":true,
+                "internalType":"address",
+                "name":"validator",
+                "type":"address"
+            },
+            {
+                "indexed":false,
+                "internalType":"uint256",
+                "name":"amount",
+                "type":"uint256"
+            }
+        ],
+        "name":"validatorFelony",
+        "type":"event"
+    },
+    {
+        "anonymous":false,
+        "inputs":[
+            {
+                "indexed":true,
+                "internalType":"address",
+                "name":"validator",
+                "type":"address"
+            }
+        ],
+        "name":"validatorJailed",
+        "type":"event"
+    },
+    {
+        "anonymous":false,
+        "inputs":[
+            {
+                "indexed":true,
+                "internalType":"address",
+                "name":"validator",
+                "type":"address"
+            },
+            {
+                "indexed":false,
+                "internalType":"uint256",
+                "name":"amount",
+                "type":"uint256"
+            }
+        ],
+        "name":"validatorMisdemeanor",
+        "type":"event"
+    },
+    {
+        "anonymous":false,
+        "inputs":[
+
+        ],
+        "name":"validatorSetUpdated",
+        "type":"event"
+    },
+    {
+        "inputs":[
+
+        ],
+        "name":"BIND_CHANNELID",
+        "outputs":[
+            {
+                "internalType":"uint8",
+                "name":"",
+                "type":"uint8"
+            }
+        ],
+        "stateMutability":"view",
+        "type":"function"
+    },
+    {
+        "inputs":[
+
+        ],
+        "name":"BURN_ADDRESS",
+        "outputs":[
+            {
+                "internalType":"address",
+                "name":"",
+                "type":"address"
+            }
+        ],
+        "stateMutability":"view",
+        "type":"function"
+    },
+    {
+        "inputs":[
+
+        ],
+        "name":"BURN_RATIO_SCALE",
+        "outputs":[
+            {
+                "internalType":"uint256",
+                "name":"",
+                "type":"uint256"
+            }
+        ],
+        "stateMutability":"view",
+        "type":"function"
+    },
+    {
+        "inputs":[
+
+        ],
+        "name":"CODE_OK",
+        "outputs":[
+            {
+                "internalType":"uint32",
+                "name":"",
+                "type":"uint32"
+            }
+        ],
+        "stateMutability":"view",
+        "type":"function"
+    },
+    {
+        "inputs":[
+
+        ],
+        "name":"CROSS_CHAIN_CONTRACT_ADDR",
+        "outputs":[
+            {
+                "internalType":"address",
+                "name":"",
+                "type":"address"
+            }
+        ],
+        "stateMutability":"view",
+        "type":"function"
+    },
+    {
+        "inputs":[
+
+        ],
+        "name":"CROSS_STAKE_CHANNELID",
+        "outputs":[
+            {
+                "internalType":"uint8",
+                "name":"",
+                "type":"uint8"
+            }
+        ],
+        "stateMutability":"view",
+        "type":"function"
+    },
+    {
+        "inputs":[
+
+        ],
+        "name":"DUSTY_INCOMING",
+        "outputs":[
+            {
+                "internalType":"uint256",
+                "name":"",
+                "type":"uint256"
+            }
+        ],
+        "stateMutability":"view",
+        "type":"function"
+    },
+    {
+        "inputs":[
+
+        ],
+        "name":"EPOCH",
+        "outputs":[
+            {
+                "internalType":"uint256",
+                "name":"",
+                "type":"uint256"
+            }
+        ],
+        "stateMutability":"view",
+        "type":"function"
+    },
+    {
+        "inputs":[
+
+        ],
+        "name":"ERROR_FAIL_CHECK_VALIDATORS",
+        "outputs":[
+            {
+                "internalType":"uint32",
+                "name":"",
+                "type":"uint32"
+            }
+        ],
+        "stateMutability":"view",
+        "type":"function"
+    },
+    {
+        "inputs":[
+
+        ],
+        "name":"ERROR_FAIL_DECODE",
+        "outputs":[
+            {
+                "internalType":"uint32",
+                "name":"",
+                "type":"uint32"
+            }
+        ],
+        "stateMutability":"view",
+        "type":"function"
+    },
+    {
+        "inputs":[
+
+        ],
+        "name":"ERROR_LEN_OF_VAL_MISMATCH",
+        "outputs":[
+            {
+                "internalType":"uint32",
+                "name":"",
+                "type":"uint32"
+            }
+        ],
+        "stateMutability":"view",
+        "type":"function"
+    },
+    {
+        "inputs":[
+
+        ],
+        "name":"ERROR_RELAYFEE_TOO_LARGE",
+        "outputs":[
+            {
+                "internalType":"uint32",
+                "name":"",
+                "type":"uint32"
+            }
+        ],
+        "stateMutability":"view",
+        "type":"function"
+    },
+    {
+        "inputs":[
+
+        ],
+        "name":"ERROR_UNKNOWN_PACKAGE_TYPE",
+        "outputs":[
+            {
+                "internalType":"uint32",
+                "name":"",
+                "type":"uint32"
+            }
+        ],
+        "stateMutability":"view",
+        "type":"function"
+    },
+    {
+        "inputs":[
+
+        ],
+        "name":"EXPIRE_TIME_SECOND_GAP",
+        "outputs":[
+            {
+                "internalType":"uint256",
+                "name":"",
+                "type":"uint256"
+            }
+        ],
+        "stateMutability":"view",
+        "type":"function"
+    },
+    {
+        "inputs":[
+
+        ],
+        "name":"GOV_CHANNELID",
+        "outputs":[
+            {
+                "internalType":"uint8",
+                "name":"",
+                "type":"uint8"
+            }
+        ],
+        "stateMutability":"view",
+        "type":"function"
+    },
+    {
+        "inputs":[
+
+        ],
+        "name":"GOV_HUB_ADDR",
+        "outputs":[
+            {
+                "internalType":"address",
+                "name":"",
+                "type":"address"
+            }
+        ],
+        "stateMutability":"view",
+        "type":"function"
+    },
+    {
+        "inputs":[
+
+        ],
+        "name":"INCENTIVIZE_ADDR",
+        "outputs":[
+            {
+                "internalType":"address",
+                "name":"",
+                "type":"address"
+            }
+        ],
+        "stateMutability":"view",
+        "type":"function"
+    },
+    {
+        "inputs":[
+
+        ],
+        "name":"INIT_BURN_RATIO",
+        "outputs":[
+            {
+                "internalType":"uint256",
+                "name":"",
+                "type":"uint256"
+            }
+        ],
+        "stateMutability":"view",
+        "type":"function"
+    },
+    {
+        "inputs":[
+
+        ],
+        "name":"INIT_FINALITY_REWARD_RATIO",
+        "outputs":[
+            {
+                "internalType":"uint256",
+                "name":"",
+                "type":"uint256"
+            }
+        ],
+        "stateMutability":"view",
+        "type":"function"
+    },
+    {
+        "inputs":[
+
+        ],
+        "name":"INIT_MAINTAIN_SLASH_SCALE",
+        "outputs":[
+            {
+                "internalType":"uint256",
+                "name":"",
+                "type":"uint256"
+            }
+        ],
+        "stateMutability":"view",
+        "type":"function"
+    },
+    {
+        "inputs":[
+
+        ],
+        "name":"INIT_MAX_NUM_OF_MAINTAINING",
+        "outputs":[
+            {
+                "internalType":"uint256",
+                "name":"",
+                "type":"uint256"
+            }
+        ],
+        "stateMutability":"view",
+        "type":"function"
+    },
+    {
+        "inputs":[
+
+        ],
+        "name":"INIT_NUM_OF_CABINETS",
+        "outputs":[
+            {
+                "internalType":"uint256",
+                "name":"",
+                "type":"uint256"
+            }
+        ],
+        "stateMutability":"view",
+        "type":"function"
+    },
+    {
+        "inputs":[
+
+        ],
+        "name":"INIT_VALIDATORSET_BYTES",
+        "outputs":[
+            {
+                "internalType":"bytes",
+                "name":"",
+                "type":"bytes"
+            }
+        ],
+        "stateMutability":"view",
+        "type":"function"
+    },
+    {
+        "inputs":[
+
+        ],
+        "name":"JAIL_MESSAGE_TYPE",
+        "outputs":[
+            {
+                "internalType":"uint8",
+                "name":"",
+                "type":"uint8"
+            }
+        ],
+        "stateMutability":"view",
+        "type":"function"
+    },
+    {
+        "inputs":[
+
+        ],
+        "name":"LIGHT_CLIENT_ADDR",
+        "outputs":[
+            {
+                "internalType":"address",
+                "name":"",
+                "type":"address"
+            }
+        ],
+        "stateMutability":"view",
+        "type":"function"
+    },
+    {
+        "inputs":[
+
+        ],
+        "name":"MAX_NUM_OF_VALIDATORS",
+        "outputs":[
+            {
+                "internalType":"uint256",
+                "name":"",
+                "type":"uint256"
+            }
+        ],
+        "stateMutability":"view",
+        "type":"function"
+    },
+    {
+        "inputs":[
+
+        ],
+        "name":"PRECISION",
+        "outputs":[
+            {
+                "internalType":"uint256",
+                "name":"",
+                "type":"uint256"
+            }
+        ],
+        "stateMutability":"view",
+        "type":"function"
+    },
+    {
+        "inputs":[
+
+        ],
+        "name":"RELAYERHUB_CONTRACT_ADDR",
+        "outputs":[
+            {
+                "internalType":"address",
+                "name":"",
+                "type":"address"
+            }
+        ],
+        "stateMutability":"view",
+        "type":"function"
+    },
+    {
+        "inputs":[
+
+        ],
+        "name":"SLASH_CHANNELID",
+        "outputs":[
+            {
+                "internalType":"uint8",
+                "name":"",
+                "type":"uint8"
+            }
+        ],
+        "stateMutability":"view",
+        "type":"function"
+    },
+    {
+        "inputs":[
+
+        ],
+        "name":"SLASH_CONTRACT_ADDR",
+        "outputs":[
+            {
+                "internalType":"address",
+                "name":"",
+                "type":"address"
+            }
+        ],
+        "stateMutability":"view",
+        "type":"function"
+    },
+    {
+        "inputs":[
+
+        ],
+        "name":"STAKING_CHANNELID",
+        "outputs":[
+            {
+                "internalType":"uint8",
+                "name":"",
+                "type":"uint8"
+            }
+        ],
+        "stateMutability":"view",
+        "type":"function"
+    },
+    {
+        "inputs":[
+
+        ],
+        "name":"STAKING_CONTRACT_ADDR",
+        "outputs":[
+            {
+                "internalType":"address",
+                "name":"",
+                "type":"address"
+            }
+        ],
+        "stateMutability":"view",
+        "type":"function"
+    },
+    {
+        "inputs":[
+
+        ],
+        "name":"SYSTEM_REWARD_ADDR",
+        "outputs":[
+            {
+                "internalType":"address",
+                "name":"",
+                "type":"address"
+            }
+        ],
+        "stateMutability":"view",
+        "type":"function"
+    },
+    {
+        "inputs":[
+
+        ],
+        "name":"TOKEN_HUB_ADDR",
+        "outputs":[
+            {
+                "internalType":"address",
+                "name":"",
+                "type":"address"
+            }
+        ],
+        "stateMutability":"view",
+        "type":"function"
+    },
+    {
+        "inputs":[
+
+        ],
+        "name":"TOKEN_MANAGER_ADDR",
+        "outputs":[
+            {
+                "internalType":"address",
+                "name":"",
+                "type":"address"
+            }
+        ],
+        "stateMutability":"view",
+        "type":"function"
+    },
+    {
+        "inputs":[
+
+        ],
+        "name":"TRANSFER_IN_CHANNELID",
+        "outputs":[
+            {
+                "internalType":"uint8",
+                "name":"",
+                "type":"uint8"
+            }
+        ],
+        "stateMutability":"view",
+        "type":"function"
+    },
+    {
+        "inputs":[
+
+        ],
+        "name":"TRANSFER_OUT_CHANNELID",
+        "outputs":[
+            {
+                "internalType":"uint8",
+                "name":"",
+                "type":"uint8"
+            }
+        ],
+        "stateMutability":"view",
+        "type":"function"
+    },
+    {
+        "inputs":[
+
+        ],
+        "name":"VALIDATORS_UPDATE_MESSAGE_TYPE",
+        "outputs":[
+            {
+                "internalType":"uint8",
+                "name":"",
+                "type":"uint8"
+            }
+        ],
+        "stateMutability":"view",
+        "type":"function"
+    },
+    {
+        "inputs":[
+
+        ],
+        "name":"VALIDATOR_CONTRACT_ADDR",
+        "outputs":[
+            {
+                "internalType":"address",
+                "name":"",
+                "type":"address"
+            }
+        ],
+        "stateMutability":"view",
+        "type":"function"
+    },
+    {
+        "inputs":[
+
+        ],
+        "name":"alreadyInit",
+        "outputs":[
+            {
+                "internalType":"bool",
+                "name":"",
+                "type":"bool"
+            }
+        ],
+        "stateMutability":"view",
+        "type":"function"
+    },
+    {
+        "inputs":[
+
+        ],
+        "name":"bscChainID",
+        "outputs":[
+            {
+                "internalType":"uint16",
+                "name":"",
+                "type":"uint16"
+            }
+        ],
+        "stateMutability":"view",
+        "type":"function"
+    },
+    {
+        "inputs":[
+
+        ],
+        "name":"burnRatio",
+        "outputs":[
+            {
+                "internalType":"uint256",
+                "name":"",
+                "type":"uint256"
+            }
+        ],
+        "stateMutability":"view",
+        "type":"function"
+    },
+    {
+        "inputs":[
+
+        ],
+        "name":"burnRatioInitialized",
+        "outputs":[
+            {
+                "internalType":"bool",
+                "name":"",
+                "type":"bool"
+            }
+        ],
+        "stateMutability":"view",
+        "type":"function"
+    },
+    {
+        "inputs":[
+            {
+                "internalType":"uint256",
+                "name":"index",
+                "type":"uint256"
+            }
+        ],
+        "name":"canEnterMaintenance",
+        "outputs":[
+            {
+                "internalType":"bool",
+                "name":"",
+                "type":"bool"
+            }
+        ],
+        "stateMutability":"view",
+        "type":"function"
+    },
+    {
+        "inputs":[
+            {
+                "internalType":"uint256",
+                "name":"",
+                "type":"uint256"
+            }
+        ],
+        "name":"currentValidatorSet",
+        "outputs":[
+            {
+                "internalType":"address",
+                "name":"consensusAddress",
+                "type":"address"
+            },
+            {
+                "internalType":"address payable",
+                "name":"feeAddress",
+                "type":"address"
+            },
+            {
+                "internalType":"address",
+                "name":"BBCFeeAddress",
+                "type":"address"
+            },
+            {
+                "internalType":"uint64",
+                "name":"votingPower",
+                "type":"uint64"
+            },
+            {
+                "internalType":"bool",
+                "name":"jailed",
+                "type":"bool"
+            },
+            {
+                "internalType":"uint256",
+                "name":"incoming",
+                "type":"uint256"
+            }
+        ],
+        "stateMutability":"view",
+        "type":"function"
+    },
+    {
+        "inputs":[
+            {
+                "internalType":"address",
+                "name":"",
+                "type":"address"
+            }
+        ],
+        "name":"currentValidatorSetMap",
+        "outputs":[
+            {
+                "internalType":"uint256",
+                "name":"",
+                "type":"uint256"
+            }
+        ],
+        "stateMutability":"view",
+        "type":"function"
+    },
+    {
+        "inputs":[
+            {
+                "internalType":"address",
+                "name":"valAddr",
+                "type":"address"
+            }
+        ],
+        "name":"deposit",
+        "outputs":[
+
+        ],
+        "stateMutability":"payable",
+        "type":"function"
+    },
+    {
+        "inputs":[
+            {
+                "internalType":"address[]",
+                "name":"valAddrs",
+                "type":"address[]"
+            },
+            {
+                "internalType":"uint256[]",
+                "name":"weights",
+                "type":"uint256[]"
+            }
+        ],
+        "name":"distributeFinalityReward",
+        "outputs":[
+
+        ],
+        "stateMutability":"nonpayable",
+        "type":"function"
+    },
+    {
+        "inputs":[
+
+        ],
+        "name":"enterMaintenance",
+        "outputs":[
+
+        ],
+        "stateMutability":"nonpayable",
+        "type":"function"
+    },
+    {
+        "inputs":[
+
+        ],
+        "name":"exitMaintenance",
+        "outputs":[
+
+        ],
+        "stateMutability":"nonpayable",
+        "type":"function"
+    },
+    {
+        "inputs":[
+
+        ],
+        "name":"expireTimeSecondGap",
+        "outputs":[
+            {
+                "internalType":"uint256",
+                "name":"",
+                "type":"uint256"
+            }
+        ],
+        "stateMutability":"view",
+        "type":"function"
+    },
+    {
+        "inputs":[
+            {
+                "internalType":"address",
+                "name":"validator",
+                "type":"address"
+            }
+        ],
+        "name":"felony",
+        "outputs":[
+
+        ],
+        "stateMutability":"nonpayable",
+        "type":"function"
+    },
+    {
+        "inputs":[
+
+        ],
+        "name":"finalityRewardRatio",
+        "outputs":[
+            {
+                "internalType":"uint256",
+                "name":"",
+                "type":"uint256"
+            }
+        ],
+        "stateMutability":"view",
+        "type":"function"
+    },
+    {
+        "inputs":[
+            {
+                "internalType":"address",
+                "name":"_validator",
+                "type":"address"
+            }
+        ],
+        "name":"getCurrentValidatorIndex",
+        "outputs":[
+            {
+                "internalType":"uint256",
+                "name":"",
+                "type":"uint256"
+            }
+        ],
+        "stateMutability":"view",
+        "type":"function"
+    },
+    {
+        "inputs":[
+            {
+                "internalType":"address",
+                "name":"validator",
+                "type":"address"
+            }
+        ],
+        "name":"getIncoming",
+        "outputs":[
+            {
+                "internalType":"uint256",
+                "name":"",
+                "type":"uint256"
+            }
+        ],
+        "stateMutability":"view",
+        "type":"function"
+    },
+    {
+        "inputs":[
+
+        ],
+        "name":"getLivingValidators",
+        "outputs":[
+            {
+                "internalType":"address[]",
+                "name":"",
+                "type":"address[]"
+            },
+            {
+                "internalType":"bytes[]",
+                "name":"",
+                "type":"bytes[]"
+            }
+        ],
+        "stateMutability":"view",
+        "type":"function"
+    },
+    {
+        "inputs":[
+
+        ],
+        "name":"getMiningValidators",
+        "outputs":[
+            {
+                "internalType":"address[]",
+                "name":"",
+                "type":"address[]"
+            },
+            {
+                "internalType":"bytes[]",
+                "name":"",
+                "type":"bytes[]"
+            }
+        ],
+        "stateMutability":"view",
+        "type":"function"
+    },
+    {
+        "inputs":[
+
+        ],
+        "name":"getValidators",
+        "outputs":[
+            {
+                "internalType":"address[]",
+                "name":"",
+                "type":"address[]"
+            }
+        ],
+        "stateMutability":"view",
+        "type":"function"
+    },
+    {
+        "inputs":[
+
+        ],
+        "name":"getWorkingValidatorCount",
+        "outputs":[
+            {
+                "internalType":"uint256",
+                "name":"workingValidatorCount",
+                "type":"uint256"
+            }
+        ],
+        "stateMutability":"view",
+        "type":"function"
+    },
+    {
+        "inputs":[
+            {
+                "internalType":"uint8",
+                "name":"channelId",
+                "type":"uint8"
+            },
+            {
+                "internalType":"bytes",
+                "name":"msgBytes",
+                "type":"bytes"
+            }
+        ],
+        "name":"handleAckPackage",
+        "outputs":[
+
+        ],
+        "stateMutability":"nonpayable",
+        "type":"function"
+    },
+    {
+        "inputs":[
+            {
+                "internalType":"uint8",
+                "name":"channelId",
+                "type":"uint8"
+            },
+            {
+                "internalType":"bytes",
+                "name":"msgBytes",
+                "type":"bytes"
+            }
+        ],
+        "name":"handleFailAckPackage",
+        "outputs":[
+
+        ],
+        "stateMutability":"nonpayable",
+        "type":"function"
+    },
+    {
+        "inputs":[
+            {
+                "internalType":"uint8",
+                "name":"",
+                "type":"uint8"
+            },
+            {
+                "internalType":"bytes",
+                "name":"msgBytes",
+                "type":"bytes"
+            }
+        ],
+        "name":"handleSynPackage",
+        "outputs":[
+            {
+                "internalType":"bytes",
+                "name":"responsePayload",
+                "type":"bytes"
+            }
+        ],
+        "stateMutability":"nonpayable",
+        "type":"function"
+    },
+    {
+        "inputs":[
+
+        ],
+        "name":"init",
+        "outputs":[
+
+        ],
+        "stateMutability":"nonpayable",
+        "type":"function"
+    },
+    {
+        "inputs":[
+            {
+                "internalType":"address",
+                "name":"validator",
+                "type":"address"
+            }
+        ],
+        "name":"isCurrentValidator",
+        "outputs":[
+            {
+                "internalType":"bool",
+                "name":"",
+                "type":"bool"
+            }
+        ],
+        "stateMutability":"view",
+        "type":"function"
+    },
+    {
+        "inputs":[
+            {
+                "internalType":"uint256",
+                "name":"index",
+                "type":"uint256"
+            }
+        ],
+        "name":"isWorkingValidator",
+        "outputs":[
+            {
+                "internalType":"bool",
+                "name":"",
+                "type":"bool"
+            }
+        ],
+        "stateMutability":"view",
+        "type":"function"
+    },
+    {
+        "inputs":[
+
+        ],
+        "name":"maintainSlashScale",
+        "outputs":[
+            {
+                "internalType":"uint256",
+                "name":"",
+                "type":"uint256"
+            }
+        ],
+        "stateMutability":"view",
+        "type":"function"
+    },
+    {
+        "inputs":[
+
+        ],
+        "name":"maxNumOfCandidates",
+        "outputs":[
+            {
+                "internalType":"uint256",
+                "name":"",
+                "type":"uint256"
+            }
+        ],
+        "stateMutability":"view",
+        "type":"function"
+    },
+    {
+        "inputs":[
+
+        ],
+        "name":"maxNumOfMaintaining",
+        "outputs":[
+            {
+                "internalType":"uint256",
+                "name":"",
+                "type":"uint256"
+            }
+        ],
+        "stateMutability":"view",
+        "type":"function"
+    },
+    {
+        "inputs":[
+
+        ],
+        "name":"maxNumOfWorkingCandidates",
+        "outputs":[
+            {
+                "internalType":"uint256",
+                "name":"",
+                "type":"uint256"
+            }
+        ],
+        "stateMutability":"view",
+        "type":"function"
+    },
+    {
+        "inputs":[
+            {
+                "internalType":"address",
+                "name":"validator",
+                "type":"address"
+            }
+        ],
+        "name":"misdemeanor",
+        "outputs":[
+
+        ],
+        "stateMutability":"nonpayable",
+        "type":"function"
+    },
+    {
+        "inputs":[
+
+        ],
+        "name":"numOfCabinets",
+        "outputs":[
+            {
+                "internalType":"uint256",
+                "name":"",
+                "type":"uint256"
+            }
+        ],
+        "stateMutability":"view",
+        "type":"function"
+    },
+    {
+        "inputs":[
+
+        ],
+        "name":"numOfJailed",
+        "outputs":[
+            {
+                "internalType":"uint256",
+                "name":"",
+                "type":"uint256"
+            }
+        ],
+        "stateMutability":"view",
+        "type":"function"
+    },
+    {
+        "inputs":[
+
+        ],
+        "name":"numOfMaintaining",
+        "outputs":[
+            {
+                "internalType":"uint256",
+                "name":"",
+                "type":"uint256"
+            }
+        ],
+        "stateMutability":"view",
+        "type":"function"
+    },
+    {
+        "inputs":[
+
+        ],
+        "name":"previousHeight",
+        "outputs":[
+            {
+                "internalType":"uint256",
+                "name":"",
+                "type":"uint256"
+            }
+        ],
+        "stateMutability":"view",
+        "type":"function"
+    },
+    {
+        "inputs":[
+
+        ],
+        "name":"totalInComing",
+        "outputs":[
+            {
+                "internalType":"uint256",
+                "name":"",
+                "type":"uint256"
+            }
+        ],
+        "stateMutability":"view",
+        "type":"function"
+    },
+    {
+        "inputs":[
+            {
+                "internalType":"string",
+                "name":"key",
+                "type":"string"
+            },
+            {
+                "internalType":"bytes",
+                "name":"value",
+                "type":"bytes"
+            }
+        ],
+        "name":"updateParam",
+        "outputs":[
+
+        ],
+        "stateMutability":"nonpayable",
+        "type":"function"
+    },
+    {
+        "inputs":[
+            {
+                "internalType":"uint256",
+                "name":"",
+                "type":"uint256"
+            }
+        ],
+        "name":"validatorExtraSet",
+        "outputs":[
+            {
+                "internalType":"uint256",
+                "name":"enterMaintenanceHeight",
+                "type":"uint256"
+            },
+            {
+                "internalType":"bool",
+                "name":"isMaintaining",
+                "type":"bool"
+            },
+            {
+                "internalType":"bytes",
+                "name":"voteAddress",
+                "type":"bytes"
+            }
+        ],
+        "stateMutability":"view",
+        "type":"function"
+    },
+    {
+        "stateMutability":"payable",
+        "type":"receive"
+    }
+]
 `
 
 const slashABI = `
diff --git a/consensus/parlia/lubanFork.go b/consensus/parlia/lubanFork.go
new file mode 100644
index 0000000000..6ce14364c4
--- /dev/null
+++ b/consensus/parlia/lubanFork.go
@@ -0,0 +1,49 @@
+package parlia
+
+import (
+	"context"
+	"math/big"
+
+	"github.com/ethereum/go-ethereum/common"
+	"github.com/ethereum/go-ethereum/common/hexutil"
+	"github.com/ethereum/go-ethereum/common/math"
+	"github.com/ethereum/go-ethereum/core/systemcontracts"
+	"github.com/ethereum/go-ethereum/internal/ethapi"
+	"github.com/ethereum/go-ethereum/log"
+	"github.com/ethereum/go-ethereum/rpc"
+)
+
+func (p *Parlia) getCurrentValidatorsBeforeLuban(blockHash common.Hash, blockNumber *big.Int) ([]common.Address, error) {
+	blockNr := rpc.BlockNumberOrHashWithHash(blockHash, false)
+
+	// prepare different method
+	method := "getValidators"
+	if p.chainConfig.IsEuler(blockNumber) {
+		method = "getMiningValidators"
+	}
+
+	ctx, cancel := context.WithCancel(context.Background())
+	// cancel when we are finished consuming integers
+	defer cancel()
+	data, err := p.validatorSetABIBeforeLuban.Pack(method)
+	if err != nil {
+		log.Error("Unable to pack tx for getValidators", "error", err)
+		return nil, err
+	}
+	// do smart contract call
+	msgData := (hexutil.Bytes)(data)
+	toAddress := common.HexToAddress(systemcontracts.ValidatorContract)
+	gas := (hexutil.Uint64)(uint64(math.MaxUint64 / 2))
+	result, err := p.ethAPI.Call(ctx, ethapi.TransactionArgs{
+		Gas:  &gas,
+		To:   &toAddress,
+		Data: &msgData,
+	}, blockNr, nil)
+	if err != nil {
+		return nil, err
+	}
+
+	var valSet []common.Address
+	err = p.validatorSetABIBeforeLuban.UnpackIntoInterface(&valSet, method, result)
+	return valSet, err
+}
diff --git a/consensus/parlia/parlia.go b/consensus/parlia/parlia.go
index b1abc1221f..a1eaf83a30 100644
--- a/consensus/parlia/parlia.go
+++ b/consensus/parlia/parlia.go
@@ -16,6 +16,8 @@ import (
 	"time"
 
 	lru "github.com/hashicorp/golang-lru"
+	"github.com/prysmaticlabs/prysm/v3/crypto/bls"
+	"github.com/willf/bitset"
 	"golang.org/x/crypto/sha3"
 
 	"github.com/ethereum/go-ethereum"
@@ -24,6 +26,7 @@ import (
 	"github.com/ethereum/go-ethereum/common"
 	"github.com/ethereum/go-ethereum/common/gopool"
 	"github.com/ethereum/go-ethereum/common/hexutil"
+	cmath "github.com/ethereum/go-ethereum/common/math"
 	"github.com/ethereum/go-ethereum/consensus"
 	"github.com/ethereum/go-ethereum/consensus/misc"
 	"github.com/ethereum/go-ethereum/core"
@@ -36,6 +39,7 @@ import (
 	"github.com/ethereum/go-ethereum/ethdb"
 	"github.com/ethereum/go-ethereum/internal/ethapi"
 	"github.com/ethereum/go-ethereum/log"
+	"github.com/ethereum/go-ethereum/metrics"
 	"github.com/ethereum/go-ethereum/params"
 	"github.com/ethereum/go-ethereum/rlp"
 	"github.com/ethereum/go-ethereum/rpc"
@@ -53,13 +57,17 @@ const (
 	extraSeal        = 65 // Fixed number of extra-data suffix bytes reserved for signer seal
 	nextForkHashSize = 4  // Fixed number of extra-data suffix bytes reserved for nextForkHash.
 
-	validatorBytesLength = common.AddressLength
-	wiggleTime           = uint64(1) // second, Random delay (per signer) to allow concurrent signers
-	initialBackOffTime   = uint64(1) // second
-	processBackOffTime   = uint64(1) // second
+	validatorBytesLengthBeforeLuban = common.AddressLength
+	validatorBytesLength            = common.AddressLength + types.BLSPublicKeyLength
+	validatorNumberSize             = 1 // Fixed number of extra prefix bytes reserved for validator number after Luban
+
+	wiggleTime         = uint64(1) // second, Random delay (per signer) to allow concurrent signers
+	initialBackOffTime = uint64(1) // second
+	processBackOffTime = uint64(1) // second
 
 	systemRewardPercent = 4 // it means 1/2^4 = 1/16 percentage of gas fee incoming will be distributed to system
 
+	collectAdditionalVotesRewardRatio = float64(1) // ratio of additional reward for collecting more votes than needed
 )
 
 var (
@@ -67,7 +75,9 @@ var (
 	diffInTurn = big.NewInt(2)            // Block difficulty for in-turn signatures
 	diffNoTurn = big.NewInt(1)            // Block difficulty for out-of-turn signatures
 	// 100 native token
-	maxSystemBalance = new(big.Int).Mul(big.NewInt(100), big.NewInt(params.Ether))
+	maxSystemBalance                 = new(big.Int).Mul(big.NewInt(100), big.NewInt(params.Ether))
+	verifyVoteAttestationFailedGauge = metrics.NewRegisteredGauge("parlia/verifyVoteAttestationFailed", nil)
+	updateAttestationFailedGauge     = metrics.NewRegisteredGauge("parlia/updateAttestationFailed", nil)
 
 	systemContracts = map[common.Address]bool{
 		common.HexToAddress(systemcontracts.ValidatorContract):          true,
@@ -208,9 +218,11 @@ type Parlia struct {
 
 	lock sync.RWMutex // Protects the signer fields
 
-	ethAPI          *ethapi.PublicBlockChainAPI
-	validatorSetABI abi.ABI
-	slashABI        abi.ABI
+	ethAPI                     *ethapi.PublicBlockChainAPI
+	VotePool                   consensus.VotePool
+	validatorSetABIBeforeLuban abi.ABI
+	validatorSetABI            abi.ABI
+	slashABI                   abi.ABI
 
 	// The fields below are for testing only
 	fakeDiff bool // Skip difficulty verifications
@@ -240,6 +252,10 @@ func New(
 	if err != nil {
 		panic(err)
 	}
+	vABIBeforeLuban, err := abi.JSON(strings.NewReader(validatorSetABIBeforeLuban))
+	if err != nil {
+		panic(err)
+	}
 	vABI, err := abi.JSON(strings.NewReader(validatorSetABI))
 	if err != nil {
 		panic(err)
@@ -249,16 +265,17 @@ func New(
 		panic(err)
 	}
 	c := &Parlia{
-		chainConfig:     chainConfig,
-		config:          parliaConfig,
-		genesisHash:     genesisHash,
-		db:              db,
-		ethAPI:          ethAPI,
-		recentSnaps:     recentSnaps,
-		signatures:      signatures,
-		validatorSetABI: vABI,
-		slashABI:        sABI,
-		signer:          types.NewEIP155Signer(chainConfig.ChainID),
+		chainConfig:                chainConfig,
+		config:                     parliaConfig,
+		genesisHash:                genesisHash,
+		db:                         db,
+		ethAPI:                     ethAPI,
+		recentSnaps:                recentSnaps,
+		signatures:                 signatures,
+		validatorSetABIBeforeLuban: vABIBeforeLuban,
+		validatorSetABI:            vABI,
+		slashABI:                   sABI,
+		signer:                     types.NewEIP155Signer(chainConfig.ChainID),
 	}
 
 	return c
@@ -317,6 +334,160 @@ func (p *Parlia) VerifyHeaders(chain consensus.ChainHeaderReader, headers []*typ
 	return abort, results
 }
 
+// getValidatorBytesFromHeader returns the validators bytes extracted from the header's extra field if exists.
+// The validators bytes would be contained only in the epoch block's header, and its each validator bytes length is fixed.
+// On luban fork, we introduce vote attestation into the header's extra field, so extra format is different from before.
+// Before luban fork: |---Extra Vanity---|---Validators Bytes (or Empty)---|---Extra Seal---|
+// After luban fork:  |---Extra Vanity---|---Validators Number and Validators Bytes (or Empty)---|---Vote Attestation (or Empty)---|---Extra Seal---|
+func getValidatorBytesFromHeader(header *types.Header, chainConfig *params.ChainConfig, parliaConfig *params.ParliaConfig) []byte {
+	if len(header.Extra) <= extraVanity+extraSeal {
+		return nil
+	}
+
+	if !chainConfig.IsLuban(header.Number) {
+		if header.Number.Uint64()%parliaConfig.Epoch == 0 && (len(header.Extra)-extraSeal-extraVanity)%validatorBytesLengthBeforeLuban != 0 {
+			return nil
+		}
+		return header.Extra[extraVanity : len(header.Extra)-extraSeal]
+	}
+
+	if header.Number.Uint64()%parliaConfig.Epoch != 0 {
+		return nil
+	}
+	num := int(header.Extra[extraVanity])
+	if num == 0 || len(header.Extra) <= extraVanity+extraSeal+num*validatorBytesLength {
+		return nil
+	}
+	start := extraVanity + validatorNumberSize
+	end := start + num*validatorBytesLength
+	return header.Extra[start:end]
+}
+
+// getVoteAttestationFromHeader returns the vote attestation extracted from the header's extra field if exists.
+func getVoteAttestationFromHeader(header *types.Header, chainConfig *params.ChainConfig, parliaConfig *params.ParliaConfig) (*types.VoteAttestation, error) {
+	if len(header.Extra) <= extraVanity+extraSeal {
+		return nil, nil
+	}
+
+	if !chainConfig.IsLuban(header.Number) {
+		return nil, nil
+	}
+
+	var attestationBytes []byte
+	if header.Number.Uint64()%parliaConfig.Epoch != 0 {
+		attestationBytes = header.Extra[extraVanity : len(header.Extra)-extraSeal]
+	} else {
+		num := int(header.Extra[extraVanity])
+		if len(header.Extra) <= extraVanity+extraSeal+validatorNumberSize+num*validatorBytesLength {
+			return nil, nil
+		}
+		start := extraVanity + validatorNumberSize + num*validatorBytesLength
+		end := len(header.Extra) - extraSeal
+		attestationBytes = header.Extra[start:end]
+	}
+
+	var attestation types.VoteAttestation
+	if err := rlp.Decode(bytes.NewReader(attestationBytes), &attestation); err != nil {
+		return nil, fmt.Errorf("block %d has vote attestation info, decode err: %s", header.Number.Uint64(), err)
+	}
+	return &attestation, nil
+}
+
+// verifyVoteAttestation checks whether the vote attestation in the header is valid.
+func (p *Parlia) verifyVoteAttestation(chain consensus.ChainHeaderReader, header *types.Header, parents []*types.Header) error {
+	attestation, err := getVoteAttestationFromHeader(header, p.chainConfig, p.config)
+	if err != nil {
+		return err
+	}
+	if attestation == nil {
+		return nil
+	}
+	if attestation.Data == nil {
+		return fmt.Errorf("invalid attestation, vote data is nil")
+	}
+	if len(attestation.Extra) > types.MaxAttestationExtraLength {
+		return fmt.Errorf("invalid attestation, too large extra length: %d", len(attestation.Extra))
+	}
+
+	// Get parent block
+	number := header.Number.Uint64()
+	var parent *types.Header
+	if len(parents) > 0 {
+		parent = parents[len(parents)-1]
+	} else {
+		parent = chain.GetHeader(header.ParentHash, number-1)
+	}
+	if parent == nil || parent.Hash() != header.ParentHash {
+		return consensus.ErrUnknownAncestor
+	}
+
+	// The target block should be direct parent.
+	targetNumber := attestation.Data.TargetNumber
+	targetHash := attestation.Data.TargetHash
+	if targetNumber != parent.Number.Uint64() || targetHash != parent.Hash() {
+		return fmt.Errorf("invalid attestation, target mismatch, expected block: %d, hash: %s; real block: %d, hash: %s",
+			parent.Number.Uint64(), parent.Hash(), targetNumber, targetHash)
+	}
+
+	// The source block should be the highest justified block.
+	sourceNumber := attestation.Data.SourceNumber
+	sourceHash := attestation.Data.SourceHash
+	justifiedBlockNumber, justifiedBlockHash, err := p.GetJustifiedNumberAndHash(chain, parent)
+	if err != nil {
+		return fmt.Errorf("unexpected error when getting the highest justified number and hash")
+	}
+	if sourceNumber != justifiedBlockNumber || sourceHash != justifiedBlockHash {
+		return fmt.Errorf("invalid attestation, source mismatch, expected block: %d, hash: %s; real block: %d, hash: %s",
+			justifiedBlockNumber, justifiedBlockHash, sourceNumber, sourceHash)
+	}
+
+	// The snapshot should be the targetNumber-1 block's snapshot.
+	if len(parents) > 1 {
+		parents = parents[:len(parents)-1]
+	} else {
+		parents = nil
+	}
+	snap, err := p.snapshot(chain, parent.Number.Uint64()-1, parent.ParentHash, parents)
+	if err != nil {
+		return err
+	}
+
+	// Filter out valid validator from attestation.
+	validators := snap.validators()
+	validatorsBitSet := bitset.From([]uint64{uint64(attestation.VoteAddressSet)})
+	if validatorsBitSet.Count() > uint(len(validators)) {
+		return fmt.Errorf("invalid attestation, vote number larger than validators number")
+	}
+	votedAddrs := make([]bls.PublicKey, 0, validatorsBitSet.Count())
+	for index, val := range validators {
+		if !validatorsBitSet.Test(uint(index)) {
+			continue
+		}
+
+		voteAddr, err := bls.PublicKeyFromBytes(snap.Validators[val].VoteAddress[:])
+		if err != nil {
+			return fmt.Errorf("BLS public key converts failed: %v", err)
+		}
+		votedAddrs = append(votedAddrs, voteAddr)
+	}
+
+	// The valid voted validators should be no less than 2/3 validators.
+	if len(votedAddrs) < cmath.CeilDiv(len(snap.Validators)*2, 3) {
+		return fmt.Errorf("invalid attestation, not enough validators voted")
+	}
+
+	// Verify the aggregated signature.
+	aggSig, err := bls.SignatureFromBytes(attestation.AggSignature[:])
+	if err != nil {
+		return fmt.Errorf("BLS signature converts failed: %v", err)
+	}
+	if !aggSig.FastAggregateVerify(votedAddrs, attestation.Data.Hash()) {
+		return fmt.Errorf("invalid attestation, signature verify failed")
+	}
+
+	return nil
+}
+
 // verifyHeader checks whether a header conforms to the consensus rules.The
 // caller may optionally pass in a batch of parents (ascending order) to avoid
 // looking those up from the database. This is useful for concurrently verifying
@@ -325,7 +496,6 @@ func (p *Parlia) verifyHeader(chain consensus.ChainHeaderReader, header *types.H
 	if header.Number == nil {
 		return errUnknownBlock
 	}
-	number := header.Number.Uint64()
 
 	// Don't waste time checking blocks from the future
 	if header.Time > uint64(time.Now().Unix()) {
@@ -338,16 +508,17 @@ func (p *Parlia) verifyHeader(chain consensus.ChainHeaderReader, header *types.H
 	if len(header.Extra) < extraVanity+extraSeal {
 		return errMissingSignature
 	}
+
 	// check extra data
+	number := header.Number.Uint64()
 	isEpoch := number%p.config.Epoch == 0
 
 	// Ensure that the extra-data contains a signer list on checkpoint, but none otherwise
-	signersBytes := len(header.Extra) - extraVanity - extraSeal
-	if !isEpoch && signersBytes != 0 {
+	signersBytes := getValidatorBytesFromHeader(header, p.chainConfig, p.config)
+	if !isEpoch && len(signersBytes) != 0 {
 		return errExtraValidators
 	}
-
-	if isEpoch && signersBytes%validatorBytesLength != 0 {
+	if isEpoch && len(signersBytes) == 0 {
 		return errInvalidSpanValidators
 	}
 
@@ -426,11 +597,24 @@ func (p *Parlia) verifyCascadingFields(chain consensus.ChainHeaderReader, header
 		return fmt.Errorf("invalid gas limit: have %d, want %d += %d", header.GasLimit, parent.GasLimit, limit)
 	}
 
+	// Verify vote attestation for fast finality.
+	if err := p.verifyVoteAttestation(chain, header, parents); err != nil {
+		verifyVoteAttestationFailedGauge.Inc(1)
+		if chain.Config().IsPlato(header.Number) {
+			return err
+		}
+		log.Warn("Verify vote attestation failed", "error", err, "hash", header.Hash(), "number", header.Number,
+			"parent", header.ParentHash, "coinbase", header.Coinbase, "extra", common.Bytes2Hex(header.Extra))
+	}
+
 	// All basic checks passed, verify the seal and return
 	return p.verifySeal(chain, header, parents)
 }
 
 // snapshot retrieves the authorization snapshot at a given point in time.
+// !!! be careful
+// the block with `number` and `hash` is just the last element of `parents`,
+// unlike other interfaces such as verifyCascadingFields, `parents` are real parents
 func (p *Parlia) snapshot(chain consensus.ChainHeaderReader, number uint64, hash common.Hash, parents []*types.Header) (*Snapshot, error) {
 	// Search for a snapshot in memory or on disk for checkpoints
 	var (
@@ -454,25 +638,23 @@ func (p *Parlia) snapshot(chain consensus.ChainHeaderReader, number uint64, hash
 			}
 		}
 
-		// If we're at the genesis, snapshot the initial state.
-		if number == 0 {
+		// If we're at the genesis, snapshot the initial state. Alternatively if we have
+		// piled up more headers than allowed to be reorged (chain reinit from a freezer),
+		// consider the checkpoint trusted and snapshot it.
+		if number == 0 || (number%p.config.Epoch == 0 && (len(headers) > params.FullImmutabilityThreshold)) {
 			checkpoint := chain.GetHeaderByNumber(number)
 			if checkpoint != nil {
 				// get checkpoint data
 				hash := checkpoint.Hash()
 
-				if len(checkpoint.Extra) <= extraVanity+extraSeal {
-					return nil, errors.New("invalid extra-data for genesis block, check the genesis.json file")
-				}
-				validatorBytes := checkpoint.Extra[extraVanity : len(checkpoint.Extra)-extraSeal]
 				// get validators from headers
-				validators, err := ParseValidators(validatorBytes)
+				validators, voteAddrs, err := parseValidators(checkpoint, p.chainConfig, p.config)
 				if err != nil {
 					return nil, err
 				}
 
-				// new snap shot
-				snap = newSnapshot(p.config, p.signatures, number, hash, validators, p.ethAPI)
+				// new snapshot
+				snap = newSnapshot(p.config, p.signatures, number, hash, validators, voteAddrs, p.ethAPI)
 				if err := snap.store(p.db); err != nil {
 					return nil, err
 				}
@@ -511,7 +693,7 @@ func (p *Parlia) snapshot(chain consensus.ChainHeaderReader, number uint64, hash
 		headers[i], headers[len(headers)-1-i] = headers[len(headers)-1-i], headers[i]
 	}
 
-	snap, err := snap.apply(headers, chain, parents, p.chainConfig.ChainID)
+	snap, err := snap.apply(headers, chain, parents, p.chainConfig)
 	if err != nil {
 		return nil, err
 	}
@@ -595,6 +777,109 @@ func (p *Parlia) verifySeal(chain consensus.ChainHeaderReader, header *types.Hea
 	return nil
 }
 
+func (p *Parlia) prepareValidators(header *types.Header) error {
+	if header.Number.Uint64()%p.config.Epoch != 0 {
+		return nil
+	}
+
+	newValidators, voteAddressMap, err := p.getCurrentValidators(header.ParentHash, new(big.Int).Sub(header.Number, big.NewInt(1)))
+	if err != nil {
+		return err
+	}
+	// sort validator by address
+	sort.Sort(validatorsAscending(newValidators))
+	if !p.chainConfig.IsLuban(header.Number) {
+		for _, validator := range newValidators {
+			header.Extra = append(header.Extra, validator.Bytes()...)
+		}
+	} else {
+		header.Extra = append(header.Extra, byte(len(newValidators)))
+		for _, validator := range newValidators {
+			header.Extra = append(header.Extra, validator.Bytes()...)
+			header.Extra = append(header.Extra, voteAddressMap[validator].Bytes()...)
+		}
+	}
+	return nil
+}
+
+func (p *Parlia) assembleVoteAttestation(chain consensus.ChainHeaderReader, header *types.Header) error {
+	if !p.chainConfig.IsLuban(header.Number) || header.Number.Uint64() < 2 {
+		return nil
+	}
+
+	if p.VotePool == nil {
+		return errors.New("vote pool is nil")
+	}
+
+	// Fetch direct parent's votes
+	parent := chain.GetHeaderByHash(header.ParentHash)
+	if parent == nil {
+		return errors.New("parent not found")
+	}
+	snap, err := p.snapshot(chain, parent.Number.Uint64()-1, parent.ParentHash, nil)
+	if err != nil {
+		return err
+	}
+	votes := p.VotePool.FetchVoteByBlockHash(parent.Hash())
+	if len(votes) < cmath.CeilDiv(len(snap.Validators)*2, 3) {
+		return nil
+	}
+
+	// Prepare vote attestation
+	// Prepare vote data
+	justifiedBlockNumber, justifiedBlockHash, err := p.GetJustifiedNumberAndHash(chain, parent)
+	if err != nil {
+		return fmt.Errorf("unexpected error when getting the highest justified number and hash")
+	}
+	attestation := &types.VoteAttestation{
+		Data: &types.VoteData{
+			SourceNumber: justifiedBlockNumber,
+			SourceHash:   justifiedBlockHash,
+			TargetNumber: parent.Number.Uint64(),
+			TargetHash:   parent.Hash(),
+		},
+	}
+	// Check vote data from votes
+	for _, vote := range votes {
+		if vote.Data.Hash() != attestation.Data.Hash() {
+			return fmt.Errorf("vote check error, expected: %v, real: %v", attestation.Data, vote)
+		}
+	}
+	// Prepare aggregated vote signature
+	voteAddrSet := make(map[types.BLSPublicKey]struct{}, len(votes))
+	signatures := make([][]byte, 0, len(votes))
+	for _, vote := range votes {
+		voteAddrSet[vote.VoteAddress] = struct{}{}
+		signatures = append(signatures, vote.Signature[:])
+	}
+	sigs, err := bls.MultipleSignaturesFromBytes(signatures)
+	if err != nil {
+		return err
+	}
+	copy(attestation.AggSignature[:], bls.AggregateSignatures(sigs).Marshal())
+	// Prepare vote address bitset.
+	for _, valInfo := range snap.Validators {
+		if _, ok := voteAddrSet[valInfo.VoteAddress]; ok {
+			attestation.VoteAddressSet |= 1 << (valInfo.Index - 1) //Index is offset by 1
+		}
+	}
+
+	// Append attestation to header extra field.
+	buf := new(bytes.Buffer)
+	err = rlp.Encode(buf, attestation)
+	if err != nil {
+		return err
+	}
+
+	// Insert vote attestation into header extra ahead extra seal.
+	extraSealStart := len(header.Extra) - extraSeal
+	extraSealBytes := header.Extra[extraSealStart:]
+	header.Extra = append(header.Extra[0:extraSealStart], buf.Bytes()...)
+	header.Extra = append(header.Extra, extraSealBytes...)
+
+	return nil
+}
+
 // Prepare implements consensus.Engine, preparing all the consensus fields of the
 // header for running the transactions on top.
 func (p *Parlia) Prepare(chain consensus.ChainHeaderReader, header *types.Header) error {
@@ -618,16 +903,8 @@ func (p *Parlia) Prepare(chain consensus.ChainHeaderReader, header *types.Header
 	nextForkHash := forkid.NextForkHash(p.chainConfig, p.genesisHash, number)
 	header.Extra = append(header.Extra, nextForkHash[:]...)
 
-	if number%p.config.Epoch == 0 {
-		newValidators, err := p.getCurrentValidators(header.ParentHash, new(big.Int).Sub(header.Number, common.Big1))
-		if err != nil {
-			return err
-		}
-		// sort validator by address
-		sort.Sort(validatorsAscending(newValidators))
-		for _, validator := range newValidators {
-			header.Extra = append(header.Extra, validator.Bytes()...)
-		}
+	if err := p.prepareValidators(header); err != nil {
+		return err
 	}
 
 	// add extra seal space
@@ -648,6 +925,114 @@ func (p *Parlia) Prepare(chain consensus.ChainHeaderReader, header *types.Header
 	return nil
 }
 
+func (p *Parlia) verifyValidators(header *types.Header) error {
+	if header.Number.Uint64()%p.config.Epoch != 0 {
+		return nil
+	}
+
+	newValidators, voteAddressMap, err := p.getCurrentValidators(header.ParentHash, new(big.Int).Sub(header.Number, big.NewInt(1)))
+	if err != nil {
+		return err
+	}
+	// sort validator by address
+	sort.Sort(validatorsAscending(newValidators))
+	var validatorsBytes []byte
+	validatorsNumber := len(newValidators)
+	if !p.chainConfig.IsLuban(header.Number) {
+		validatorsBytes = make([]byte, validatorsNumber*validatorBytesLengthBeforeLuban)
+		for i, validator := range newValidators {
+			copy(validatorsBytes[i*validatorBytesLengthBeforeLuban:], validator.Bytes())
+		}
+	} else {
+		if uint8(validatorsNumber) != header.Extra[extraVanity] {
+			return errMismatchingEpochValidators
+		}
+		validatorsBytes = make([]byte, validatorsNumber*validatorBytesLength)
+		for i, validator := range newValidators {
+			copy(validatorsBytes[i*validatorBytesLength:], validator.Bytes())
+			copy(validatorsBytes[i*validatorBytesLength+common.AddressLength:], voteAddressMap[validator].Bytes())
+		}
+	}
+	if !bytes.Equal(getValidatorBytesFromHeader(header, p.chainConfig, p.config), validatorsBytes) {
+		return errMismatchingEpochValidators
+	}
+	return nil
+}
+
+func (p *Parlia) distributeFinalityReward(chain consensus.ChainHeaderReader, state *state.StateDB, header *types.Header,
+	cx core.ChainContext, txs *[]*types.Transaction, receipts *[]*types.Receipt, systemTxs *[]*types.Transaction,
+	usedGas *uint64, mining bool) error {
+	currentHeight := header.Number.Uint64()
+	epoch := p.config.Epoch
+	chainConfig := chain.Config()
+	if currentHeight%epoch != 0 {
+		return nil
+	}
+
+	head := header
+	accumulatedWeights := make(map[common.Address]uint64)
+	for height := currentHeight - 1; height+epoch >= currentHeight && height >= 1; height-- {
+		head = chain.GetHeaderByHash(head.ParentHash)
+		if head == nil {
+			return fmt.Errorf("header is nil at height %d", height)
+		}
+		voteAttestation, err := getVoteAttestationFromHeader(head, chainConfig, p.config)
+		if err != nil {
+			return err
+		}
+		if voteAttestation == nil {
+			continue
+		}
+		justifiedBlock := chain.GetHeaderByHash(voteAttestation.Data.TargetHash)
+		if justifiedBlock == nil {
+			log.Warn("justifiedBlock is nil at height %d", voteAttestation.Data.TargetNumber)
+			continue
+		}
+
+		snap, err := p.snapshot(chain, justifiedBlock.Number.Uint64()-1, justifiedBlock.ParentHash, nil)
+		if err != nil {
+			return err
+		}
+		validators := snap.validators()
+		validatorsBitSet := bitset.From([]uint64{uint64(voteAttestation.VoteAddressSet)})
+		if validatorsBitSet.Count() > uint(len(validators)) {
+			log.Error("invalid attestation, vote number larger than validators number")
+			continue
+		}
+		validVoteCount := 0
+		for index, val := range validators {
+			if validatorsBitSet.Test(uint(index)) {
+				accumulatedWeights[val] += 1
+				validVoteCount += 1
+			}
+		}
+		quorum := cmath.CeilDiv(len(snap.Validators)*2, 3)
+		if validVoteCount > quorum {
+			accumulatedWeights[head.Coinbase] += uint64(float64(validVoteCount-quorum) * collectAdditionalVotesRewardRatio)
+		}
+	}
+
+	validators := make([]common.Address, 0, len(accumulatedWeights))
+	weights := make([]*big.Int, 0, len(accumulatedWeights))
+	for val := range accumulatedWeights {
+		validators = append(validators, val)
+	}
+	sort.Sort(validatorsAscending(validators))
+	for _, val := range validators {
+		weights = append(weights, big.NewInt(int64(accumulatedWeights[val])))
+	}
+
+	// generate system transaction
+	method := "distributeFinalityReward"
+	data, err := p.validatorSetABI.Pack(method, validators, weights)
+	if err != nil {
+		log.Error("Unable to pack tx for distributeFinalityReward", "error", err)
+		return err
+	}
+	msg := p.getSystemMessage(header.Coinbase, common.HexToAddress(systemcontracts.ValidatorContract), data, common.Big0)
+	return p.applyTransaction(msg, state, header, cx, txs, receipts, systemTxs, usedGas, mining)
+}
+
 // Finalize implements consensus.Engine, ensuring no uncles are set, nor block
 // rewards given.
 func (p *Parlia) Finalize(chain consensus.ChainHeaderReader, header *types.Header, state *state.StateDB, txs *[]*types.Transaction,
@@ -662,27 +1047,15 @@ func (p *Parlia) Finalize(chain consensus.ChainHeaderReader, header *types.Heade
 	if !snap.isMajorityFork(hex.EncodeToString(nextForkHash[:])) {
 		log.Debug("there is a possible fork, and your client is not the majority. Please check...", "nextForkHash", hex.EncodeToString(nextForkHash[:]))
 	}
-	// If the block is a epoch end block, verify the validator list
+	// If the block is an epoch end block, verify the validator list
 	// The verification can only be done when the state is ready, it can't be done in VerifyHeader.
-	if header.Number.Uint64()%p.config.Epoch == 0 {
-		newValidators, err := p.getCurrentValidators(header.ParentHash, new(big.Int).Sub(header.Number, common.Big1))
-		if err != nil {
-			return err
-		}
-		// sort validator by address
-		sort.Sort(validatorsAscending(newValidators))
-		validatorsBytes := make([]byte, len(newValidators)*validatorBytesLength)
-		for i, validator := range newValidators {
-			copy(validatorsBytes[i*validatorBytesLength:], validator.Bytes())
-		}
-
-		extraSuffix := len(header.Extra) - extraSeal
-		if !bytes.Equal(header.Extra[extraVanity:extraSuffix], validatorsBytes) {
-			return errMismatchingEpochValidators
-		}
+	if err := p.verifyValidators(header); err != nil {
+		return err
 	}
-	// No block rewards in PoA, so the state remains as is and uncles are dropped
+
 	cx := chainContext{Chain: chain, parlia: p}
+
+	// No block rewards in PoA, so the state remains as is and uncles are dropped
 	if header.Number.Cmp(common.Big1) == 0 {
 		err := p.initContract(state, header, cx, txs, receipts, systemTxs, usedGas, false)
 		if err != nil {
@@ -712,6 +1085,12 @@ func (p *Parlia) Finalize(chain consensus.ChainHeaderReader, header *types.Heade
 	if err != nil {
 		return err
 	}
+
+	if p.chainConfig.IsPlato(header.Number) {
+		if err := p.distributeFinalityReward(chain, state, header, cx, txs, receipts, systemTxs, usedGas, false); err != nil {
+			return err
+		}
+	}
 	if len(*systemTxs) > 0 {
 		return errors.New("the length of systemTxs do not match")
 	}
@@ -758,10 +1137,18 @@ func (p *Parlia) FinalizeAndAssemble(chain consensus.ChainHeaderReader, header *
 			}
 		}
 	}
+
 	err := p.distributeIncoming(p.val, state, header, cx, &txs, &receipts, nil, &header.GasUsed, true)
 	if err != nil {
 		return nil, nil, err
 	}
+
+	if p.chainConfig.IsPlato(header.Number) {
+		if err := p.distributeFinalityReward(chain, state, header, cx, &txs, &receipts, nil, &header.GasUsed, true); err != nil {
+			return nil, nil, err
+		}
+	}
+
 	// should not happen. Once happen, stop the node is better than broadcast the block
 	if header.GasLimit < header.GasUsed {
 		return nil, nil, errors.New("gas consumption of system txs exceed the gas limit")
@@ -785,6 +1172,59 @@ func (p *Parlia) FinalizeAndAssemble(chain consensus.ChainHeaderReader, header *
 	return blk, receipts, nil
 }
 
+func (p *Parlia) IsActiveValidatorAt(chain consensus.ChainHeaderReader, header *types.Header) bool {
+	number := header.Number.Uint64()
+	snap, err := p.snapshot(chain, number-1, header.ParentHash, nil)
+	if err != nil {
+		log.Error("failed to get the snapshot from consensus", "error", err)
+		return false
+	}
+	validators := snap.Validators
+	_, ok := validators[p.val]
+	return ok
+}
+
+// VerifyVote will verify: 1. If the vote comes from valid validators 2. If the vote's sourceNumber and sourceHash are correct
+func (p *Parlia) VerifyVote(chain consensus.ChainHeaderReader, vote *types.VoteEnvelope) error {
+	targetNumber := vote.Data.TargetNumber
+	targetHash := vote.Data.TargetHash
+	header := chain.GetHeaderByHash(targetHash)
+	if header == nil {
+		log.Warn("BlockHeader at current voteBlockNumber is nil", "targetNumber", targetNumber, "targetHash", targetHash)
+		return fmt.Errorf("BlockHeader at current voteBlockNumber is nil")
+	}
+	if header.Number.Uint64() != targetNumber {
+		log.Warn("unexpected target number", "expect", header.Number.Uint64(), "real", targetNumber)
+		return fmt.Errorf("target number mismatch")
+	}
+
+	justifiedBlockNumber, justifiedBlockHash, err := p.GetJustifiedNumberAndHash(chain, header)
+	if err != nil {
+		log.Error("failed to get the highest justified number and hash", "headerNumber", header.Number, "headerHash", header.Hash())
+		return fmt.Errorf("unexpected error when getting the highest justified number and hash")
+	}
+	if vote.Data.SourceNumber != justifiedBlockNumber || vote.Data.SourceHash != justifiedBlockHash {
+		return fmt.Errorf("vote source block mismatch")
+	}
+
+	number := header.Number.Uint64()
+	snap, err := p.snapshot(chain, number-1, header.ParentHash, nil)
+	if err != nil {
+		log.Error("failed to get the snapshot from consensus", "error", err)
+		return fmt.Errorf("failed to get the snapshot from consensus")
+	}
+
+	validators := snap.Validators
+	voteAddress := vote.VoteAddress
+	for _, validator := range validators {
+		if validator.VoteAddress == voteAddress {
+			return nil
+		}
+	}
+
+	return fmt.Errorf("vote verification failed")
+}
+
 // Authorize injects a private key into the consensus engine to mint new blocks
 // with.
 func (p *Parlia) Authorize(val common.Address, signFn SignerFn, signTxFn SignerTxFn) {
@@ -869,13 +1309,6 @@ func (p *Parlia) Seal(chain consensus.ChainHeaderReader, block *types.Block, res
 
 	log.Info("Sealing block with", "number", number, "delay", delay, "headerDifficulty", header.Difficulty, "val", val.Hex())
 
-	// Sign all the things!
-	sig, err := signFn(accounts.Account{Address: val}, accounts.MimetypeParlia, ParliaRLP(header, p.chainConfig.ChainID))
-	if err != nil {
-		return err
-	}
-	copy(header.Extra[len(header.Extra)-extraSeal:], sig)
-
 	// Wait until sealing is terminated or delay timeout.
 	log.Trace("Waiting for slot to sign and propagate", "delay", common.PrettyDuration(delay))
 	go func() {
@@ -884,6 +1317,22 @@ func (p *Parlia) Seal(chain consensus.ChainHeaderReader, block *types.Block, res
 			return
 		case <-time.After(delay):
 		}
+
+		err := p.assembleVoteAttestation(chain, header)
+		if err != nil {
+			/* If the vote attestation can't be assembled successfully, the blockchain won't get
+			   fast finalized, but it can be tolerated, so just report this error here. */
+			log.Error("Assemble vote attestation failed when sealing", "err", err)
+		}
+
+		// Sign all the things!
+		sig, err := signFn(accounts.Account{Address: val}, accounts.MimetypeParlia, ParliaRLP(header, p.chainConfig.ChainID))
+		if err != nil {
+			log.Error("Sign for the block header failed when sealing", "err", err)
+			return
+		}
+		copy(header.Extra[len(header.Extra)-extraSeal:], sig)
+
 		if p.shouldWaitForCurrentBlockProcess(chain, header, snap) {
 			log.Info("Waiting for received in turn block to process")
 			select {
@@ -891,6 +1340,10 @@ func (p *Parlia) Seal(chain consensus.ChainHeaderReader, block *types.Block, res
 				log.Info("Received block process finished, abort block seal")
 				return
 			case <-time.After(time.Duration(processBackOffTime) * time.Second):
+				if chain.CurrentHeader().Number.Uint64() >= header.Number.Uint64() {
+					log.Info("Process backoff time exhausted, and current header has updated to abort this seal")
+					return
+				}
 				log.Info("Process backoff time exhausted, start to seal block")
 			}
 		}
@@ -958,11 +1411,13 @@ func (p *Parlia) SignRecently(chain consensus.ChainReader, parent *types.Block)
 	// If we're amongst the recent signers, wait for the next block
 	number := parent.NumberU64() + 1
 	for seen, recent := range snap.Recents {
-		if recent == p.val {
-			// Signer is among recents, only wait if the current block doesn't shift it out
-			if limit := uint64(len(snap.Validators)/2 + 1); number < limit || seen > number-limit {
-				return true, nil
-			}
+		if recent != p.val {
+			continue
+		}
+
+		// Signer is among recents, only wait if the current block doesn't shift it out
+		if limit := uint64(len(snap.Validators)/2 + 1); number < limit || seen > number-limit {
+			return true, nil
 		}
 	}
 	return false, nil
@@ -989,9 +1444,13 @@ func CalcDifficulty(snap *Snapshot, signer common.Address) *big.Int {
 	return new(big.Int).Set(diffNoTurn)
 }
 
-// SealHash returns the hash of a block prior to it being sealed.
-func (p *Parlia) SealHash(header *types.Header) common.Hash {
-	return SealHash(header, p.chainConfig.ChainID)
+// SealHash returns the hash of a block without vote attestation prior to it being sealed.
+// So it's not the real hash of a block, just used as unique id to distinguish task
+func (p *Parlia) SealHash(header *types.Header) (hash common.Hash) {
+	hasher := sha3.NewLegacyKeccak256()
+	encodeSigHeaderWithoutVoteAttestation(hasher, header, p.chainConfig.ChainID)
+	hasher.Sum(hash[:0])
+	return hash
 }
 
 // APIs implements consensus.Engine, returning the user facing RPC API to query snapshot.
@@ -1012,23 +1471,25 @@ func (p *Parlia) Close() error {
 // ==========================  interaction with contract/account =========
 
 // getCurrentValidators get current validators
-func (p *Parlia) getCurrentValidators(blockHash common.Hash, blockNumber *big.Int) ([]common.Address, error) {
+func (p *Parlia) getCurrentValidators(blockHash common.Hash, blockNum *big.Int) ([]common.Address, map[common.Address]*types.BLSPublicKey, error) {
 	// block
 	blockNr := rpc.BlockNumberOrHashWithHash(blockHash, false)
 
-	// method
-	method := "getValidators"
-	if p.chainConfig.IsEuler(blockNumber) {
-		method = "getMiningValidators"
+	if !p.chainConfig.IsLuban(blockNum) {
+		validators, err := p.getCurrentValidatorsBeforeLuban(blockHash, blockNum)
+		return validators, nil, err
 	}
 
+	// method
+	method := "getMiningValidators"
+
 	ctx, cancel := context.WithCancel(context.Background())
 	defer cancel() // cancel when we are finished consuming integers
 
 	data, err := p.validatorSetABI.Pack(method)
 	if err != nil {
-		log.Error("Unable to pack tx for getValidators", "error", err)
-		return nil, err
+		log.Error("Unable to pack tx for getMiningValidators", "error", err)
+		return nil, nil, err
 	}
 	// call
 	msgData := (hexutil.Bytes)(data)
@@ -1040,24 +1501,21 @@ func (p *Parlia) getCurrentValidators(blockHash common.Hash, blockNumber *big.In
 		Data: &msgData,
 	}, blockNr, nil)
 	if err != nil {
-		return nil, err
+		return nil, nil, err
 	}
 
-	var (
-		ret0 = new([]common.Address)
-	)
-	out := ret0
+	var valSet []common.Address
+	var voteAddrSet []types.BLSPublicKey
 
-	if err := p.validatorSetABI.UnpackIntoInterface(out, method, result); err != nil {
-		return nil, err
+	if err := p.validatorSetABI.UnpackIntoInterface(&[]interface{}{&valSet, &voteAddrSet}, method, result); err != nil {
+		return nil, nil, err
 	}
 
-	valz := make([]common.Address, len(*ret0))
-	// nolint: gosimple
-	for i, a := range *ret0 {
-		valz[i] = a
+	voteAddrmap := make(map[common.Address]*types.BLSPublicKey, len(valSet))
+	for i := 0; i < len(valSet); i++ {
+		voteAddrmap[valSet[i]] = &(voteAddrSet)[i]
 	}
-	return valz, nil
+	return valSet, voteAddrmap, nil
 }
 
 // slash spoiled validators
@@ -1248,6 +1706,65 @@ func (p *Parlia) applyTransaction(
 	return nil
 }
 
+// GetJustifiedNumberAndHash returns the highest justified block's number and hash on the branch including and before `header`
+func (p *Parlia) GetJustifiedNumberAndHash(chain consensus.ChainHeaderReader, header *types.Header) (uint64, common.Hash, error) {
+	if chain == nil || header == nil {
+		return 0, common.Hash{}, fmt.Errorf("illegal chain or header")
+	}
+	snap, err := p.snapshot(chain, header.Number.Uint64(), header.Hash(), nil)
+	if err != nil {
+		log.Error("Unexpected error when getting snapshot",
+			"error", err, "blockNumber", header.Number.Uint64(), "blockHash", header.Hash())
+		return 0, common.Hash{}, err
+	}
+
+	if snap.Attestation == nil {
+		if p.chainConfig.IsLuban(header.Number) {
+			log.Debug("once one attestation generated, attestation of snap would not be nil forever basically")
+		}
+		return 0, chain.GetHeaderByNumber(0).Hash(), nil
+	}
+	return snap.Attestation.TargetNumber, snap.Attestation.TargetHash, nil
+}
+
+// GetFinalizedHeader returns highest finalized block header.
+// It will find vote finalized block within NaturallyFinalizedDist blocks firstly,
+// If the vote finalized block not found, return its naturally finalized block.
+func (p *Parlia) GetFinalizedHeader(chain consensus.ChainHeaderReader, header *types.Header) *types.Header {
+	backward := uint64(types.NaturallyFinalizedDist)
+	if chain == nil || header == nil {
+		return nil
+	}
+	if !chain.Config().IsPlato(header.Number) {
+		return chain.GetHeaderByNumber(0)
+	}
+	if header.Number.Uint64() < backward {
+		backward = header.Number.Uint64()
+	}
+
+	snap, err := p.snapshot(chain, header.Number.Uint64(), header.Hash(), nil)
+	if err != nil {
+		log.Error("Unexpected error when getting snapshot",
+			"error", err, "blockNumber", header.Number.Uint64(), "blockHash", header.Hash())
+		return nil
+	}
+
+	for snap.Attestation != nil && snap.Attestation.SourceNumber >= header.Number.Uint64()-backward {
+		if snap.Attestation.TargetNumber == snap.Attestation.SourceNumber+1 {
+			return chain.GetHeaderByHash(snap.Attestation.SourceHash)
+		}
+
+		snap, err = p.snapshot(chain, snap.Attestation.SourceNumber, snap.Attestation.SourceHash, nil)
+		if err != nil {
+			log.Error("Unexpected error when getting snapshot",
+				"error", err, "blockNumber", snap.Attestation.SourceNumber, "blockHash", snap.Attestation.SourceHash)
+			return nil
+		}
+	}
+
+	return FindAncientHeader(header, backward, chain, nil)
+}
+
 // ===========================     utility function        ==========================
 // SealHash returns the hash of a block prior to it being sealed.
 func SealHash(header *types.Header, chainId *big.Int) (hash common.Hash) {
@@ -1281,6 +1798,30 @@ func encodeSigHeader(w io.Writer, header *types.Header, chainId *big.Int) {
 	}
 }
 
+func encodeSigHeaderWithoutVoteAttestation(w io.Writer, header *types.Header, chainId *big.Int) {
+	err := rlp.Encode(w, []interface{}{
+		chainId,
+		header.ParentHash,
+		header.UncleHash,
+		header.Coinbase,
+		header.Root,
+		header.TxHash,
+		header.ReceiptHash,
+		header.Bloom,
+		header.Difficulty,
+		header.Number,
+		header.GasLimit,
+		header.GasUsed,
+		header.Time,
+		header.Extra[:extraVanity], // this will panic if extra is too short, should check before calling encodeSigHeaderWithoutVoteAttestation
+		header.MixDigest,
+		header.Nonce,
+	})
+	if err != nil {
+		panic("can't encode: " + err.Error())
+	}
+}
+
 func (p *Parlia) backOffTime(snap *Snapshot, header *types.Header, val common.Address) uint64 {
 	if snap.inturn(val) {
 		return 0
diff --git a/consensus/parlia/parlia_test.go b/consensus/parlia/parlia_test.go
index fc05013e92..6442f16466 100644
--- a/consensus/parlia/parlia_test.go
+++ b/consensus/parlia/parlia_test.go
@@ -5,7 +5,16 @@ import (
 	"math/rand"
 	"testing"
 
+	"golang.org/x/crypto/sha3"
+
 	"github.com/ethereum/go-ethereum/common"
+	cmath "github.com/ethereum/go-ethereum/common/math"
+	"github.com/ethereum/go-ethereum/core/types"
+	"github.com/ethereum/go-ethereum/rlp"
+)
+
+const (
+	upperLimitOfVoteBlockNumber = 11
 )
 
 func TestImpactOfValidatorOutOfService(t *testing.T) {
@@ -144,3 +153,449 @@ func randomAddress() common.Address {
 	rand.Read(addrBytes)
 	return common.BytesToAddress(addrBytes)
 }
+
+// =========================================================================
+// =======     Simulator P2P network to verify fast finality    ============
+// =========================================================================
+
+type MockBlock struct {
+	parent *MockBlock
+
+	blockNumber uint64
+	blockHash   common.Hash
+	coinbase    *MockValidator
+	td          uint64 // Total difficulty from genesis block to current block
+	attestation uint64 // Vote attestation for parent block, zero means no attestation
+}
+
+var GenesisBlock = &MockBlock{
+	parent:      nil,
+	blockNumber: 0,
+	blockHash:   common.Hash{},
+	coinbase:    nil,
+	td:          diffInTurn.Uint64(),
+	attestation: 0,
+}
+
+func (b *MockBlock) Hash() (hash common.Hash) {
+	hasher := sha3.NewLegacyKeccak256()
+	rlp.Encode(hasher, []interface{}{
+		b.parent,
+		b.blockNumber,
+		b.coinbase,
+		b.td,
+		b.attestation,
+	})
+	hasher.Sum(hash[:0])
+	return hash
+}
+
+func (b *MockBlock) IsConflicted(a *MockBlock) bool {
+	if a.blockNumber > b.blockNumber {
+		p := a.parent
+		for ; p.blockNumber > b.blockNumber; p = p.parent {
+		}
+
+		return p.blockHash != b.blockHash
+	}
+
+	if a.blockNumber < b.blockNumber {
+		p := b.parent
+		for ; p.blockNumber > a.blockNumber; p = p.parent {
+		}
+
+		return p.blockHash != a.blockHash
+	}
+
+	return a.blockHash != b.blockHash
+}
+
+// GetJustifiedNumberAndHash returns number and hash of the highest justified block,
+// keep same func signature with consensus even if `error` will be nil definitely
+func (b *MockBlock) GetJustifiedNumberAndHash() (uint64, common.Hash, error) {
+	justifiedBlock := GenesisBlock
+	for curBlock := b; curBlock.blockNumber > 1; curBlock = curBlock.parent {
+		// justified
+		if curBlock.attestation != 0 {
+			justifiedBlock = curBlock.parent
+			break
+		}
+
+	}
+
+	return justifiedBlock.blockNumber, justifiedBlock.blockHash, nil
+}
+
+func (b *MockBlock) GetJustifiedNumber() uint64 {
+	justifiedBlockNumber, _, _ := b.GetJustifiedNumberAndHash()
+	return justifiedBlockNumber
+}
+
+// GetFinalizedBlock returns highest finalized block,
+// include current block's attestation.
+func (b *MockBlock) GetFinalizedBlock() *MockBlock {
+	if b.blockNumber < 3 {
+		return GenesisBlock
+	}
+
+	if b.attestation != 0 && b.parent.attestation != 0 {
+		return b.parent.parent
+	}
+
+	return b.parent.GetFinalizedBlock()
+}
+
+type MockValidator struct {
+	index        int
+	validatorSet int // validators number
+	head         *MockBlock
+	voteRecords  map[uint64]*types.VoteData
+}
+
+func NewMockValidator(index int, validatorSet int) *MockValidator {
+	v := &MockValidator{
+		index:        index,
+		validatorSet: validatorSet,
+		head:         GenesisBlock,
+		voteRecords:  make(map[uint64]*types.VoteData),
+	}
+	return v
+}
+
+func (v *MockValidator) SignRecently() bool {
+	parent := v.head
+	for i := 0; i < v.validatorSet*1/2; i++ {
+		if parent.blockNumber == 0 {
+			return false
+		}
+
+		if parent.coinbase == v {
+			return true
+		}
+
+		parent = parent.parent
+	}
+
+	return false
+}
+
+func (v *MockValidator) Produce(attestation uint64) (*MockBlock, error) {
+	if v.SignRecently() {
+		return nil, fmt.Errorf("v %d sign recently", v.index)
+	}
+
+	block := &MockBlock{
+		parent:      v.head,
+		blockNumber: v.head.blockNumber + 1,
+		coinbase:    v,
+		td:          v.head.td + 1,
+		attestation: attestation,
+	}
+
+	if (block.blockNumber-1)%uint64(v.validatorSet) == uint64(v.index) {
+		block.td = v.head.td + 2
+	}
+
+	block.blockHash = block.Hash()
+	return block, nil
+}
+
+func (v *MockValidator) Vote(block *MockBlock) bool {
+	// Rule 3: The block should be the latest block of canonical chain
+	if block != v.head {
+		return false
+	}
+
+	// Rule 1: No double vote
+	if _, ok := v.voteRecords[block.blockNumber]; ok {
+		return false
+	}
+
+	// Rule 2: No surround vote
+	justifiedBlockNumber, justifiedBlockHash, _ := block.GetJustifiedNumberAndHash()
+	for targetNumber := justifiedBlockNumber + 1; targetNumber < block.blockNumber; targetNumber++ {
+		if vote, ok := v.voteRecords[targetNumber]; ok {
+			if vote.SourceNumber > justifiedBlockNumber {
+				return false
+			}
+		}
+	}
+	for targetNumber := block.blockNumber; targetNumber <= block.blockNumber+upperLimitOfVoteBlockNumber; targetNumber++ {
+		if vote, ok := v.voteRecords[targetNumber]; ok {
+			if vote.SourceNumber < justifiedBlockNumber {
+				return false
+			}
+		}
+	}
+
+	v.voteRecords[block.blockNumber] = &types.VoteData{
+		SourceNumber: justifiedBlockNumber,
+		SourceHash:   justifiedBlockHash,
+		TargetNumber: block.blockNumber,
+		TargetHash:   block.blockHash,
+	}
+	return true
+}
+
+func (v *MockValidator) InsertBlock(block *MockBlock) {
+	// Reject block too old.
+	if block.blockNumber+13 < v.head.blockNumber {
+		return
+	}
+
+	// The higher justified block is the longest chain.
+	if block.GetJustifiedNumber() < v.head.GetJustifiedNumber() {
+		return
+	}
+	if block.GetJustifiedNumber() > v.head.GetJustifiedNumber() {
+		v.head = block
+		return
+	}
+
+	// The same finalized number, the larger difficulty is the longest chain.
+	if block.td > v.head.td {
+		v.head = block
+	}
+}
+
+type BlockSimulator struct {
+	blockNumber   uint64
+	coinbaseIndex int
+	voteMap       uint64
+	insertMap     uint64
+}
+
+type ChainSimulator []*BlockSimulator
+
+func (s ChainSimulator) Valid() bool {
+	var pre *BlockSimulator
+	for index, bs := range s {
+		if index == 0 {
+			if bs.blockNumber != 1 {
+				return false
+			}
+		} else {
+			if bs.blockNumber != pre.blockNumber+1 {
+				return false
+			}
+		}
+
+		pre = bs
+	}
+	return true
+}
+
+type Coordinator struct {
+	validators   []*MockValidator
+	attestations map[common.Hash]uint64
+}
+
+func NewCoordinator(validatorsNumber int) *Coordinator {
+	validators := make([]*MockValidator, validatorsNumber)
+	for i := 0; i < validatorsNumber; i++ {
+		validators[i] = NewMockValidator(i, validatorsNumber)
+	}
+
+	return &Coordinator{
+		validators:   validators,
+		attestations: make(map[common.Hash]uint64),
+	}
+}
+
+// SimulateP2P simulate a P2P network
+func (c *Coordinator) SimulateP2P(cs ChainSimulator) error {
+	for _, bs := range cs {
+		parent := c.validators[bs.coinbaseIndex].head
+		if bs.blockNumber != parent.blockNumber+1 {
+			return fmt.Errorf("can't produce discontinuous block, head block: %d, expect produce: %d", parent.blockNumber, bs.blockNumber)
+		}
+		attestation := c.attestations[parent.blockHash]
+		block, err := c.validators[bs.coinbaseIndex].Produce(attestation)
+		if err != nil {
+			return fmt.Errorf("produce block %v error %v", bs, err)
+		}
+
+		c.PropagateBlock(bs, block)
+		err = c.AggregateVotes(bs, block)
+		if err != nil {
+			return err
+		}
+	}
+
+	return nil
+}
+
+func (c *Coordinator) AggregateVotes(bs *BlockSimulator, block *MockBlock) error {
+	var attestation uint64
+	count := 0
+	for index, voteMap := 0, bs.voteMap; voteMap > 0; index, voteMap = index+1, voteMap>>1 {
+		if voteMap&0x1 == 0 {
+			continue
+		}
+
+		if !c.validators[index].Vote(block) {
+			return fmt.Errorf("validator(%d) couldn't vote for block %d produced by validator(%d)", index, block.blockNumber, block.coinbase.index)
+		}
+		attestation |= 1 << index
+		count++
+	}
+
+	if count >= cmath.CeilDiv(len(c.validators)*2, 3) {
+		c.attestations[block.blockHash] = attestation
+	}
+
+	return nil
+}
+
+func (c *Coordinator) PropagateBlock(bs *BlockSimulator, block *MockBlock) {
+	for index, insertMap := 0, bs.insertMap; insertMap > 0; index, insertMap = index+1, insertMap>>1 {
+		if insertMap&0x1 == 0 {
+			continue
+		}
+
+		c.validators[index].InsertBlock(block)
+	}
+}
+
+func (c *Coordinator) CheckChain() bool {
+	// All validators highest finalized block should not be conflicted
+	finalizedBlocks := make([]*MockBlock, len(c.validators))
+	for index, val := range c.validators {
+		finalizedBlocks[index] = val.head.GetFinalizedBlock()
+	}
+
+	for i := 0; i < len(finalizedBlocks)-1; i++ {
+		for j := i + 1; j < len(finalizedBlocks); j++ {
+			if finalizedBlocks[i].IsConflicted(finalizedBlocks[j]) {
+				return false
+			}
+		}
+	}
+
+	return true
+}
+
+type TestSimulatorParam struct {
+	validatorsNumber int
+	cs               ChainSimulator
+}
+
+var simulatorTestcases = []*TestSimulatorParam{
+	{
+		// 3 validators, all active
+		validatorsNumber: 3,
+		cs: []*BlockSimulator{
+			{1, 0, 0x7, 0x7},
+			{2, 1, 0x7, 0x7},
+			{3, 2, 0x7, 0x7},
+			{4, 0, 0x7, 0x7},
+			{5, 1, 0x7, 0x7},
+		},
+	},
+	{
+		// 5 validators, 4 active, 1 down
+		validatorsNumber: 5,
+		cs: []*BlockSimulator{
+			{1, 0, 0x1f, 0x1f},
+			{2, 1, 0x1f, 0x1f},
+			{3, 2, 0x1f, 0x1f},
+			{4, 3, 0x1f, 0x1f},
+			{5, 0, 0x1f, 0x1f},
+			{6, 1, 0x1f, 0x1f},
+			{7, 2, 0x1f, 0x1f},
+		},
+	},
+	{
+		// 21 validators, all active
+		validatorsNumber: 21,
+		cs: []*BlockSimulator{
+			{1, 0, 0x1fffff, 0x1fffff},
+			{2, 1, 0x1fffff, 0x1fffff},
+			{3, 2, 0x1fffff, 0x1fffff},
+			{4, 3, 0x1fffff, 0x1fffff},
+			{5, 4, 0x1fffff, 0x1fffff},
+			{6, 5, 0x1fffff, 0x1fffff},
+			{7, 6, 0x1fffff, 0x1fffff},
+			{8, 7, 0x1fffff, 0x1fffff},
+			{9, 8, 0x1fffff, 0x1fffff},
+			{10, 9, 0x1fffff, 0x1fffff},
+			{11, 10, 0x1fffff, 0x1fffff},
+			{12, 11, 0x1fffff, 0x1fffff},
+			{13, 12, 0x1fffff, 0x1fffff},
+			{14, 13, 0x1fffff, 0x1fffff},
+			{15, 14, 0x1fffff, 0x1fffff},
+			{16, 0, 0x1fffff, 0x1fffff},
+			{17, 1, 0x1fffff, 0x1fffff},
+			{18, 2, 0x1fffff, 0x1fffff},
+		},
+	},
+	{
+		// 21 validators, all active, the finalized fork can keep grow
+		validatorsNumber: 21,
+		cs: []*BlockSimulator{
+			{1, 1, 0x00fffe, 0x00fffe},
+			{2, 2, 0x00fffe, 0x00fffe},
+			{1, 0, 0x1f0001, 0x1fffff},
+			{2, 16, 0x1f0001, 0x1ffff1},
+			{3, 17, 0x1f0001, 0x1ffff1},
+			{4, 18, 0x1f0001, 0x1ffff1},
+			{5, 19, 0x1f0001, 0x1ffff1},
+			{3, 3, 0x00fffe, 0x00fffe}, // justify block 2 and finalize block 1
+			{6, 20, 0x1f0001, 0x1fffff},
+			{4, 4, 0x00fffe, 0x1fffff},
+			{5, 5, 0x00fffe, 0x1fffff},
+			{6, 6, 0x00fffe, 0x1fffff},
+			{7, 7, 0x1fffff, 0x1fffff},
+			{8, 8, 0x1fffff, 0x1fffff},
+		},
+	},
+	{
+		// 21 validators, all active, the finalized fork can keep grow
+		validatorsNumber: 21,
+		cs: []*BlockSimulator{
+			{1, 14, 0x00fffe, 0x00fffe},
+			{2, 15, 0x00fffe, 0x00fffe}, // The block 3 will never produce
+			{1, 0, 0x1f0001, 0x1fffff},
+			{2, 16, 0x1f0001, 0x1fffff},
+			{3, 1, 0x1f0001, 0x1fffff}, // based block produced by 15
+			{4, 2, 0x1f0001, 0x1fffff},
+			{5, 3, 0x1f0001, 0x1fffff},
+			{6, 4, 0x1f0001, 0x1fffff},
+			{7, 5, 0x1f0001, 0x1fffff},
+			{8, 6, 0x1f0001, 0x1fffff},
+			{9, 7, 0x1f0001, 0x1fffff},
+			{10, 8, 0x1f0001, 0x1fffff},
+			{11, 9, 0x1f0001, 0x1fffff},
+			{12, 10, 0x1f0001, 0x1fffff},
+			{13, 11, 0x1f0001, 0x1fffff},
+			{14, 12, 0x1f0001, 0x1fffff},
+			{15, 13, 0x1f0001, 0x1fffff},
+			{16, 14, 0x1f0001, 0x1fffff},
+			{17, 15, 0x1fffff, 0x1fffff}, // begin new round vote
+			{18, 16, 0x1fffff, 0x1fffff}, // attestation for block 17
+			{19, 17, 0x1fffff, 0x1fffff}, // attestation for block 18
+		},
+	},
+}
+
+func TestSimulateP2P(t *testing.T) {
+	for index, testcase := range simulatorTestcases {
+		c := NewCoordinator(testcase.validatorsNumber)
+		err := c.SimulateP2P(testcase.cs)
+		if err != nil {
+			t.Fatalf("[Testcase %d] simulate P2P error: %v", index, err)
+		}
+		for _, val := range c.validators {
+			t.Logf("[Testcase %d] validator(%d) head block: %d",
+				index, val.index, val.head.blockNumber)
+			t.Logf("[Testcase %d] validator(%d) highest justified block: %d",
+				index, val.index, val.head.GetJustifiedNumber())
+			t.Logf("[Testcase %d] validator(%d) highest finalized block: %d",
+				index, val.index, val.head.GetFinalizedBlock().blockNumber)
+		}
+
+		if c.CheckChain() == false {
+			t.Fatalf("[Testcase %d] chain not works as expected", index)
+		}
+	}
+}
diff --git a/consensus/parlia/snapshot.go b/consensus/parlia/snapshot.go
index 95aaf861de..e7a9dea460 100644
--- a/consensus/parlia/snapshot.go
+++ b/consensus/parlia/snapshot.go
@@ -21,16 +21,18 @@ import (
 	"encoding/hex"
 	"encoding/json"
 	"errors"
-	"math/big"
+	"fmt"
 	"sort"
 
+	lru "github.com/hashicorp/golang-lru"
+
 	"github.com/ethereum/go-ethereum/common"
 	"github.com/ethereum/go-ethereum/consensus"
 	"github.com/ethereum/go-ethereum/core/types"
 	"github.com/ethereum/go-ethereum/ethdb"
 	"github.com/ethereum/go-ethereum/internal/ethapi"
+	"github.com/ethereum/go-ethereum/log"
 	"github.com/ethereum/go-ethereum/params"
-	lru "github.com/hashicorp/golang-lru"
 )
 
 // Snapshot is the state of the validatorSet at a given point.
@@ -39,11 +41,17 @@ type Snapshot struct {
 	ethAPI   *ethapi.PublicBlockChainAPI
 	sigCache *lru.ARCCache // Cache of recent block signatures to speed up ecrecover
 
-	Number           uint64                      `json:"number"`             // Block number where the snapshot was created
-	Hash             common.Hash                 `json:"hash"`               // Block hash where the snapshot was created
-	Validators       map[common.Address]struct{} `json:"validators"`         // Set of authorized validators at this moment
-	Recents          map[uint64]common.Address   `json:"recents"`            // Set of recent validators for spam protections
-	RecentForkHashes map[uint64]string           `json:"recent_fork_hashes"` // Set of recent forkHash
+	Number           uint64                            `json:"number"`                // Block number where the snapshot was created
+	Hash             common.Hash                       `json:"hash"`                  // Block hash where the snapshot was created
+	Validators       map[common.Address]*ValidatorInfo `json:"validators"`            // Set of authorized validators at this moment
+	Recents          map[uint64]common.Address         `json:"recents"`               // Set of recent validators for spam protections
+	RecentForkHashes map[uint64]string                 `json:"recent_fork_hashes"`    // Set of recent forkHash
+	Attestation      *types.VoteData                   `json:"attestation:omitempty"` // Attestation for fast finality
+}
+
+type ValidatorInfo struct {
+	Index       int                `json:"index:omitempty"` // The index should offset by 1
+	VoteAddress types.BLSPublicKey `json:"vote_address,omitempty"`
 }
 
 // newSnapshot creates a new snapshot with the specified startup parameters. This
@@ -55,6 +63,7 @@ func newSnapshot(
 	number uint64,
 	hash common.Hash,
 	validators []common.Address,
+	voteAddrs []types.BLSPublicKey,
 	ethAPI *ethapi.PublicBlockChainAPI,
 ) *Snapshot {
 	snap := &Snapshot{
@@ -65,10 +74,25 @@ func newSnapshot(
 		Hash:             hash,
 		Recents:          make(map[uint64]common.Address),
 		RecentForkHashes: make(map[uint64]string),
-		Validators:       make(map[common.Address]struct{}),
+		Validators:       make(map[common.Address]*ValidatorInfo),
 	}
-	for _, v := range validators {
-		snap.Validators[v] = struct{}{}
+	for idx, v := range validators {
+		// The luban fork from the genesis block
+		if len(voteAddrs) == len(validators) {
+			snap.Validators[v] = &ValidatorInfo{
+				VoteAddress: voteAddrs[idx],
+			}
+		} else {
+			snap.Validators[v] = &ValidatorInfo{}
+		}
+	}
+
+	// The luban fork from the genesis block
+	if len(voteAddrs) == len(validators) {
+		validators := snap.validators()
+		for idx, v := range validators {
+			snap.Validators[v].Index = idx + 1 // offset by 1
+		}
 	}
 	return snap
 }
@@ -114,13 +138,16 @@ func (s *Snapshot) copy() *Snapshot {
 		sigCache:         s.sigCache,
 		Number:           s.Number,
 		Hash:             s.Hash,
-		Validators:       make(map[common.Address]struct{}),
+		Validators:       make(map[common.Address]*ValidatorInfo),
 		Recents:          make(map[uint64]common.Address),
 		RecentForkHashes: make(map[uint64]string),
 	}
 
 	for v := range s.Validators {
-		cpy.Validators[v] = struct{}{}
+		cpy.Validators[v] = &ValidatorInfo{
+			Index:       s.Validators[v].Index,
+			VoteAddress: s.Validators[v].VoteAddress,
+		}
 	}
 	for block, v := range s.Recents {
 		cpy.Recents[block] = v
@@ -128,6 +155,14 @@ func (s *Snapshot) copy() *Snapshot {
 	for block, id := range s.RecentForkHashes {
 		cpy.RecentForkHashes[block] = id
 	}
+	if s.Attestation != nil {
+		cpy.Attestation = &types.VoteData{
+			SourceNumber: s.Attestation.SourceNumber,
+			SourceHash:   s.Attestation.SourceHash,
+			TargetNumber: s.Attestation.TargetNumber,
+			TargetHash:   s.Attestation.TargetHash,
+		}
+	}
 	return cpy
 }
 
@@ -141,7 +176,38 @@ func (s *Snapshot) isMajorityFork(forkHash string) bool {
 	return ally > len(s.RecentForkHashes)/2
 }
 
-func (s *Snapshot) apply(headers []*types.Header, chain consensus.ChainHeaderReader, parents []*types.Header, chainId *big.Int) (*Snapshot, error) {
+func (s *Snapshot) updateAttestation(header *types.Header, chainConfig *params.ChainConfig, parliaConfig *params.ParliaConfig) {
+	if !chainConfig.IsLuban(header.Number) {
+		return
+	}
+
+	// The attestation should have been checked in verify header, update directly
+	attestation, _ := getVoteAttestationFromHeader(header, chainConfig, parliaConfig)
+	if attestation == nil {
+		return
+	}
+
+	// Headers with bad attestation are accepted before Plato upgrade,
+	// but Attestation of snapshot is only updated when the target block is direct parent of the header
+	targetNumber := attestation.Data.TargetNumber
+	targetHash := attestation.Data.TargetHash
+	if targetHash != header.ParentHash || targetNumber+1 != header.Number.Uint64() {
+		log.Warn("updateAttestation failed", "error", fmt.Errorf("invalid attestation, target mismatch, expected block: %d, hash: %s; real block: %d, hash: %s",
+			header.Number.Uint64()-1, header.ParentHash, targetNumber, targetHash))
+		updateAttestationFailedGauge.Inc(1)
+		return
+	}
+
+	// Update attestation
+	s.Attestation = &types.VoteData{
+		SourceNumber: attestation.Data.SourceNumber,
+		SourceHash:   attestation.Data.SourceHash,
+		TargetNumber: attestation.Data.TargetNumber,
+		TargetHash:   attestation.Data.TargetHash,
+	}
+}
+
+func (s *Snapshot) apply(headers []*types.Header, chain consensus.ChainHeaderReader, parents []*types.Header, chainConfig *params.ChainConfig) (*Snapshot, error) {
 	// Allow passing in no headers for cleaner code
 	if len(headers) == 0 {
 		return s, nil
@@ -174,7 +240,7 @@ func (s *Snapshot) apply(headers []*types.Header, chain consensus.ChainHeaderRea
 			delete(snap.RecentForkHashes, number-limit)
 		}
 		// Resolve the authorization key and check against signers
-		validator, err := ecrecover(header, s.sigCache, chainId)
+		validator, err := ecrecover(header, s.sigCache, chainConfig.ChainID)
 		if err != nil {
 			return nil, err
 		}
@@ -194,15 +260,20 @@ func (s *Snapshot) apply(headers []*types.Header, chain consensus.ChainHeaderRea
 				return nil, consensus.ErrUnknownAncestor
 			}
 
-			validatorBytes := checkpointHeader.Extra[extraVanity : len(checkpointHeader.Extra)-extraSeal]
 			// get validators from headers and use that for new validator set
-			newValArr, err := ParseValidators(validatorBytes)
+			newValArr, voteAddrs, err := parseValidators(checkpointHeader, chainConfig, s.config)
 			if err != nil {
 				return nil, err
 			}
-			newVals := make(map[common.Address]struct{}, len(newValArr))
-			for _, val := range newValArr {
-				newVals[val] = struct{}{}
+			newVals := make(map[common.Address]*ValidatorInfo, len(newValArr))
+			for idx, val := range newValArr {
+				if !chainConfig.IsLuban(header.Number) {
+					newVals[val] = &ValidatorInfo{}
+				} else {
+					newVals[val] = &ValidatorInfo{
+						VoteAddress: voteAddrs[idx],
+					}
+				}
 			}
 			oldLimit := len(snap.Validators)/2 + 1
 			newLimit := len(newVals)/2 + 1
@@ -219,7 +290,16 @@ func (s *Snapshot) apply(headers []*types.Header, chain consensus.ChainHeaderRea
 				}
 			}
 			snap.Validators = newVals
+			if chainConfig.IsLuban(header.Number) {
+				validators := snap.validators()
+				for idx, val := range validators {
+					snap.Validators[val].Index = idx + 1 // offset by 1
+				}
+			}
 		}
+
+		snap.updateAttestation(header, chainConfig, s.config)
+
 		snap.RecentForkHashes[number] = hex.EncodeToString(header.Extra[extraVanity-nextForkHashSize : extraVanity])
 	}
 	snap.Number += uint64(len(headers))
@@ -265,6 +345,10 @@ func (s *Snapshot) enoughDistance(validator common.Address, header *types.Header
 }
 
 func (s *Snapshot) indexOfVal(validator common.Address) int {
+	if validator, ok := s.Validators[validator]; ok && validator.Index > 0 {
+		return validator.Index - 1 // Index is offset by 1
+	}
+
 	validators := s.validators()
 	for idx, val := range validators {
 		if val == validator {
@@ -280,18 +364,29 @@ func (s *Snapshot) supposeValidator() common.Address {
 	return validators[index]
 }
 
-func ParseValidators(validatorsBytes []byte) ([]common.Address, error) {
-	if len(validatorsBytes)%validatorBytesLength != 0 {
-		return nil, errors.New("invalid validators bytes")
+func parseValidators(header *types.Header, chainConfig *params.ChainConfig, parliaConfig *params.ParliaConfig) ([]common.Address, []types.BLSPublicKey, error) {
+	validatorsBytes := getValidatorBytesFromHeader(header, chainConfig, parliaConfig)
+	if len(validatorsBytes) == 0 {
+		return nil, nil, errors.New("invalid validators bytes")
 	}
+
+	if !chainConfig.IsLuban(header.Number) {
+		n := len(validatorsBytes) / validatorBytesLengthBeforeLuban
+		result := make([]common.Address, n)
+		for i := 0; i < n; i++ {
+			result[i] = common.BytesToAddress(validatorsBytes[i*validatorBytesLengthBeforeLuban : (i+1)*validatorBytesLengthBeforeLuban])
+		}
+		return result, nil, nil
+	}
+
 	n := len(validatorsBytes) / validatorBytesLength
-	result := make([]common.Address, n)
+	cnsAddrs := make([]common.Address, n)
+	voteAddrs := make([]types.BLSPublicKey, n)
 	for i := 0; i < n; i++ {
-		address := make([]byte, validatorBytesLength)
-		copy(address, validatorsBytes[i*validatorBytesLength:(i+1)*validatorBytesLength])
-		result[i] = common.BytesToAddress(address)
+		cnsAddrs[i] = common.BytesToAddress(validatorsBytes[i*validatorBytesLength : i*validatorBytesLength+common.AddressLength])
+		copy(voteAddrs[i][:], validatorsBytes[i*validatorBytesLength+common.AddressLength:(i+1)*validatorBytesLength])
 	}
-	return result, nil
+	return cnsAddrs, voteAddrs, nil
 }
 
 func FindAncientHeader(header *types.Header, ite uint64, chain consensus.ChainHeaderReader, candidateParents []*types.Header) *types.Header {
diff --git a/core/blockchain.go b/core/blockchain.go
index b119270b99..c67ceb2097 100644
--- a/core/blockchain.go
+++ b/core/blockchain.go
@@ -55,6 +55,9 @@ var (
 	headHeaderGauge    = metrics.NewRegisteredGauge("chain/head/header", nil)
 	headFastBlockGauge = metrics.NewRegisteredGauge("chain/head/receipt", nil)
 
+	justifiedBlockGauge = metrics.NewRegisteredGauge("chain/head/justified", nil)
+	finalizedBlockGauge = metrics.NewRegisteredGauge("chain/head/finalized", nil)
+
 	accountReadTimer   = metrics.NewRegisteredTimer("chain/account/reads", nil)
 	accountHashTimer   = metrics.NewRegisteredTimer("chain/account/hashes", nil)
 	accountUpdateTimer = metrics.NewRegisteredTimer("chain/account/updates", nil)
@@ -200,16 +203,17 @@ type BlockChain struct {
 	txLookupLimit uint64
 	triesInMemory uint64
 
-	hc             *HeaderChain
-	rmLogsFeed     event.Feed
-	chainFeed      event.Feed
-	chainSideFeed  event.Feed
-	chainHeadFeed  event.Feed
-	chainBlockFeed event.Feed
-	logsFeed       event.Feed
-	blockProcFeed  event.Feed
-	scope          event.SubscriptionScope
-	genesisBlock   *types.Block
+	hc                  *HeaderChain
+	rmLogsFeed          event.Feed
+	chainFeed           event.Feed
+	chainSideFeed       event.Feed
+	chainHeadFeed       event.Feed
+	chainBlockFeed      event.Feed
+	logsFeed            event.Feed
+	blockProcFeed       event.Feed
+	finalizedHeaderFeed event.Feed
+	scope               event.SubscriptionScope
+	genesisBlock        *types.Block
 
 	// This mutex synchronizes chain write operations.
 	// Readers don't need to take it, they can just read the database.
@@ -590,6 +594,30 @@ func (bc *BlockChain) empty() bool {
 	return true
 }
 
+// GetJustifiedNumber returns the highest justified blockNumber on the branch including and before `header`.
+func (bc *BlockChain) GetJustifiedNumber(header *types.Header) uint64 {
+	if p, ok := bc.engine.(consensus.PoSA); ok {
+		justifiedBlockNumber, _, err := p.GetJustifiedNumberAndHash(bc, header)
+		if err == nil {
+			return justifiedBlockNumber
+		}
+	}
+	// return 0 when err!=nil
+	// so the input `header` will at a disadvantage during reorg
+	return 0
+}
+
+// getFinalizedNumber returns the highest finalized number before the specific block.
+func (bc *BlockChain) getFinalizedNumber(header *types.Header) uint64 {
+	if p, ok := bc.engine.(consensus.PoSA); ok {
+		if finalizedHeader := p.GetFinalizedHeader(bc, header); finalizedHeader != nil {
+			return finalizedHeader.Number.Uint64()
+		}
+	}
+
+	return 0
+}
+
 // loadLastState loads the last known chain state from the database. This method
 // assumes that the chain manager mutex is held.
 func (bc *BlockChain) loadLastState() error {
@@ -611,6 +639,8 @@ func (bc *BlockChain) loadLastState() error {
 	// Everything seems to be fine, set as the head block
 	bc.currentBlock.Store(currentBlock)
 	headBlockGauge.Update(int64(currentBlock.NumberU64()))
+	justifiedBlockGauge.Update(int64(bc.GetJustifiedNumber(currentBlock.Header())))
+	finalizedBlockGauge.Update(int64(bc.getFinalizedNumber(currentBlock.Header())))
 
 	// Restore the last known head header
 	currentHeader := currentBlock.Header()
@@ -759,6 +789,8 @@ func (bc *BlockChain) setHeadBeyondRoot(head uint64, root common.Hash, repair bo
 			// to low, so it's safe to update in-memory markers directly.
 			bc.currentBlock.Store(newHeadBlock)
 			headBlockGauge.Update(int64(newHeadBlock.NumberU64()))
+			justifiedBlockGauge.Update(int64(bc.GetJustifiedNumber(newHeadBlock.Header())))
+			finalizedBlockGauge.Update(int64(bc.getFinalizedNumber(newHeadBlock.Header())))
 		}
 		// Rewind the fast block in a simpleton way to the target head
 		if currentFastBlock := bc.CurrentFastBlock(); currentFastBlock != nil && header.Number.Uint64() < currentFastBlock.NumberU64() {
@@ -849,6 +881,8 @@ func (bc *BlockChain) SnapSyncCommitHead(hash common.Hash) error {
 	}
 	bc.currentBlock.Store(block)
 	headBlockGauge.Update(int64(block.NumberU64()))
+	justifiedBlockGauge.Update(int64(bc.GetJustifiedNumber(block.Header())))
+	finalizedBlockGauge.Update(int64(bc.getFinalizedNumber(block.Header())))
 	bc.chainmu.Unlock()
 
 	// Destroy any existing state snapshot and regenerate it in the background,
@@ -895,6 +929,8 @@ func (bc *BlockChain) ResetWithGenesisBlock(genesis *types.Block) error {
 	bc.genesisBlock = genesis
 	bc.currentBlock.Store(bc.genesisBlock)
 	headBlockGauge.Update(int64(bc.genesisBlock.NumberU64()))
+	justifiedBlockGauge.Update(int64(bc.genesisBlock.NumberU64()))
+	finalizedBlockGauge.Update(int64(bc.genesisBlock.NumberU64()))
 	bc.hc.SetGenesis(bc.genesisBlock.Header())
 	bc.hc.SetCurrentHeader(bc.genesisBlock.Header())
 	bc.currentFastBlock.Store(bc.genesisBlock)
@@ -966,6 +1002,8 @@ func (bc *BlockChain) writeHeadBlock(block *types.Block) {
 
 	bc.currentBlock.Store(block)
 	headBlockGauge.Update(int64(block.NumberU64()))
+	justifiedBlockGauge.Update(int64(bc.GetJustifiedNumber(block.Header())))
+	finalizedBlockGauge.Update(int64(bc.getFinalizedNumber(block.Header())))
 }
 
 // GetDiffLayerRLP retrieves a diff layer in RLP encoding from the cache or database by blockHash
@@ -1203,7 +1241,7 @@ func (bc *BlockChain) InsertReceiptChain(blockChain types.Blocks, receiptChain [
 
 		// Rewind may have occurred, skip in that case.
 		if bc.CurrentHeader().Number.Cmp(head.Number()) >= 0 {
-			reorg, err := bc.forker.ReorgNeeded(bc.CurrentFastBlock().Header(), head.Header())
+			reorg, err := bc.forker.ReorgNeededWithFastFinality(bc.CurrentFastBlock().Header(), head.Header())
 			if err != nil {
 				log.Warn("Reorg failed", "err", err)
 				return false
@@ -1546,14 +1584,20 @@ func (bc *BlockChain) writeBlockWithState(block *types.Block, receipts []*types.
 					}
 				}
 				// Garbage collect anything below our required write retention
+				wg2 := sync.WaitGroup{}
 				for !bc.triegc.Empty() {
 					root, number := bc.triegc.Pop()
 					if uint64(-number) > chosen {
 						bc.triegc.Push(root, number)
 						break
 					}
-					go triedb.Dereference(root.(common.Hash))
+					wg2.Add(1)
+					go func() {
+						triedb.Dereference(root.(common.Hash))
+						wg2.Done()
+					}()
 				}
+				wg2.Wait()
 			}
 		}
 		return nil
@@ -1601,7 +1645,7 @@ func (bc *BlockChain) writeBlockAndSetHead(block *types.Block, receipts []*types
 		return NonStatTy, err
 	}
 	currentBlock := bc.CurrentBlock()
-	reorg, err := bc.forker.ReorgNeeded(currentBlock.Header(), block.Header())
+	reorg, err := bc.forker.ReorgNeededWithFastFinality(currentBlock.Header(), block.Header())
 	if err != nil {
 		return NonStatTy, err
 	}
@@ -1634,6 +1678,11 @@ func (bc *BlockChain) writeBlockAndSetHead(block *types.Block, receipts []*types
 		// event here.
 		if emitHeadEvent {
 			bc.chainHeadFeed.Send(ChainHeadEvent{Block: block})
+			if posa, ok := bc.Engine().(consensus.PoSA); ok {
+				if finalizedHeader := posa.GetFinalizedHeader(bc, block.Header()); finalizedHeader != nil {
+					bc.finalizedHeaderFeed.Send(FinalizedHeaderEvent{finalizedHeader})
+				}
+			}
 		}
 	} else {
 		bc.chainSideFeed.Send(ChainSideEvent{Block: block})
@@ -1721,6 +1770,11 @@ func (bc *BlockChain) insertChain(chain types.Blocks, verifySeals, setHead bool)
 	defer func() {
 		if lastCanon != nil && bc.CurrentBlock().Hash() == lastCanon.Hash() {
 			bc.chainHeadFeed.Send(ChainHeadEvent{lastCanon})
+			if posa, ok := bc.Engine().(consensus.PoSA); ok {
+				if finalizedHeader := posa.GetFinalizedHeader(bc, lastCanon.Header()); finalizedHeader != nil {
+					bc.finalizedHeaderFeed.Send(FinalizedHeaderEvent{finalizedHeader})
+				}
+			}
 		}
 	}()
 	// Start the parallel header verifier
@@ -1750,7 +1804,7 @@ func (bc *BlockChain) insertChain(chain types.Blocks, verifySeals, setHead bool)
 			current = bc.CurrentBlock()
 		)
 		for block != nil && bc.skipBlock(err, it) {
-			reorg, err = bc.forker.ReorgNeeded(current.Header(), block.Header())
+			reorg, err = bc.forker.ReorgNeededWithFastFinality(current.Header(), block.Header())
 			if err != nil {
 				return it.index, err
 			}
@@ -2128,7 +2182,7 @@ func (bc *BlockChain) insertSideChain(block *types.Block, it *insertIterator) (i
 	//
 	// If the externTd was larger than our local TD, we now need to reimport the previous
 	// blocks to regenerate the required state
-	reorg, err := bc.forker.ReorgNeeded(current.Header(), lastBlock.Header())
+	reorg, err := bc.forker.ReorgNeededWithFastFinality(current.Header(), lastBlock.Header())
 	if err != nil {
 		return it.index, err
 	}
diff --git a/core/blockchain_reader.go b/core/blockchain_reader.go
index b28661da3e..d4b11aa3f0 100644
--- a/core/blockchain_reader.go
+++ b/core/blockchain_reader.go
@@ -42,6 +42,36 @@ func (bc *BlockChain) CurrentBlock() *types.Block {
 	return bc.currentBlock.Load().(*types.Block)
 }
 
+// CurrentFinalBlock retrieves the current finalized block of the canonical
+// chain. The block is retrieved from the blockchain's internal cache.
+func (bc *BlockChain) CurrentFinalBlock() *types.Header {
+	if p, ok := bc.engine.(consensus.PoSA); ok {
+		currentHeader := bc.CurrentHeader()
+		if currentHeader == nil {
+			return nil
+		}
+		return p.GetFinalizedHeader(bc, currentHeader)
+	}
+
+	return nil
+}
+
+// CurrentSafeBlock retrieves the current safe block of the canonical
+// chain. The block is retrieved from the blockchain's internal cache.
+func (bc *BlockChain) CurrentSafeBlock() *types.Header {
+	if p, ok := bc.engine.(consensus.PoSA); ok {
+		currentHeader := bc.CurrentHeader()
+		if currentHeader == nil {
+			return nil
+		}
+		_, justifiedBlockHash, err := p.GetJustifiedNumberAndHash(bc, currentHeader)
+		if err == nil {
+			return bc.GetHeaderByHash(justifiedBlockHash)
+		}
+	}
+	return nil
+}
+
 // CurrentFastBlock retrieves the current fast-sync head block of the canonical
 // chain. The block is retrieved from the blockchain's internal cache.
 func (bc *BlockChain) CurrentFastBlock() *types.Block {
@@ -399,3 +429,8 @@ func (bc *BlockChain) SubscribeLogsEvent(ch chan<- []*types.Log) event.Subscript
 func (bc *BlockChain) SubscribeBlockProcessingEvent(ch chan<- bool) event.Subscription {
 	return bc.scope.Track(bc.blockProcFeed.Subscribe(ch))
 }
+
+// SubscribeFinalizedHeaderEvent registers a subscription of FinalizedHeaderEvent.
+func (bc *BlockChain) SubscribeFinalizedHeaderEvent(ch chan<- FinalizedHeaderEvent) event.Subscription {
+	return bc.scope.Track(bc.finalizedHeaderFeed.Subscribe(ch))
+}
diff --git a/core/events.go b/core/events.go
index 5e730a24a7..ce8bcca744 100644
--- a/core/events.go
+++ b/core/events.go
@@ -21,7 +21,7 @@ import (
 	"github.com/ethereum/go-ethereum/core/types"
 )
 
-// NewTxsEvent is posted when a batch of transactions enter the transaction pool.
+// NewTxsEvent is posted when a batch of transactions enters the transaction pool.
 type NewTxsEvent struct{ Txs []*types.Transaction }
 
 // ReannoTxsEvent is posted when a batch of local pending transactions exceed a specified duration.
@@ -33,6 +33,12 @@ type NewMinedBlockEvent struct{ Block *types.Block }
 // RemovedLogsEvent is posted when a reorg happens
 type RemovedLogsEvent struct{ Logs []*types.Log }
 
+// NewVoteEvent is posted when a batch of votes enters the vote pool.
+type NewVoteEvent struct{ Vote *types.VoteEnvelope }
+
+// FinalizedHeaderEvent is posted when a finalized header is reached.
+type FinalizedHeaderEvent struct{ Header *types.Header }
+
 type ChainEvent struct {
 	Block *types.Block
 	Hash  common.Hash
diff --git a/core/forkchoice.go b/core/forkchoice.go
index b0dbb200ec..452c084ee7 100644
--- a/core/forkchoice.go
+++ b/core/forkchoice.go
@@ -24,6 +24,7 @@ import (
 
 	"github.com/ethereum/go-ethereum/common"
 	"github.com/ethereum/go-ethereum/common/math"
+	"github.com/ethereum/go-ethereum/consensus"
 	"github.com/ethereum/go-ethereum/core/types"
 	"github.com/ethereum/go-ethereum/log"
 	"github.com/ethereum/go-ethereum/params"
@@ -36,6 +37,12 @@ type ChainReader interface {
 	// Config retrieves the header chain's chain configuration.
 	Config() *params.ChainConfig
 
+	// Engine retrieves the blockchain's consensus engine.
+	Engine() consensus.Engine
+
+	// GetJustifiedNumber returns the highest justified blockNumber on the branch including and before `header`
+	GetJustifiedNumber(header *types.Header) uint64
+
 	// GetTd returns the total difficulty of a local block.
 	GetTd(common.Hash, uint64) *big.Int
 }
@@ -69,12 +76,12 @@ func NewForkChoice(chainReader ChainReader, preserve func(header *types.Header)
 	}
 }
 
-// ReorgNeeded returns whether the reorg should be applied
+// reorgNeeded returns whether the reorg should be applied
 // based on the given external header and local canonical chain.
 // In the td mode, the new head is chosen if the corresponding
 // total difficulty is higher. In the extern mode, the trusted
 // header is always selected as the head.
-func (f *ForkChoice) ReorgNeeded(current *types.Header, header *types.Header) (bool, error) {
+func (f *ForkChoice) reorgNeeded(current *types.Header, header *types.Header) (bool, error) {
 	var (
 		localTD  = f.chain.GetTd(current.Hash(), current.Number.Uint64())
 		externTd = f.chain.GetTd(header.Hash(), header.Number.Uint64())
@@ -106,3 +113,24 @@ func (f *ForkChoice) ReorgNeeded(current *types.Header, header *types.Header) (b
 	}
 	return reorg, nil
 }
+
+// ReorgNeededWithFastFinality compares justified block numbers firstly, backoff to compare tds when equal
+func (f *ForkChoice) ReorgNeededWithFastFinality(current *types.Header, header *types.Header) (bool, error) {
+	_, ok := f.chain.Engine().(consensus.PoSA)
+	if !ok {
+		return f.reorgNeeded(current, header)
+	}
+
+	justifiedNumber, curJustifiedNumber := uint64(0), uint64(0)
+	if f.chain.Config().IsPlato(header.Number) {
+		justifiedNumber = f.chain.GetJustifiedNumber(header)
+	}
+	if f.chain.Config().IsPlato(current.Number) {
+		curJustifiedNumber = f.chain.GetJustifiedNumber(current)
+	}
+	if justifiedNumber == curJustifiedNumber {
+		return f.reorgNeeded(current, header)
+	}
+
+	return justifiedNumber > curJustifiedNumber, nil
+}
diff --git a/core/headerchain.go b/core/headerchain.go
index c55f7c32c7..88ad7593bd 100644
--- a/core/headerchain.go
+++ b/core/headerchain.go
@@ -109,9 +109,36 @@ func NewHeaderChain(chainDb ethdb.Database, config *params.ChainConfig, engine c
 	}
 	hc.currentHeaderHash = hc.CurrentHeader().Hash()
 	headHeaderGauge.Update(hc.CurrentHeader().Number.Int64())
+	justifiedBlockGauge.Update(int64(hc.GetJustifiedNumber(hc.CurrentHeader())))
+	finalizedBlockGauge.Update(int64(hc.getFinalizedNumber(hc.CurrentHeader())))
+
 	return hc, nil
 }
 
+// GetJustifiedNumber returns the highest justified blockNumber on the branch including and before `header`.
+func (hc *HeaderChain) GetJustifiedNumber(header *types.Header) uint64 {
+	if p, ok := hc.engine.(consensus.PoSA); ok {
+		justifiedBlockNumber, _, err := p.GetJustifiedNumberAndHash(hc, header)
+		if err == nil {
+			return justifiedBlockNumber
+		}
+	}
+	// return 0 when err!=nil
+	// so the input `header` will at a disadvantage during reorg
+	return 0
+}
+
+// getFinalizedNumber returns the highest finalized number before the specific block.
+func (hc *HeaderChain) getFinalizedNumber(header *types.Header) uint64 {
+	if p, ok := hc.engine.(consensus.PoSA); ok {
+		if finalizedHeader := p.GetFinalizedHeader(hc, header); finalizedHeader != nil {
+			return finalizedHeader.Number.Uint64()
+		}
+	}
+
+	return 0
+}
+
 // GetBlockNumber retrieves the block number belonging to the given hash
 // from the cache or database
 func (hc *HeaderChain) GetBlockNumber(hash common.Hash) *uint64 {
@@ -285,7 +312,7 @@ func (hc *HeaderChain) writeHeadersAndSetHead(headers []*types.Header, forker *F
 		}
 	)
 	// Ask the fork choicer if the reorg is necessary
-	if reorg, err := forker.ReorgNeeded(hc.CurrentHeader(), lastHeader); err != nil {
+	if reorg, err := forker.ReorgNeededWithFastFinality(hc.CurrentHeader(), lastHeader); err != nil {
 		return nil, err
 	} else if !reorg {
 		if inserted != 0 {
@@ -583,6 +610,8 @@ func (hc *HeaderChain) SetCurrentHeader(head *types.Header) {
 	hc.currentHeader.Store(head)
 	hc.currentHeaderHash = head.Hash()
 	headHeaderGauge.Update(head.Number.Int64())
+	justifiedBlockGauge.Update(int64(hc.GetJustifiedNumber(head)))
+	finalizedBlockGauge.Update(int64(hc.getFinalizedNumber(head)))
 }
 
 type (
@@ -638,6 +667,8 @@ func (hc *HeaderChain) SetHead(head uint64, updateFn UpdateHeadBlocksCallback, d
 		hc.currentHeader.Store(parent)
 		hc.currentHeaderHash = parentHash
 		headHeaderGauge.Update(parent.Number.Int64())
+		justifiedBlockGauge.Update(int64(hc.GetJustifiedNumber(parent)))
+		finalizedBlockGauge.Update(int64(hc.getFinalizedNumber(parent)))
 
 		// If this is the first iteration, wipe any leftover data upwards too so
 		// we don't end up with dangling daps in the database
diff --git a/core/state/snapshot/generate.go b/core/state/snapshot/generate.go
index 9d74ca4d9b..98fa40ad2e 100644
--- a/core/state/snapshot/generate.go
+++ b/core/state/snapshot/generate.go
@@ -199,7 +199,7 @@ func journalProgress(db ethdb.KeyValueWriter, marker []byte, stats *generatorSta
 	default:
 		logstr = fmt.Sprintf("%#x:%#x", marker[:common.HashLength], marker[common.HashLength:])
 	}
-	log.Debug("Journalled generator progress", "progress", logstr)
+	log.Debug("Journaled generator progress", "progress", logstr)
 	rawdb.WriteSnapshotGenerator(db, blob)
 }
 
diff --git a/core/state/statedb.go b/core/state/statedb.go
index 617dbfa1b7..e4a5e876f5 100644
--- a/core/state/statedb.go
+++ b/core/state/statedb.go
@@ -251,6 +251,7 @@ func (s *StateDB) StopPrefetcher() {
 	s.prefetcherLock.Lock()
 	if s.prefetcher != nil {
 		s.prefetcher.close()
+		s.prefetcher = nil
 	}
 	s.prefetcherLock.Unlock()
 }
@@ -456,6 +457,14 @@ func (s *StateDB) GetCode(addr common.Address) []byte {
 	return nil
 }
 
+func (s *StateDB) GetRoot(addr common.Address) common.Hash {
+	stateObject := s.getStateObject(addr)
+	if stateObject != nil {
+		return stateObject.data.Root
+	}
+	return common.Hash{}
+}
+
 func (s *StateDB) GetCodeSize(addr common.Address) int {
 	stateObject := s.getStateObject(addr)
 	if stateObject != nil {
diff --git a/core/systemcontracts/upgrade.go b/core/systemcontracts/upgrade.go
index 3255a4605b..e323035b24 100644
--- a/core/systemcontracts/upgrade.go
+++ b/core/systemcontracts/upgrade.go
@@ -51,6 +51,8 @@ var (
 	moranUpgrade = make(map[string]*Upgrade)
 
 	planckUpgrade = make(map[string]*Upgrade)
+
+	lubanUpgrade = make(map[string]*Upgrade)
 )
 
 func init() {
@@ -551,6 +553,98 @@ func init() {
 		},
 	}
 
+	lubanUpgrade[mainNet] = &Upgrade{
+		UpgradeName: "luban",
+		Configs: []*UpgradeConfig{
+			{
+				ContractAddr: common.HexToAddress(ValidatorContract),
+				CommitUrl:    "https://github.com/bnb-chain/bsc-genesis-contract/commit/b144718e94d7a1ebb24a7103202300f08826f369",
+				Code:         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+			},
+			{
+				ContractAddr: common.HexToAddress(SlashContract),
+				CommitUrl:    "https://github.com/bnb-chain/bsc-genesis-contract/commit/b144718e94d7a1ebb24a7103202300f08826f369",
+				Code:         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+			},
+			{
+				ContractAddr: common.HexToAddress(SystemRewardContract),
+				CommitUrl:    "https://github.com/bnb-chain/bsc-genesis-contract/commit/b144718e94d7a1ebb24a7103202300f08826f369",
+				Code:         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+			},
+			{
+				ContractAddr: common.HexToAddress(RelayerHubContract),
+				CommitUrl:    "https://github.com/bnb-chain/bsc-genesis-contract/commit/b144718e94d7a1ebb24a7103202300f08826f369",
+				Code:         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+			},
+			{
+				ContractAddr: common.HexToAddress(CrossChainContract),
+				CommitUrl:    "https://github.com/bnb-chain/bsc-genesis-contract/commit/b144718e94d7a1ebb24a7103202300f08826f369",
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+			},
+		},
+	}
+
+	lubanUpgrade[chapelNet] = &Upgrade{
+		UpgradeName: "luban",
+		Configs: []*UpgradeConfig{
+			{
+				ContractAddr: common.HexToAddress(ValidatorContract),
+				CommitUrl:    "https://github.com/bnb-chain/bsc-genesis-contract/commit/b144718e94d7a1ebb24a7103202300f08826f369",
+				Code:         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+			},
+			{
+				ContractAddr: common.HexToAddress(SlashContract),
+				CommitUrl:    "https://github.com/bnb-chain/bsc-genesis-contract/commit/b144718e94d7a1ebb24a7103202300f08826f369",
+				Code:         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+			},
+			{
+				ContractAddr: common.HexToAddress(SystemRewardContract),
+				CommitUrl:    "https://github.com/bnb-chain/bsc-genesis-contract/commit/b144718e94d7a1ebb24a7103202300f08826f369",
+				Code:         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+			},
+			{
+				ContractAddr: common.HexToAddress(RelayerHubContract),
+				CommitUrl:    "https://github.com/bnb-chain/bsc-genesis-contract/commit/b144718e94d7a1ebb24a7103202300f08826f369",
+				Code:         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+			},
+			{
+				ContractAddr: common.HexToAddress(CrossChainContract),
+				CommitUrl:    "https://github.com/bnb-chain/bsc-genesis-contract/commit/b144718e94d7a1ebb24a7103202300f08826f369",
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+			},
+		},
+	}
+
+	lubanUpgrade[rialtoNet] = &Upgrade{
+		UpgradeName: "luban",
+		Configs: []*UpgradeConfig{
+			{
+				ContractAddr: common.HexToAddress(ValidatorContract),
+				CommitUrl:    "https://github.com/bnb-chain/bsc-genesis-contract/commit/b144718e94d7a1ebb24a7103202300f08826f369",
+				Code:         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+			},
+			{
+				ContractAddr: common.HexToAddress(SlashContract),
+				CommitUrl:    "https://github.com/bnb-chain/bsc-genesis-contract/commit/b144718e94d7a1ebb24a7103202300f08826f369",
+				Code:         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+			},
+			{
+				ContractAddr: common.HexToAddress(SystemRewardContract),
+				CommitUrl:    "https://github.com/bnb-chain/bsc-genesis-contract/commit/b144718e94d7a1ebb24a7103202300f08826f369",
+				Code:         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+			},
+			{
+				ContractAddr: common.HexToAddress(RelayerHubContract),
+				CommitUrl:    "https://github.com/bnb-chain/bsc-genesis-contract/commit/b144718e94d7a1ebb24a7103202300f08826f369",
+				Code:         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+			},
+			{
+				ContractAddr: common.HexToAddress(CrossChainContract),
+				CommitUrl:    "https://github.com/bnb-chain/bsc-genesis-contract/commit/b144718e94d7a1ebb24a7103202300f08826f369",
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+			},
+		},
+	}
 }
 
 func UpgradeBuildInSystemContract(config *params.ChainConfig, blockNumber *big.Int, statedb *state.StateDB) {
@@ -603,6 +697,10 @@ func UpgradeBuildInSystemContract(config *params.ChainConfig, blockNumber *big.I
 		applySystemContractUpgrade(planckUpgrade[network], blockNumber, statedb, logger)
 	}
 
+	if config.IsOnLuban(blockNumber) {
+		applySystemContractUpgrade(lubanUpgrade[network], blockNumber, statedb, logger)
+	}
+
 	/*
 		apply other upgrades
 	*/
diff --git a/core/types/vote.go b/core/types/vote.go
new file mode 100644
index 0000000000..e631b7294d
--- /dev/null
+++ b/core/types/vote.go
@@ -0,0 +1,92 @@
+package types
+
+import (
+	"sync/atomic"
+
+	"github.com/pkg/errors"
+	"github.com/prysmaticlabs/prysm/v3/crypto/bls"
+
+	"github.com/ethereum/go-ethereum/common"
+)
+
+const (
+	BLSPublicKeyLength = 48
+	BLSSignatureLength = 96
+
+	MaxAttestationExtraLength = 256
+	NaturallyFinalizedDist    = 21 // The distance to naturally finalized a block
+)
+
+type BLSPublicKey [BLSPublicKeyLength]byte
+type BLSSignature [BLSSignatureLength]byte
+type ValidatorsBitSet uint64
+
+// VoteData represents the vote range that validator voted for fast finality.
+type VoteData struct {
+	SourceNumber uint64      // The source block number should be the latest justified block number.
+	SourceHash   common.Hash // The block hash of the source block.
+	TargetNumber uint64      // The target block number which validator wants to vote for.
+	TargetHash   common.Hash // The block hash of the target block.
+}
+
+// Hash returns the hash of the vote data.
+func (d *VoteData) Hash() common.Hash { return rlpHash(d) }
+
+// VoteEnvelope represents the vote of a single validator.
+type VoteEnvelope struct {
+	VoteAddress BLSPublicKey // The BLS public key of the validator.
+	Signature   BLSSignature // Validator's signature for the vote data.
+	Data        *VoteData    // The vote data for fast finality.
+
+	// caches
+	hash atomic.Value
+}
+
+// VoteAttestation represents the votes of super majority validators.
+type VoteAttestation struct {
+	VoteAddressSet ValidatorsBitSet // The bitset marks the voted validators.
+	AggSignature   BLSSignature     // The aggregated BLS signature of the voted validators' signatures.
+	Data           *VoteData        // The vote data for fast finality.
+	Extra          []byte           // Reserved for future usage.
+}
+
+// Hash returns the vote's hash.
+func (v *VoteEnvelope) Hash() common.Hash {
+	if hash := v.hash.Load(); hash != nil {
+		return hash.(common.Hash)
+	}
+
+	h := v.calcVoteHash()
+	v.hash.Store(h)
+	return h
+}
+
+func (v *VoteEnvelope) calcVoteHash() common.Hash {
+	vote := struct {
+		VoteAddress BLSPublicKey
+		Signature   BLSSignature
+		Data        *VoteData
+	}{v.VoteAddress, v.Signature, v.Data}
+	return rlpHash(vote)
+}
+
+func (b BLSPublicKey) Bytes() []byte { return b[:] }
+
+// Verify vote using BLS.
+func (vote *VoteEnvelope) Verify() error {
+	blsPubKey, err := bls.PublicKeyFromBytes(vote.VoteAddress[:])
+	if err != nil {
+		return errors.Wrap(err, "convert public key from bytes to bls failed")
+	}
+
+	sig, err := bls.SignatureFromBytes(vote.Signature[:])
+	if err != nil {
+		return errors.Wrap(err, "invalid signature")
+	}
+
+	voteDataHash := vote.Data.Hash()
+	if !sig.Verify(blsPubKey, voteDataHash[:]) {
+		return errors.New("verify bls signature failed.")
+	}
+	return nil
+}
diff --git a/core/vm/contracts.go b/core/vm/contracts.go
index d0f3a1ba03..acdf9e7cfb 100644
--- a/core/vm/contracts.go
+++ b/core/vm/contracts.go
@@ -22,16 +22,17 @@ import (
 	"errors"
 	"math/big"
 
+	"github.com/prysmaticlabs/prysm/v3/crypto/bls"
+	"golang.org/x/crypto/ripemd160"
+
 	"github.com/ethereum/go-ethereum/common"
 	"github.com/ethereum/go-ethereum/common/math"
 	"github.com/ethereum/go-ethereum/crypto"
 	"github.com/ethereum/go-ethereum/crypto/blake2b"
 	"github.com/ethereum/go-ethereum/crypto/bls12381"
 	"github.com/ethereum/go-ethereum/crypto/bn256"
+	"github.com/ethereum/go-ethereum/log"
 	"github.com/ethereum/go-ethereum/params"
-
-	//lint:ignore SA1019 Needed for precompile
-	"golang.org/x/crypto/ripemd160"
 )
 
 // PrecompiledContract is the basic interface for native Go contracts. The implementation
@@ -140,6 +141,25 @@ var PrecompiledContractsBerlin = map[common.Address]PrecompiledContract{
 	common.BytesToAddress([]byte{9}): &blake2F{},
 }
 
+// PrecompiledContractsLuban contains the default set of pre-compiled Ethereum
+// contracts used in the Luban release.
+var PrecompiledContractsLuban = map[common.Address]PrecompiledContract{
+	common.BytesToAddress([]byte{1}): &ecrecover{},
+	common.BytesToAddress([]byte{2}): &sha256hash{},
+	common.BytesToAddress([]byte{3}): &ripemd160hash{},
+	common.BytesToAddress([]byte{4}): &dataCopy{},
+	common.BytesToAddress([]byte{5}): &bigModExp{},
+	common.BytesToAddress([]byte{6}): &bn256AddIstanbul{},
+	common.BytesToAddress([]byte{7}): &bn256ScalarMulIstanbul{},
+	common.BytesToAddress([]byte{8}): &bn256PairingIstanbul{},
+	common.BytesToAddress([]byte{9}): &blake2F{},
+
+	common.BytesToAddress([]byte{100}): &tmHeaderValidate{},
+	common.BytesToAddress([]byte{101}): &iavlMerkleProofValidatePlanck{},
+	common.BytesToAddress([]byte{102}): &blsSignatureVerify{},
+	common.BytesToAddress([]byte{103}): &cometBFTLightBlockValidate{},
+}
+
 // PrecompiledContractsBLS contains the set of pre-compiled Ethereum
 // contracts specified in EIP-2537. These are exported for testing purposes.
 var PrecompiledContractsBLS = map[common.Address]PrecompiledContract{
@@ -155,6 +175,7 @@ var PrecompiledContractsBLS = map[common.Address]PrecompiledContract{
 }
 
 var (
+	PrecompiledAddressesLuban     []common.Address
 	PrecompiledAddressesPlanck    []common.Address
 	PrecompiledAddressesMoran     []common.Address
 	PrecompiledAddressesNano      []common.Address
@@ -186,11 +207,16 @@ func init() {
 	for k := range PrecompiledContractsPlanck {
 		PrecompiledAddressesPlanck = append(PrecompiledAddressesPlanck, k)
 	}
+	for k := range PrecompiledContractsLuban {
+		PrecompiledAddressesLuban = append(PrecompiledAddressesLuban, k)
+	}
 }
 
 // ActivePrecompiles returns the precompiles enabled with the current configuration.
 func ActivePrecompiles(rules params.Rules) []common.Address {
 	switch {
+	case rules.IsLuban:
+		return PrecompiledAddressesLuban
 	case rules.IsPlanck:
 		return PrecompiledAddressesPlanck
 	case rules.IsMoran:
@@ -271,6 +297,7 @@ type sha256hash struct{}
 func (c *sha256hash) RequiredGas(input []byte) uint64 {
 	return uint64(len(input)+31)/32*params.Sha256PerWordGas + params.Sha256BaseGas
 }
+
 func (c *sha256hash) Run(input []byte) ([]byte, error) {
 	h := sha256.Sum256(input)
 	return h[:], nil
@@ -286,6 +313,7 @@ type ripemd160hash struct{}
 func (c *ripemd160hash) RequiredGas(input []byte) uint64 {
 	return uint64(len(input)+31)/32*params.Ripemd160PerWordGas + params.Ripemd160BaseGas
 }
+
 func (c *ripemd160hash) Run(input []byte) ([]byte, error) {
 	ripemd := ripemd160.New()
 	ripemd.Write(input)
@@ -302,6 +330,7 @@ type dataCopy struct{}
 func (c *dataCopy) RequiredGas(input []byte) uint64 {
 	return uint64(len(input)+31)/32*params.IdentityPerWordGas + params.IdentityBaseGas
 }
+
 func (c *dataCopy) Run(in []byte) ([]byte, error) {
 	return in, nil
 }
@@ -402,7 +431,7 @@ func (c *bigModExp) RequiredGas(input []byte) uint64 {
 		// def mult_complexity(x):
 		//    ceiling(x/8)^2
 		//
-		//where is x is max(length_of_MODULUS, length_of_BASE)
+		// where is x is max(length_of_MODULUS, length_of_BASE)
 		gas = gas.Add(gas, big7)
 		gas = gas.Div(gas, big8)
 		gas.Mul(gas, gas)
@@ -1110,3 +1139,72 @@ func (c *bls12381MapG2) Run(input []byte) ([]byte, error) {
 	// Encode the G2 point to 256 bytes
 	return g.EncodePoint(r), nil
 }
+
+// blsSignatureVerify implements bls signature verification precompile.
+type blsSignatureVerify struct{}
+
+const (
+	msgHashLength         = uint64(32)
+	signatureLength       = uint64(96)
+	singleBlsPubkeyLength = uint64(48)
+)
+
+// RequiredGas returns the gas required to execute the pre-compiled contract.
+func (c *blsSignatureVerify) RequiredGas(input []byte) uint64 {
+	msgAndSigLength := msgHashLength + signatureLength
+	inputLen := uint64(len(input))
+	if inputLen <= msgAndSigLength ||
+		(inputLen-msgAndSigLength)%singleBlsPubkeyLength != 0 {
+		return params.BlsSignatureVerifyBaseGas
+	}
+	pubKeyNumber := (inputLen - msgAndSigLength) / singleBlsPubkeyLength
+	return params.BlsSignatureVerifyBaseGas + pubKeyNumber*params.BlsSignatureVerifyPerKeyGas
+}
+
+// Run input:
+// msg      | signature | [{bls pubkey}] |
+// 32 bytes | 96 bytes  | [{48 bytes}]   |
+func (c *blsSignatureVerify) Run(input []byte) ([]byte, error) {
+	msgAndSigLength := msgHashLength + signatureLength
+	inputLen := uint64(len(input))
+	if inputLen <= msgAndSigLength ||
+		(inputLen-msgAndSigLength)%singleBlsPubkeyLength != 0 {
+		log.Debug("blsSignatureVerify input size wrong", "inputLen", inputLen)
+		return nil, ErrExecutionReverted
+	}
+
+	var msg [32]byte
+	msgBytes := getData(input, 0, msgHashLength)
+	copy(msg[:], msgBytes)
+
+	signatureBytes := getData(input, msgHashLength, signatureLength)
+	sig, err := bls.SignatureFromBytes(signatureBytes)
+	if err != nil {
+		log.Debug("blsSignatureVerify invalid signature", "err", err)
+		return nil, ErrExecutionReverted
+	}
+
+	pubKeyNumber := (inputLen - msgAndSigLength) / singleBlsPubkeyLength
+	pubKeys := make([]bls.PublicKey, pubKeyNumber)
+	for i := uint64(0); i < pubKeyNumber; i++ {
+		pubKeyBytes := getData(input, msgAndSigLength+i*singleBlsPubkeyLength, singleBlsPubkeyLength)
+		pubKey, err := bls.PublicKeyFromBytes(pubKeyBytes)
+		if err != nil {
+			log.Debug("blsSignatureVerify invalid pubKey", "err", err)
+			return nil, ErrExecutionReverted
+		}
+		pubKeys[i] = pubKey
+	}
+
+	if pubKeyNumber > 1 {
+		if !sig.FastAggregateVerify(pubKeys, msg) {
+			return big0.Bytes(), nil
+		}
+	} else {
+		if !sig.Verify(pubKeys[0], msgBytes) {
+			return big0.Bytes(), nil
+		}
+	}
+
+	return big1.Bytes(), nil
+}
diff --git a/core/vm/contracts_lightclient.go b/core/vm/contracts_lightclient.go
index 240a767453..693dffbd39 100644
--- a/core/vm/contracts_lightclient.go
+++ b/core/vm/contracts_lightclient.go
@@ -10,7 +10,8 @@ import (
 	"github.com/tendermint/tendermint/crypto/merkle"
 	cmn "github.com/tendermint/tendermint/libs/common"
 
-	"github.com/ethereum/go-ethereum/core/vm/lightclient"
+	v1 "github.com/ethereum/go-ethereum/core/vm/lightclient/v1"
+	v2 "github.com/ethereum/go-ethereum/core/vm/lightclient/v2"
 	"github.com/ethereum/go-ethereum/params"
 )
 
@@ -26,7 +27,7 @@ const (
 // input:
 // consensus state length | consensus state | tendermint header |
 // 32 bytes               |                 |                   |
-func decodeTendermintHeaderValidationInput(input []byte) (*lightclient.ConsensusState, *lightclient.Header, error) {
+func decodeTendermintHeaderValidationInput(input []byte) (*v1.ConsensusState, *v1.Header, error) {
 	csLen := binary.BigEndian.Uint64(input[consensusStateLengthBytesLength-uint64TypeLength : consensusStateLengthBytesLength])
 
 	if consensusStateLengthBytesLength+csLen < consensusStateLengthBytesLength {
@@ -37,11 +38,11 @@ func decodeTendermintHeaderValidationInput(input []byte) (*lightclient.Consensus
 		return nil, nil, fmt.Errorf("expected payload size %d, actual size: %d", consensusStateLengthBytesLength+csLen, len(input))
 	}
 
-	cs, err := lightclient.DecodeConsensusState(input[consensusStateLengthBytesLength : consensusStateLengthBytesLength+csLen])
+	cs, err := v1.DecodeConsensusState(input[consensusStateLengthBytesLength : consensusStateLengthBytesLength+csLen])
 	if err != nil {
 		return nil, nil, err
 	}
-	header, err := lightclient.DecodeHeader(input[consensusStateLengthBytesLength+csLen:])
+	header, err := v1.DecodeHeader(input[consensusStateLengthBytesLength+csLen:])
 	if err != nil {
 		return nil, nil, err
 	}
@@ -49,7 +50,8 @@ func decodeTendermintHeaderValidationInput(input []byte) (*lightclient.Consensus
 	return &cs, header, nil
 }
 
-// tmHeaderValidate implemented as a native contract.
+// tmHeaderValidate implemented as a native contract. Used to validate the light
+// client's new header for tendermint v0.31.12 and its compatible version.
 type tmHeaderValidate struct{}
 
 func (c *tmHeaderValidate) RequiredGas(input []byte) uint64 {
@@ -169,7 +171,7 @@ func (c *iavlMerkleProofValidatePlanck) RequiredGas(_ []byte) uint64 {
 }
 
 func (c *iavlMerkleProofValidatePlanck) Run(input []byte) (result []byte, err error) {
-	c.basicIavlMerkleProofValidate.proofRuntime = lightclient.Ics23CompatibleProofRuntime()
+	c.basicIavlMerkleProofValidate.proofRuntime = v1.Ics23CompatibleProofRuntime()
 	c.basicIavlMerkleProofValidate.verifiers = []merkle.ProofOpVerifier{
 		forbiddenAbsenceOpVerifier,
 		singleValueOpVerifier,
@@ -188,7 +190,7 @@ func successfulMerkleResult() []byte {
 }
 
 type basicIavlMerkleProofValidate struct {
-	keyVerifier  lightclient.KeyVerifier
+	keyVerifier  v1.KeyVerifier
 	opsVerifier  merkle.ProofOpsVerifier
 	verifiers    []merkle.ProofOpVerifier
 	proofRuntime *merkle.ProofRuntime
@@ -210,12 +212,12 @@ func (c *basicIavlMerkleProofValidate) Run(input []byte) (result []byte, err err
 		return nil, fmt.Errorf("invalid input: input size should be %d, actual the size is %d", payloadLength+precompileContractInputMetaDataLength, len(input))
 	}
 
-	kvmp, err := lightclient.DecodeKeyValueMerkleProof(input[precompileContractInputMetaDataLength:])
+	kvmp, err := v1.DecodeKeyValueMerkleProof(input[precompileContractInputMetaDataLength:])
 	if err != nil {
 		return nil, err
 	}
 	if c.proofRuntime == nil {
-		kvmp.SetProofRuntime(lightclient.DefaultProofRuntime())
+		kvmp.SetProofRuntime(v1.DefaultProofRuntime())
 	} else {
 		kvmp.SetProofRuntime(c.proofRuntime)
 	}
@@ -255,7 +257,7 @@ func multiStoreOpVerifier(op merkle.ProofOperator) error {
 	if op == nil {
 		return nil
 	}
-	if mop, ok := op.(lightclient.MultiStoreProofOp); ok {
+	if mop, ok := op.(v1.MultiStoreProofOp); ok {
 		storeNames := make(map[string]bool, len(mop.Proof.StoreInfos))
 		for _, store := range mop.Proof.StoreInfos {
 			if exist := storeNames[store.Name]; exist {
@@ -291,7 +293,7 @@ func proofOpsVerifier(poz merkle.ProofOperators) error {
 	}
 
 	// for legacy proof type
-	if _, ok := poz[1].(lightclient.MultiStoreProofOp); ok {
+	if _, ok := poz[1].(v1.MultiStoreProofOp); ok {
 		if _, ok := poz[0].(iavl.IAVLValueOp); !ok {
 			return cmn.NewError("invalid proof op")
 		}
@@ -299,17 +301,17 @@ func proofOpsVerifier(poz merkle.ProofOperators) error {
 	}
 
 	// for ics23 proof type
-	if op2, ok := poz[1].(lightclient.CommitmentOp); ok {
-		if op2.Type != lightclient.ProofOpSimpleMerkleCommitment {
+	if op2, ok := poz[1].(v1.CommitmentOp); ok {
+		if op2.Type != v1.ProofOpSimpleMerkleCommitment {
 			return cmn.NewError("invalid proof op")
 		}
 
-		op1, ok := poz[0].(lightclient.CommitmentOp)
+		op1, ok := poz[0].(v1.CommitmentOp)
 		if !ok {
 			return cmn.NewError("invalid proof op")
 		}
 
-		if op1.Type != lightclient.ProofOpIAVLCommitment {
+		if op1.Type != v1.ProofOpIAVLCommitment {
 			return cmn.NewError("invalid proof op")
 		}
 		return nil
@@ -327,3 +329,38 @@ func keyVerifier(key string) error {
 	}
 	return nil
 }
+
+// cometBFTLightBlockValidate implemented as a native contract. Used to validate the light  blocks for CometBFT v0.37.0
+// and its compatible version. Besides, in order to support the BLS cross-chain infrastructure, the SetRelayerAddress
+// and SetBlsKey methods should be implemented for the validator.
+type cometBFTLightBlockValidate struct{}
+
+func (c *cometBFTLightBlockValidate) RequiredGas(input []byte) uint64 {
+	return params.CometBFTLightBlockValidateGas
+}
+
+func (c *cometBFTLightBlockValidate) Run(input []byte) (result []byte, err error) {
+	defer func() {
+		if r := recover(); r != nil {
+			err = fmt.Errorf("internal error: %v\n", r)
+		}
+	}()
+
+	cs, block, err := v2.DecodeLightBlockValidationInput(input)
+	if err != nil {
+		return nil, err
+	}
+
+	validatorSetChanged, err := cs.ApplyLightBlock(block)
+	if err != nil {
+		return nil, err
+	}
+
+	consensusStateBytes, err := cs.EncodeConsensusState()
+	if err != nil {
+		return nil, err
+	}
+
+	result = v2.EncodeLightBlockValidationResult(validatorSetChanged, consensusStateBytes)
+	return result, nil
+}
diff --git a/core/vm/contracts_lightclient_test.go b/core/vm/contracts_lightclient_test.go
index f0dc814df3..59cec725e9 100644
--- a/core/vm/contracts_lightclient_test.go
+++ b/core/vm/contracts_lightclient_test.go
@@ -6,13 +6,12 @@ import (
 	"testing"
 
 	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
 	"github.com/tendermint/iavl"
 	"github.com/tendermint/tendermint/crypto/merkle"
 	cmn "github.com/tendermint/tendermint/libs/common"
 
-	"github.com/stretchr/testify/require"
-
-	"github.com/ethereum/go-ethereum/core/vm/lightclient"
+	v1 "github.com/ethereum/go-ethereum/core/vm/lightclient/v1"
 )
 
 const (
@@ -32,7 +31,7 @@ func TestTmHeaderValidateAndMerkleProofValidate(t *testing.T) {
 		"da8a0bf13b1abaeee7a8f9383542099a554d219b93d0ce69e3970e8000000174876e800")
 	require.NoError(t, err)
 
-	cs, err := lightclient.DecodeConsensusState(consensusStateBytes)
+	cs, err := v1.DecodeConsensusState(consensusStateBytes)
 	require.NoError(t, err)
 
 	headerBytes, err := hex.DecodeString("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@@ -53,7 +52,7 @@ func TestTmHeaderValidateAndMerkleProofValidate(t *testing.T) {
 	var tmHeaderValidateContract tmHeaderValidate
 	syncedConsensusStateBytes, err := tmHeaderValidateContract.Run(input)
 	require.NoError(t, err)
-	syncedConsensusState, err := lightclient.DecodeConsensusState(syncedConsensusStateBytes[32:])
+	syncedConsensusState, err := v1.DecodeConsensusState(syncedConsensusStateBytes[32:])
 	require.NoError(t, err)
 	require.Equal(t, testHeight+1, syncedConsensusState.Height)
 	require.Equal(t, cs.ChainID, syncedConsensusState.ChainID)
@@ -73,7 +72,7 @@ func TestTmHeaderValidateAndMerkleProofValidate(t *testing.T) {
 
 	syncedAgainConsensusStateBytes, err := tmHeaderValidateContract.Run(input)
 	require.NoError(t, err)
-	syncedAgainConsensusState, err := lightclient.DecodeConsensusState(syncedAgainConsensusStateBytes[32:])
+	syncedAgainConsensusState, err := v1.DecodeConsensusState(syncedAgainConsensusStateBytes[32:])
 	require.NoError(t, err)
 
 	newAppHash := syncedAgainConsensusState.AppHash
@@ -183,12 +182,12 @@ func TestAbsenceMerkleProofValidateMoran(t *testing.T) {
 }
 
 func TestMultiStore(t *testing.T) {
-	goodProof := lightclient.NewMultiStoreProofOp([]byte("legit"), &lightclient.MultiStoreProof{
-		StoreInfos: []lightclient.StoreInfo{
+	goodProof := v1.NewMultiStoreProofOp([]byte("legit"), &v1.MultiStoreProof{
+		StoreInfos: []v1.StoreInfo{
 			{
 				Name: "legit",
-				Core: lightclient.StoreCore{
-					CommitID: lightclient.CommitID{
+				Core: v1.StoreCore{
+					CommitID: v1.CommitID{
 						Version: 1,
 						Hash:    []byte("legithash"),
 					},
@@ -203,12 +202,12 @@ func TestMultiStore(t *testing.T) {
 	_, err = goodProof.Run([][]byte{[]byte("evilhash")})
 	assert.Error(t, err, "hash mismatch for substore")
 
-	badProof := lightclient.NewMultiStoreProofOp([]byte("legit"), &lightclient.MultiStoreProof{
-		StoreInfos: []lightclient.StoreInfo{
+	badProof := v1.NewMultiStoreProofOp([]byte("legit"), &v1.MultiStoreProof{
+		StoreInfos: []v1.StoreInfo{
 			{
 				Name: "legit",
-				Core: lightclient.StoreCore{
-					CommitID: lightclient.CommitID{
+				Core: v1.StoreCore{
+					CommitID: v1.CommitID{
 						Version: 1,
 						Hash:    []byte("evilhash"),
 					},
@@ -216,8 +215,8 @@ func TestMultiStore(t *testing.T) {
 			},
 			{
 				Name: "legit",
-				Core: lightclient.StoreCore{
-					CommitID: lightclient.CommitID{
+				Core: v1.StoreCore{
+					CommitID: v1.CommitID{
 						Version: 1,
 						Hash:    []byte("legithash"),
 					},
@@ -250,35 +249,35 @@ func TestProofOpsVerifier(t *testing.T) {
 		},
 		{
 			merkle.ProofOperators{
-				lightclient.MultiStoreProofOp{},
-				lightclient.MultiStoreProofOp{},
+				v1.MultiStoreProofOp{},
+				v1.MultiStoreProofOp{},
 			},
 			cmn.NewError("invalid proof op"),
 		},
 		{
 			merkle.ProofOperators{
 				iavl.IAVLValueOp{},
-				lightclient.MultiStoreProofOp{},
+				v1.MultiStoreProofOp{},
 			},
 			nil,
 		},
 		{
 			merkle.ProofOperators{
-				lightclient.CommitmentOp{Type: lightclient.ProofOpIAVLCommitment},
-				lightclient.CommitmentOp{Type: lightclient.ProofOpSimpleMerkleCommitment},
+				v1.CommitmentOp{Type: v1.ProofOpIAVLCommitment},
+				v1.CommitmentOp{Type: v1.ProofOpSimpleMerkleCommitment},
 			},
 			nil,
 		},
 		{
 			merkle.ProofOperators{
-				lightclient.CommitmentOp{Type: lightclient.ProofOpSimpleMerkleCommitment},
-				lightclient.CommitmentOp{Type: lightclient.ProofOpSimpleMerkleCommitment},
+				v1.CommitmentOp{Type: v1.ProofOpSimpleMerkleCommitment},
+				v1.CommitmentOp{Type: v1.ProofOpSimpleMerkleCommitment},
 			},
 			cmn.NewError("invalid proof op"),
 		},
 		{
 			merkle.ProofOperators{
-				lightclient.MultiStoreProofOp{},
+				v1.MultiStoreProofOp{},
 				iavl.IAVLValueOp{},
 			},
 			cmn.NewError("invalid proof type"),
@@ -311,3 +310,16 @@ func TestKeyVerifier(t *testing.T) {
 		assert.Equal(t, err, testCase.err)
 	}
 }
+
+func TestCometBFTLightBlockValidate(t *testing.T) {
+	inputStr := "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"
+	expectOutputStr := "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"
+
+	input, err := hex.DecodeString(inputStr)
+	require.NoError(t, err)
+
+	contract := &cometBFTLightBlockValidate{}
+	res, err := contract.Run(input)
+	require.NoError(t, err)
+	require.Equal(t, expectOutputStr, hex.EncodeToString(res))
+}
diff --git a/core/vm/contracts_test.go b/core/vm/contracts_test.go
index aa8d2f1eb3..80505d7e72 100644
--- a/core/vm/contracts_test.go
+++ b/core/vm/contracts_test.go
@@ -65,6 +65,7 @@ var allPrecompiles = map[common.Address]PrecompiledContract{
 	common.BytesToAddress([]byte{16}):   &bls12381Pairing{},
 	common.BytesToAddress([]byte{17}):   &bls12381MapG1{},
 	common.BytesToAddress([]byte{18}):   &bls12381MapG2{},
+	common.BytesToAddress([]byte{102}):  &blsSignatureVerify{},
 }
 
 // EIP-152 test vectors
@@ -179,7 +180,7 @@ func benchmarkPrecompiled(addr string, test precompiledTest, bench *testing.B) {
 		// Keep it as uint64, multiply 100 to get two digit float later
 		mgasps := (100 * 1000 * gasUsed) / elapsed
 		bench.ReportMetric(float64(mgasps)/100, "mgas/s")
-		//Check if it is correct
+		// Check if it is correct
 		if err != nil {
 			bench.Error(err)
 			return
@@ -231,6 +232,16 @@ func BenchmarkPrecompiledIdentity(bench *testing.B) {
 	benchmarkPrecompiled("04", t, bench)
 }
 
+// Benchmarks the sample inputs from the blsSignatureVerify precompile.
+func BenchmarkPrecompiledBlsSignatureVerify(bench *testing.B) {
+	t := precompiledTest{
+		Input:    "f2d8e8e5bf354429e3ce8b97c4e88f7a0bf7bc917e856de762ed6d70dd8ec2d289a04d63285e4b45309e7c180ea82565e375dd62c7b80d957aea4c9b7e16bdb28a0f910036bd3220fe3d7614fb137a8f0a68b3c564ddd214b5041d8f7a124e6e7285ac42635e75eeb9051a052fb500b1c2bc23bd4290db59fc02be11f2b80896b6e22d5b8dd31ba2e49b13cd6be19fcd01c1e23af3e5165d88d8b9deaf38baa77770fa6a358e2eebdffd1bd8a1eb7386",
+		Expected: "01",
+		Name:     "",
+	}
+	benchmarkPrecompiled("66", t, bench)
+}
+
 // Tests the sample inputs from the ModExp EIP 198.
 func TestPrecompiledModExp(t *testing.T)      { testJson("modexp", "05", t) }
 func BenchmarkPrecompiledModExp(b *testing.B) { benchJson("modexp", "05", b) }
diff --git a/core/vm/evm.go b/core/vm/evm.go
index eb483fd6de..440c47fab0 100644
--- a/core/vm/evm.go
+++ b/core/vm/evm.go
@@ -52,6 +52,8 @@ type (
 func (evm *EVM) precompile(addr common.Address) (PrecompiledContract, bool) {
 	var precompiles map[common.Address]PrecompiledContract
 	switch {
+	case evm.chainRules.IsLuban:
+		precompiles = PrecompiledContractsLuban
 	case evm.chainRules.IsPlanck:
 		precompiles = PrecompiledContractsPlanck
 	case evm.chainRules.IsMoran:
@@ -256,7 +258,7 @@ func (evm *EVM) Call(caller ContractRef, addr common.Address, input []byte, gas
 			gas = 0
 		}
 		// TODO: consider clearing up unused snapshots:
-		//} else {
+		// } else {
 		//	evm.StateDB.DiscardSnapshot(snapshot)
 	}
 	return ret, gas, err
diff --git a/core/vm/lightclient/ics23_proof.go b/core/vm/lightclient/v1/ics23_proof.go
similarity index 99%
rename from core/vm/lightclient/ics23_proof.go
rename to core/vm/lightclient/v1/ics23_proof.go
index 752a82bb68..cd4f340fbe 100644
--- a/core/vm/lightclient/ics23_proof.go
+++ b/core/vm/lightclient/v1/ics23_proof.go
@@ -1,4 +1,4 @@
-package lightclient
+package v1
 
 import (
 	"fmt"
diff --git a/core/vm/lightclient/multistoreproof.go b/core/vm/lightclient/v1/multistoreproof.go
similarity index 99%
rename from core/vm/lightclient/multistoreproof.go
rename to core/vm/lightclient/v1/multistoreproof.go
index b7f3618186..d071979655 100644
--- a/core/vm/lightclient/multistoreproof.go
+++ b/core/vm/lightclient/v1/multistoreproof.go
@@ -1,4 +1,4 @@
-package lightclient
+package v1
 
 import (
 	"bytes"
diff --git a/core/vm/lightclient/rootmultistore.go b/core/vm/lightclient/v1/rootmultistore.go
similarity index 98%
rename from core/vm/lightclient/rootmultistore.go
rename to core/vm/lightclient/v1/rootmultistore.go
index 4c26c7d8f9..88c074976d 100644
--- a/core/vm/lightclient/rootmultistore.go
+++ b/core/vm/lightclient/v1/rootmultistore.go
@@ -1,4 +1,4 @@
-package lightclient
+package v1
 
 import (
 	"fmt"
diff --git a/core/vm/lightclient/types.go b/core/vm/lightclient/v1/types.go
similarity index 99%
rename from core/vm/lightclient/types.go
rename to core/vm/lightclient/v1/types.go
index 674085b701..1c15db6df6 100644
--- a/core/vm/lightclient/types.go
+++ b/core/vm/lightclient/v1/types.go
@@ -1,4 +1,4 @@
-package lightclient
+package v1
 
 import (
 	"bytes"
diff --git a/core/vm/lightclient/utils.go b/core/vm/lightclient/v1/utils.go
similarity index 99%
rename from core/vm/lightclient/utils.go
rename to core/vm/lightclient/v1/utils.go
index 381866b146..b8663e06fe 100644
--- a/core/vm/lightclient/utils.go
+++ b/core/vm/lightclient/v1/utils.go
@@ -1,4 +1,4 @@
-package lightclient
+package v1
 
 import (
 	"fmt"
diff --git a/core/vm/lightclient/wire.go b/core/vm/lightclient/v1/wire.go
similarity index 92%
rename from core/vm/lightclient/wire.go
rename to core/vm/lightclient/v1/wire.go
index 460dfce1de..3570ae9351 100644
--- a/core/vm/lightclient/wire.go
+++ b/core/vm/lightclient/v1/wire.go
@@ -1,4 +1,4 @@
-package lightclient
+package v1
 
 import (
 	"github.com/tendermint/go-amino"
diff --git a/core/vm/lightclient/v2/lightclient.go b/core/vm/lightclient/v2/lightclient.go
new file mode 100644
index 0000000000..d5de960750
--- /dev/null
+++ b/core/vm/lightclient/v2/lightclient.go
@@ -0,0 +1,233 @@
+// Package v2 is used for tendermint v0.34.22 and its compatible version.
+package v2
+
+import (
+	"bytes"
+	"encoding/binary"
+	"fmt"
+
+	"github.com/cometbft/cometbft/crypto/ed25519"
+	"github.com/cometbft/cometbft/light"
+	tmproto "github.com/cometbft/cometbft/proto/tendermint/types"
+	"github.com/cometbft/cometbft/types"
+)
+
+const (
+	uint64TypeLength                uint64 = 8
+	consensusStateLengthBytesLength uint64 = 32
+	validateResultMetaDataLength    uint64 = 32
+
+	chainIDLength              uint64 = 32
+	heightLength               uint64 = 8
+	validatorSetHashLength     uint64 = 32
+	validatorPubkeyLength      uint64 = 32
+	validatorVotingPowerLength uint64 = 8
+	relayerAddressLength       uint64 = 20
+	relayerBlsKeyLength        uint64 = 48
+	singleValidatorBytesLength uint64 = validatorPubkeyLength + validatorVotingPowerLength + relayerAddressLength + relayerBlsKeyLength
+	maxConsensusStateLength    uint64 = chainIDLength + heightLength + validatorSetHashLength + 99*singleValidatorBytesLength // Maximum validator quantity 99
+)
+
+type ConsensusState struct {
+	ChainID              string
+	Height               uint64
+	NextValidatorSetHash []byte
+	ValidatorSet         *types.ValidatorSet
+}
+
+// output:
+// | chainID   | height   | nextValidatorSetHash | [{validator pubkey, voting power, relayer address, relayer bls pubkey}] |
+// | 32 bytes  | 8 bytes  | 32 bytes             | [{32 bytes, 8 bytes, 20 bytes, 48 bytes}]                               |
+func (cs ConsensusState) EncodeConsensusState() ([]byte, error) {
+	validatorSetLength := uint64(len(cs.ValidatorSet.Validators))
+	serializeLength := chainIDLength + heightLength + validatorSetHashLength + validatorSetLength*singleValidatorBytesLength
+	if serializeLength > maxConsensusStateLength {
+		return nil, fmt.Errorf("too many validators %d, consensus state bytes should not exceed %d", len(cs.ValidatorSet.Validators), maxConsensusStateLength)
+	}
+
+	encodingBytes := make([]byte, serializeLength)
+
+	pos := uint64(0)
+	if uint64(len(cs.ChainID)) > chainIDLength {
+		return nil, fmt.Errorf("chainID length should be no more than 32")
+	}
+	copy(encodingBytes[pos:pos+chainIDLength], cs.ChainID)
+	pos += chainIDLength
+
+	binary.BigEndian.PutUint64(encodingBytes[pos:pos+heightLength], cs.Height)
+	pos += heightLength
+
+	copy(encodingBytes[pos:pos+validatorSetHashLength], cs.NextValidatorSetHash)
+	pos += validatorSetHashLength
+
+	for index := uint64(0); index < validatorSetLength; index++ {
+		validator := cs.ValidatorSet.Validators[index]
+		pubkey, ok := validator.PubKey.(ed25519.PubKey)
+		if !ok {
+			return nil, fmt.Errorf("invalid pubkey type")
+		}
+
+		copy(encodingBytes[pos:pos+validatorPubkeyLength], pubkey[:])
+		pos += validatorPubkeyLength
+
+		binary.BigEndian.PutUint64(encodingBytes[pos:pos+validatorVotingPowerLength], uint64(validator.VotingPower))
+		pos += validatorVotingPowerLength
+
+		copy(encodingBytes[pos:pos+relayerAddressLength], validator.RelayerAddress)
+		pos += relayerAddressLength
+
+		copy(encodingBytes[pos:pos+relayerBlsKeyLength], validator.BlsKey)
+		pos += relayerBlsKeyLength
+	}
+
+	return encodingBytes, nil
+}
+
+func (cs *ConsensusState) ApplyLightBlock(block *types.LightBlock) (bool, error) {
+	if uint64(block.Height) <= cs.Height {
+		return false, fmt.Errorf("block height <= consensus height (%d < %d)", block.Height, cs.Height)
+	}
+
+	if err := block.ValidateBasic(cs.ChainID); err != nil {
+		return false, err
+	}
+
+	if cs.Height == uint64(block.Height-1) {
+		if !bytes.Equal(cs.NextValidatorSetHash, block.ValidatorsHash) {
+			return false, fmt.Errorf("validators hash mismatch, expected: %s, real: %s", cs.NextValidatorSetHash, block.ValidatorsHash)
+		}
+		err := block.ValidatorSet.VerifyCommitLight(cs.ChainID, block.Commit.BlockID, block.Height, block.Commit)
+		if err != nil {
+			return false, err
+		}
+	} else {
+		// Ensure that +`trustLevel` (default 1/3) or more of last trusted validators signed correctly.
+		err := cs.ValidatorSet.VerifyCommitLightTrusting(cs.ChainID, block.Commit, light.DefaultTrustLevel)
+		if err != nil {
+			return false, err
+		}
+
+		// Ensure that +2/3 of new validators signed correctly.
+		//
+		// NOTE: this should always be the last check because untrustedVals can be
+		// intentionally made very large to DOS the light client. not the case for
+		// VerifyAdjacent, where validator set is known in advance.
+		err = block.ValidatorSet.VerifyCommitLight(cs.ChainID, block.Commit.BlockID, block.Height, block.Commit)
+		if err != nil {
+			return false, err
+		}
+	}
+
+	// update consensus state
+	cs.Height = uint64(block.Height)
+	cs.NextValidatorSetHash = block.NextValidatorsHash
+	cs.ValidatorSet = block.ValidatorSet
+
+	return !(bytes.Equal(cs.ValidatorSet.Hash(), block.ValidatorsHash)), nil
+}
+
+// input:
+// | chainID   | height   | nextValidatorSetHash | [{validator pubkey, voting power, relayer address, relayer bls pubkey}] |
+// | 32 bytes  | 8 bytes  | 32 bytes             | [{32 bytes, 8 bytes, 20 bytes, 48 bytes}]                               |
+func DecodeConsensusState(input []byte) (ConsensusState, error) {
+	minimumLength := chainIDLength + heightLength + validatorSetHashLength
+	inputLen := uint64(len(input))
+	if inputLen <= minimumLength || (inputLen-minimumLength)%singleValidatorBytesLength != 0 {
+		return ConsensusState{}, fmt.Errorf("expected input size %d+%d*N, actual input size: %d", minimumLength, singleValidatorBytesLength, inputLen)
+	}
+
+	pos := uint64(0)
+	chainID := string(bytes.Trim(input[pos:pos+chainIDLength], "\x00"))
+	pos += chainIDLength
+
+	height := binary.BigEndian.Uint64(input[pos : pos+heightLength])
+	pos += heightLength
+
+	nextValidatorSetHash := input[pos : pos+validatorSetHashLength]
+	pos += validatorSetHashLength
+
+	validatorSetLength := (inputLen - minimumLength) / singleValidatorBytesLength
+	validatorSetBytes := input[pos:]
+	validatorSet := make([]*types.Validator, 0, validatorSetLength)
+	for index := uint64(0); index < validatorSetLength; index++ {
+		validatorBytes := validatorSetBytes[singleValidatorBytesLength*index : singleValidatorBytesLength*(index+1)]
+
+		pos = 0
+		pubkey := ed25519.PubKey(make([]byte, ed25519.PubKeySize))
+		copy(pubkey[:], validatorBytes[:validatorPubkeyLength])
+		pos += validatorPubkeyLength
+
+		votingPower := int64(binary.BigEndian.Uint64(validatorBytes[pos : pos+validatorVotingPowerLength]))
+		pos += validatorVotingPowerLength
+
+		relayerAddress := make([]byte, relayerAddressLength)
+		copy(relayerAddress[:], validatorBytes[pos:pos+relayerAddressLength])
+		pos += relayerAddressLength
+
+		relayerBlsKey := make([]byte, relayerBlsKeyLength)
+		copy(relayerBlsKey[:], validatorBytes[pos:])
+
+		validator := types.NewValidator(pubkey, votingPower)
+		validator.SetRelayerAddress(relayerAddress)
+		validator.SetBlsKey(relayerBlsKey)
+		validatorSet = append(validatorSet, validator)
+	}
+
+	consensusState := ConsensusState{
+		ChainID:              chainID,
+		Height:               height,
+		NextValidatorSetHash: nextValidatorSetHash,
+		ValidatorSet: &types.ValidatorSet{
+			Validators: validatorSet,
+		},
+	}
+
+	return consensusState, nil
+}
+
+// input:
+// consensus state length | consensus state | light block |
+// 32 bytes               |                 |             |
+func DecodeLightBlockValidationInput(input []byte) (*ConsensusState, *types.LightBlock, error) {
+	if uint64(len(input)) <= consensusStateLengthBytesLength {
+		return nil, nil, fmt.Errorf("invalid input")
+	}
+
+	csLen := binary.BigEndian.Uint64(input[consensusStateLengthBytesLength-uint64TypeLength : consensusStateLengthBytesLength])
+	if uint64(len(input)) <= consensusStateLengthBytesLength+csLen {
+		return nil, nil, fmt.Errorf("expected payload size %d, actual size: %d", consensusStateLengthBytesLength+csLen, len(input))
+	}
+
+	cs, err := DecodeConsensusState(input[consensusStateLengthBytesLength : consensusStateLengthBytesLength+csLen])
+	if err != nil {
+		return nil, nil, err
+	}
+
+	var lbpb tmproto.LightBlock
+	err = lbpb.Unmarshal(input[consensusStateLengthBytesLength+csLen:])
+	if err != nil {
+		return nil, nil, err
+	}
+	block, err := types.LightBlockFromProto(&lbpb)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	return &cs, block, nil
+}
+
+// output:
+// | validatorSetChanged | empty      | consensusStateBytesLength |  new consensusState |
+// | 1 byte              | 23 bytes   | 8 bytes                   |                     |
+func EncodeLightBlockValidationResult(validatorSetChanged bool, consensusStateBytes []byte) []byte {
+	lengthBytes := make([]byte, validateResultMetaDataLength)
+	if validatorSetChanged {
+		copy(lengthBytes[:1], []byte{0x01})
+	}
+
+	consensusStateBytesLength := uint64(len(consensusStateBytes))
+	binary.BigEndian.PutUint64(lengthBytes[validateResultMetaDataLength-uint64TypeLength:], consensusStateBytesLength)
+
+	result := append(lengthBytes, consensusStateBytes...)
+	return result
+}
diff --git a/core/vm/lightclient/v2/lightclient_test.go b/core/vm/lightclient/v2/lightclient_test.go
new file mode 100644
index 0000000000..7519ad2a19
--- /dev/null
+++ b/core/vm/lightclient/v2/lightclient_test.go
@@ -0,0 +1,174 @@
+// Package v2 is used for tendermint v0.34.22 and its compatible version.
+package v2
+
+import (
+	"bytes"
+	"encoding/hex"
+	"testing"
+
+	"github.com/stretchr/testify/require"
+
+	"github.com/cometbft/cometbft/crypto/ed25519"
+	tmproto "github.com/cometbft/cometbft/proto/tendermint/types"
+	"github.com/cometbft/cometbft/types"
+)
+
+type validatorInfo struct {
+	pubKey         string
+	votingPower    int64
+	relayerAddress string
+	relayerBlsKey  string
+}
+
+var testcases = []struct {
+	chainID              string
+	height               uint64
+	nextValidatorSetHash string
+	vals                 []validatorInfo
+	consensusStateBytes  string
+}{
+	{
+		chainID:              "chain_9000-121",
+		height:               1,
+		nextValidatorSetHash: "0CE856B1DC9CDCF3BF2478291CF02C62AEEB3679889E9866931BF1FB05A10EDA",
+		vals: []validatorInfo{
+			{
+				pubKey:         "c3d9a1082f42ca161402f8668f8e39ec9e30092affd8d3262267ac7e248a959e",
+				votingPower:    int64(10000),
+				relayerAddress: "B32d0723583040F3A16D1380D1e6AA874cD1bdF7",
+				relayerBlsKey:  "a60afe627fd78b19e07e07e19d446009dd53a18c6c8744176a5d851a762bbb51198e7e006f2a6ea7225661a61ecd832d",
+			},
+		},
+		consensusStateBytes: "636861696e5f393030302d31323100000000000000000000000000000000000000000000000000010ce856b1dc9cdcf3bf2478291cf02c62aeeb3679889e9866931bf1fb05a10edac3d9a1082f42ca161402f8668f8e39ec9e30092affd8d3262267ac7e248a959e0000000000002710b32d0723583040f3a16d1380d1e6aa874cd1bdf7a60afe627fd78b19e07e07e19d446009dd53a18c6c8744176a5d851a762bbb51198e7e006f2a6ea7225661a61ecd832d",
+	},
+	{
+		chainID:              "chain_9000-121",
+		height:               1,
+		nextValidatorSetHash: "A5F1AF4874227F1CDBE5240259A365AD86484A4255BFD65E2A0222D733FCDBC3",
+		vals: []validatorInfo{
+			{
+				pubKey:         "20cc466ee9412ddd49e0fff04cdb41bade2b7622f08b6bdacac94d4de03bdb97",
+				votingPower:    int64(10000),
+				relayerAddress: "d5e63aeee6e6fa122a6a23a6e0fca87701ba1541",
+				relayerBlsKey:  "aa2d28cbcd1ea3a63479f6fb260a3d755853e6a78cfa6252584fee97b2ec84a9d572ee4a5d3bc1558bb98a4b370fb861",
+			},
+			{
+				pubKey:         "6b0b523ee91ad18a63d63f21e0c40a83ef15963f4260574ca5159fd90a1c5270",
+				votingPower:    int64(10000),
+				relayerAddress: "6fd1ceb5a48579f322605220d4325bd9ff90d5fa",
+				relayerBlsKey:  "b31e74a881fc78681e3dfa440978d2b8be0708a1cbbca2c660866216975fdaf0e9038d9b7ccbf9731f43956dba7f2451",
+			},
+			{
+				pubKey:         "919606ae20bf5d248ee353821754bcdb456fd3950618fda3e32d3d0fb990eeda",
+				votingPower:    int64(10000),
+				relayerAddress: "97376a436bbf54e0f6949b57aa821a90a749920a",
+				relayerBlsKey:  "b32979580ea04984a2be033599c20c7a0c9a8d121b57f94ee05f5eda5b36c38f6e354c89328b92cdd1de33b64d3a0867",
+			},
+		},
+		consensusStateBytes: "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",
+	},
+}
+
+func TestEncodeConsensusState(t *testing.T) {
+	for i := 0; i < len(testcases); i++ {
+		testcase := testcases[i]
+
+		var validatorSet []*types.Validator
+
+		for j := 0; j < len(testcase.vals); j++ {
+			valInfo := testcase.vals[j]
+
+			pubKeyBytes, err := hex.DecodeString(valInfo.pubKey)
+			require.NoError(t, err)
+			relayerAddress, err := hex.DecodeString(valInfo.relayerAddress)
+			require.NoError(t, err)
+			relayerBlsKey, err := hex.DecodeString(valInfo.relayerBlsKey)
+			require.NoError(t, err)
+
+			pubkey := ed25519.PubKey(make([]byte, ed25519.PubKeySize))
+			copy(pubkey[:], pubKeyBytes)
+			validator := types.NewValidator(pubkey, valInfo.votingPower)
+			validator.SetRelayerAddress(relayerAddress)
+			validator.SetBlsKey(relayerBlsKey)
+			validatorSet = append(validatorSet, validator)
+		}
+
+		nextValidatorHash, err := hex.DecodeString(testcase.nextValidatorSetHash)
+		require.NoError(t, err)
+
+		consensusState := ConsensusState{
+			ChainID:              testcase.chainID,
+			Height:               testcase.height,
+			NextValidatorSetHash: nextValidatorHash,
+			ValidatorSet: &types.ValidatorSet{
+				Validators: validatorSet,
+			},
+		}
+
+		csBytes, err := consensusState.EncodeConsensusState()
+		require.NoError(t, err)
+
+		expectCsBytes, err := hex.DecodeString(testcase.consensusStateBytes)
+		require.NoError(t, err)
+
+		if !bytes.Equal(csBytes, expectCsBytes) {
+			t.Fatalf("Consensus state mimatch, expect: %s, real:%s\n", testcase.consensusStateBytes, hex.EncodeToString(csBytes))
+		}
+	}
+}
+
+func TestDecodeConsensusState(t *testing.T) {
+	for i := 0; i < len(testcases); i++ {
+		testcase := testcases[i]
+
+		csBytes, err := hex.DecodeString(testcase.consensusStateBytes)
+		require.NoError(t, err)
+
+		cs, err := DecodeConsensusState(csBytes)
+		require.NoError(t, err)
+
+		if cs.ChainID != testcase.chainID {
+			t.Fatalf("Chain ID mimatch, expect: %s, real:%s\n", testcase.chainID, cs.ChainID)
+		}
+
+		if cs.Height != testcase.height {
+			t.Fatalf("Height mimatch, expect: %d, real:%d\n", testcase.height, cs.Height)
+		}
+
+		nextValidatorSetHashBytes, err := hex.DecodeString(testcase.nextValidatorSetHash)
+		if err != nil {
+			t.Fatalf("Decode next validator set hash failed: %v\n", err)
+		}
+
+		if !bytes.Equal(cs.NextValidatorSetHash, nextValidatorSetHashBytes) {
+			t.Fatalf("Next validator set hash mimatch, expect: %s, real:%s\n", testcase.nextValidatorSetHash, hex.EncodeToString(cs.NextValidatorSetHash))
+		}
+	}
+}
+
+func TestConsensusStateApplyLightBlock(t *testing.T) {
+	csBytes, err := hex.DecodeString("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")
+	require.NoError(t, err)
+	t.Logf("cs length: %d\n", len(csBytes))
+	blockBytes, err := hex.DecodeString("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")
+	require.NoError(t, err)
+
+	var lbpb tmproto.LightBlock
+	err = lbpb.Unmarshal(blockBytes)
+	require.NoError(t, err)
+	block, err := types.LightBlockFromProto(&lbpb)
+	require.NoError(t, err)
+
+	cs, err := DecodeConsensusState(csBytes)
+	require.NoError(t, err)
+	validatorSetChanged, err := cs.ApplyLightBlock(block)
+	require.NoError(t, err)
+
+	if cs.Height != 2 {
+		t.Fatalf("Height is unexpected, expected: 2, actual: %d\n", cs.Height)
+	}
+
+	if validatorSetChanged {
+		t.Fatalf("Validator set has exchanaged which is not expected.\n")
+	}
+}
diff --git a/core/vote/vote_journal.go b/core/vote/vote_journal.go
new file mode 100644
index 0000000000..c11c754e36
--- /dev/null
+++ b/core/vote/vote_journal.go
@@ -0,0 +1,125 @@
+package vote
+
+import (
+	"encoding/json"
+
+	lru "github.com/hashicorp/golang-lru"
+	"github.com/tidwall/wal"
+
+	"github.com/ethereum/go-ethereum/core/types"
+	"github.com/ethereum/go-ethereum/log"
+	"github.com/ethereum/go-ethereum/metrics"
+)
+
+const (
+	maxSizeOfRecentEntry    = 512
+	maliciousVoteSlashScope = 256
+)
+
+type VoteJournal struct {
+	journalPath string // file path of disk journal for saving the vote.
+
+	walLog *wal.Log
+
+	voteDataBuffer *lru.Cache
+}
+
+var voteJournalError = metrics.NewRegisteredGauge("voteJournal/local", nil)
+
+func NewVoteJournal(filePath string) (*VoteJournal, error) {
+	walLog, err := wal.Open(filePath, &wal.Options{
+		LogFormat:        wal.JSON,
+		SegmentCacheSize: maxSizeOfRecentEntry,
+	})
+	if err != nil {
+		log.Error("Failed to open vote journal", "err", err)
+		return nil, err
+	}
+
+	voteDataBuffer, err := lru.New(maxSizeOfRecentEntry)
+	if err != nil {
+		return nil, err
+	}
+
+	firstIndex, err := walLog.FirstIndex()
+	if err != nil {
+		log.Error("Failed to get first index of votes journal", "err", err)
+	}
+
+	lastIndex, err := walLog.LastIndex()
+	if err != nil {
+		log.Error("Failed to get lastIndex of vote journal", "err", err)
+		return nil, err
+	}
+
+	voteJournal := &VoteJournal{
+		journalPath: filePath,
+		walLog:      walLog,
+	}
+
+	// Reload all voteData from journal to lru memory everytime node reboot.
+	for index := firstIndex; index <= lastIndex; index++ {
+		if voteEnvelop, err := voteJournal.ReadVote(index); err == nil && voteEnvelop != nil {
+			voteData := voteEnvelop.Data
+			voteDataBuffer.Add(voteData.TargetNumber, voteData)
+		}
+	}
+	voteJournal.voteDataBuffer = voteDataBuffer
+
+	return voteJournal, nil
+}
+
+func (journal *VoteJournal) WriteVote(voteMessage *types.VoteEnvelope) error {
+	walLog := journal.walLog
+
+	vote, err := json.Marshal(voteMessage)
+	if err != nil {
+		log.Error("Failed to unmarshal vote", "err", err)
+		return err
+	}
+
+	lastIndex, err := walLog.LastIndex()
+	if err != nil {
+		log.Error("Failed to get lastIndex of vote journal", "err", err)
+		return err
+	}
+
+	lastIndex += 1
+	if err = walLog.Write(lastIndex, vote); err != nil {
+		log.Error("Failed to write vote journal", "err", err)
+		return err
+	}
+
+	firstIndex, err := walLog.FirstIndex()
+	if err != nil {
+		log.Error("Failed to get first index of votes journal", "err", err)
+	}
+
+	if lastIndex-firstIndex+1 > maxSizeOfRecentEntry {
+		if err := walLog.TruncateFront(lastIndex - maxSizeOfRecentEntry + 1); err != nil {
+			log.Error("Failed to truncate votes journal", "err", err)
+		}
+	}
+
+	journal.voteDataBuffer.Add(voteMessage.Data.TargetNumber, voteMessage.Data)
+	return nil
+}
+
+func (journal *VoteJournal) ReadVote(index uint64) (*types.VoteEnvelope, error) {
+	voteMessage, err := journal.walLog.Read(index)
+	if err != nil && err != wal.ErrNotFound {
+		log.Error("Failed to read votes journal", "err", err)
+		return nil, err
+	}
+
+	var vote *types.VoteEnvelope
+	if voteMessage != nil {
+		vote = &types.VoteEnvelope{}
+		if err := json.Unmarshal(voteMessage, vote); err != nil {
+			log.Error("Failed to read vote from voteJournal", "err", err)
+			return nil, err
+		}
+	}
+
+	return vote, nil
+}
diff --git a/core/vote/vote_manager.go b/core/vote/vote_manager.go
new file mode 100644
index 0000000000..fe99418e90
--- /dev/null
+++ b/core/vote/vote_manager.go
@@ -0,0 +1,224 @@
+package vote
+
+import (
+	"fmt"
+
+	"github.com/ethereum/go-ethereum/common"
+	"github.com/ethereum/go-ethereum/consensus"
+	"github.com/ethereum/go-ethereum/core"
+	"github.com/ethereum/go-ethereum/core/types"
+	"github.com/ethereum/go-ethereum/eth/downloader"
+	"github.com/ethereum/go-ethereum/event"
+	"github.com/ethereum/go-ethereum/log"
+	"github.com/ethereum/go-ethereum/metrics"
+	"github.com/ethereum/go-ethereum/params"
+)
+
+// VoteManager will handle the vote produced by self.
+type VoteManager struct {
+	mux *event.TypeMux
+
+	chain       *core.BlockChain
+	chainconfig *params.ChainConfig
+
+	chainHeadCh  chan core.ChainHeadEvent
+	chainHeadSub event.Subscription
+
+	pool    *VotePool
+	signer  *VoteSigner
+	journal *VoteJournal
+
+	engine consensus.PoSA
+}
+
+func NewVoteManager(mux *event.TypeMux, chainconfig *params.ChainConfig, chain *core.BlockChain, pool *VotePool, journalPath, blsPasswordPath, blsWalletPath string, engine consensus.PoSA) (*VoteManager, error) {
+	voteManager := &VoteManager{
+		mux: mux,
+
+		chain:       chain,
+		chainconfig: chainconfig,
+		chainHeadCh: make(chan core.ChainHeadEvent, chainHeadChanSize),
+
+		pool:   pool,
+		engine: engine,
+	}
+
+	// Create voteSigner.
+	voteSigner, err := NewVoteSigner(blsPasswordPath, blsWalletPath)
+	if err != nil {
+		return nil, err
+	}
+	log.Info("Create voteSigner successfully")
+	voteManager.signer = voteSigner
+
+	// Create voteJournal
+	voteJournal, err := NewVoteJournal(journalPath)
+	if err != nil {
+		return nil, err
+	}
+	log.Info("Create voteJournal successfully")
+	voteManager.journal = voteJournal
+
+	// Subscribe to chain head event.
+	voteManager.chainHeadSub = voteManager.chain.SubscribeChainHeadEvent(voteManager.chainHeadCh)
+
+	go voteManager.loop()
+
+	return voteManager, nil
+}
+
+func (voteManager *VoteManager) loop() {
+	log.Debug("vote manager routine loop started")
+	events := voteManager.mux.Subscribe(downloader.StartEvent{}, downloader.DoneEvent{}, downloader.FailedEvent{})
+	defer func() {
+		log.Debug("vote manager loop defer func occur")
+		if !events.Closed() {
+			log.Debug("event not closed, unsubscribed by vote manager loop")
+			events.Unsubscribe()
+		}
+	}()
+
+	dlEventCh := events.Chan()
+
+	startVote := true
+	for {
+		select {
+		case ev := <-dlEventCh:
+			if ev == nil {
+				log.Debug("dlEvent is nil, continue")
+				continue
+			}
+			switch ev.Data.(type) {
+			case downloader.StartEvent:
+				log.Debug("downloader is in startEvent mode, will not startVote")
+				startVote = false
+			case downloader.FailedEvent:
+				log.Debug("downloader is in FailedEvent mode, set startVote flag as true")
+				startVote = true
+			case downloader.DoneEvent:
+				log.Debug("downloader is in DoneEvent mode, set the startVote flag to true")
+				startVote = true
+			}
+		case cHead := <-voteManager.chainHeadCh:
+			if !startVote {
+				log.Debug("startVote flag is false, continue")
+				continue
+			}
+
+			if cHead.Block == nil {
+				log.Debug("cHead.Block is nil, continue")
+				continue
+			}
+
+			curHead := cHead.Block.Header()
+			// Check if cur validator is within the validatorSet at curHead
+			if !voteManager.engine.IsActiveValidatorAt(voteManager.chain, curHead) {
+				log.Debug("cur validator is not within the validatorSet at curHead")
+				continue
+			}
+
+			// Vote for curBlockHeader block.
+			vote := &types.VoteData{
+				TargetNumber: curHead.Number.Uint64(),
+				TargetHash:   curHead.Hash(),
+			}
+			voteMessage := &types.VoteEnvelope{
+				Data: vote,
+			}
+
+			// Put Vote into journal and VotesPool if we are active validator and allow to sign it.
+			if ok, sourceNumber, sourceHash := voteManager.UnderRules(curHead); ok {
+				log.Debug("curHead is underRules for voting")
+				if sourceHash == (common.Hash{}) {
+					log.Debug("sourceHash is empty")
+					continue
+				}
+
+				voteMessage.Data.SourceNumber = sourceNumber
+				voteMessage.Data.SourceHash = sourceHash
+
+				if err := voteManager.signer.SignVote(voteMessage); err != nil {
+					log.Error("Failed to sign vote", "err", err)
+					votesSigningErrorMetric(vote.TargetNumber, vote.TargetHash).Inc(1)
+					continue
+				}
+				if err := voteManager.journal.WriteVote(voteMessage); err != nil {
+					log.Error("Failed to write vote into journal", "err", err)
+					voteJournalError.Inc(1)
+					continue
+				}
+
+				log.Debug("vote manager produced vote", "votedBlockNumber", voteMessage.Data.TargetNumber, "votedBlockHash", voteMessage.Data.TargetHash, "voteMessageHash", voteMessage.Hash())
+				voteManager.pool.PutVote(voteMessage)
+				votesManagerMetric(vote.TargetNumber, vote.TargetHash).Inc(1)
+			}
+		case <-voteManager.chainHeadSub.Err():
+			log.Debug("voteManager subscribed chainHead failed")
+			return
+		}
+	}
+}
+
+// UnderRules checks if the produced header under the following rules:
+// A validator must not publish two distinct votes for the same height. (Rule 1)
+// A validator must not vote within the span of its other votes . (Rule 2)
+// Validators always vote for their canonical chain’s latest block. (Rule 3)
+func (voteManager *VoteManager) UnderRules(header *types.Header) (bool, uint64, common.Hash) {
+	sourceNumber, sourceHash, err := voteManager.engine.GetJustifiedNumberAndHash(voteManager.chain, header)
+	if err != nil {
+		log.Error("failed to get the highest justified number and hash at cur header", "curHeader's BlockNumber", header.Number, "curHeader's BlockHash", header.Hash())
+		return false, 0, common.Hash{}
+	}
+
+	targetNumber := header.Number.Uint64()
+
+	voteDataBuffer := voteManager.journal.voteDataBuffer
+	//Rule 1:  A validator must not publish two distinct votes for the same height.
+	if voteDataBuffer.Contains(targetNumber) {
+		log.Debug("err: A validator must not publish two distinct votes for the same height.")
+		return false, 0, common.Hash{}
+	}
+
+	//Rule 2: A validator must not vote within the span of its other votes.
+	blockNumber := sourceNumber + 1
+	if blockNumber+maliciousVoteSlashScope < targetNumber {
+		blockNumber = targetNumber - maliciousVoteSlashScope
+	}
+	for ; blockNumber < targetNumber; blockNumber++ {
+		if voteDataBuffer.Contains(blockNumber) {
+			voteData, ok := voteDataBuffer.Get(blockNumber)
+			if !ok {
+				log.Error("Failed to get voteData info from LRU cache.")
+				continue
+			}
+			if voteData.(*types.VoteData).SourceNumber > sourceNumber {
+				log.Debug(fmt.Sprintf("error: cur vote %d-->%d is within the span of other votes %d-->%d",
+					sourceNumber, targetNumber, voteData.(*types.VoteData).SourceNumber, voteData.(*types.VoteData).TargetNumber))
+				return false, 0, common.Hash{}
+			}
+		}
+	}
+	for blockNumber := targetNumber + 1; blockNumber <= targetNumber+upperLimitOfVoteBlockNumber; blockNumber++ {
+		if voteDataBuffer.Contains(blockNumber) {
+			voteData, ok := voteDataBuffer.Get(blockNumber)
+			if !ok {
+				log.Error("Failed to get voteData info from LRU cache.")
+				continue
+			}
+			if voteData.(*types.VoteData).SourceNumber < sourceNumber {
+				log.Debug("error: other votes are within span of cur vote")
+				return false, 0, common.Hash{}
+			}
+		}
+	}
+
+	// Rule 3: Validators always vote for their canonical chain’s latest block.
+	// Since the header subscribed to is the canonical chain, so this rule is satisified by default.
+	log.Debug("All three rules check passed")
+	return true, sourceNumber, sourceHash
+}
+
+// Metrics to monitor if voteManager worked in the expetected logic.
+func votesManagerMetric(blockNumber uint64, blockHash common.Hash) metrics.Gauge {
+	return metrics.GetOrRegisterGauge(fmt.Sprintf("voteManager/blockNumber/%d/blockHash/%s", blockNumber, blockHash), nil)
+}
diff --git a/core/vote/vote_pool.go b/core/vote/vote_pool.go
new file mode 100644
index 0000000000..664f12f76b
--- /dev/null
+++ b/core/vote/vote_pool.go
@@ -0,0 +1,397 @@
+package vote
+
+import (
+	"container/heap"
+	"sync"
+
+	mapset "github.com/deckarep/golang-set"
+
+	"github.com/ethereum/go-ethereum/common"
+	"github.com/ethereum/go-ethereum/consensus"
+	"github.com/ethereum/go-ethereum/core"
+	"github.com/ethereum/go-ethereum/core/types"
+	"github.com/ethereum/go-ethereum/event"
+	"github.com/ethereum/go-ethereum/log"
+	"github.com/ethereum/go-ethereum/metrics"
+	"github.com/ethereum/go-ethereum/params"
+)
+
+const (
+	maxCurVoteAmountPerBlock    = 21
+	maxFutureVoteAmountPerBlock = 50
+
+	voteBufferForPut = 256
+	// votes in the range (currentBlockNum-256,currentBlockNum+11] will be stored
+	lowerLimitOfVoteBlockNumber = 256
+	upperLimitOfVoteBlockNumber = 11 // refer to fetcher.maxUncleDist
+
+	chainHeadChanSize = 10 // chainHeadChanSize is the size of channel listening to ChainHeadEvent.
+)
+
+var (
+	localCurVotesGauge    = metrics.NewRegisteredGauge("curVotes/local", nil)
+	localFutureVotesGauge = metrics.NewRegisteredGauge("futureVotes/local", nil)
+
+	localReceivedVotesGauge = metrics.NewRegisteredGauge("receivedVotes/local", nil)
+
+	localCurVotesPqGauge    = metrics.NewRegisteredGauge("curVotesPq/local", nil)
+	localFutureVotesPqGauge = metrics.NewRegisteredGauge("futureVotesPq/local", nil)
+)
+
+type VoteBox struct {
+	blockNumber  uint64
+	voteMessages []*types.VoteEnvelope
+}
+
+type VotePool struct {
+	chain       *core.BlockChain
+	chainconfig *params.ChainConfig
+	mu          sync.RWMutex
+
+	votesFeed event.Feed
+	scope     event.SubscriptionScope
+
+	receivedVotes mapset.Set
+
+	curVotes    map[common.Hash]*VoteBox
+	futureVotes map[common.Hash]*VoteBox
+
+	curVotesPq    *votesPriorityQueue
+	futureVotesPq *votesPriorityQueue
+
+	chainHeadCh  chan core.ChainHeadEvent
+	chainHeadSub event.Subscription
+
+	votesCh chan *types.VoteEnvelope
+
+	engine consensus.PoSA
+}
+
+type votesPriorityQueue []*types.VoteData
+
+func NewVotePool(chainconfig *params.ChainConfig, chain *core.BlockChain, engine consensus.PoSA) *VotePool {
+	votePool := &VotePool{
+		chain:         chain,
+		chainconfig:   chainconfig,
+		receivedVotes: mapset.NewSet(),
+		curVotes:      make(map[common.Hash]*VoteBox),
+		futureVotes:   make(map[common.Hash]*VoteBox),
+		curVotesPq:    &votesPriorityQueue{},
+		futureVotesPq: &votesPriorityQueue{},
+		chainHeadCh:   make(chan core.ChainHeadEvent, chainHeadChanSize),
+		votesCh:       make(chan *types.VoteEnvelope, voteBufferForPut),
+		engine:        engine,
+	}
+
+	// Subscribe events from blockchain and start the main event loop.
+	votePool.chainHeadSub = votePool.chain.SubscribeChainHeadEvent(votePool.chainHeadCh)
+
+	go votePool.loop()
+	return votePool
+}
+
+// loop is the vote pool's main even loop, waiting for and reacting to outside blockchain events and votes channel event.
+func (pool *VotePool) loop() {
+	for {
+		select {
+		// Handle ChainHeadEvent.
+		case ev := <-pool.chainHeadCh:
+			if ev.Block != nil {
+				latestBlockNumber := ev.Block.NumberU64()
+				pool.prune(latestBlockNumber)
+				pool.transferVotesFromFutureToCur(ev.Block.Header())
+			}
+		case <-pool.chainHeadSub.Err():
+			return
+
+		// Handle votes channel and put the vote into vote pool.
+		case vote := <-pool.votesCh:
+			pool.putIntoVotePool(vote)
+		}
+	}
+}
+
+func (pool *VotePool) PutVote(vote *types.VoteEnvelope) {
+	pool.votesCh <- vote
+}
+
+func (pool *VotePool) putIntoVotePool(vote *types.VoteEnvelope) bool {
+	targetNumber := vote.Data.TargetNumber
+	targetHash := vote.Data.TargetHash
+	header := pool.chain.CurrentBlock().Header()
+	headNumber := header.Number.Uint64()
+
+	// Make sure in the range (currentHeight-lowerLimitOfVoteBlockNumber, currentHeight+upperLimitOfVoteBlockNumber].
+	if targetNumber+lowerLimitOfVoteBlockNumber-1 < headNumber || targetNumber > headNumber+upperLimitOfVoteBlockNumber {
+		log.Debug("BlockNumber of vote is outside the range of header-256~header+11, will be discarded")
+		return false
+	}
+
+	voteData := &types.VoteData{
+		TargetNumber: targetNumber,
+		TargetHash:   targetHash,
+	}
+
+	var votes map[common.Hash]*VoteBox
+	var votesPq *votesPriorityQueue
+	isFutureVote := false
+
+	voteBlock := pool.chain.GetHeaderByHash(targetHash)
+	if voteBlock == nil {
+		votes = pool.futureVotes
+		votesPq = pool.futureVotesPq
+		isFutureVote = true
+	} else {
+		votes = pool.curVotes
+		votesPq = pool.curVotesPq
+	}
+
+	voteHash := vote.Hash()
+	if ok := pool.basicVerify(vote, headNumber, votes, isFutureVote, voteHash); !ok {
+		return false
+	}
+
+	if !isFutureVote {
+		// Verify if the vote comes from valid validators based on voteAddress (BLSPublicKey), only verify curVotes here, will verify futureVotes in transfer process.
+		if pool.engine.VerifyVote(pool.chain, vote) != nil {
+			return false
+		}
+
+		// Send vote for handler usage of broadcasting to peers.
+		voteEv := core.NewVoteEvent{Vote: vote}
+		pool.votesFeed.Send(voteEv)
+	}
+
+	pool.putVote(votes, votesPq, vote, voteData, voteHash, isFutureVote)
+
+	return true
+}
+
+func (pool *VotePool) SubscribeNewVoteEvent(ch chan<- core.NewVoteEvent) event.Subscription {
+	return pool.scope.Track(pool.votesFeed.Subscribe(ch))
+}
+
+func (pool *VotePool) putVote(m map[common.Hash]*VoteBox, votesPq *votesPriorityQueue, vote *types.VoteEnvelope, voteData *types.VoteData, voteHash common.Hash, isFutureVote bool) {
+	targetHash := vote.Data.TargetHash
+	targetNumber := vote.Data.TargetNumber
+
+	log.Debug("The vote info to put is:", "voteBlockNumber", targetNumber, "voteBlockHash", targetHash)
+
+	pool.mu.Lock()
+	defer pool.mu.Unlock()
+	if _, ok := m[targetHash]; !ok {
+		// Push into votes priorityQueue if not exist in corresponding votes Map.
+		// To be noted: will not put into priorityQueue if exists in map to avoid duplicate element with the same voteData.
+		heap.Push(votesPq, voteData)
+		voteBox := &VoteBox{
+			blockNumber:  targetNumber,
+			voteMessages: make([]*types.VoteEnvelope, 0, maxFutureVoteAmountPerBlock),
+		}
+		m[targetHash] = voteBox
+
+		if isFutureVote {
+			localFutureVotesPqGauge.Update(int64(votesPq.Len()))
+		} else {
+			localCurVotesPqGauge.Update(int64(votesPq.Len()))
+		}
+	}
+
+	// Put into corresponding votes map.
+	m[targetHash].voteMessages = append(m[targetHash].voteMessages, vote)
+	// Add into received vote to avoid future duplicated vote comes.
+	pool.receivedVotes.Add(voteHash)
+	log.Debug("VoteHash put into votepool is:", "voteHash", voteHash)
+
+	if isFutureVote {
+		localFutureVotesGauge.Inc(1)
+	} else {
+		localCurVotesGauge.Inc(1)
+	}
+	localReceivedVotesGauge.Update(int64(pool.receivedVotes.Cardinality()))
+}
+
+func (pool *VotePool) transferVotesFromFutureToCur(latestBlockHeader *types.Header) {
+	pool.mu.Lock()
+	defer pool.mu.Unlock()
+
+	futurePq := pool.futureVotesPq
+	latestBlockNumber := latestBlockHeader.Number.Uint64()
+
+	// For vote in the range [,latestBlockNumber-11), transfer to cur if valid.
+	for futurePq.Len() > 0 && futurePq.Peek().TargetNumber+upperLimitOfVoteBlockNumber < latestBlockNumber {
+		blockHash := futurePq.Peek().TargetHash
+		pool.transfer(blockHash)
+	}
+
+	// For vote in the range [latestBlockNumber-11,latestBlockNumber], only transfer the vote inside the local fork.
+	futurePqBuffer := make([]*types.VoteData, 0)
+	for futurePq.Len() > 0 && futurePq.Peek().TargetNumber <= latestBlockNumber {
+		blockHash := futurePq.Peek().TargetHash
+		header := pool.chain.GetHeaderByHash(blockHash)
+		if header == nil {
+			// Put into pq buffer used for later put again into futurePq
+			futurePqBuffer = append(futurePqBuffer, heap.Pop(futurePq).(*types.VoteData))
+			continue
+		}
+		pool.transfer(blockHash)
+	}
+
+	for _, voteData := range futurePqBuffer {
+		heap.Push(futurePq, voteData)
+	}
+}
+
+func (pool *VotePool) transfer(blockHash common.Hash) {
+	curPq, futurePq := pool.curVotesPq, pool.futureVotesPq
+	curVotes, futureVotes := pool.curVotes, pool.futureVotes
+	voteData := heap.Pop(futurePq)
+
+	defer localFutureVotesPqGauge.Update(int64(futurePq.Len()))
+
+	voteBox, ok := futureVotes[blockHash]
+	if !ok {
+		return
+	}
+
+	validVotes := make([]*types.VoteEnvelope, 0, len(voteBox.voteMessages))
+	for _, vote := range voteBox.voteMessages {
+		// Verify if the vote comes from valid validators based on voteAddress (BLSPublicKey).
+		if pool.engine.VerifyVote(pool.chain, vote) != nil {
+			pool.receivedVotes.Remove(vote.Hash())
+			continue
+		}
+
+		// In the process of transfer, send valid vote to votes channel for handler usage
+		voteEv := core.NewVoteEvent{Vote: vote}
+		pool.votesFeed.Send(voteEv)
+		validVotes = append(validVotes, vote)
+	}
+
+	// may len(curVotes[blockHash].voteMessages) extra maxCurVoteAmountPerBlock, but it doesn't matter
+	if _, ok := curVotes[blockHash]; !ok {
+		heap.Push(curPq, voteData)
+		curVotes[blockHash] = &VoteBox{voteBox.blockNumber, validVotes}
+		localCurVotesPqGauge.Update(int64(curPq.Len()))
+	} else {
+		curVotes[blockHash].voteMessages = append(curVotes[blockHash].voteMessages, validVotes...)
+	}
+
+	delete(futureVotes, blockHash)
+
+	localCurVotesGauge.Inc(int64(len(validVotes)))
+	localFutureVotesGauge.Dec(int64(len(voteBox.voteMessages)))
+}
+
+// Prune old data of duplicationSet, curVotePq and curVotesMap.
+func (pool *VotePool) prune(latestBlockNumber uint64) {
+	pool.mu.Lock()
+	defer pool.mu.Unlock()
+	curVotes := pool.curVotes
+	curVotesPq := pool.curVotesPq
+
+	// delete votes in the range [,latestBlockNumber-lowerLimitOfVoteBlockNumber]
+	for curVotesPq.Len() > 0 && curVotesPq.Peek().TargetNumber+lowerLimitOfVoteBlockNumber-1 < latestBlockNumber {
+		// Prune curPriorityQueue.
+		blockHash := heap.Pop(curVotesPq).(*types.VoteData).TargetHash
+		localCurVotesPqGauge.Update(int64(curVotesPq.Len()))
+		if voteBox, ok := curVotes[blockHash]; ok {
+			voteMessages := voteBox.voteMessages
+			// Prune duplicationSet.
+			for _, voteMessage := range voteMessages {
+				voteHash := voteMessage.Hash()
+				pool.receivedVotes.Remove(voteHash)
+			}
+			// Prune curVotes Map.
+			delete(curVotes, blockHash)
+
+			localCurVotesGauge.Dec(int64(len(voteMessages)))
+			localReceivedVotesGauge.Update(int64(pool.receivedVotes.Cardinality()))
+		}
+	}
+}
+
+// GetVotes as batch.
+func (pool *VotePool) GetVotes() []*types.VoteEnvelope {
+	pool.mu.RLock()
+	defer pool.mu.RUnlock()
+
+	votesRes := make([]*types.VoteEnvelope, 0)
+	curVotes := pool.curVotes
+	for _, voteBox := range curVotes {
+		votesRes = append(votesRes, voteBox.voteMessages...)
+	}
+	return votesRes
+}
+
+func (pool *VotePool) FetchVoteByBlockHash(blockHash common.Hash) []*types.VoteEnvelope {
+	pool.mu.RLock()
+	defer pool.mu.RUnlock()
+	if _, ok := pool.curVotes[blockHash]; ok {
+		return pool.curVotes[blockHash].voteMessages
+	}
+	return nil
+}
+
+func (pool *VotePool) basicVerify(vote *types.VoteEnvelope, headNumber uint64, m map[common.Hash]*VoteBox, isFutureVote bool, voteHash common.Hash) bool {
+	targetHash := vote.Data.TargetHash
+	pool.mu.RLock()
+	defer pool.mu.RUnlock()
+
+	// Check duplicate voteMessage firstly.
+	if pool.receivedVotes.Contains(voteHash) {
+		log.Debug("Vote pool already contained the same vote", "voteHash", voteHash)
+		return false
+	}
+
+	// To prevent DOS attacks, make sure no more than 21 votes per blockHash if not futureVotes
+	// and no more than 50 votes per blockHash if futureVotes.
+	maxVoteAmountPerBlock := maxCurVoteAmountPerBlock
+	if isFutureVote {
+		maxVoteAmountPerBlock = maxFutureVoteAmountPerBlock
+	}
+	if voteBox, ok := m[targetHash]; ok {
+		if len(voteBox.voteMessages) >= maxVoteAmountPerBlock {
+			return false
+		}
+	}
+
+	// Verify bls signature.
+	if err := vote.Verify(); err != nil {
+		log.Error("Failed to verify voteMessage", "err", err)
+		return false
+	}
+
+	return true
+}
+
+func (pq votesPriorityQueue) Less(i, j int) bool {
+	return pq[i].TargetNumber < pq[j].TargetNumber
+}
+
+func (pq votesPriorityQueue) Len() int {
+	return len(pq)
+}
+
+func (pq votesPriorityQueue) Swap(i, j int) {
+	pq[i], pq[j] = pq[j], pq[i]
+}
+
+func (pq *votesPriorityQueue) Push(vote interface{}) {
+	curVote := vote.(*types.VoteData)
+	*pq = append(*pq, curVote)
+}
+
+func (pq *votesPriorityQueue) Pop() interface{} {
+	tmp := *pq
+	l := len(tmp)
+	var res interface{} = tmp[l-1]
+	*pq = tmp[:l-1]
+	return res
+}
+
+func (pq *votesPriorityQueue) Peek() *types.VoteData {
+	if pq.Len() == 0 {
+		return nil
+	}
+	return (*pq)[0]
+}
diff --git a/core/vote/vote_pool_test.go b/core/vote/vote_pool_test.go
new file mode 100644
index 0000000000..a1bcd8d232
--- /dev/null
+++ b/core/vote/vote_pool_test.go
@@ -0,0 +1,446 @@
+// Copyright 2014 The go-ethereum Authors
+// This file is part of the go-ethereum library.
+//
+// The go-ethereum library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Lesser General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// The go-ethereum library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU Lesser General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public License
+// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
+
+package vote
+
+import (
+	"container/heap"
+	"context"
+	"encoding/json"
+	"fmt"
+	"io/ioutil"
+	"math/big"
+	"os"
+	"path/filepath"
+	"testing"
+	"time"
+
+	"github.com/google/uuid"
+	"github.com/prysmaticlabs/prysm/v3/crypto/bls"
+	"github.com/prysmaticlabs/prysm/v3/validator/accounts"
+	"github.com/prysmaticlabs/prysm/v3/validator/accounts/iface"
+	"github.com/prysmaticlabs/prysm/v3/validator/keymanager"
+	keystorev4 "github.com/wealdtech/go-eth2-wallet-encryptor-keystorev4"
+
+	"github.com/ethereum/go-ethereum/common"
+	"github.com/ethereum/go-ethereum/consensus"
+	"github.com/ethereum/go-ethereum/consensus/ethash"
+	"github.com/ethereum/go-ethereum/core"
+	"github.com/ethereum/go-ethereum/core/rawdb"
+	"github.com/ethereum/go-ethereum/core/types"
+	"github.com/ethereum/go-ethereum/core/vm"
+	"github.com/ethereum/go-ethereum/crypto"
+	"github.com/ethereum/go-ethereum/eth/downloader"
+	"github.com/ethereum/go-ethereum/event"
+	"github.com/ethereum/go-ethereum/params"
+)
+
+var (
+	// testKey is a private key to use for funding a tester account.
+	testKey, _ = crypto.HexToECDSA("b71c71a67e1177ad4e901695e1b4b9ee17ae16c6668d313eac2f96dbcda3f291")
+
+	// testAddr is the Ethereum address of the tester account.
+	testAddr = crypto.PubkeyToAddress(testKey.PublicKey)
+
+	password = "secretPassword"
+
+	timeThreshold = 30
+)
+
+type mockPOSA struct {
+	consensus.PoSA
+}
+
+type mockInvalidPOSA struct {
+	consensus.PoSA
+}
+
+func (p *mockPOSA) GetJustifiedNumberAndHash(chain consensus.ChainHeaderReader, header *types.Header) (uint64, common.Hash, error) {
+	parentHeader := chain.GetHeaderByHash(header.ParentHash)
+	if parentHeader == nil {
+		return 0, common.Hash{}, fmt.Errorf("unexpected error")
+	}
+	return parentHeader.Number.Uint64(), parentHeader.Hash(), nil
+}
+
+func (p *mockInvalidPOSA) GetJustifiedNumberAndHash(chain consensus.ChainHeaderReader, header *types.Header) (uint64, common.Hash, error) {
+	return 0, common.Hash{}, fmt.Errorf("not supported")
+}
+
+func (m *mockPOSA) VerifyVote(chain consensus.ChainHeaderReader, vote *types.VoteEnvelope) error {
+	return nil
+}
+
+func (m *mockInvalidPOSA) VerifyVote(chain consensus.ChainHeaderReader, vote *types.VoteEnvelope) error {
+	return nil
+}
+
+func (m *mockPOSA) IsActiveValidatorAt(chain consensus.ChainHeaderReader, header *types.Header) bool {
+	return true
+}
+
+func (m *mockInvalidPOSA) IsActiveValidatorAt(chain consensus.ChainHeaderReader, header *types.Header) bool {
+	return true
+}
+
+func (pool *VotePool) verifyStructureSizeOfVotePool(receivedVotes, curVotes, futureVotes, curVotesPq, futureVotesPq int) bool {
+	for i := 0; i < timeThreshold; i++ {
+		time.Sleep(1 * time.Second)
+		if pool.receivedVotes.Cardinality() == receivedVotes && len(pool.curVotes) == curVotes && len(pool.futureVotes) == futureVotes && pool.curVotesPq.Len() == curVotesPq && pool.futureVotesPq.Len() == futureVotesPq {
+			return true
+		}
+	}
+	return false
+}
+
+func (journal *VoteJournal) verifyJournal(size, lastLatestVoteNumber int) bool {
+	for i := 0; i < timeThreshold; i++ {
+		time.Sleep(1 * time.Second)
+		lastIndex, _ := journal.walLog.LastIndex()
+		firstIndex, _ := journal.walLog.FirstIndex()
+		if int(lastIndex)-int(firstIndex)+1 == size {
+			return true
+		}
+		lastVote, _ := journal.ReadVote(lastIndex)
+		if lastVote != nil && lastVote.Data.TargetNumber == uint64(lastLatestVoteNumber) {
+			return true
+		}
+	}
+	return false
+}
+
+func TestValidVotePool(t *testing.T) {
+	testVotePool(t, true)
+}
+
+func TestInvalidVotePool(t *testing.T) {
+	testVotePool(t, false)
+}
+
+func testVotePool(t *testing.T, isValidRules bool) {
+	walletPasswordDir, walletDir := setUpKeyManager(t)
+
+	// Create a database pre-initialize with a genesis block
+	db := rawdb.NewMemoryDatabase()
+	(&core.Genesis{
+		Config: params.TestChainConfig,
+		Alloc:  core.GenesisAlloc{testAddr: {Balance: big.NewInt(1000000)}},
+	}).MustCommit(db)
+
+	chain, _ := core.NewBlockChain(db, nil, params.TestChainConfig, ethash.NewFullFaker(), vm.Config{}, nil, nil)
+
+	mux := new(event.TypeMux)
+
+	var mockEngine consensus.PoSA
+	if isValidRules {
+		mockEngine = &mockPOSA{}
+	} else {
+		mockEngine = &mockInvalidPOSA{}
+	}
+
+	// Create vote pool
+	votePool := NewVotePool(params.TestChainConfig, chain, mockEngine)
+
+	// Create vote manager
+	// Create a temporary file for the votes journal
+	file, err := ioutil.TempFile("", "")
+	if err != nil {
+		t.Fatalf("failed to create temporary file path: %v", err)
+	}
+	journal := file.Name()
+	defer os.Remove(journal)
+
+	// Clean up the temporary file, we only need the path for now
+	file.Close()
+	os.Remove(journal)
+
+	voteManager, err := NewVoteManager(mux, params.TestChainConfig, chain, votePool, journal, walletPasswordDir, walletDir, mockEngine)
+	if err != nil {
+		t.Fatalf("failed to create vote managers")
+	}
+
+	voteJournal := voteManager.journal
+
+	// Send the done event of downloader
+	time.Sleep(10 * time.Millisecond)
+	mux.Post(downloader.DoneEvent{})
+
+	bs, _ := core.GenerateChain(params.TestChainConfig, chain.Genesis(), ethash.NewFaker(), db, 1, nil)
+	if _, err := chain.InsertChain(bs); err != nil {
+		panic(err)
+	}
+	for i := 0; i < 10; i++ {
+		bs, _ = core.GenerateChain(params.TestChainConfig, bs[len(bs)-1], ethash.NewFaker(), db, 1, nil)
+		if _, err := chain.InsertChain(bs); err != nil {
+			panic(err)
+		}
+	}
+
+	if !isValidRules {
+		if votePool.verifyStructureSizeOfVotePool(11, 11, 0, 11, 0) {
+			t.Fatalf("put vote failed")
+		}
+		return
+	}
+
+	if !votePool.verifyStructureSizeOfVotePool(11, 11, 0, 11, 0) {
+		t.Fatalf("put vote failed")
+	}
+
+	// Verify if votesPq is min heap
+	votesPq := votePool.curVotesPq
+	pqBuffer := make([]*types.VoteData, 0)
+	lastVotedBlockNumber := uint64(0)
+	for votesPq.Len() > 0 {
+		voteData := heap.Pop(votesPq).(*types.VoteData)
+		if voteData.TargetNumber < lastVotedBlockNumber {
+			t.Fatalf("votesPq verification failed")
+		}
+		lastVotedBlockNumber = voteData.TargetNumber
+		pqBuffer = append(pqBuffer, voteData)
+	}
+	for _, voteData := range pqBuffer {
+		heap.Push(votesPq, voteData)
+	}
+
+	// Verify journal
+	if !voteJournal.verifyJournal(11, 11) {
+		t.Fatalf("journal failed")
+	}
+
+	bs, _ = core.GenerateChain(params.TestChainConfig, bs[len(bs)-1], ethash.NewFaker(), db, 1, nil)
+	if _, err := chain.InsertChain(bs); err != nil {
+		panic(err)
+	}
+
+	if !votePool.verifyStructureSizeOfVotePool(12, 12, 0, 12, 0) {
+		t.Fatalf("put vote failed")
+	}
+
+	// Verify journal
+	if !voteJournal.verifyJournal(12, 12) {
+		t.Fatalf("journal failed")
+	}
+
+	for i := 0; i < 256; i++ {
+		bs, _ = core.GenerateChain(params.TestChainConfig, bs[len(bs)-1], ethash.NewFaker(), db, 1, nil)
+		if _, err := chain.InsertChain(bs); err != nil {
+			panic(err)
+		}
+	}
+
+	// Verify journal
+	if !voteJournal.verifyJournal(268, 268) {
+		t.Fatalf("journal failed")
+	}
+
+	// currently chain size is 268, and votePool should be pruned, so vote pool size should be 256!
+	if !votePool.verifyStructureSizeOfVotePool(256, 256, 0, 256, 0) {
+		t.Fatalf("put vote failed")
+	}
+
+	// Test invalid vote whose number larger than latestHeader + 13
+	invalidVote := &types.VoteEnvelope{
+		Data: &types.VoteData{
+			TargetNumber: 1000,
+		},
+	}
+	voteManager.pool.PutVote(invalidVote)
+
+	if !votePool.verifyStructureSizeOfVotePool(256, 256, 0, 256, 0) {
+		t.Fatalf("put vote failed")
+	}
+
+	votes := votePool.GetVotes()
+	if len(votes) != 256 {
+		t.Fatalf("get votes failed")
+	}
+
+	// Verify journal
+	if !voteJournal.verifyJournal(268, 268) {
+		t.Fatalf("journal failed")
+	}
+
+	// Test future votes scenario: votes number within latestBlockHeader ~ latestBlockHeader + 13
+	futureVote := &types.VoteEnvelope{
+		Data: &types.VoteData{
+			TargetNumber: 279,
+		},
+	}
+	if err := voteManager.signer.SignVote(futureVote); err != nil {
+		t.Fatalf("sign vote failed")
+	}
+	voteManager.pool.PutVote(futureVote)
+
+	if !votePool.verifyStructureSizeOfVotePool(257, 256, 1, 256, 1) {
+		t.Fatalf("put vote failed")
+	}
+
+	// Verify journal
+	if !voteJournal.verifyJournal(268, 268) {
+		t.Fatalf("journal failed")
+	}
+
+	// Test duplicate vote case, shouldn'd be put into vote pool
+	duplicateVote := &types.VoteEnvelope{
+		Data: &types.VoteData{
+			TargetNumber: 279,
+		},
+	}
+	if err := voteManager.signer.SignVote(duplicateVote); err != nil {
+		t.Fatalf("sign vote failed")
+	}
+	voteManager.pool.PutVote(duplicateVote)
+
+	if !votePool.verifyStructureSizeOfVotePool(257, 256, 1, 256, 1) {
+		t.Fatalf("put vote failed")
+	}
+
+	// Verify journal
+	if !voteJournal.verifyJournal(268, 268) {
+		t.Fatalf("journal failed")
+	}
+
+	// Test future votes larger than latestBlockNumber + 13 should be rejected
+	futureVote = &types.VoteEnvelope{
+		Data: &types.VoteData{
+			TargetNumber: 282,
+			TargetHash:   common.Hash{},
+		},
+	}
+	voteManager.pool.PutVote(futureVote)
+	if !votePool.verifyStructureSizeOfVotePool(257, 256, 1, 256, 1) {
+		t.Fatalf("put vote failed")
+	}
+
+	// Test transfer votes from future to cur, latest block header is #288 after the following generation
+	// For the above BlockNumber 279, it did not have blockHash, should be assigned as well below.
+	curNumber := 268
+	var futureBlockHash common.Hash
+	for i := 0; i < 20; i++ {
+		bs, _ = core.GenerateChain(params.TestChainConfig, bs[len(bs)-1], ethash.NewFaker(), db, 1, nil)
+		curNumber += 1
+		if curNumber == 279 {
+			futureBlockHash = bs[0].Hash()
+			futureVotesMap := votePool.futureVotes
+			voteBox := futureVotesMap[common.Hash{}]
+			futureVotesMap[futureBlockHash] = voteBox
+			delete(futureVotesMap, common.Hash{})
+			futureVotesPq := votePool.futureVotesPq
+			futureVotesPq.Peek().TargetHash = futureBlockHash
+		}
+		if _, err := chain.InsertChain(bs); err != nil {
+			panic(err)
+		}
+	}
+
+	for i := 0; i < timeThreshold; i++ {
+		time.Sleep(1 * time.Second)
+		_, ok := votePool.curVotes[futureBlockHash]
+		if ok && len(votePool.curVotes[futureBlockHash].voteMessages) == 2 {
+			break
+		}
+	}
+	if votePool.curVotes[futureBlockHash] == nil || len(votePool.curVotes[futureBlockHash].voteMessages) != 2 {
+		t.Fatalf("transfer vote failed")
+	}
+
+	// Pruner will keep the size of votePool as latestBlockHeader-255~latestBlockHeader, then final result should be 256!
+	if !votePool.verifyStructureSizeOfVotePool(257, 256, 0, 256, 0) {
+		t.Fatalf("put vote failed")
+	}
+
+	// Verify journal
+	if !voteJournal.verifyJournal(288, 288) {
+		t.Fatalf("journal failed")
+	}
+
+	for i := 0; i < 224; i++ {
+		bs, _ = core.GenerateChain(params.TestChainConfig, bs[len(bs)-1], ethash.NewFaker(), db, 1, nil)
+		if _, err := chain.InsertChain(bs); err != nil {
+			panic(err)
+		}
+	}
+
+	// Verify journal
+	if !voteJournal.verifyJournal(512, 512) {
+		t.Fatalf("journal failed")
+	}
+
+	bs, _ = core.GenerateChain(params.TestChainConfig, bs[len(bs)-1], ethash.NewFaker(), db, 1, nil)
+	if _, err := chain.InsertChain(bs); err != nil {
+		panic(err)
+	}
+
+	// Verify if journal no longer than 512
+	if !voteJournal.verifyJournal(512, 513) {
+		t.Fatalf("journal failed")
+	}
+}
+
+func setUpKeyManager(t *testing.T) (string, string) {
+	walletDir := filepath.Join(t.TempDir(), "wallet")
+	opts := []accounts.Option{}
+	opts = append(opts, accounts.WithWalletDir(walletDir))
+	opts = append(opts, accounts.WithWalletPassword(password))
+	opts = append(opts, accounts.WithKeymanagerType(keymanager.Local))
+	opts = append(opts, accounts.WithSkipMnemonicConfirm(true))
+	acc, err := accounts.NewCLIManager(opts...)
+	if err != nil {
+		t.Fatalf("New Accounts CLI Manager failed: %v.", err)
+	}
+	walletPasswordDir := filepath.Join(t.TempDir(), "password")
+	if err := os.MkdirAll(filepath.Dir(walletPasswordDir), 0700); err != nil {
+		t.Fatalf("failed to create walletPassword dir: %v", err)
+	}
+	if err := ioutil.WriteFile(walletPasswordDir, []byte(password), 0600); err != nil {
+		t.Fatalf("failed to write wallet password dir: %v", err)
+	}
+
+	w, err := acc.WalletCreate(context.Background())
+	if err != nil {
+		t.Fatalf("failed to create wallet: %v", err)
+	}
+	km, _ := w.InitializeKeymanager(context.Background(), iface.InitKeymanagerConfig{ListenForChanges: false})
+	k, _ := km.(keymanager.Importer)
+	secretKey, _ := bls.RandKey()
+	encryptor := keystorev4.New()
+	pubKeyBytes := secretKey.PublicKey().Marshal()
+	cryptoFields, err := encryptor.Encrypt(secretKey.Marshal(), password)
+	if err != nil {
+		t.Fatalf("failed: %v", err)
+	}
+
+	id, _ := uuid.NewRandom()
+	keystore := &keymanager.Keystore{
+		Crypto:  cryptoFields,
+		ID:      id.String(),
+		Pubkey:  fmt.Sprintf("%x", pubKeyBytes),
+		Version: encryptor.Version(),
+		Name:    encryptor.Name(),
+	}
+
+	encodedFile, _ := json.MarshalIndent(keystore, "", "\t")
+	keyStoreDir := filepath.Join(t.TempDir(), "keystore")
+	keystoreFile, _ := os.Create(fmt.Sprintf("%s/keystore-%s.json", keyStoreDir, "publichh"))
+	keystoreFile.Write(encodedFile)
+	accounts.ImportAccounts(context.Background(), &accounts.ImportAccountsConfig{
+		Importer:        k,
+		Keystores:       []*keymanager.Keystore{keystore},
+		AccountPassword: password,
+	})
+	return walletPasswordDir, walletDir
+}
diff --git a/core/vote/vote_signer.go b/core/vote/vote_signer.go
new file mode 100644
index 0000000000..1ea7c95f14
--- /dev/null
+++ b/core/vote/vote_signer.go
@@ -0,0 +1,110 @@
+package vote
+
+import (
+	"context"
+	"fmt"
+	"io/ioutil"
+	"time"
+
+	"github.com/pkg/errors"
+
+	"github.com/prysmaticlabs/prysm/v3/crypto/bls"
+	validatorpb "github.com/prysmaticlabs/prysm/v3/proto/prysm/v1alpha1/validator-client"
+	"github.com/prysmaticlabs/prysm/v3/validator/accounts/iface"
+	"github.com/prysmaticlabs/prysm/v3/validator/accounts/wallet"
+	"github.com/prysmaticlabs/prysm/v3/validator/keymanager"
+
+	"github.com/ethereum/go-ethereum/common"
+	"github.com/ethereum/go-ethereum/core/types"
+	"github.com/ethereum/go-ethereum/log"
+	"github.com/ethereum/go-ethereum/metrics"
+)
+
+const (
+	voteSignerTimeout = time.Second * 5
+)
+
+type VoteSigner struct {
+	km     *keymanager.IKeymanager
+	pubKey [48]byte
+}
+
+func NewVoteSigner(blsPasswordPath, blsWalletPath string) (*VoteSigner, error) {
+	dirExists, err := wallet.Exists(blsWalletPath)
+	if err != nil {
+		log.Error("Check BLS wallet exists", "err", err)
+		return nil, err
+	}
+	if !dirExists {
+		log.Error("BLS wallet did not exists.")
+		return nil, fmt.Errorf("BLS wallet did not exists.")
+	}
+
+	walletPassword, err := ioutil.ReadFile(blsPasswordPath)
+	if err != nil {
+		log.Error("Read BLS wallet password", "err", err)
+		return nil, err
+	}
+	log.Info("Read BLS wallet password successfully")
+
+	w, err := wallet.OpenWallet(context.Background(), &wallet.Config{
+		WalletDir:      blsWalletPath,
+		WalletPassword: string(walletPassword),
+	})
+	if err != nil {
+		log.Error("Open BLS wallet failed", "err", err)
+		return nil, err
+	}
+	log.Info("Open BLS wallet successfully")
+
+	km, err := w.InitializeKeymanager(context.Background(), iface.InitKeymanagerConfig{ListenForChanges: false})
+	if err != nil {
+		log.Error("Initialize key manager failed", "err", err)
+		return nil, err
+	}
+	log.Info("Initialized keymanager successfully")
+
+	ctx, cancel := context.WithTimeout(context.Background(), voteSignerTimeout)
+	defer cancel()
+
+	pubKeys, err := km.FetchValidatingPublicKeys(ctx)
+	if err != nil {
+		return nil, errors.Wrap(err, "could not fetch validating public keys")
+	}
+
+	return &VoteSigner{
+		km:     &km,
+		pubKey: pubKeys[0],
+	}, nil
+}
+
+func (signer *VoteSigner) SignVote(vote *types.VoteEnvelope) error {
+	// Sign the vote, fetch the first pubKey as validator's bls public key.
+	pubKey := signer.pubKey
+	blsPubKey, err := bls.PublicKeyFromBytes(pubKey[:])
+	if err != nil {
+		return errors.Wrap(err, "convert public key from bytes to bls failed")
+	}
+
+	voteDataHash := vote.Data.Hash()
+
+	ctx, cancel := context.WithTimeout(context.Background(), voteSignerTimeout)
+	defer cancel()
+
+	signature, err := (*signer.km).Sign(ctx, &validatorpb.SignRequest{
+		PublicKey:   pubKey[:],
+		SigningRoot: voteDataHash[:],
+	})
+	if err != nil {
+		return err
+	}
+
+	copy(vote.VoteAddress[:], blsPubKey.Marshal()[:])
+	copy(vote.Signature[:], signature.Marshal()[:])
+	return nil
+}
+
+// Metrics to indicate if there's any failed signing.
+func votesSigningErrorMetric(blockNumber uint64, blockHash common.Hash) metrics.Gauge {
+	return metrics.GetOrRegisterGauge(fmt.Sprintf("voteSigning/blockNumber/%d/blockHash/%s", blockNumber, blockHash), nil)
+}
diff --git a/docker/Dockerfile b/docker/Dockerfile
index b703371707..484a12f45b 100644
--- a/docker/Dockerfile
+++ b/docker/Dockerfile
@@ -1,9 +1,11 @@
 FROM golang:1.19-alpine as bsc
 
-RUN apk add --no-cache make gcc musl-dev linux-headers git bash
+RUN apk add --no-cache make cmake gcc musl-dev linux-headers git bash build-base libc-dev
 
 ADD . /bsc
 WORKDIR /bsc
+ENV CGO_CFLAGS="-O -D__BLST_PORTABLE__" 
+ENV CGO_CFLAGS_ALLOW="-O -D__BLST_PORTABLE__"
 RUN make geth
 RUN mv /bsc/build/bin/geth /usr/local/bin/geth
 
@@ -12,7 +14,7 @@ ENTRYPOINT [ "/usr/local/bin/geth" ]
 
 FROM ethereum/solc:0.6.4-alpine as bsc-genesis
 
-RUN apk add --d --no-cache ca-certificates npm nodejs bash alpine-sdk
+RUN apk add --no-cache ca-certificates npm nodejs bash alpine-sdk expect
 
 RUN git clone https://github.com/binance-chain/bsc-genesis-contract.git /root/genesis \
     && cd /root/genesis && npm install
diff --git a/docker/Dockerfile.truffle b/docker/Dockerfile.truffle
index 28ab9da393..93675241c2 100644
--- a/docker/Dockerfile.truffle
+++ b/docker/Dockerfile.truffle
@@ -1,6 +1,6 @@
 FROM ethereum/solc:0.6.4-alpine
 
-RUN apk add --d --no-cache ca-certificates npm nodejs bash alpine-sdk git
+RUN apk add --no-cache ca-certificates npm nodejs bash alpine-sdk git
 
 RUN git clone https://github.com/binance-chain/canonical-upgradeable-bep20.git /usr/app/canonical-upgradeable-bep20
 
diff --git a/eth/api.go b/eth/api.go
index f81dfa922b..f7e16b9d61 100644
--- a/eth/api.go
+++ b/eth/api.go
@@ -282,16 +282,24 @@ func (api *PublicDebugAPI) DumpBlock(blockNr rpc.BlockNumber) (state.Dump, error
 		_, stateDb := api.eth.miner.Pending()
 		return stateDb.RawDump(opts), nil
 	}
-	var block *types.Block
+	var header *types.Header
 	if blockNr == rpc.LatestBlockNumber {
-		block = api.eth.blockchain.CurrentBlock()
+		header = api.eth.blockchain.CurrentHeader()
+	} else if blockNr == rpc.FinalizedBlockNumber {
+		header = api.eth.blockchain.CurrentFinalBlock()
+	} else if blockNr == rpc.SafeBlockNumber {
+		header = api.eth.blockchain.CurrentSafeBlock()
 	} else {
-		block = api.eth.blockchain.GetBlockByNumber(uint64(blockNr))
+		block := api.eth.blockchain.GetBlockByNumber(uint64(blockNr))
+		if block == nil {
+			return state.Dump{}, fmt.Errorf("block #%d not found", blockNr)
+		}
+		header = block.Header()
 	}
-	if block == nil {
+	if header == nil {
 		return state.Dump{}, fmt.Errorf("block #%d not found", blockNr)
 	}
-	stateDb, err := api.eth.BlockChain().StateAt(block.Root())
+	stateDb, err := api.eth.BlockChain().StateAt(header.Root)
 	if err != nil {
 		return state.Dump{}, err
 	}
@@ -370,16 +378,24 @@ func (api *PublicDebugAPI) AccountRange(blockNrOrHash rpc.BlockNumberOrHash, sta
 			// the miner and operate on those
 			_, stateDb = api.eth.miner.Pending()
 		} else {
-			var block *types.Block
+			var header *types.Header
 			if number == rpc.LatestBlockNumber {
-				block = api.eth.blockchain.CurrentBlock()
+				header = api.eth.blockchain.CurrentHeader()
+			} else if number == rpc.FinalizedBlockNumber {
+				header = api.eth.blockchain.CurrentFinalBlock()
+			} else if number == rpc.SafeBlockNumber {
+				header = api.eth.blockchain.CurrentSafeBlock()
 			} else {
-				block = api.eth.blockchain.GetBlockByNumber(uint64(number))
+				block := api.eth.blockchain.GetBlockByNumber(uint64(number))
+				if block == nil {
+					return state.IteratorDump{}, fmt.Errorf("block #%d not found", number)
+				}
+				header = block.Header()
 			}
-			if block == nil {
+			if header == nil {
 				return state.IteratorDump{}, fmt.Errorf("block #%d not found", number)
 			}
-			stateDb, err = api.eth.BlockChain().StateAt(block.Root())
+			stateDb, err = api.eth.BlockChain().StateAt(header.Root)
 			if err != nil {
 				return state.IteratorDump{}, err
 			}
diff --git a/eth/api_backend.go b/eth/api_backend.go
index 7c0f1f0482..dc48c3f073 100644
--- a/eth/api_backend.go
+++ b/eth/api_backend.go
@@ -19,6 +19,7 @@ package eth
 import (
 	"context"
 	"errors"
+	"fmt"
 	"math/big"
 	"time"
 
@@ -32,6 +33,7 @@ import (
 	"github.com/ethereum/go-ethereum/core/state"
 	"github.com/ethereum/go-ethereum/core/types"
 	"github.com/ethereum/go-ethereum/core/vm"
+	"github.com/ethereum/go-ethereum/eth/downloader"
 	"github.com/ethereum/go-ethereum/eth/gasprice"
 	"github.com/ethereum/go-ethereum/ethdb"
 	"github.com/ethereum/go-ethereum/event"
@@ -70,7 +72,21 @@ func (b *EthAPIBackend) HeaderByNumber(ctx context.Context, number rpc.BlockNumb
 	}
 	// Otherwise resolve and return the block
 	if number == rpc.LatestBlockNumber {
-		return b.eth.blockchain.CurrentBlock().Header(), nil
+		return b.eth.blockchain.CurrentHeader(), nil
+	}
+	if number == rpc.FinalizedBlockNumber {
+		block := b.eth.blockchain.CurrentFinalBlock()
+		if block != nil {
+			return block, nil
+		}
+		return nil, errors.New("finalized block not found")
+	}
+	if number == rpc.SafeBlockNumber {
+		block := b.eth.blockchain.CurrentSafeBlock()
+		if block != nil {
+			return block, nil
+		}
+		return nil, errors.New("safe block not found")
 	}
 	return b.eth.blockchain.GetHeaderByNumber(uint64(number)), nil
 }
@@ -106,6 +122,20 @@ func (b *EthAPIBackend) BlockByNumber(ctx context.Context, number rpc.BlockNumbe
 	if number == rpc.LatestBlockNumber {
 		return b.eth.blockchain.CurrentBlock(), nil
 	}
+	if number == rpc.FinalizedBlockNumber {
+		header := b.eth.blockchain.CurrentFinalBlock()
+		if header == nil {
+			return nil, fmt.Errorf("block #%d not found", number)
+		}
+		return b.eth.blockchain.GetBlock(header.Hash(), header.Number.Uint64()), nil
+	}
+	if number == rpc.SafeBlockNumber {
+		header := b.eth.blockchain.CurrentSafeBlock()
+		if header == nil {
+			return nil, fmt.Errorf("block #%d not found", number)
+		}
+		return b.eth.blockchain.GetBlock(header.Hash(), header.Number.Uint64()), nil
+	}
 	return b.eth.blockchain.GetBlockByNumber(uint64(number)), nil
 }
 
@@ -227,6 +257,10 @@ func (b *EthAPIBackend) SubscribeChainHeadEvent(ch chan<- core.ChainHeadEvent) e
 	return b.eth.BlockChain().SubscribeChainHeadEvent(ch)
 }
 
+func (b *EthAPIBackend) SubscribeFinalizedHeaderEvent(ch chan<- core.FinalizedHeaderEvent) event.Subscription {
+	return b.eth.BlockChain().SubscribeFinalizedHeaderEvent(ch)
+}
+
 func (b *EthAPIBackend) SubscribeChainSideEvent(ch chan<- core.ChainSideEvent) event.Subscription {
 	return b.eth.BlockChain().SubscribeChainSideEvent(ch)
 }
@@ -281,6 +315,17 @@ func (b *EthAPIBackend) SubscribeNewTxsEvent(ch chan<- core.NewTxsEvent) event.S
 	return b.eth.TxPool().SubscribeNewTxsEvent(ch)
 }
 
+func (b *EthAPIBackend) SubscribeNewVoteEvent(ch chan<- core.NewVoteEvent) event.Subscription {
+	if b.eth.VotePool() == nil {
+		return nil
+	}
+	return b.eth.VotePool().SubscribeNewVoteEvent(ch)
+}
+
+func (b *EthAPIBackend) Downloader() *downloader.Downloader {
+	return b.eth.Downloader()
+}
+
 func (b *EthAPIBackend) SyncProgress() ethereum.SyncProgress {
 	return b.eth.Downloader().Progress()
 }
diff --git a/eth/backend.go b/eth/backend.go
index fc0ca6534c..3dccb96f3f 100644
--- a/eth/backend.go
+++ b/eth/backend.go
@@ -39,11 +39,12 @@ import (
 	"github.com/ethereum/go-ethereum/core/state/pruner"
 	"github.com/ethereum/go-ethereum/core/types"
 	"github.com/ethereum/go-ethereum/core/vm"
+	"github.com/ethereum/go-ethereum/core/vote"
 	"github.com/ethereum/go-ethereum/eth/downloader"
 	"github.com/ethereum/go-ethereum/eth/ethconfig"
 	"github.com/ethereum/go-ethereum/eth/filters"
 	"github.com/ethereum/go-ethereum/eth/gasprice"
-	"github.com/ethereum/go-ethereum/eth/protocols/diff"
+	"github.com/ethereum/go-ethereum/eth/protocols/bsc"
 	"github.com/ethereum/go-ethereum/eth/protocols/eth"
 	"github.com/ethereum/go-ethereum/eth/protocols/snap"
 	"github.com/ethereum/go-ethereum/eth/protocols/trust"
@@ -77,6 +78,7 @@ type Ethereum struct {
 	ethDialCandidates   enode.Iterator
 	snapDialCandidates  enode.Iterator
 	trustDialCandidates enode.Iterator
+	bscDialCandidates   enode.Iterator
 	merger              *consensus.Merger
 
 	// DB interfaces
@@ -104,6 +106,8 @@ type Ethereum struct {
 	lock sync.RWMutex // Protects the variadic fields (e.g. gas price and etherbase)
 
 	shutdownTracker *shutdowncheck.ShutdownTracker // Tracks if and when the node has shutdown ungracefully
+
+	votePool *vote.VotePool
 }
 
 // New creates a new Ethereum object (including the
@@ -244,6 +248,31 @@ func New(stack *node.Node, config *ethconfig.Config) (*Ethereum, error) {
 	}
 	eth.txPool = core.NewTxPool(config.TxPool, chainConfig, eth.blockchain)
 
+	// Create voteManager instance
+	if posa, ok := eth.engine.(consensus.PoSA); ok {
+		// Create votePool instance
+		votePool := vote.NewVotePool(chainConfig, eth.blockchain, posa)
+		eth.votePool = votePool
+		if parlia, ok := eth.engine.(*parlia.Parlia); ok {
+			parlia.VotePool = votePool
+		} else {
+			return nil, fmt.Errorf("Engine is not Parlia type")
+		}
+		log.Info("Create votePool successfully")
+
+		if config.Miner.VoteEnable {
+			conf := stack.Config()
+			blsPasswordPath := stack.ResolvePath(conf.BLSPasswordFile)
+			blsWalletPath := stack.ResolvePath(conf.BLSWalletDir)
+			voteJournalPath := stack.ResolvePath(conf.VoteJournalDir)
+			if _, err := vote.NewVoteManager(eth.EventMux(), chainConfig, eth.blockchain, votePool, voteJournalPath, blsPasswordPath, blsWalletPath, posa); err != nil {
+				log.Error("Failed to Initialize voteManager", "err", err)
+				return nil, err
+			}
+			log.Info("Create voteManager successfully")
+		}
+	}
+
 	// Permit the downloader to use the trie cache allowance during fast sync
 	cacheLimit := cacheConfig.TrieCleanLimit + cacheConfig.TrieDirtyLimit + cacheConfig.SnapshotLimit
 	checkpoint := config.Checkpoint
@@ -269,6 +298,9 @@ func New(stack *node.Node, config *ethconfig.Config) (*Ethereum, error) {
 	}); err != nil {
 		return nil, err
 	}
+	if eth.votePool != nil {
+		eth.handler.votepool = eth.votePool
+	}
 
 	eth.miner = miner.New(eth, &config.Miner, chainConfig, eth.EventMux(), eth.engine, eth.isLocalBlock)
 	eth.miner.SetExtra(makeExtraData(config.Miner.ExtraData))
@@ -293,6 +325,10 @@ func New(stack *node.Node, config *ethconfig.Config) (*Ethereum, error) {
 	if err != nil {
 		return nil, err
 	}
+	eth.bscDialCandidates, err = dnsclient.NewIterator(eth.config.BscDiscoveryURLs...)
+	if err != nil {
+		return nil, err
+	}
 
 	// Start the RPC service
 	eth.netRPCService = ethapi.NewPublicNetAPI(eth.p2pServer, config.NetworkId)
@@ -558,6 +594,7 @@ func (s *Ethereum) Miner() *miner.Miner { return s.miner }
 func (s *Ethereum) AccountManager() *accounts.Manager  { return s.accountManager }
 func (s *Ethereum) BlockChain() *core.BlockChain       { return s.blockchain }
 func (s *Ethereum) TxPool() *core.TxPool               { return s.txPool }
+func (s *Ethereum) VotePool() *vote.VotePool           { return s.votePool }
 func (s *Ethereum) EventMux() *event.TypeMux           { return s.eventMux }
 func (s *Ethereum) Engine() consensus.Engine           { return s.engine }
 func (s *Ethereum) ChainDb() ethdb.Database            { return s.chainDb }
@@ -581,12 +618,15 @@ func (s *Ethereum) Protocols() []p2p.Protocol {
 		protos = append(protos, snap.MakeProtocols((*snapHandler)(s.handler), s.snapDialCandidates)...)
 	}
 	// diff protocol can still open without snap protocol
-	if !s.config.DisableDiffProtocol {
-		protos = append(protos, diff.MakeProtocols((*diffHandler)(s.handler), s.snapDialCandidates)...)
-	}
+	// if !s.config.DisableDiffProtocol {
+	// 	protos = append(protos, diff.MakeProtocols((*diffHandler)(s.handler), s.snapDialCandidates)...)
+	// }
 	if s.config.EnableTrustProtocol {
 		protos = append(protos, trust.MakeProtocols((*trustHandler)(s.handler), s.snapDialCandidates)...)
 	}
+	if !s.config.DisableBscProtocol {
+		protos = append(protos, bsc.MakeProtocols((*bscHandler)(s.handler), s.bscDialCandidates)...)
+	}
 	return protos
 }
 
@@ -621,6 +661,7 @@ func (s *Ethereum) Stop() error {
 	s.ethDialCandidates.Close()
 	s.snapDialCandidates.Close()
 	s.trustDialCandidates.Close()
+	s.bscDialCandidates.Close()
 	s.handler.Stop()
 
 	// Then stop everything else.
diff --git a/eth/downloader/downloader.go b/eth/downloader/downloader.go
index a5ac153afc..70dc7e15b9 100644
--- a/eth/downloader/downloader.go
+++ b/eth/downloader/downloader.go
@@ -374,8 +374,8 @@ func (d *Downloader) UnregisterPeer(id string) error {
 	return nil
 }
 
-// Synchronise tries to sync up our local block chain with a remote peer, both
-// adding various sanity checks as well as wrapping it with various log entries.
+// Synchronise tries to sync up our local blockchain with a remote peer, both
+// adding various sanity checks and wrapping it with various log entries.
 func (d *Downloader) Synchronise(id string, head common.Hash, td *big.Int, mode SyncMode) error {
 	err := d.synchronise(id, head, td, mode)
 
diff --git a/eth/ethconfig/config.go b/eth/ethconfig/config.go
index 8d032260a7..29bb597410 100644
--- a/eth/ethconfig/config.go
+++ b/eth/ethconfig/config.go
@@ -144,12 +144,14 @@ type Config struct {
 	EthDiscoveryURLs   []string
 	SnapDiscoveryURLs  []string
 	TrustDiscoveryURLs []string
+	BscDiscoveryURLs   []string
 
 	NoPruning           bool // Whether to disable pruning and flush everything to disk
 	DirectBroadcast     bool
 	DisableSnapProtocol bool //Whether disable snap protocol
 	DisableDiffProtocol bool //Whether disable diff protocol
 	EnableTrustProtocol bool //Whether enable trust protocol
+	DisableBscProtocol  bool //Whether disable bsc protocol
 	DiffSync            bool // Whether support diff sync
 	PipeCommit          bool
 	RangeLimit          bool
diff --git a/eth/ethconfig/gen_config.go b/eth/ethconfig/gen_config.go
index c0d44ce141..13891c04c9 100644
--- a/eth/ethconfig/gen_config.go
+++ b/eth/ethconfig/gen_config.go
@@ -18,64 +18,66 @@ import (
 // MarshalTOML marshals as TOML.
 func (c Config) MarshalTOML() (interface{}, error) {
 	type Config struct {
-		Genesis                 *core.Genesis `toml:",omitempty"`
-		NetworkId               uint64
-		SyncMode                downloader.SyncMode
-		DisablePeerTxBroadcast  bool
-		EthDiscoveryURLs        []string
-		SnapDiscoveryURLs       []string
-		TrustDiscoveryURLs      []string
-		NoPruning               bool
-		NoPrefetch              bool
-		DirectBroadcast         bool
-		DisableSnapProtocol     bool
-		DisableDiffProtocol     bool
-		EnableTrustProtocol     bool
-		DiffSync                bool
-		RangeLimit              bool
-		TxLookupLimit           uint64                 `toml:",omitempty"`
-		Whitelist               map[uint64]common.Hash `toml:"-"`
-		LightServ               int                    `toml:",omitempty"`
-		LightIngress            int                    `toml:",omitempty"`
-		LightEgress             int                    `toml:",omitempty"`
-		LightPeers              int                    `toml:",omitempty"`
-		LightNoPrune            bool                   `toml:",omitempty"`
-		LightNoSyncServe        bool                   `toml:",omitempty"`
-		SyncFromCheckpoint      bool                   `toml:",omitempty"`
-		UltraLightServers       []string               `toml:",omitempty"`
-		UltraLightFraction      int                    `toml:",omitempty"`
-		UltraLightOnlyAnnounce  bool                   `toml:",omitempty"`
-		SkipBcVersionCheck      bool                   `toml:"-"`
-		DatabaseHandles         int                    `toml:"-"`
-		DatabaseCache           int
-		DatabaseFreezer         string
-		DatabaseDiff            string
-		TrieCleanCache          int
-		TrieCleanCacheJournal   string        `toml:",omitempty"`
-		TrieCleanCacheRejournal time.Duration `toml:",omitempty"`
-		TrieDirtyCache          int
-		TrieTimeout             time.Duration
-		SnapshotCache           int
-		TriesInMemory           uint64
-		TriesVerifyMode         core.VerifyMode
-		Preimages               bool
-		PersistDiff             bool
-		DiffBlock               uint64 `toml:",omitempty"`
-		PruneAncientData        bool
-		Miner                   miner.Config
-		Ethash                  ethash.Config `toml:",omitempty"`
-		TxPool                  core.TxPoolConfig
-		GPO                     gasprice.Config
-		EnablePreimageRecording bool
-		DocRoot                 string `toml:"-"`
-		EWASMInterpreter        string
-		EVMInterpreter          string
-		RPCGasCap               uint64
-		RPCEVMTimeout           time.Duration
-		RPCTxFeeCap             float64
-		Checkpoint              *params.TrustedCheckpoint      `toml:",omitempty"`
-		CheckpointOracle        *params.CheckpointOracleConfig `toml:",omitempty"`
-		OverrideBerlin          *big.Int                       `toml:",omitempty"`
+		Genesis                         *core.Genesis `toml:",omitempty"`
+		NetworkId                       uint64
+		SyncMode                        downloader.SyncMode
+		DisablePeerTxBroadcast          bool
+		EthDiscoveryURLs                []string
+		SnapDiscoveryURLs               []string
+		TrustDiscoveryURLs              []string
+		BscDiscoveryURLs               []string
+		NoPruning                       bool
+		NoPrefetch                      bool
+		DirectBroadcast                 bool
+		DisableSnapProtocol             bool
+		DisableDiffProtocol             bool
+		EnableTrustProtocol             bool
+		DisableBscProtocol             bool
+		DiffSync                        bool
+		RangeLimit                      bool
+		TxLookupLimit                   uint64                 `toml:",omitempty"`
+		Whitelist                       map[uint64]common.Hash `toml:"-"`
+		LightServ                       int                    `toml:",omitempty"`
+		LightIngress                    int                    `toml:",omitempty"`
+		LightEgress                     int                    `toml:",omitempty"`
+		LightPeers                      int                    `toml:",omitempty"`
+		LightNoPrune                    bool                   `toml:",omitempty"`
+		LightNoSyncServe                bool                   `toml:",omitempty"`
+		SyncFromCheckpoint              bool                   `toml:",omitempty"`
+		UltraLightServers               []string               `toml:",omitempty"`
+		UltraLightFraction              int                    `toml:",omitempty"`
+		UltraLightOnlyAnnounce          bool                   `toml:",omitempty"`
+		SkipBcVersionCheck              bool                   `toml:"-"`
+		DatabaseHandles                 int                    `toml:"-"`
+		DatabaseCache                   int
+		DatabaseFreezer                 string
+		DatabaseDiff                    string
+		TrieCleanCache                  int
+		TrieCleanCacheJournal           string        `toml:",omitempty"`
+		TrieCleanCacheRejournal         time.Duration `toml:",omitempty"`
+		TrieDirtyCache                  int
+		TrieTimeout                     time.Duration
+		SnapshotCache                   int
+		TriesInMemory                   uint64
+		TriesVerifyMode                 core.VerifyMode
+		Preimages                       bool
+		PersistDiff                     bool
+		DiffBlock                       uint64 `toml:",omitempty"`
+		PruneAncientData                bool
+		Miner                           miner.Config
+		Ethash                          ethash.Config `toml:",omitempty"`
+		TxPool                          core.TxPoolConfig
+		GPO                             gasprice.Config
+		EnablePreimageRecording         bool
+		DocRoot                         string `toml:"-"`
+		EWASMInterpreter                string
+		EVMInterpreter                  string
+		RPCGasCap                       uint64
+		RPCEVMTimeout                   time.Duration
+		RPCTxFeeCap                     float64
+		Checkpoint                      *params.TrustedCheckpoint      `toml:",omitempty"`
+		CheckpointOracle                *params.CheckpointOracleConfig `toml:",omitempty"`
+		OverrideBerlin                  *big.Int                       `toml:",omitempty"`
 		OverrideArrowGlacier            *big.Int                       `toml:",omitempty"`
 		OverrideTerminalTotalDifficulty *big.Int                       `toml:",omitempty"`
 	}
@@ -87,11 +89,13 @@ func (c Config) MarshalTOML() (interface{}, error) {
 	enc.EthDiscoveryURLs = c.EthDiscoveryURLs
 	enc.SnapDiscoveryURLs = c.SnapDiscoveryURLs
 	enc.TrustDiscoveryURLs = c.TrustDiscoveryURLs
+	enc.BscDiscoveryURLs = c.BscDiscoveryURLs
 	enc.NoPruning = c.NoPruning
 	enc.DirectBroadcast = c.DirectBroadcast
 	enc.DisableSnapProtocol = c.DisableSnapProtocol
 	enc.DisableDiffProtocol = c.DisableDiffProtocol
 	enc.EnableTrustProtocol = c.EnableTrustProtocol
+	enc.DisableBscProtocol = c.DisableBscProtocol
 	enc.DiffSync = c.DiffSync
 	enc.RangeLimit = c.RangeLimit
 	enc.TxLookupLimit = c.TxLookupLimit
@@ -145,64 +149,66 @@ func (c Config) MarshalTOML() (interface{}, error) {
 // UnmarshalTOML unmarshals from TOML.
 func (c *Config) UnmarshalTOML(unmarshal func(interface{}) error) error {
 	type Config struct {
-		Genesis                 *core.Genesis `toml:",omitempty"`
-		NetworkId               *uint64
-		SyncMode                *downloader.SyncMode
-		DisablePeerTxBroadcast  *bool
-		EthDiscoveryURLs        []string
-		SnapDiscoveryURLs       []string
-		TrustDiscoveryURLs      []string
-		NoPruning               *bool
-		NoPrefetch              *bool
-		DirectBroadcast         *bool
-		DisableSnapProtocol     *bool
-		DisableDiffProtocol     *bool
-		EnableTrustProtocol     *bool
-		DiffSync                *bool
-		RangeLimit              *bool
-		TxLookupLimit           *uint64                `toml:",omitempty"`
-		Whitelist               map[uint64]common.Hash `toml:"-"`
-		LightServ               *int                   `toml:",omitempty"`
-		LightIngress            *int                   `toml:",omitempty"`
-		LightEgress             *int                   `toml:",omitempty"`
-		LightPeers              *int                   `toml:",omitempty"`
-		LightNoPrune            *bool                  `toml:",omitempty"`
-		LightNoSyncServe        *bool                  `toml:",omitempty"`
-		SyncFromCheckpoint      *bool                  `toml:",omitempty"`
-		UltraLightServers       []string               `toml:",omitempty"`
-		UltraLightFraction      *int                   `toml:",omitempty"`
-		UltraLightOnlyAnnounce  *bool                  `toml:",omitempty"`
-		SkipBcVersionCheck      *bool                  `toml:"-"`
-		DatabaseHandles         *int                   `toml:"-"`
-		DatabaseCache           *int
-		DatabaseFreezer         *string
-		DatabaseDiff            *string
-		PersistDiff             *bool
-		DiffBlock               *uint64 `toml:",omitempty"`
-		PruneAncientData        *bool
-		TrieCleanCache          *int
-		TrieCleanCacheJournal   *string        `toml:",omitempty"`
-		TrieCleanCacheRejournal *time.Duration `toml:",omitempty"`
-		TrieDirtyCache          *int
-		TrieTimeout             *time.Duration
-		SnapshotCache           *int
-		TriesInMemory           *uint64
-		TriesVerifyMode         *core.VerifyMode
-		Preimages               *bool
-		Miner                   *miner.Config
-		Ethash                  *ethash.Config `toml:",omitempty"`
-		TxPool                  *core.TxPoolConfig
-		GPO                     *gasprice.Config
-		EnablePreimageRecording *bool
-		DocRoot                 *string `toml:"-"`
-		EWASMInterpreter        *string
-		EVMInterpreter          *string
-		RPCGasCap               *uint64
+		Genesis                         *core.Genesis `toml:",omitempty"`
+		NetworkId                       *uint64
+		SyncMode                        *downloader.SyncMode
+		DisablePeerTxBroadcast          *bool
+		EthDiscoveryURLs                []string
+		SnapDiscoveryURLs               []string
+		TrustDiscoveryURLs              []string
+		BscDiscoveryURLs               []string
+		NoPruning                       *bool
+		NoPrefetch                      *bool
+		DirectBroadcast                 *bool
+		DisableSnapProtocol             *bool
+		DisableDiffProtocol             *bool
+		EnableTrustProtocol             *bool
+		DisableBscProtocol             *bool
+		DiffSync                        *bool
+		RangeLimit                      *bool
+		TxLookupLimit                   *uint64                `toml:",omitempty"`
+		Whitelist                       map[uint64]common.Hash `toml:"-"`
+		LightServ                       *int                   `toml:",omitempty"`
+		LightIngress                    *int                   `toml:",omitempty"`
+		LightEgress                     *int                   `toml:",omitempty"`
+		LightPeers                      *int                   `toml:",omitempty"`
+		LightNoPrune                    *bool                  `toml:",omitempty"`
+		LightNoSyncServe                *bool                  `toml:",omitempty"`
+		SyncFromCheckpoint              *bool                  `toml:",omitempty"`
+		UltraLightServers               []string               `toml:",omitempty"`
+		UltraLightFraction              *int                   `toml:",omitempty"`
+		UltraLightOnlyAnnounce          *bool                  `toml:",omitempty"`
+		SkipBcVersionCheck              *bool                  `toml:"-"`
+		DatabaseHandles                 *int                   `toml:"-"`
+		DatabaseCache                   *int
+		DatabaseFreezer                 *string
+		DatabaseDiff                    *string
+		PersistDiff                     *bool
+		DiffBlock                       *uint64 `toml:",omitempty"`
+		PruneAncientData                *bool
+		TrieCleanCache                  *int
+		TrieCleanCacheJournal           *string        `toml:",omitempty"`
+		TrieCleanCacheRejournal         *time.Duration `toml:",omitempty"`
+		TrieDirtyCache                  *int
+		TrieTimeout                     *time.Duration
+		SnapshotCache                   *int
+		TriesInMemory                   *uint64
+		TriesVerifyMode                 *core.VerifyMode
+		Preimages                       *bool
+		Miner                           *miner.Config
+		Ethash                          *ethash.Config `toml:",omitempty"`
+		TxPool                          *core.TxPoolConfig
+		GPO                             *gasprice.Config
+		EnablePreimageRecording         *bool
+		DocRoot                         *string `toml:"-"`
+		EWASMInterpreter                *string
+		EVMInterpreter                  *string
+		RPCGasCap                       *uint64
 		RPCEVMTimeout                   *time.Duration
-		RPCTxFeeCap             *float64
-		Checkpoint              *params.TrustedCheckpoint      `toml:",omitempty"`
-		CheckpointOracle        *params.CheckpointOracleConfig `toml:",omitempty"`
-		OverrideBerlin          *big.Int                       `toml:",omitempty"`
+		RPCTxFeeCap                     *float64
+		Checkpoint                      *params.TrustedCheckpoint      `toml:",omitempty"`
+		CheckpointOracle                *params.CheckpointOracleConfig `toml:",omitempty"`
+		OverrideBerlin                  *big.Int                       `toml:",omitempty"`
 		OverrideArrowGlacier            *big.Int                       `toml:",omitempty"`
 		OverrideTerminalTotalDifficulty *big.Int                       `toml:",omitempty"`
 	}
@@ -231,6 +237,9 @@ func (c *Config) UnmarshalTOML(unmarshal func(interface{}) error) error {
 	if dec.TrustDiscoveryURLs != nil {
 		c.TrustDiscoveryURLs = dec.TrustDiscoveryURLs
 	}
+	if dec.BscDiscoveryURLs != nil {
+		c.BscDiscoveryURLs = dec.BscDiscoveryURLs
+	}
 	if dec.NoPruning != nil {
 		c.NoPruning = *dec.NoPruning
 	}
@@ -246,6 +255,9 @@ func (c *Config) UnmarshalTOML(unmarshal func(interface{}) error) error {
 	if dec.EnableTrustProtocol != nil {
 		c.EnableTrustProtocol = *dec.EnableTrustProtocol
 	}
+	if dec.DisableBscProtocol != nil {
+		c.DisableBscProtocol = *dec.DisableBscProtocol
+	}
 	if dec.DiffSync != nil {
 		c.DiffSync = *dec.DiffSync
 	}
diff --git a/eth/fetcher/tx_fetcher.go b/eth/fetcher/tx_fetcher.go
index 6cdb5b8804..20eaada986 100644
--- a/eth/fetcher/tx_fetcher.go
+++ b/eth/fetcher/tx_fetcher.go
@@ -261,7 +261,7 @@ func (f *TxFetcher) Notify(peer string, hashes []common.Hash) error {
 // Enqueue imports a batch of received transaction into the transaction pool
 // and the fetcher. This method may be called by both transaction broadcasts and
 // direct request replies. The differentiation is important so the fetcher can
-// re-shedule missing transactions as soon as possible.
+// re-schedule missing transactions as soon as possible.
 func (f *TxFetcher) Enqueue(peer string, txs []*types.Transaction, direct bool) error {
 	// Keep track of all the propagated transactions
 	if direct {
diff --git a/eth/filters/api.go b/eth/filters/api.go
index 56ee044274..0cacd2cf39 100644
--- a/eth/filters/api.go
+++ b/eth/filters/api.go
@@ -171,6 +171,68 @@ func (api *PublicFilterAPI) NewPendingTransactions(ctx context.Context) (*rpc.Su
 	return rpcSub, nil
 }
 
+// NewVotesFilter creates a filter that fetches votes that entered the vote pool.
+// It is part of the filter package since polling goes with eth_getFilterChanges.
+func (api *PublicFilterAPI) NewVotesFilter() rpc.ID {
+	var (
+		votes   = make(chan *types.VoteEnvelope)
+		voteSub = api.events.SubscribeNewVotes(votes)
+	)
+	api.filtersMu.Lock()
+	api.filters[voteSub.ID] = &filter{typ: VotesSubscription, deadline: time.NewTimer(api.timeout), hashes: make([]common.Hash, 0), s: voteSub}
+	api.filtersMu.Unlock()
+
+	gopool.Submit(func() {
+		for {
+			select {
+			case vote := <-votes:
+				api.filtersMu.Lock()
+				if f, found := api.filters[voteSub.ID]; found {
+					f.hashes = append(f.hashes, vote.Hash())
+				}
+				api.filtersMu.Unlock()
+			case <-voteSub.Err():
+				api.filtersMu.Lock()
+				delete(api.filters, voteSub.ID)
+				api.filtersMu.Unlock()
+				return
+			}
+		}
+	})
+
+	return voteSub.ID
+}
+
+// NewVotes creates a subscription that is triggered each time a vote enters the vote pool.
+func (api *PublicFilterAPI) NewVotes(ctx context.Context) (*rpc.Subscription, error) {
+	notifier, supported := rpc.NotifierFromContext(ctx)
+	if !supported {
+		return &rpc.Subscription{}, rpc.ErrNotificationsUnsupported
+	}
+
+	rpcSub := notifier.CreateSubscription()
+
+	gopool.Submit(func() {
+		votes := make(chan *types.VoteEnvelope, 128)
+		voteSub := api.events.SubscribeNewVotes(votes)
+
+		for {
+			select {
+			case vote := <-votes:
+				notifier.Notify(rpcSub.ID, vote)
+			case <-rpcSub.Err():
+				voteSub.Unsubscribe()
+				return
+			case <-notifier.Closed():
+				voteSub.Unsubscribe()
+				return
+			}
+		}
+	})
+
+	return rpcSub, nil
+}
+
 // NewBlockFilter creates a filter that fetches blocks that are imported into the chain.
 // It is part of the filter package since polling goes with eth_getFilterChanges.
 //
@@ -236,6 +298,68 @@ func (api *PublicFilterAPI) NewHeads(ctx context.Context) (*rpc.Subscription, er
 	return rpcSub, nil
 }
 
+// NewFinalizedHeaderFilter creates a filter that fetches finalized headers that are reached.
+func (api *PublicFilterAPI) NewFinalizedHeaderFilter() rpc.ID {
+	var (
+		headers   = make(chan *types.Header)
+		headerSub = api.events.SubscribeNewFinalizedHeaders(headers)
+	)
+
+	api.filtersMu.Lock()
+	api.filters[headerSub.ID] = &filter{typ: FinalizedHeadersSubscription, deadline: time.NewTimer(api.timeout), hashes: make([]common.Hash, 0), s: headerSub}
+	api.filtersMu.Unlock()
+
+	gopool.Submit(func() {
+		for {
+			select {
+			case h := <-headers:
+				api.filtersMu.Lock()
+				if f, found := api.filters[headerSub.ID]; found {
+					f.hashes = append(f.hashes, h.Hash())
+				}
+				api.filtersMu.Unlock()
+			case <-headerSub.Err():
+				api.filtersMu.Lock()
+				delete(api.filters, headerSub.ID)
+				api.filtersMu.Unlock()
+				return
+			}
+		}
+	})
+
+	return headerSub.ID
+}
+
+// NewFinalizedHeaders send a notification each time a new finalized header is reached.
+func (api *PublicFilterAPI) NewFinalizedHeaders(ctx context.Context) (*rpc.Subscription, error) {
+	notifier, supported := rpc.NotifierFromContext(ctx)
+	if !supported {
+		return &rpc.Subscription{}, rpc.ErrNotificationsUnsupported
+	}
+
+	rpcSub := notifier.CreateSubscription()
+
+	gopool.Submit(func() {
+		headers := make(chan *types.Header)
+		headersSub := api.events.SubscribeNewFinalizedHeaders(headers)
+
+		for {
+			select {
+			case h := <-headers:
+				notifier.Notify(rpcSub.ID, h)
+			case <-rpcSub.Err():
+				headersSub.Unsubscribe()
+				return
+			case <-notifier.Closed():
+				headersSub.Unsubscribe()
+				return
+			}
+		}
+	})
+
+	return rpcSub, nil
+}
+
 // Logs creates a subscription that fires for all new log that match the given filter criteria.
 func (api *PublicFilterAPI) Logs(ctx context.Context, crit FilterCriteria) (*rpc.Subscription, error) {
 	notifier, supported := rpc.NotifierFromContext(ctx)
@@ -427,7 +551,7 @@ func (api *PublicFilterAPI) GetFilterChanges(id rpc.ID) (interface{}, error) {
 		f.deadline.Reset(api.timeout)
 
 		switch f.typ {
-		case PendingTransactionsSubscription, BlocksSubscription:
+		case PendingTransactionsSubscription, BlocksSubscription, VotesSubscription:
 			hashes := f.hashes
 			f.hashes = nil
 			return returnHashes(hashes), nil
diff --git a/eth/filters/filter.go b/eth/filters/filter.go
index 2762993dad..40668cb2ee 100644
--- a/eth/filters/filter.go
+++ b/eth/filters/filter.go
@@ -19,7 +19,6 @@ package filters
 import (
 	"context"
 	"errors"
-	"fmt"
 	"math/big"
 
 	"github.com/ethereum/go-ethereum/common"
@@ -43,9 +42,11 @@ type Backend interface {
 
 	SubscribeNewTxsEvent(chan<- core.NewTxsEvent) event.Subscription
 	SubscribeChainEvent(ch chan<- core.ChainEvent) event.Subscription
+	SubscribeFinalizedHeaderEvent(ch chan<- core.FinalizedHeaderEvent) event.Subscription
 	SubscribeRemovedLogsEvent(ch chan<- core.RemovedLogsEvent) event.Subscription
 	SubscribeLogsEvent(ch chan<- []*types.Log) event.Subscription
 	SubscribePendingLogsEvent(ch chan<- []*types.Log) event.Subscription
+	SubscribeNewVoteEvent(chan<- core.NewVoteEvent) event.Subscription
 
 	BloomStatus() (uint64, uint64)
 	ServiceFilter(ctx context.Context, session *bloombits.MatcherSession)
@@ -148,23 +149,44 @@ func (f *Filter) Logs(ctx context.Context) ([]*types.Log, error) {
 		return nil, nil
 	}
 	var (
-		head    = header.Number.Uint64()
-		end     = uint64(f.end)
+		err     error
+		head    = header.Number.Int64()
 		pending = f.end == rpc.PendingBlockNumber.Int64()
 	)
-	if f.begin == rpc.LatestBlockNumber.Int64() {
-		f.begin = int64(head)
+	resolveSpecial := func(number int64) (int64, error) {
+		var hdr *types.Header
+		switch number {
+		case rpc.LatestBlockNumber.Int64():
+			return head, nil
+		case rpc.PendingBlockNumber.Int64():
+			// we should return head here since we've already captured
+			// that we need to get the pending logs in the pending boolean above
+			return head, nil
+		case rpc.FinalizedBlockNumber.Int64():
+			hdr, _ = f.backend.HeaderByNumber(ctx, rpc.FinalizedBlockNumber)
+			if hdr == nil {
+				return 0, errors.New("finalized header not found")
+			}
+		case rpc.SafeBlockNumber.Int64():
+			hdr, _ = f.backend.HeaderByNumber(ctx, rpc.SafeBlockNumber)
+			if hdr == nil {
+				return 0, errors.New("safe header not found")
+			}
+		default:
+			return number, nil
+		}
+		return hdr.Number.Int64(), nil
 	}
-	if f.end == rpc.LatestBlockNumber.Int64() || f.end == rpc.PendingBlockNumber.Int64() {
-		end = head
+	if f.begin, err = resolveSpecial(f.begin); err != nil {
+		return nil, err
 	}
-	if f.rangeLimit && (int64(end)-f.begin) > maxFilterBlockRange {
-		return nil, fmt.Errorf("exceed maximum block range: %d", maxFilterBlockRange)
+	if f.end, err = resolveSpecial(f.end); err != nil {
+		return nil, err
 	}
 	// Gather all indexed logs, and finish with non indexed ones
 	var (
 		logs           []*types.Log
-		err            error
+		end            = uint64(f.end)
 		size, sections = f.backend.BloomStatus()
 	)
 	if indexed := sections * size; indexed > uint64(f.begin) {
diff --git a/eth/filters/filter_system.go b/eth/filters/filter_system.go
index 12f037d0f9..bf461a1c5c 100644
--- a/eth/filters/filter_system.go
+++ b/eth/filters/filter_system.go
@@ -52,7 +52,11 @@ const (
 	PendingTransactionsSubscription
 	// BlocksSubscription queries hashes for blocks that are imported
 	BlocksSubscription
-	// LastSubscription keeps track of the last index
+	// VotesSubscription queries vote hashes for votes entering the vote pool
+	VotesSubscription
+	// FinalizedHeadersSubscription queries hashes for finalized headers that are reached
+	FinalizedHeadersSubscription
+	// LastIndexSubscription keeps track of the last index
 	LastIndexSubscription
 )
 
@@ -66,18 +70,25 @@ const (
 	logsChanSize = 10
 	// chainEvChanSize is the size of channel listening to ChainEvent.
 	chainEvChanSize = 10
+	// finalizedHeaderEvChanSize is the size of channel listening to FinalizedHeaderEvent.
+	finalizedHeaderEvChanSize = 10
+	// voteChanSize is the size of channel listening to NewVoteEvent.
+	// The number is referenced from the size of vote pool.
+	voteChanSize = 256
 )
 
 type subscription struct {
-	id        rpc.ID
-	typ       Type
-	created   time.Time
-	logsCrit  ethereum.FilterQuery
-	logs      chan []*types.Log
-	hashes    chan []common.Hash
-	headers   chan *types.Header
-	installed chan struct{} // closed when the filter is installed
-	err       chan error    // closed when the filter is uninstalled
+	id               rpc.ID
+	typ              Type
+	created          time.Time
+	logsCrit         ethereum.FilterQuery
+	logs             chan []*types.Log
+	hashes           chan []common.Hash
+	headers          chan *types.Header
+	finalizedHeaders chan *types.Header
+	votes            chan *types.VoteEnvelope
+	installed        chan struct{} // closed when the filter is installed
+	err              chan error    // closed when the filter is uninstalled
 }
 
 // EventSystem creates subscriptions, processes events and broadcasts them to the
@@ -88,20 +99,24 @@ type EventSystem struct {
 	lastHead  *types.Header
 
 	// Subscriptions
-	txsSub         event.Subscription // Subscription for new transaction event
-	logsSub        event.Subscription // Subscription for new log event
-	rmLogsSub      event.Subscription // Subscription for removed log event
-	pendingLogsSub event.Subscription // Subscription for pending log event
-	chainSub       event.Subscription // Subscription for new chain event
+	txsSub             event.Subscription // Subscription for new transaction event
+	logsSub            event.Subscription // Subscription for new log event
+	rmLogsSub          event.Subscription // Subscription for removed log event
+	pendingLogsSub     event.Subscription // Subscription for pending log event
+	chainSub           event.Subscription // Subscription for new chain event
+	finalizedHeaderSub event.Subscription // Subscription for new finalized header
+	voteSub            event.Subscription // Subscription for new vote event
 
 	// Channels
-	install       chan *subscription         // install filter for event notification
-	uninstall     chan *subscription         // remove filter for event notification
-	txsCh         chan core.NewTxsEvent      // Channel to receive new transactions event
-	logsCh        chan []*types.Log          // Channel to receive new log event
-	pendingLogsCh chan []*types.Log          // Channel to receive new log event
-	rmLogsCh      chan core.RemovedLogsEvent // Channel to receive removed log event
-	chainCh       chan core.ChainEvent       // Channel to receive new chain event
+	install           chan *subscription             // install filter for event notification
+	uninstall         chan *subscription             // remove filter for event notification
+	txsCh             chan core.NewTxsEvent          // Channel to receive new transactions event
+	logsCh            chan []*types.Log              // Channel to receive new log event
+	pendingLogsCh     chan []*types.Log              // Channel to receive new log event
+	rmLogsCh          chan core.RemovedLogsEvent     // Channel to receive removed log event
+	chainCh           chan core.ChainEvent           // Channel to receive new chain event
+	finalizedHeaderCh chan core.FinalizedHeaderEvent // Channel to receive new finalized header event
+	voteCh            chan core.NewVoteEvent         // Channel to receive new vote event
 }
 
 // NewEventSystem creates a new manager that listens for event on the given mux,
@@ -112,15 +127,17 @@ type EventSystem struct {
 // or by stopping the given mux.
 func NewEventSystem(backend Backend, lightMode bool) *EventSystem {
 	m := &EventSystem{
-		backend:       backend,
-		lightMode:     lightMode,
-		install:       make(chan *subscription),
-		uninstall:     make(chan *subscription),
-		txsCh:         make(chan core.NewTxsEvent, txChanSize),
-		logsCh:        make(chan []*types.Log, logsChanSize),
-		rmLogsCh:      make(chan core.RemovedLogsEvent, rmLogsChanSize),
-		pendingLogsCh: make(chan []*types.Log, logsChanSize),
-		chainCh:       make(chan core.ChainEvent, chainEvChanSize),
+		backend:           backend,
+		lightMode:         lightMode,
+		install:           make(chan *subscription),
+		uninstall:         make(chan *subscription),
+		txsCh:             make(chan core.NewTxsEvent, txChanSize),
+		logsCh:            make(chan []*types.Log, logsChanSize),
+		rmLogsCh:          make(chan core.RemovedLogsEvent, rmLogsChanSize),
+		pendingLogsCh:     make(chan []*types.Log, logsChanSize),
+		chainCh:           make(chan core.ChainEvent, chainEvChanSize),
+		finalizedHeaderCh: make(chan core.FinalizedHeaderEvent, finalizedHeaderEvChanSize),
+		voteCh:            make(chan core.NewVoteEvent, voteChanSize),
 	}
 
 	// Subscribe events
@@ -129,11 +146,16 @@ func NewEventSystem(backend Backend, lightMode bool) *EventSystem {
 	m.rmLogsSub = m.backend.SubscribeRemovedLogsEvent(m.rmLogsCh)
 	m.chainSub = m.backend.SubscribeChainEvent(m.chainCh)
 	m.pendingLogsSub = m.backend.SubscribePendingLogsEvent(m.pendingLogsCh)
+	m.finalizedHeaderSub = m.backend.SubscribeFinalizedHeaderEvent(m.finalizedHeaderCh)
+	m.voteSub = m.backend.SubscribeNewVoteEvent(m.voteCh)
 
 	// Make sure none of the subscriptions are empty
 	if m.txsSub == nil || m.logsSub == nil || m.rmLogsSub == nil || m.chainSub == nil || m.pendingLogsSub == nil {
 		log.Crit("Subscribe for event system failed")
 	}
+	if m.voteSub == nil || m.finalizedHeaderSub == nil {
+		log.Warn("Subscribe for vote or finalized header event failed")
+	}
 
 	go m.eventLoop()
 	return m
@@ -167,6 +189,7 @@ func (sub *Subscription) Unsubscribe() {
 			case <-sub.f.logs:
 			case <-sub.f.hashes:
 			case <-sub.f.headers:
+			case <-sub.f.votes:
 			}
 		}
 
@@ -234,6 +257,7 @@ func (es *EventSystem) subscribeMinedPendingLogs(crit ethereum.FilterQuery, logs
 		logs:      logs,
 		hashes:    make(chan []common.Hash),
 		headers:   make(chan *types.Header),
+		votes:     make(chan *types.VoteEnvelope),
 		installed: make(chan struct{}),
 		err:       make(chan error),
 	}
@@ -251,6 +275,7 @@ func (es *EventSystem) subscribeLogs(crit ethereum.FilterQuery, logs chan []*typ
 		logs:      logs,
 		hashes:    make(chan []common.Hash),
 		headers:   make(chan *types.Header),
+		votes:     make(chan *types.VoteEnvelope),
 		installed: make(chan struct{}),
 		err:       make(chan error),
 	}
@@ -268,6 +293,7 @@ func (es *EventSystem) subscribePendingLogs(crit ethereum.FilterQuery, logs chan
 		logs:      logs,
 		hashes:    make(chan []common.Hash),
 		headers:   make(chan *types.Header),
+		votes:     make(chan *types.VoteEnvelope),
 		installed: make(chan struct{}),
 		err:       make(chan error),
 	}
@@ -284,6 +310,24 @@ func (es *EventSystem) SubscribeNewHeads(headers chan *types.Header) *Subscripti
 		logs:      make(chan []*types.Log),
 		hashes:    make(chan []common.Hash),
 		headers:   headers,
+		votes:     make(chan *types.VoteEnvelope),
+		installed: make(chan struct{}),
+		err:       make(chan error),
+	}
+	return es.subscribe(sub)
+}
+
+// SubscribeNewFinalizedHeaders creates a subscription that writes the finalized header of a block that is
+// reached recently.
+func (es *EventSystem) SubscribeNewFinalizedHeaders(headers chan *types.Header) *Subscription {
+	sub := &subscription{
+		id:        rpc.NewID(),
+		typ:       FinalizedHeadersSubscription,
+		created:   time.Now(),
+		logs:      make(chan []*types.Log),
+		hashes:    make(chan []common.Hash),
+		headers:   headers,
+		votes:     make(chan *types.VoteEnvelope),
 		installed: make(chan struct{}),
 		err:       make(chan error),
 	}
@@ -300,6 +344,24 @@ func (es *EventSystem) SubscribePendingTxs(hashes chan []common.Hash) *Subscript
 		logs:      make(chan []*types.Log),
 		hashes:    hashes,
 		headers:   make(chan *types.Header),
+		votes:     make(chan *types.VoteEnvelope),
+		installed: make(chan struct{}),
+		err:       make(chan error),
+	}
+	return es.subscribe(sub)
+}
+
+// SubscribeNewVotes creates a subscription that writes transaction hashes for
+// transactions that enter the transaction pool.
+func (es *EventSystem) SubscribeNewVotes(votes chan *types.VoteEnvelope) *Subscription {
+	sub := &subscription{
+		id:        rpc.NewID(),
+		typ:       VotesSubscription,
+		created:   time.Now(),
+		logs:      make(chan []*types.Log),
+		hashes:    make(chan []common.Hash),
+		headers:   make(chan *types.Header),
+		votes:     votes,
 		installed: make(chan struct{}),
 		err:       make(chan error),
 	}
@@ -351,6 +413,12 @@ func (es *EventSystem) handleTxsEvent(filters filterIndex, ev core.NewTxsEvent)
 	}
 }
 
+func (es *EventSystem) handleVoteEvent(filters filterIndex, ev core.NewVoteEvent) {
+	for _, f := range filters[VotesSubscription] {
+		f.votes <- ev.Vote
+	}
+}
+
 func (es *EventSystem) handleChainEvent(filters filterIndex, ev core.ChainEvent) {
 	for _, f := range filters[BlocksSubscription] {
 		f.headers <- ev.Block.Header()
@@ -366,6 +434,12 @@ func (es *EventSystem) handleChainEvent(filters filterIndex, ev core.ChainEvent)
 	}
 }
 
+func (es *EventSystem) handleFinalizedHeaderEvent(filters filterIndex, ev core.FinalizedHeaderEvent) {
+	for _, f := range filters[FinalizedHeadersSubscription] {
+		f.headers <- ev.Header
+	}
+}
+
 func (es *EventSystem) lightFilterNewHead(newHeader *types.Header, callBack func(*types.Header, bool)) {
 	oldh := es.lastHead
 	es.lastHead = newHeader
@@ -448,6 +522,10 @@ func (es *EventSystem) eventLoop() {
 		es.rmLogsSub.Unsubscribe()
 		es.pendingLogsSub.Unsubscribe()
 		es.chainSub.Unsubscribe()
+		es.finalizedHeaderSub.Unsubscribe()
+		if es.voteSub != nil {
+			es.voteSub.Unsubscribe()
+		}
 	}()
 
 	index := make(filterIndex)
@@ -455,6 +533,10 @@ func (es *EventSystem) eventLoop() {
 		index[i] = make(map[rpc.ID]*subscription)
 	}
 
+	var voteSubErr <-chan error
+	if es.voteSub != nil {
+		voteSubErr = es.voteSub.Err()
+	}
 	for {
 		select {
 		case ev := <-es.txsCh:
@@ -467,6 +549,10 @@ func (es *EventSystem) eventLoop() {
 			es.handlePendingLogs(index, ev)
 		case ev := <-es.chainCh:
 			es.handleChainEvent(index, ev)
+		case ev := <-es.finalizedHeaderCh:
+			es.handleFinalizedHeaderEvent(index, ev)
+		case ev := <-es.voteCh:
+			es.handleVoteEvent(index, ev)
 
 		case f := <-es.install:
 			if f.typ == MinedAndPendingLogsSubscription {
@@ -497,6 +583,10 @@ func (es *EventSystem) eventLoop() {
 			return
 		case <-es.chainSub.Err():
 			return
+		case <-es.finalizedHeaderSub.Err():
+			return
+		case <-voteSubErr:
+			return
 		}
 	}
 }
diff --git a/eth/filters/filter_system_test.go b/eth/filters/filter_system_test.go
index 7435a19e86..737eaa17c7 100644
--- a/eth/filters/filter_system_test.go
+++ b/eth/filters/filter_system_test.go
@@ -18,6 +18,7 @@ package filters
 
 import (
 	"context"
+	"errors"
 	"fmt"
 	"math/big"
 	"math/rand"
@@ -44,14 +45,16 @@ var (
 )
 
 type testBackend struct {
-	mux             *event.TypeMux
-	db              ethdb.Database
-	sections        uint64
-	txFeed          event.Feed
-	logsFeed        event.Feed
-	rmLogsFeed      event.Feed
-	pendingLogsFeed event.Feed
-	chainFeed       event.Feed
+	mux                 *event.TypeMux
+	db                  ethdb.Database
+	sections            uint64
+	txFeed              event.Feed
+	logsFeed            event.Feed
+	rmLogsFeed          event.Feed
+	pendingLogsFeed     event.Feed
+	chainFeed           event.Feed
+	finalizedHeaderFeed event.Feed
+	voteFeed            event.Feed
 }
 
 func (b *testBackend) ChainDb() ethdb.Database {
@@ -63,14 +66,19 @@ func (b *testBackend) HeaderByNumber(ctx context.Context, blockNr rpc.BlockNumbe
 		hash common.Hash
 		num  uint64
 	)
-	if blockNr == rpc.LatestBlockNumber {
+	switch blockNr {
+	case rpc.LatestBlockNumber:
 		hash = rawdb.ReadHeadBlockHash(b.db)
 		number := rawdb.ReadHeaderNumber(b.db, hash)
 		if number == nil {
 			return nil, nil
 		}
 		num = *number
-	} else {
+	case rpc.FinalizedBlockNumber:
+		return nil, errors.New("finalized block not found")
+	case rpc.SafeBlockNumber:
+		return nil, errors.New("safe block not found")
+	default:
 		num = uint64(blockNr)
 		hash = rawdb.ReadCanonicalHash(b.db, num)
 	}
@@ -130,6 +138,14 @@ func (b *testBackend) SubscribeChainEvent(ch chan<- core.ChainEvent) event.Subsc
 	return b.chainFeed.Subscribe(ch)
 }
 
+func (b *testBackend) SubscribeFinalizedHeaderEvent(ch chan<- core.FinalizedHeaderEvent) event.Subscription {
+	return b.finalizedHeaderFeed.Subscribe(ch)
+}
+
+func (b *testBackend) SubscribeNewVoteEvent(ch chan<- core.NewVoteEvent) event.Subscription {
+	return b.voteFeed.Subscribe(ch)
+}
+
 func (b *testBackend) BloomStatus() (uint64, uint64) {
 	return params.BloomBitsBlocks, b.sections
 }
@@ -735,3 +751,79 @@ func flattenLogs(pl [][]*types.Log) []*types.Log {
 	}
 	return logs
 }
+
+func TestVoteSubscription(t *testing.T) {
+	t.Parallel()
+
+	var (
+		db      = rawdb.NewMemoryDatabase()
+		backend = &testBackend{db: db}
+		api     = NewPublicFilterAPI(backend, false, deadline, false)
+		votes   = []*types.VoteEnvelope{
+			&types.VoteEnvelope{
+				VoteAddress: types.BLSPublicKey{},
+				Signature:   types.BLSSignature{},
+				Data: &types.VoteData{
+					SourceNumber: uint64(0),
+					SourceHash:   common.BytesToHash(common.Hex2Bytes(string(rune(0)))),
+					TargetNumber: uint64(1),
+					TargetHash:   common.BytesToHash(common.Hex2Bytes(string(rune(1)))),
+				},
+			},
+			&types.VoteEnvelope{
+				VoteAddress: types.BLSPublicKey{},
+				Signature:   types.BLSSignature{},
+				Data: &types.VoteData{
+					SourceNumber: uint64(0),
+					SourceHash:   common.BytesToHash(common.Hex2Bytes(string(rune(0)))),
+					TargetNumber: uint64(2),
+					TargetHash:   common.BytesToHash(common.Hex2Bytes(string(rune(2)))),
+				},
+			},
+			&types.VoteEnvelope{
+				VoteAddress: types.BLSPublicKey{},
+				Signature:   types.BLSSignature{},
+				Data: &types.VoteData{
+					SourceNumber: uint64(0),
+					SourceHash:   common.BytesToHash(common.Hex2Bytes(string(rune(0)))),
+					TargetNumber: uint64(3),
+					TargetHash:   common.BytesToHash(common.Hex2Bytes(string(rune(3)))),
+				},
+			},
+			&types.VoteEnvelope{
+				VoteAddress: types.BLSPublicKey{},
+				Signature:   types.BLSSignature{},
+				Data: &types.VoteData{
+					SourceNumber: uint64(0),
+					SourceHash:   common.BytesToHash(common.Hex2Bytes(string(rune(0)))),
+					TargetNumber: uint64(4),
+					TargetHash:   common.BytesToHash(common.Hex2Bytes(string(rune(4)))),
+				},
+			},
+		}
+	)
+
+	chan0 := make(chan *types.VoteEnvelope)
+	sub0 := api.events.SubscribeNewVotes(chan0)
+
+	go func() { // simulate client
+		i := 0
+		for i != len(votes) {
+			vote := <-chan0
+			if votes[i].Hash() != vote.Hash() {
+				t.Errorf("sub received invalid hash on index %d, want %x, got %x", i, votes[i].Hash(), vote.Hash())
+			}
+			i++
+		}
+
+		sub0.Unsubscribe()
+	}()
+
+	time.Sleep(1 * time.Second)
+	for _, v := range votes {
+		ev := core.NewVoteEvent{Vote: v}
+		backend.voteFeed.Send(ev)
+	}
+
+	<-sub0.Err()
+}
diff --git a/eth/gasprice/feehistory.go b/eth/gasprice/feehistory.go
index 78bade5ae8..ae7d0069a1 100644
--- a/eth/gasprice/feehistory.go
+++ b/eth/gasprice/feehistory.go
@@ -137,44 +137,68 @@ func (oracle *Oracle) processBlock(bf *blockFees, percentiles []float64) {
 // also returned if requested and available.
 // Note: an error is only returned if retrieving the head header has failed. If there are no
 // retrievable blocks in the specified range then zero block count is returned with no error.
-func (oracle *Oracle) resolveBlockRange(ctx context.Context, lastBlock rpc.BlockNumber, blocks int) (*types.Block, []*types.Receipt, uint64, int, error) {
+func (oracle *Oracle) resolveBlockRange(ctx context.Context, reqEnd rpc.BlockNumber, blocks int) (*types.Block, []*types.Receipt, uint64, int, error) {
 	var (
-		headBlock       rpc.BlockNumber
+		headBlock       *types.Header
 		pendingBlock    *types.Block
 		pendingReceipts types.Receipts
+		err             error
 	)
-	// query either pending block or head header and set headBlock
-	if lastBlock == rpc.PendingBlockNumber {
-		if pendingBlock, pendingReceipts = oracle.backend.PendingBlockAndReceipts(); pendingBlock != nil {
-			lastBlock = rpc.BlockNumber(pendingBlock.NumberU64())
-			headBlock = lastBlock - 1
-		} else {
-			// pending block not supported by backend, process until latest block
-			lastBlock = rpc.LatestBlockNumber
-			blocks--
-			if blocks == 0 {
-				return nil, nil, 0, 0, nil
+
+	// Get the chain's current head.
+	if headBlock, err = oracle.backend.HeaderByNumber(ctx, rpc.LatestBlockNumber); err != nil {
+		return nil, nil, 0, 0, err
+	}
+	head := rpc.BlockNumber(headBlock.Number.Uint64())
+
+	// Fail if request block is beyond the chain's current head.
+	if head < reqEnd {
+		return nil, nil, 0, 0, fmt.Errorf("%w: requested %d, head %d", errRequestBeyondHead, reqEnd, head)
+	}
+
+	// Resolve block tag.
+	if reqEnd < 0 {
+		var (
+			resolved *types.Header
+			err      error
+		)
+		switch reqEnd {
+		case rpc.PendingBlockNumber:
+			if pendingBlock, pendingReceipts = oracle.backend.PendingBlockAndReceipts(); pendingBlock != nil {
+				resolved = pendingBlock.Header()
+			} else {
+				// Pending block not supported by backend, process only until latest block.
+				resolved = headBlock
+
+				// Update total blocks to return to account for this.
+				blocks--
 			}
+		case rpc.LatestBlockNumber:
+			// Retrieved above.
+			resolved = headBlock
+		case rpc.SafeBlockNumber:
+			resolved, err = oracle.backend.HeaderByNumber(ctx, rpc.SafeBlockNumber)
+		case rpc.FinalizedBlockNumber:
+			resolved, err = oracle.backend.HeaderByNumber(ctx, rpc.FinalizedBlockNumber)
+		case rpc.EarliestBlockNumber:
+			resolved, err = oracle.backend.HeaderByNumber(ctx, rpc.EarliestBlockNumber)
 		}
-	}
-	if pendingBlock == nil {
-		// if pending block is not fetched then we retrieve the head header to get the head block number
-		if latestHeader, err := oracle.backend.HeaderByNumber(ctx, rpc.LatestBlockNumber); err == nil && latestHeader != nil {
-			headBlock = rpc.BlockNumber(latestHeader.Number.Uint64())
-		} else {
+		if resolved == nil || err != nil {
 			return nil, nil, 0, 0, err
 		}
+		// Absolute number resolved.
+		reqEnd = rpc.BlockNumber(resolved.Number.Uint64())
 	}
-	if lastBlock == rpc.LatestBlockNumber {
-		lastBlock = headBlock
-	} else if pendingBlock == nil && lastBlock > headBlock {
-		return nil, nil, 0, 0, fmt.Errorf("%w: requested %d, head %d", errRequestBeyondHead, lastBlock, headBlock)
+
+	// If there are no blocks to return, short circuit.
+	if blocks == 0 {
+		return nil, nil, 0, 0, nil
 	}
-	// ensure not trying to retrieve before genesis
-	if rpc.BlockNumber(blocks) > lastBlock+1 {
-		blocks = int(lastBlock + 1)
+	// Ensure not trying to retrieve before genesis.
+	if uint64(reqEnd+1) < uint64(blocks) {
+		blocks = int(reqEnd + 1)
 	}
-	return pendingBlock, pendingReceipts, uint64(lastBlock), blocks, nil
+	return pendingBlock, pendingReceipts, uint64(reqEnd), blocks, nil
 }
 
 // FeeHistory returns data relevant for fee estimation based on the specified range of blocks.
diff --git a/eth/gasprice/feehistory_test.go b/eth/gasprice/feehistory_test.go
index c259eb0acf..25a685effc 100644
--- a/eth/gasprice/feehistory_test.go
+++ b/eth/gasprice/feehistory_test.go
@@ -50,6 +50,8 @@ func TestFeeHistory(t *testing.T) {
 		{false, 1000, 1000, 2, rpc.PendingBlockNumber, nil, 32, 1, nil},
 		{true, 1000, 1000, 2, rpc.PendingBlockNumber, nil, 32, 2, nil},
 		{true, 1000, 1000, 2, rpc.PendingBlockNumber, []float64{0, 10}, 32, 2, nil},
+		// {false, 1000, 1000, 2, rpc.FinalizedBlockNumber, []float64{0, 10}, 24, 2, nil},
+		// {false, 1000, 1000, 2, rpc.SafeBlockNumber, []float64{0, 10}, 24, 2, nil},
 	}
 	for i, c := range cases {
 		config := Config{
diff --git a/eth/gasprice/gasprice_test.go b/eth/gasprice/gasprice_test.go
index 01edde38ce..2820cc683d 100644
--- a/eth/gasprice/gasprice_test.go
+++ b/eth/gasprice/gasprice_test.go
@@ -18,6 +18,7 @@ package gasprice
 
 import (
 	"context"
+	"errors"
 	"math"
 	"math/big"
 	"testing"
@@ -45,6 +46,15 @@ func (b *testBackend) HeaderByNumber(ctx context.Context, number rpc.BlockNumber
 	if number > testHead {
 		return nil, nil
 	}
+	if number == rpc.EarliestBlockNumber {
+		number = 0
+	}
+	if number == rpc.FinalizedBlockNumber {
+		return b.chain.CurrentFinalBlock(), nil
+	}
+	if number == rpc.SafeBlockNumber {
+		return b.chain.CurrentSafeBlock(), nil
+	}
 	if number == rpc.LatestBlockNumber {
 		number = testHead
 	}
@@ -62,6 +72,23 @@ func (b *testBackend) BlockByNumber(ctx context.Context, number rpc.BlockNumber)
 	if number > testHead {
 		return nil, nil
 	}
+	if number == rpc.EarliestBlockNumber {
+		number = 0
+	}
+	if number == rpc.FinalizedBlockNumber {
+		header := b.chain.CurrentFinalBlock()
+		if header == nil {
+			return nil, errors.New("finalized block not found")
+		}
+		number = rpc.BlockNumber(header.Number.Uint64())
+	}
+	if number == rpc.SafeBlockNumber {
+		header := b.chain.CurrentSafeBlock()
+		if header == nil {
+			return nil, errors.New("safe block not found")
+		}
+		number = rpc.BlockNumber(header.Number.Uint64())
+	}
 	if number == rpc.LatestBlockNumber {
 		number = testHead
 	}
@@ -109,6 +136,8 @@ func newTestBackend(t *testing.T, londonBlock *big.Int, pending bool) *testBacke
 	config.LondonBlock = londonBlock
 	config.ArrowGlacierBlock = londonBlock
 	config.GibbsBlock = nil
+	config.LubanBlock = nil
+	config.PlatoBlock = nil
 	engine := ethash.NewFaker()
 	db := rawdb.NewMemoryDatabase()
 	genesis, err := gspec.Commit(db)
diff --git a/eth/handler.go b/eth/handler.go
index 96971beb44..92e2b78f10 100644
--- a/eth/handler.go
+++ b/eth/handler.go
@@ -33,6 +33,7 @@ import (
 	"github.com/ethereum/go-ethereum/core/types"
 	"github.com/ethereum/go-ethereum/eth/downloader"
 	"github.com/ethereum/go-ethereum/eth/fetcher"
+	"github.com/ethereum/go-ethereum/eth/protocols/bsc"
 	"github.com/ethereum/go-ethereum/eth/protocols/diff"
 	"github.com/ethereum/go-ethereum/eth/protocols/eth"
 	"github.com/ethereum/go-ethereum/eth/protocols/snap"
@@ -49,6 +50,12 @@ const (
 	// txChanSize is the size of channel listening to NewTxsEvent.
 	// The number is referenced from the size of tx pool.
 	txChanSize = 4096
+
+	// voteChanSize is the size of channel listening to NewVotesEvent.
+	voteChanSize = 256
+
+	// deltaTdThreshold is the threshold of TD difference for peers to broadcast votes.
+	deltaTdThreshold = 20
 )
 
 var (
@@ -82,12 +89,24 @@ type txPool interface {
 	SubscribeReannoTxsEvent(chan<- core.ReannoTxsEvent) event.Subscription
 }
 
+// votePool defines the methods needed from a votes pool implementation to
+// support all the operations needed by the Ethereum chain protocols.
+type votePool interface {
+	PutVote(vote *types.VoteEnvelope)
+	GetVotes() []*types.VoteEnvelope
+
+	// SubscribeNewVoteEvent should return an event subscription of
+	// NewVotesEvent and send events to the given channel.
+	SubscribeNewVoteEvent(ch chan<- core.NewVoteEvent) event.Subscription
+}
+
 // handlerConfig is the collection of initialization parameters to create a full
 // node network handler.
 type handlerConfig struct {
-	Database               ethdb.Database            // Database for direct sync insertions
-	Chain                  *core.BlockChain          // Blockchain to serve data from
-	TxPool                 txPool                    // Transaction pool to propagate from
+	Database               ethdb.Database   // Database for direct sync insertions
+	Chain                  *core.BlockChain // Blockchain to serve data from
+	TxPool                 txPool           // Transaction pool to propagate from
+	VotePool               votePool
 	Merger                 *consensus.Merger         // The manager for eth1/2 transition
 	Network                uint64                    // Network identifier to adfvertise
 	Sync                   downloader.SyncMode       // Whether to snap or full sync
@@ -116,6 +135,7 @@ type handler struct {
 
 	database ethdb.Database
 	txpool   txPool
+	votepool votePool
 	chain    *core.BlockChain
 	maxPeers int
 
@@ -131,6 +151,8 @@ type handler struct {
 	reannoTxsCh   chan core.ReannoTxsEvent
 	reannoTxsSub  event.Subscription
 	minedBlockSub *event.TypeMuxSubscription
+	voteCh        chan core.NewVoteEvent
+	votesSub      event.Subscription
 
 	whitelist map[uint64]common.Hash
 
@@ -158,6 +180,7 @@ func newHandler(config *handlerConfig) (*handler, error) {
 		eventMux:               config.EventMux,
 		database:               config.Database,
 		txpool:                 config.TxPool,
+		votepool:               config.VotePool,
 		chain:                  config.Chain,
 		peers:                  config.PeerSet,
 		merger:                 config.Merger,
@@ -306,7 +329,7 @@ func newHandler(config *handlerConfig) (*handler, error) {
 }
 
 // runEthPeer registers an eth peer into the joint eth/snap peerset, adds it to
-// various subsistems and starts handling messages.
+// various subsystems and starts handling messages.
 func (h *handler) runEthPeer(peer *eth.Peer, handler eth.Handler) error {
 	// If the peer has a `snap` extension, wait for it to connect so we can have
 	// a uniform initialization/teardown mechanism
@@ -325,6 +348,11 @@ func (h *handler) runEthPeer(peer *eth.Peer, handler eth.Handler) error {
 		peer.Log().Error("Trust extension barrier failed", "err", err)
 		return err
 	}
+	bsc, err := h.peers.waitBscExtension(peer)
+	if err != nil {
+		peer.Log().Error("Bsc extension barrier failed", "err", err)
+		return err
+	}
 	// TODO(karalabe): Not sure why this is needed
 	if !h.chainSync.handlePeerEvent(peer) {
 		return p2p.DiscQuitting
@@ -365,7 +393,7 @@ func (h *handler) runEthPeer(peer *eth.Peer, handler eth.Handler) error {
 	peer.Log().Debug("Ethereum peer connected", "name", peer.Name())
 
 	// Register the peer locally
-	if err := h.peers.registerPeer(peer, snap, diff, trust); err != nil {
+	if err := h.peers.registerPeer(peer, snap, diff, trust, bsc); err != nil {
 		peer.Log().Error("Ethereum peer registration failed", "err", err)
 		return err
 	}
@@ -388,9 +416,12 @@ func (h *handler) runEthPeer(peer *eth.Peer, handler eth.Handler) error {
 	}
 	h.chainSync.handlePeerEvent(peer)
 
-	// Propagate existing transactions. new transactions appearing
+	// Propagate existing transactions and votes. new transactions and votes appearing
 	// after this will be sent via broadcasts.
 	h.syncTransactions(peer)
+	if h.votepool != nil && p.bscExt != nil {
+		h.syncVotes(p.bscExt)
+	}
 
 	// Create a notification channel for pending requests if the peer goes down
 	dead := make(chan struct{})
@@ -540,6 +571,21 @@ func (h *handler) runTrustExtension(peer *trust.Peer, handler trust.Handler) err
 	return handler(peer)
 }
 
+// runBscExtension registers a `bsc` peer into the joint eth/bsc peerset and
+// starts handling inbound messages. As `bsc` is only a satellite protocol to
+// `eth`, all subsystem registrations and lifecycle management will be done by
+// the main `eth` handler to prevent strange races.
+func (h *handler) runBscExtension(peer *bsc.Peer, handler bsc.Handler) error {
+	h.peerWG.Add(1)
+	defer h.peerWG.Done()
+
+	if err := h.peers.registerBscExtension(peer); err != nil {
+		peer.Log().Error("Bsc extension registration failed", "err", err)
+		return err
+	}
+	return handler(peer)
+}
+
 // removePeer requests disconnection of a peer.
 func (h *handler) removePeer(id string) {
 	peer := h.peers.peer(id)
@@ -589,6 +635,14 @@ func (h *handler) Start(maxPeers int) {
 	h.txsSub = h.txpool.SubscribeNewTxsEvent(h.txsCh)
 	go h.txBroadcastLoop()
 
+	// broadcast votes
+	if h.votepool != nil {
+		h.wg.Add(1)
+		h.voteCh = make(chan core.NewVoteEvent, voteChanSize)
+		h.votesSub = h.votepool.SubscribeNewVoteEvent(h.voteCh)
+		go h.voteBroadcastLoop()
+	}
+
 	// announce local pending transactions again
 	h.wg.Add(1)
 	h.reannoTxsCh = make(chan core.ReannoTxsEvent, txChanSize)
@@ -609,6 +663,9 @@ func (h *handler) Stop() {
 	h.txsSub.Unsubscribe()        // quits txBroadcastLoop
 	h.reannoTxsSub.Unsubscribe()  // quits txReannounceLoop
 	h.minedBlockSub.Unsubscribe() // quits blockBroadcastLoop
+	if h.votepool != nil {
+		h.votesSub.Unsubscribe() // quits voteBroadcastLoop
+	}
 
 	// Quit chainSync and txsync64.
 	// After this is done, no new peers will be accepted.
@@ -741,6 +798,37 @@ func (h *handler) ReannounceTransactions(txs types.Transactions) {
 		"announce packs", peersCount, "announced hashes", peersCount*uint(len(hashes)))
 }
 
+// BroadcastVote will propagate a batch of votes to all peers
+// which are not known to already have the given vote.
+func (h *handler) BroadcastVote(vote *types.VoteEnvelope) {
+	var (
+		directCount int // Count of announcements made
+		directPeers int
+
+		voteMap = make(map[*ethPeer]*types.VoteEnvelope) // Set peer->hash to transfer directly
+	)
+
+	// Broadcast vote to a batch of peers not knowing about it
+	peers := h.peers.peersWithoutVote(vote.Hash())
+	headBlock := h.chain.CurrentBlock()
+	currentTD := h.chain.GetTd(headBlock.Hash(), headBlock.NumberU64())
+	for _, peer := range peers {
+		_, peerTD := peer.Head()
+		deltaTD := new(big.Int).Abs(new(big.Int).Sub(currentTD, peerTD))
+		if deltaTD.Cmp(big.NewInt(deltaTdThreshold)) < 1 && peer.bscExt != nil {
+			voteMap[peer] = vote
+		}
+	}
+
+	for peer, _vote := range voteMap {
+		directPeers++
+		directCount += 1
+		votes := []*types.VoteEnvelope{_vote}
+		peer.bscExt.AsyncSendVotes(votes)
+	}
+	log.Debug("Vote broadcast", "vote packs", directPeers, "broadcast vote", directCount)
+}
+
 // minedBroadcastLoop sends mined blocks to connected peers.
 func (h *handler) minedBroadcastLoop() {
 	defer h.wg.Done()
@@ -778,3 +866,16 @@ func (h *handler) txReannounceLoop() {
 		}
 	}
 }
+
+// voteBroadcastLoop announces new vote to connected peers.
+func (h *handler) voteBroadcastLoop() {
+	defer h.wg.Done()
+	for {
+		select {
+		case event := <-h.voteCh:
+			h.BroadcastVote(event.Vote)
+		case <-h.votesSub.Err():
+			return
+		}
+	}
+}
diff --git a/eth/handler_bsc.go b/eth/handler_bsc.go
new file mode 100644
index 0000000000..fcb39ed1ab
--- /dev/null
+++ b/eth/handler_bsc.go
@@ -0,0 +1,68 @@
+package eth
+
+import (
+	"fmt"
+
+	"github.com/ethereum/go-ethereum/core"
+	"github.com/ethereum/go-ethereum/core/types"
+	"github.com/ethereum/go-ethereum/eth/protocols/bsc"
+	"github.com/ethereum/go-ethereum/p2p/enode"
+)
+
+// bscHandler implements the bsc.Backend interface to handle the various network
+// packets that are sent as broadcasts.
+type bscHandler handler
+
+func (h *bscHandler) Chain() *core.BlockChain { return h.chain }
+
+// RunPeer is invoked when a peer joins on the `bsc` protocol.
+func (h *bscHandler) RunPeer(peer *bsc.Peer, hand bsc.Handler) error {
+	if err := peer.Handshake(); err != nil {
+		// ensure that waitBscExtension receives the exit signal normally
+		// otherwise, can't graceful shutdown
+		ps := h.peers
+		id := peer.ID()
+
+		// Ensure nobody can double connect
+		ps.lock.Lock()
+		if wait, ok := ps.bscWait[id]; ok {
+			delete(ps.bscWait, id)
+			wait <- nil
+		}
+		ps.lock.Unlock()
+		return err
+	}
+	return (*handler)(h).runBscExtension(peer, hand)
+}
+
+// PeerInfo retrieves all known `bsc` information about a peer.
+func (h *bscHandler) PeerInfo(id enode.ID) interface{} {
+	if p := h.peers.peer(id.String()); p != nil && p.bscExt != nil {
+		return p.bscExt.info()
+	}
+	return nil
+}
+
+// Handle is invoked from a peer's message handler when it receives a new remote
+// message that the handler couldn't consume and serve itself.
+func (h *bscHandler) Handle(peer *bsc.Peer, packet bsc.Packet) error {
+	// DeliverSnapPacket is invoked from a peer's message handler when it transmits a
+	// data packet for the local node to consume.
+	switch packet := packet.(type) {
+	case *bsc.VotesPacket:
+		return h.handleVotesBroadcast(peer, packet.Votes)
+
+	default:
+		return fmt.Errorf("unexpected bsc packet type: %T", packet)
+	}
+}
+
+// handleVotesBroadcast is invoked from a peer's message handler when it transmits a
+// votes broadcast for the local node to process.
+func (h *bscHandler) handleVotesBroadcast(peer *bsc.Peer, votes []*types.VoteEnvelope) error {
+	// Try to put votes into votepool
+	for _, vote := range votes {
+		h.votepool.PutVote(vote)
+	}
+	return nil
+}
diff --git a/eth/handler_bsc_test.go b/eth/handler_bsc_test.go
new file mode 100644
index 0000000000..932826a886
--- /dev/null
+++ b/eth/handler_bsc_test.go
@@ -0,0 +1,276 @@
+package eth
+
+import (
+	"fmt"
+	"testing"
+	"time"
+
+	"github.com/ethereum/go-ethereum/common"
+	"github.com/ethereum/go-ethereum/core"
+	"github.com/ethereum/go-ethereum/core/forkid"
+	"github.com/ethereum/go-ethereum/core/types"
+	"github.com/ethereum/go-ethereum/eth/protocols/bsc"
+	"github.com/ethereum/go-ethereum/eth/protocols/eth"
+	"github.com/ethereum/go-ethereum/event"
+	"github.com/ethereum/go-ethereum/p2p"
+	"github.com/ethereum/go-ethereum/p2p/enode"
+)
+
+type testBscHandler struct {
+	voteBroadcasts event.Feed
+}
+
+func (h *testBscHandler) Chain() *core.BlockChain { panic("no backing chain") }
+func (h *testBscHandler) RunPeer(peer *bsc.Peer, handler bsc.Handler) error {
+	panic("not used in tests")
+}
+func (h *testBscHandler) PeerInfo(enode.ID) interface{} { panic("not used in tests") }
+func (h *testBscHandler) Handle(peer *bsc.Peer, packet bsc.Packet) error {
+	switch packet := packet.(type) {
+	case *bsc.VotesPacket:
+		h.voteBroadcasts.Send(packet.Votes)
+		return nil
+
+	default:
+		panic(fmt.Sprintf("unexpected bsc packet type in tests: %T", packet))
+	}
+}
+
+func TestSendVotes67(t *testing.T) { testSendVotes(t, eth.ETH67) }
+
+func testSendVotes(t *testing.T, protocol uint) {
+	t.Parallel()
+
+	// Create a message handler and fill the pool with big votes
+	handler := newTestHandler()
+	defer handler.close()
+
+	insert := make([]*types.VoteEnvelope, 100)
+	for index := range insert {
+		vote := types.VoteEnvelope{
+			VoteAddress: types.BLSPublicKey{},
+			Signature:   types.BLSSignature{},
+			Data: &types.VoteData{
+				SourceNumber: uint64(0),
+				SourceHash:   common.BytesToHash(common.Hex2Bytes(string(rune(0)))),
+				TargetNumber: uint64(index),
+				TargetHash:   common.BytesToHash(common.Hex2Bytes(string(rune(index)))),
+			},
+		}
+		insert[index] = &vote
+		go handler.votepool.PutVote(&vote)
+	}
+	time.Sleep(250 * time.Millisecond) // Wait until vote events get out of the system (can't use events, vote broadcaster races with peer join)
+
+	protos := []p2p.Protocol{
+		{
+			Name:    "eth",
+			Version: eth.ETH66,
+		},
+		{
+			Name:    "eth",
+			Version: eth.ETH67,
+		},
+		{
+			Name:    "bsc",
+			Version: bsc.Bsc1,
+		},
+	}
+	caps := []p2p.Cap{
+		{
+			Name:    "eth",
+			Version: eth.ETH66,
+		},
+		{
+			Name:    "eth",
+			Version: eth.ETH67,
+		},
+		{
+			Name:    "bsc",
+			Version: bsc.Bsc1,
+		},
+	}
+
+	// Create a source handler to send messages through and a sink peer to receive them
+	p2pEthSrc, p2pEthSink := p2p.MsgPipe()
+	defer p2pEthSrc.Close()
+	defer p2pEthSink.Close()
+
+	localEth := eth.NewPeer(protocol, p2p.NewPeerWithProtocols(enode.ID{1}, protos, "", caps), p2pEthSrc, nil)
+	remoteEth := eth.NewPeer(protocol, p2p.NewPeerWithProtocols(enode.ID{2}, protos, "", caps), p2pEthSink, nil)
+	defer localEth.Close()
+	defer remoteEth.Close()
+
+	p2pBscSrc, p2pBscSink := p2p.MsgPipe()
+	defer p2pBscSrc.Close()
+	defer p2pBscSink.Close()
+
+	localBsc := bsc.NewPeer(bsc.Bsc1, p2p.NewPeerWithProtocols(enode.ID{1}, protos, "", caps), p2pBscSrc)
+	remoteBsc := bsc.NewPeer(bsc.Bsc1, p2p.NewPeerWithProtocols(enode.ID{3}, protos, "", caps), p2pBscSink)
+	defer localBsc.Close()
+	defer remoteBsc.Close()
+
+	go func(p *bsc.Peer) {
+		(*bscHandler)(handler.handler).RunPeer(p, func(peer *bsc.Peer) error {
+			return bsc.Handle((*bscHandler)(handler.handler), peer)
+		})
+	}(localBsc)
+
+	time.Sleep(200 * time.Millisecond)
+	remoteBsc.Handshake()
+
+	time.Sleep(200 * time.Millisecond)
+	go func(p *eth.Peer) {
+		handler.handler.runEthPeer(p, func(peer *eth.Peer) error {
+			return eth.Handle((*ethHandler)(handler.handler), peer)
+		})
+	}(localEth)
+
+	// Run the handshake locally to avoid spinning up a source handler
+	var (
+		genesis = handler.chain.Genesis()
+		head    = handler.chain.CurrentBlock()
+		td      = handler.chain.GetTd(head.Hash(), head.NumberU64())
+	)
+	time.Sleep(200 * time.Millisecond)
+	if err := remoteEth.Handshake(1, td, head.Hash(), genesis.Hash(), forkid.NewIDWithChain(handler.chain), forkid.NewFilter(handler.chain), nil); err != nil {
+		t.Fatalf("failed to run protocol handshake: %d", err)
+	}
+	// After the handshake completes, the source handler should stream the sink
+	// the votes, subscribe to all inbound network events
+	backend := new(testBscHandler)
+	bcasts := make(chan []*types.VoteEnvelope)
+	bcastSub := backend.voteBroadcasts.Subscribe(bcasts)
+	defer bcastSub.Unsubscribe()
+
+	go bsc.Handle(backend, remoteBsc)
+
+	// Make sure we get all the votes on the correct channels
+	seen := make(map[common.Hash]struct{})
+	for len(seen) < len(insert) {
+		votes := <-bcasts
+		for _, vote := range votes {
+			if _, ok := seen[vote.Hash()]; ok {
+				t.Errorf("duplicate vote broadcast: %x", vote.Hash())
+			}
+			seen[vote.Hash()] = struct{}{}
+		}
+	}
+	for _, vote := range insert {
+		if _, ok := seen[vote.Hash()]; !ok {
+			t.Errorf("missing vote: %x", vote.Hash())
+		}
+	}
+
+}
+
+func TestRecvVotes67(t *testing.T) { testRecvVotes(t, eth.ETH67) }
+
+func testRecvVotes(t *testing.T, protocol uint) {
+	t.Parallel()
+
+	// Create a message handler and fill the pool with big votes
+	handler := newTestHandler()
+	defer handler.close()
+
+	protos := []p2p.Protocol{
+		{
+			Name:    "eth",
+			Version: eth.ETH66,
+		},
+		{
+			Name:    "eth",
+			Version: eth.ETH67,
+		},
+		{
+			Name:    "bsc",
+			Version: bsc.Bsc1,
+		},
+	}
+	caps := []p2p.Cap{
+		{
+			Name:    "eth",
+			Version: eth.ETH66,
+		},
+		{
+			Name:    "eth",
+			Version: eth.ETH67,
+		},
+		{
+			Name:    "bsc",
+			Version: bsc.Bsc1,
+		},
+	}
+
+	// Create a source handler to send messages through and a sink peer to receive them
+	p2pEthSrc, p2pEthSink := p2p.MsgPipe()
+	defer p2pEthSrc.Close()
+	defer p2pEthSink.Close()
+
+	localEth := eth.NewPeer(protocol, p2p.NewPeerWithProtocols(enode.ID{1}, protos, "", caps), p2pEthSrc, nil)
+	remoteEth := eth.NewPeer(protocol, p2p.NewPeerWithProtocols(enode.ID{2}, protos, "", caps), p2pEthSink, nil)
+	defer localEth.Close()
+	defer remoteEth.Close()
+
+	p2pBscSrc, p2pBscSink := p2p.MsgPipe()
+	defer p2pBscSrc.Close()
+	defer p2pBscSink.Close()
+
+	localBsc := bsc.NewPeer(bsc.Bsc1, p2p.NewPeerWithProtocols(enode.ID{1}, protos, "", caps), p2pBscSrc)
+	remoteBsc := bsc.NewPeer(bsc.Bsc1, p2p.NewPeerWithProtocols(enode.ID{3}, protos, "", caps), p2pBscSink)
+	defer localBsc.Close()
+	defer remoteBsc.Close()
+
+	go func(p *bsc.Peer) {
+		(*bscHandler)(handler.handler).RunPeer(p, func(peer *bsc.Peer) error {
+			return bsc.Handle((*bscHandler)(handler.handler), peer)
+		})
+	}(localBsc)
+
+	time.Sleep(200 * time.Millisecond)
+	remoteBsc.Handshake()
+
+	time.Sleep(200 * time.Millisecond)
+	go func(p *eth.Peer) {
+		handler.handler.runEthPeer(p, func(peer *eth.Peer) error {
+			return eth.Handle((*ethHandler)(handler.handler), peer)
+		})
+	}(localEth)
+
+	// Run the handshake locally to avoid spinning up a source handler
+	var (
+		genesis = handler.chain.Genesis()
+		head    = handler.chain.CurrentBlock()
+		td      = handler.chain.GetTd(head.Hash(), head.NumberU64())
+	)
+	time.Sleep(200 * time.Millisecond)
+	if err := remoteEth.Handshake(1, td, head.Hash(), genesis.Hash(), forkid.NewIDWithChain(handler.chain), forkid.NewFilter(handler.chain), nil); err != nil {
+		t.Fatalf("failed to run protocol handshake: %d", err)
+	}
+
+	votesCh := make(chan core.NewVoteEvent)
+	sub := handler.votepool.SubscribeNewVoteEvent(votesCh)
+	defer sub.Unsubscribe()
+	// Send the vote to the sink and verify that it's added to the vote pool
+	vote := types.VoteEnvelope{
+		VoteAddress: types.BLSPublicKey{},
+		Signature:   types.BLSSignature{},
+		Data: &types.VoteData{
+			SourceNumber: uint64(0),
+			SourceHash:   common.BytesToHash(common.Hex2Bytes(string(rune(0)))),
+			TargetNumber: uint64(1),
+			TargetHash:   common.BytesToHash(common.Hex2Bytes(string(rune(1)))),
+		},
+	}
+
+	remoteBsc.AsyncSendVotes([]*types.VoteEnvelope{&vote})
+	time.Sleep(100 * time.Millisecond)
+	select {
+	case event := <-votesCh:
+		if event.Vote.Hash() != vote.Hash() {
+			t.Errorf("added wrong vote hash: got %v, want %v", event.Vote.Hash(), vote.Hash())
+		}
+	case <-time.After(2 * time.Second):
+		t.Errorf("no NewVotesEvent received within 2 seconds")
+	}
+}
diff --git a/eth/handler_diff_test.go b/eth/handler_diff_test.go
index 0956459d98..06d16b4116 100644
--- a/eth/handler_diff_test.go
+++ b/eth/handler_diff_test.go
@@ -84,11 +84,13 @@ func newTestBackendWithGenerator(blocks int) *testBackend {
 		panic(err)
 	}
 	txpool := newTestTxPool()
+	votepool := newTestVotePool()
 
 	handler, _ := newHandler(&handlerConfig{
 		Database:   db,
 		Chain:      chain,
 		TxPool:     txpool,
+		VotePool:   votepool,
 		Network:    1,
 		Sync:       downloader.FullSync,
 		BloomCache: 1,
diff --git a/eth/handler_eth.go b/eth/handler_eth.go
index 8f01cf528c..f7e3fba880 100644
--- a/eth/handler_eth.go
+++ b/eth/handler_eth.go
@@ -76,6 +76,7 @@ func (h *ethHandler) Handle(peer *eth.Peer, packet eth.Packet) error {
 
 	case *eth.PooledTransactionsPacket:
 		return h.txFetcher.Enqueue(peer.ID(), *packet, true)
+
 	default:
 		return fmt.Errorf("unexpected eth packet type: %T", packet)
 	}
diff --git a/eth/handler_eth_test.go b/eth/handler_eth_test.go
index 74db6668c3..0144332e1c 100644
--- a/eth/handler_eth_test.go
+++ b/eth/handler_eth_test.go
@@ -33,6 +33,7 @@ import (
 	"github.com/ethereum/go-ethereum/core/types"
 	"github.com/ethereum/go-ethereum/core/vm"
 	"github.com/ethereum/go-ethereum/eth/downloader"
+	"github.com/ethereum/go-ethereum/eth/protocols/bsc"
 	"github.com/ethereum/go-ethereum/eth/protocols/eth"
 	"github.com/ethereum/go-ethereum/event"
 	"github.com/ethereum/go-ethereum/p2p"
@@ -90,11 +91,25 @@ func testForkIDSplit(t *testing.T, protocol uint) {
 
 		configNoFork  = &params.ChainConfig{HomesteadBlock: big.NewInt(1)}
 		configProFork = &params.ChainConfig{
-			HomesteadBlock: big.NewInt(1),
-			EIP150Block:    big.NewInt(2),
-			EIP155Block:    big.NewInt(2),
-			EIP158Block:    big.NewInt(2),
-			ByzantiumBlock: big.NewInt(3),
+			HomesteadBlock:      big.NewInt(1),
+			EIP150Block:         big.NewInt(2),
+			EIP155Block:         big.NewInt(2),
+			EIP158Block:         big.NewInt(2),
+			ByzantiumBlock:      big.NewInt(3),
+			ConstantinopleBlock: big.NewInt(4),
+			PetersburgBlock:     big.NewInt(4),
+			IstanbulBlock:       big.NewInt(4),
+			MuirGlacierBlock:    big.NewInt(4),
+			RamanujanBlock:      big.NewInt(4),
+			NielsBlock:          big.NewInt(4),
+			MirrorSyncBlock:     big.NewInt(4),
+			BrunoBlock:          big.NewInt(4),
+			EulerBlock:          big.NewInt(5),
+			GibbsBlock:          big.NewInt(5),
+			NanoBlock:           big.NewInt(5),
+			MoranBlock:          big.NewInt(5),
+			LubanBlock:          big.NewInt(6),
+			PlatoBlock:          big.NewInt(6),
 		}
 		dbNoFork  = rawdb.NewMemoryDatabase()
 		dbProFork = rawdb.NewMemoryDatabase()
@@ -115,6 +130,7 @@ func testForkIDSplit(t *testing.T, protocol uint) {
 			Database:   dbNoFork,
 			Chain:      chainNoFork,
 			TxPool:     newTestTxPool(),
+			VotePool:   newTestVotePool(),
 			Merger:     consensus.NewMerger(rawdb.NewMemoryDatabase()),
 			Network:    1,
 			Sync:       downloader.FullSync,
@@ -124,6 +140,7 @@ func testForkIDSplit(t *testing.T, protocol uint) {
 			Database:   dbProFork,
 			Chain:      chainProFork,
 			TxPool:     newTestTxPool(),
+			VotePool:   newTestVotePool(),
 			Merger:     consensus.NewMerger(rawdb.NewMemoryDatabase()),
 			Network:    1,
 			Sync:       downloader.FullSync,
@@ -230,7 +247,7 @@ func testForkIDSplit(t *testing.T, protocol uint) {
 					t.Fatalf("fork ID rejection didn't happen")
 				}
 			}
-		case <-time.After(250 * time.Millisecond):
+		case <-time.After(10000 * time.Millisecond):
 			t.Fatalf("split peers not rejected")
 		}
 	}
@@ -239,7 +256,63 @@ func testForkIDSplit(t *testing.T, protocol uint) {
 // Tests that received transactions are added to the local pool.
 func TestRecvTransactions66(t *testing.T) { testRecvTransactions(t, eth.ETH66) }
 
-func TestWaitDiffExtensionTimout(t *testing.T) {
+func testRecvTransactions(t *testing.T, protocol uint) {
+	t.Parallel()
+
+	// Create a message handler, configure it to accept transactions and watch them
+	handler := newTestHandler()
+	defer handler.close()
+
+	handler.handler.acceptTxs = 1 // mark synced to accept transactions
+
+	txs := make(chan core.NewTxsEvent)
+	sub := handler.txpool.SubscribeNewTxsEvent(txs)
+	defer sub.Unsubscribe()
+
+	// Create a source peer to send messages through and a sink handler to receive them
+	p2pSrc, p2pSink := p2p.MsgPipe()
+	defer p2pSrc.Close()
+	defer p2pSink.Close()
+
+	src := eth.NewPeer(protocol, p2p.NewPeerPipe(enode.ID{1}, "", nil, p2pSrc), p2pSrc, handler.txpool)
+	sink := eth.NewPeer(protocol, p2p.NewPeerPipe(enode.ID{2}, "", nil, p2pSink), p2pSink, handler.txpool)
+	defer src.Close()
+	defer sink.Close()
+
+	go handler.handler.runEthPeer(sink, func(peer *eth.Peer) error {
+		return eth.Handle((*ethHandler)(handler.handler), peer)
+	})
+	// Run the handshake locally to avoid spinning up a source handler
+	var (
+		genesis = handler.chain.Genesis()
+		head    = handler.chain.CurrentBlock()
+		td      = handler.chain.GetTd(head.Hash(), head.NumberU64())
+	)
+	if err := src.Handshake(1, td, head.Hash(), genesis.Hash(), forkid.NewIDWithChain(handler.chain), forkid.NewFilter(handler.chain), nil); err != nil {
+		t.Fatalf("failed to run protocol handshake")
+	}
+	// Send the transaction to the sink and verify that it's added to the tx pool
+	tx := types.NewTransaction(0, common.Address{}, big.NewInt(0), 100000, big.NewInt(0), nil)
+	tx, _ = types.SignTx(tx, types.HomesteadSigner{}, testKey)
+
+	if err := src.SendTransactions([]*types.Transaction{tx}); err != nil {
+		t.Fatalf("failed to send transaction: %v", err)
+	}
+	select {
+	case event := <-txs:
+		if len(event.Txs) != 1 {
+			t.Errorf("wrong number of added transactions: got %d, want 1", len(event.Txs))
+		} else if event.Txs[0].Hash() != tx.Hash() {
+			t.Errorf("added wrong tx hash: got %v, want %v", event.Txs[0].Hash(), tx.Hash())
+		}
+	case <-time.After(2 * time.Second):
+		t.Errorf("no NewTxsEvent received within 2 seconds")
+	}
+}
+
+func TestWaitDiffExtensionTimout67(t *testing.T) { testWaitDiffExtensionTimout(t, eth.ETH67) }
+
+func testWaitDiffExtensionTimout(t *testing.T, protocol uint) {
 	t.Parallel()
 
 	// Create a message handler, configure it to accept transactions and watch them
@@ -257,7 +330,7 @@ func TestWaitDiffExtensionTimout(t *testing.T) {
 		},
 	}
 
-	sink := eth.NewPeer(eth.ETH67, p2p.NewPeerWithProtocols(enode.ID{2}, protos, "", []p2p.Cap{
+	sink := eth.NewPeer(protocol, p2p.NewPeerWithProtocols(enode.ID{2}, protos, "", []p2p.Cap{
 		{
 			Name:    "diff",
 			Version: 1,
@@ -274,7 +347,9 @@ func TestWaitDiffExtensionTimout(t *testing.T) {
 	}
 }
 
-func TestWaitSnapExtensionTimout(t *testing.T) {
+func TestWaitSnapExtensionTimout67(t *testing.T) { testWaitSnapExtensionTimout(t, eth.ETH67) }
+
+func testWaitSnapExtensionTimout(t *testing.T, protocol uint) {
 	t.Parallel()
 
 	// Create a message handler, configure it to accept transactions and watch them
@@ -292,7 +367,7 @@ func TestWaitSnapExtensionTimout(t *testing.T) {
 		},
 	}
 
-	sink := eth.NewPeer(eth.ETH67, p2p.NewPeerWithProtocols(enode.ID{2}, protos, "", []p2p.Cap{
+	sink := eth.NewPeer(protocol, p2p.NewPeerWithProtocols(enode.ID{2}, protos, "", []p2p.Cap{
 		{
 			Name:    "snap",
 			Version: 1,
@@ -309,57 +384,40 @@ func TestWaitSnapExtensionTimout(t *testing.T) {
 	}
 }
 
-func testRecvTransactions(t *testing.T, protocol uint) {
+func TestWaitBscExtensionTimout67(t *testing.T) { testWaitBscExtensionTimout(t, eth.ETH67) }
+
+func testWaitBscExtensionTimout(t *testing.T, protocol uint) {
 	t.Parallel()
 
 	// Create a message handler, configure it to accept transactions and watch them
 	handler := newTestHandler()
 	defer handler.close()
 
-	handler.handler.acceptTxs = 1 // mark synced to accept transactions
-
-	txs := make(chan core.NewTxsEvent)
-	sub := handler.txpool.SubscribeNewTxsEvent(txs)
-	defer sub.Unsubscribe()
-
 	// Create a source peer to send messages through and a sink handler to receive them
-	p2pSrc, p2pSink := p2p.MsgPipe()
-	defer p2pSrc.Close()
+	_, p2pSink := p2p.MsgPipe()
 	defer p2pSink.Close()
 
-	src := eth.NewPeer(protocol, p2p.NewPeerPipe(enode.ID{1}, "", nil, p2pSrc), p2pSrc, handler.txpool)
-	sink := eth.NewPeer(protocol, p2p.NewPeerPipe(enode.ID{2}, "", nil, p2pSink), p2pSink, handler.txpool)
-	defer src.Close()
+	protos := []p2p.Protocol{
+		{
+			Name:    "bsc",
+			Version: bsc.Bsc1,
+		},
+	}
+
+	sink := eth.NewPeer(protocol, p2p.NewPeerWithProtocols(enode.ID{2}, protos, "", []p2p.Cap{
+		{
+			Name:    "bsc",
+			Version: bsc.Bsc1,
+		},
+	}), p2pSink, nil)
 	defer sink.Close()
 
-	go handler.handler.runEthPeer(sink, func(peer *eth.Peer) error {
+	err := handler.handler.runEthPeer(sink, func(peer *eth.Peer) error {
 		return eth.Handle((*ethHandler)(handler.handler), peer)
 	})
-	// Run the handshake locally to avoid spinning up a source handler
-	var (
-		genesis = handler.chain.Genesis()
-		head    = handler.chain.CurrentBlock()
-		td      = handler.chain.GetTd(head.Hash(), head.NumberU64())
-	)
-	if err := src.Handshake(1, td, head.Hash(), genesis.Hash(), forkid.NewIDWithChain(handler.chain), forkid.NewFilter(handler.chain), nil); err != nil {
-		t.Fatalf("failed to run protocol handshake")
-	}
-	// Send the transaction to the sink and verify that it's added to the tx pool
-	tx := types.NewTransaction(0, common.Address{}, big.NewInt(0), 100000, big.NewInt(0), nil)
-	tx, _ = types.SignTx(tx, types.HomesteadSigner{}, testKey)
 
-	if err := src.SendTransactions([]*types.Transaction{tx}); err != nil {
-		t.Fatalf("failed to send transaction: %v", err)
-	}
-	select {
-	case event := <-txs:
-		if len(event.Txs) != 1 {
-			t.Errorf("wrong number of added transactions: got %d, want 1", len(event.Txs))
-		} else if event.Txs[0].Hash() != tx.Hash() {
-			t.Errorf("added wrong tx hash: got %v, want %v", event.Txs[0].Hash(), tx.Hash())
-		}
-	case <-time.After(2 * time.Second):
-		t.Errorf("no NewTxsEvent received within 2 seconds")
+	if err == nil || err.Error() != "peer wait timeout" {
+		t.Fatalf("error should be `peer wait timeout`")
 	}
 }
 
diff --git a/eth/handler_test.go b/eth/handler_test.go
index 4d4c11592c..b38248e47b 100644
--- a/eth/handler_test.go
+++ b/eth/handler_test.go
@@ -136,10 +136,11 @@ func (p *testTxPool) SubscribeReannoTxsEvent(ch chan<- core.ReannoTxsEvent) even
 // preinitialized with some sane testing defaults and the transaction pool mocked
 // out.
 type testHandler struct {
-	db      ethdb.Database
-	chain   *core.BlockChain
-	txpool  *testTxPool
-	handler *handler
+	db       ethdb.Database
+	chain    *core.BlockChain
+	txpool   *testTxPool
+	votepool *testVotePool
+	handler  *handler
 }
 
 // newTestHandler creates a new handler for testing purposes with no blocks.
@@ -164,12 +165,14 @@ func newTestHandlerWithBlocks(blocks int) *testHandler {
 		panic(err)
 	}
 	txpool := newTestTxPool()
+	votepool := newTestVotePool()
 
 	handler, _ := newHandler(&handlerConfig{
 		Database:   db,
 		Chain:      chain,
 		TxPool:     txpool,
 		Merger:     consensus.NewMerger(rawdb.NewMemoryDatabase()),
+		VotePool:   votepool,
 		Network:    1,
 		Sync:       downloader.SnapSync,
 		BloomCache: 1,
@@ -177,10 +180,11 @@ func newTestHandlerWithBlocks(blocks int) *testHandler {
 	handler.Start(1000)
 
 	return &testHandler{
-		db:      db,
-		chain:   chain,
-		txpool:  txpool,
-		handler: handler,
+		db:       db,
+		chain:    chain,
+		txpool:   txpool,
+		votepool: votepool,
+		handler:  handler,
 	}
 }
 
@@ -189,3 +193,45 @@ func (b *testHandler) close() {
 	b.handler.Stop()
 	b.chain.Stop()
 }
+
+// newTestVotePool creates a mock vote pool.
+type testVotePool struct {
+	pool map[common.Hash]*types.VoteEnvelope // Hash map of collected votes
+
+	voteFeed event.Feed   // Notification feed to allow waiting for inclusion
+	lock     sync.RWMutex // Protects the vote pool
+}
+
+// newTestVotePool creates a mock vote pool.
+func newTestVotePool() *testVotePool {
+	return &testVotePool{
+		pool: make(map[common.Hash]*types.VoteEnvelope),
+	}
+}
+
+func (t *testVotePool) PutVote(vote *types.VoteEnvelope) {
+	t.lock.Lock()
+	defer t.lock.Unlock()
+
+	t.pool[vote.Hash()] = vote
+	t.voteFeed.Send(core.NewVoteEvent{Vote: vote})
+}
+
+func (t *testVotePool) FetchVoteByBlockHash(blockHash common.Hash) []*types.VoteEnvelope {
+	panic("implement me")
+}
+
+func (t *testVotePool) GetVotes() []*types.VoteEnvelope {
+	t.lock.RLock()
+	defer t.lock.RUnlock()
+
+	votes := make([]*types.VoteEnvelope, 0, len(t.pool))
+	for _, vote := range t.pool {
+		votes = append(votes, vote)
+	}
+	return votes
+}
+
+func (t *testVotePool) SubscribeNewVoteEvent(ch chan<- core.NewVoteEvent) event.Subscription {
+	return t.voteFeed.Subscribe(ch)
+}
diff --git a/eth/peer.go b/eth/peer.go
index 802d1e5aac..77a150434c 100644
--- a/eth/peer.go
+++ b/eth/peer.go
@@ -20,6 +20,7 @@ import (
 	"math/big"
 	"time"
 
+	"github.com/ethereum/go-ethereum/eth/protocols/bsc"
 	"github.com/ethereum/go-ethereum/eth/protocols/trust"
 
 	"github.com/ethereum/go-ethereum/eth/protocols/diff"
@@ -41,6 +42,7 @@ type ethPeer struct {
 	snapExt  *snapPeer // Satellite `snap` connection
 	diffExt  *diffPeer
 	trustExt *trustPeer
+	bscExt   *bscPeer // Satellite `bsc` connection
 
 	syncDrop *time.Timer   // Connection dropper if `eth` sync progress isn't validated in time
 	snapWait chan struct{} // Notification channel for snap connections
@@ -76,6 +78,12 @@ type trustPeerInfo struct {
 	Version uint `json:"version"` // Trust protocol version negotiated
 }
 
+// bscPeerInfo represents a short summary of the `bsc` sub-protocol metadata known
+// about a connected peer.
+type bscPeerInfo struct {
+	Version uint `json:"version"` // bsc protocol version negotiated
+}
+
 // snapPeer is a wrapper around snap.Peer to maintain a few extra metadata.
 type snapPeer struct {
 	*snap.Peer
@@ -91,6 +99,11 @@ type trustPeer struct {
 	*trust.Peer
 }
 
+// bscPeer is a wrapper around bsc.Peer to maintain a few extra metadata.
+type bscPeer struct {
+	*bsc.Peer
+}
+
 // info gathers and returns some `diff` protocol metadata known about a peer.
 func (p *diffPeer) info() *diffPeerInfo {
 	return &diffPeerInfo{
@@ -112,3 +125,10 @@ func (p *trustPeer) info() *trustPeerInfo {
 		Version: p.Version(),
 	}
 }
+
+// info gathers and returns some `bsc` protocol metadata known about a peer.
+func (p *bscPeer) info() *bscPeerInfo {
+	return &bscPeerInfo{
+		Version: p.Version(),
+	}
+}
diff --git a/eth/peerset.go b/eth/peerset.go
index 6484dae8dd..5dfb73934a 100644
--- a/eth/peerset.go
+++ b/eth/peerset.go
@@ -25,6 +25,7 @@ import (
 	"github.com/ethereum/go-ethereum/common"
 	"github.com/ethereum/go-ethereum/core"
 	"github.com/ethereum/go-ethereum/eth/downloader"
+	"github.com/ethereum/go-ethereum/eth/protocols/bsc"
 	"github.com/ethereum/go-ethereum/eth/protocols/diff"
 	"github.com/ethereum/go-ethereum/eth/protocols/eth"
 	"github.com/ethereum/go-ethereum/eth/protocols/snap"
@@ -59,12 +60,17 @@ var (
 	// errTrustWithoutEth is returned if a peer attempts to connect only on the
 	// trust protocol without advertising the eth main protocol.
 	errTrustWithoutEth = errors.New("peer connected on trust without compatible eth support")
+
+	// errBscWithoutEth is returned if a peer attempts to connect only on the
+	// bsc protocol without advertising the eth main protocol.
+	errBscWithoutEth = errors.New("peer connected on bsc without compatible eth support")
 )
 
 const (
 	// extensionWaitTimeout is the maximum allowed time for the extension wait to
 	// complete before dropping the connection as malicious.
 	extensionWaitTimeout = 10 * time.Second
+	tryWaitTimeout       = 100 * time.Millisecond
 )
 
 // peerSet represents the collection of active peers currently participating in
@@ -82,6 +88,9 @@ type peerSet struct {
 	trustWait map[string]chan *trust.Peer // Peers connected on `eth` waiting for their trust extension
 	trustPend map[string]*trust.Peer      // Peers connected on the `trust` protocol, but not yet on `eth`
 
+	bscWait map[string]chan *bsc.Peer // Peers connected on `eth` waiting for their bsc extension
+	bscPend map[string]*bsc.Peer      // Peers connected on the `bsc` protocol, but not yet on `eth`
+
 	lock   sync.RWMutex
 	closed bool
 }
@@ -96,6 +105,8 @@ func newPeerSet() *peerSet {
 		diffPend:  make(map[string]*diff.Peer),
 		trustWait: make(map[string]chan *trust.Peer),
 		trustPend: make(map[string]*trust.Peer),
+		bscWait:   make(map[string]chan *bsc.Peer),
+		bscPend:   make(map[string]*bsc.Peer),
 	}
 }
 
@@ -193,6 +204,36 @@ func (ps *peerSet) registerTrustExtension(peer *trust.Peer) error {
 	return nil
 }
 
+// registerBscExtension unblocks an already connected `eth` peer waiting for its
+// `bsc` extension, or if no such peer exists, tracks the extension for the time
+// being until the `eth` main protocol starts looking for it.
+func (ps *peerSet) registerBscExtension(peer *bsc.Peer) error {
+	// Reject the peer if it advertises `bsc` without `eth` as `bsc` is only a
+	// satellite protocol meaningful with the chain selection of `eth`
+	if !peer.RunningCap(eth.ProtocolName, eth.ProtocolVersions) {
+		return errBscWithoutEth
+	}
+	// Ensure nobody can double connect
+	ps.lock.Lock()
+	defer ps.lock.Unlock()
+
+	id := peer.ID()
+	if _, ok := ps.peers[id]; ok {
+		return errPeerAlreadyRegistered // avoid connections with the same id as existing ones
+	}
+	if _, ok := ps.bscPend[id]; ok {
+		return errPeerAlreadyRegistered // avoid connections with the same id as pending ones
+	}
+	// Inject the peer into an `eth` counterpart is available, otherwise save for later
+	if wait, ok := ps.bscWait[id]; ok {
+		delete(ps.bscWait, id)
+		wait <- peer
+		return nil
+	}
+	ps.bscPend[id] = peer
+	return nil
+}
+
 // waitExtensions blocks until all satellite protocols are connected and tracked
 // by the peerset.
 func (ps *peerSet) waitSnapExtension(peer *eth.Peer) (*snap.Peer, error) {
@@ -326,6 +367,65 @@ func (ps *peerSet) waitTrustExtension(peer *eth.Peer) (*trust.Peer, error) {
 	}
 }
 
+// waitBscExtension blocks until all satellite protocols are connected and tracked
+// by the peerset.
+func (ps *peerSet) waitBscExtension(peer *eth.Peer) (*bsc.Peer, error) {
+	// If the peer does not support a compatible `bsc`, don't wait
+	if !peer.RunningCap(bsc.ProtocolName, bsc.ProtocolVersions) {
+		return nil, nil
+	}
+	// Ensure nobody can double connect
+	ps.lock.Lock()
+
+	id := peer.ID()
+	if _, ok := ps.peers[id]; ok {
+		ps.lock.Unlock()
+		return nil, errPeerAlreadyRegistered // avoid connections with the same id as existing ones
+	}
+	if _, ok := ps.bscWait[id]; ok {
+		ps.lock.Unlock()
+		return nil, errPeerAlreadyRegistered // avoid connections with the same id as pending ones
+	}
+	// If `bsc` already connected, retrieve the peer from the pending set
+	if bsc, ok := ps.bscPend[id]; ok {
+		delete(ps.bscPend, id)
+
+		ps.lock.Unlock()
+		return bsc, nil
+	}
+	// Otherwise wait for `bsc` to connect concurrently
+	wait := make(chan *bsc.Peer)
+	ps.bscWait[id] = wait
+	ps.lock.Unlock()
+
+	select {
+	case peer := <-wait:
+		return peer, nil
+
+	case <-time.After(extensionWaitTimeout):
+		// could be deadlock, so we use TryLock to avoid it.
+		if ps.lock.TryLock() {
+			delete(ps.bscWait, id)
+			ps.lock.Unlock()
+			return nil, errPeerWaitTimeout
+		}
+		// if TryLock failed, we wait for a while and try again.
+		for {
+			select {
+			case <-wait:
+				// discard the peer, even though the peer arrived.
+				return nil, errPeerWaitTimeout
+			case <-time.After(tryWaitTimeout):
+				if ps.lock.TryLock() {
+					delete(ps.bscWait, id)
+					ps.lock.Unlock()
+					return nil, errPeerWaitTimeout
+				}
+			}
+		}
+	}
+}
+
 func (ps *peerSet) GetDiffPeer(pid string) downloader.IDiffPeer {
 	if p := ps.peer(pid); p != nil && p.diffExt != nil {
 		return p.diffExt
@@ -349,7 +449,7 @@ func (ps *peerSet) GetVerifyPeers() []core.VerifyPeer {
 
 // registerPeer injects a new `eth` peer into the working set, or returns an error
 // if the peer is already known.
-func (ps *peerSet) registerPeer(peer *eth.Peer, ext *snap.Peer, diffExt *diff.Peer, trustExt *trust.Peer) error {
+func (ps *peerSet) registerPeer(peer *eth.Peer, ext *snap.Peer, diffExt *diff.Peer, trustExt *trust.Peer, bscExt *bsc.Peer) error {
 	// Start tracking the new peer
 	ps.lock.Lock()
 	defer ps.lock.Unlock()
@@ -374,6 +474,9 @@ func (ps *peerSet) registerPeer(peer *eth.Peer, ext *snap.Peer, diffExt *diff.Pe
 	if trustExt != nil {
 		eth.trustExt = &trustPeer{trustExt}
 	}
+	if bscExt != nil {
+		eth.bscExt = &bscPeer{bscExt}
+	}
 	ps.peers[id] = eth
 	return nil
 }
@@ -420,7 +523,7 @@ func (ps *peerSet) headPeers(num uint) []*ethPeer {
 }
 
 // peersWithoutBlock retrieves a list of peers that do not have a given block in
-// their set of known hashes so it might be propagated to them.
+// their set of known hashes, so it might be propagated to them.
 func (ps *peerSet) peersWithoutBlock(hash common.Hash) []*ethPeer {
 	ps.lock.RLock()
 	defer ps.lock.RUnlock()
@@ -449,6 +552,21 @@ func (ps *peerSet) peersWithoutTransaction(hash common.Hash) []*ethPeer {
 	return list
 }
 
+// peersWithoutVote retrieves a list of peers that do not have a given
+// vote in their set of known hashes.
+func (ps *peerSet) peersWithoutVote(hash common.Hash) []*ethPeer {
+	ps.lock.RLock()
+	defer ps.lock.RUnlock()
+
+	list := make([]*ethPeer, 0, len(ps.peers))
+	for _, p := range ps.peers {
+		if p.bscExt != nil && !p.bscExt.KnownVote(hash) {
+			list = append(list, p)
+		}
+	}
+	return list
+}
+
 // len returns if the current number of `eth` peers in the set. Since the `snap`
 // peers are tied to the existence of an `eth` connection, that will always be a
 // subset of `eth`.
diff --git a/eth/protocols/bsc/discovery.go b/eth/protocols/bsc/discovery.go
new file mode 100644
index 0000000000..6a4fac346e
--- /dev/null
+++ b/eth/protocols/bsc/discovery.go
@@ -0,0 +1,16 @@
+package bsc
+
+import (
+	"github.com/ethereum/go-ethereum/rlp"
+)
+
+// enrEntry is the ENR entry which advertises `bsc` protocol on the discovery.
+type enrEntry struct {
+	// Ignore additional fields (for forward compatibility).
+	Rest []rlp.RawValue `rlp:"tail"`
+}
+
+// ENRKey implements enr.Entry.
+func (e enrEntry) ENRKey() string {
+	return "bsc"
+}
diff --git a/eth/protocols/bsc/handler.go b/eth/protocols/bsc/handler.go
new file mode 100644
index 0000000000..e993f255f3
--- /dev/null
+++ b/eth/protocols/bsc/handler.go
@@ -0,0 +1,145 @@
+package bsc
+
+import (
+	"fmt"
+	"time"
+
+	"github.com/ethereum/go-ethereum/core"
+	"github.com/ethereum/go-ethereum/metrics"
+	"github.com/ethereum/go-ethereum/p2p"
+	"github.com/ethereum/go-ethereum/p2p/enode"
+	"github.com/ethereum/go-ethereum/p2p/enr"
+)
+
+// Handler is a callback to invoke from an outside runner after the boilerplate
+// exchanges have passed.
+type Handler func(peer *Peer) error
+
+type Backend interface {
+	// Chain retrieves the blockchain object to serve data.
+	Chain() *core.BlockChain
+
+	// RunPeer is invoked when a peer joins on the `bsc` protocol. The handler
+	// should do any peer maintenance work, handshakes and validations. If all
+	// is passed, control should be given back to the `handler` to process the
+	// inbound messages going forward.
+	RunPeer(peer *Peer, handler Handler) error
+
+	// PeerInfo retrieves all known `bsc` information about a peer.
+	PeerInfo(id enode.ID) interface{}
+
+	// Handle is a callback to be invoked when a data packet is received from
+	// the remote peer. Only packets not consumed by the protocol handler will
+	// be forwarded to the backend.
+	Handle(peer *Peer, packet Packet) error
+}
+
+// MakeProtocols constructs the P2P protocol definitions for `bsc`.
+func MakeProtocols(backend Backend, dnsdisc enode.Iterator) []p2p.Protocol {
+	// Filter the discovery iterator for nodes advertising vote support.
+	dnsdisc = enode.Filter(dnsdisc, func(n *enode.Node) bool {
+		var vote enrEntry
+		return n.Load(&vote) == nil
+	})
+
+	protocols := make([]p2p.Protocol, len(ProtocolVersions))
+	for i, version := range ProtocolVersions {
+		version := version // Closure
+
+		protocols[i] = p2p.Protocol{
+			Name:    ProtocolName,
+			Version: version,
+			Length:  protocolLengths[version],
+			Run: func(p *p2p.Peer, rw p2p.MsgReadWriter) error {
+				peer := NewPeer(version, p, rw)
+				defer peer.Close()
+
+				return backend.RunPeer(peer, func(peer *Peer) error {
+					return Handle(backend, peer)
+				})
+			},
+			NodeInfo: func() interface{} {
+				return nodeInfo(backend.Chain())
+			},
+			PeerInfo: func(id enode.ID) interface{} {
+				return backend.PeerInfo(id)
+			},
+			Attributes:     []enr.Entry{&enrEntry{}},
+			DialCandidates: dnsdisc,
+		}
+	}
+	return protocols
+}
+
+// Handle is the callback invoked to manage the life cycle of a `bsc` peer.
+// When this function terminates, the peer is disconnected.
+func Handle(backend Backend, peer *Peer) error {
+	for {
+		if err := handleMessage(backend, peer); err != nil {
+			peer.Log().Debug("Message handling failed in `bsc`", "err", err)
+			return err
+		}
+	}
+}
+
+type msgHandler func(backend Backend, msg Decoder, peer *Peer) error
+type Decoder interface {
+	Decode(val interface{}) error
+}
+
+var bsc1 = map[uint64]msgHandler{
+	VotesMsg: handleVotes,
+}
+
+// handleMessage is invoked whenever an inbound message is received from a
+// remote peer on the `bsc` protocol. The remote connection is torn down upon
+// returning any error.
+func handleMessage(backend Backend, peer *Peer) error {
+	// Read the next message from the remote peer, and ensure it's fully consumed
+	msg, err := peer.rw.ReadMsg()
+	if err != nil {
+		return err
+	}
+	if msg.Size > maxMessageSize {
+		return fmt.Errorf("%w: %v > %v", errMsgTooLarge, msg.Size, maxMessageSize)
+	}
+	defer msg.Discard()
+
+	var handlers = bsc1
+
+	// Track the amount of time it takes to serve the request and run the handler
+	if metrics.Enabled {
+		h := fmt.Sprintf("%s/%s/%d/%#02x", p2p.HandleHistName, ProtocolName, peer.Version(), msg.Code)
+		defer func(start time.Time) {
+			sampler := func() metrics.Sample {
+				return metrics.ResettingSample(
+					metrics.NewExpDecaySample(1028, 0.015),
+				)
+			}
+			metrics.GetOrRegisterHistogramLazy(h, nil, sampler).Update(time.Since(start).Microseconds())
+		}(time.Now())
+	}
+	if handler := handlers[msg.Code]; handler != nil {
+		return handler(backend, msg, peer)
+	}
+	return fmt.Errorf("%w: %v", errInvalidMsgCode, msg.Code)
+}
+
+func handleVotes(backend Backend, msg Decoder, peer *Peer) error {
+	ann := new(VotesPacket)
+	if err := msg.Decode(ann); err != nil {
+		return fmt.Errorf("%w: message %v: %v", errDecode, msg, err)
+	}
+	// Schedule all the unknown hashes for retrieval
+	peer.markVotes(ann.Votes)
+	return backend.Handle(peer, ann)
+}
+
+// NodeInfo represents a short summary of the `bsc` sub-protocol metadata
+// known about the host peer.
+type NodeInfo struct{}
+
+// nodeInfo retrieves some `bsc` protocol metadata about the running host node.
+func nodeInfo(_ *core.BlockChain) *NodeInfo {
+	return &NodeInfo{}
+}
diff --git a/eth/protocols/bsc/handshake.go b/eth/protocols/bsc/handshake.go
new file mode 100644
index 0000000000..c8e74f3d12
--- /dev/null
+++ b/eth/protocols/bsc/handshake.go
@@ -0,0 +1,68 @@
+package bsc
+
+import (
+	"fmt"
+	"time"
+
+	"github.com/ethereum/go-ethereum/common/gopool"
+	"github.com/ethereum/go-ethereum/p2p"
+)
+
+const (
+	// handshakeTimeout is the maximum allowed time for the `bsc` handshake to
+	// complete before dropping the connection as malicious.
+	handshakeTimeout = 5 * time.Second
+)
+
+// Handshake executes the bsc protocol handshake,
+func (p *Peer) Handshake() error {
+	// Send out own handshake in a new thread
+	errc := make(chan error, 2)
+
+	var cap BscCapPacket // safe to read after two values have been received from errc
+
+	gopool.Submit(func() {
+		errc <- p2p.Send(p.rw, BscCapMsg, &BscCapPacket{
+			ProtocolVersion: p.version,
+			Extra:           defaultExtra,
+		})
+	})
+	gopool.Submit(func() {
+		errc <- p.readCap(&cap)
+	})
+	timeout := time.NewTimer(handshakeTimeout)
+	defer timeout.Stop()
+	for i := 0; i < 2; i++ {
+		select {
+		case err := <-errc:
+			if err != nil {
+				return err
+			}
+		case <-timeout.C:
+			return p2p.DiscReadTimeout
+		}
+	}
+	return nil
+}
+
+// readCap reads the remote handshake message.
+func (p *Peer) readCap(cap *BscCapPacket) error {
+	msg, err := p.rw.ReadMsg()
+	if err != nil {
+		return err
+	}
+	if msg.Code != BscCapMsg {
+		return fmt.Errorf("%w: first msg has code %x (!= %x)", errNoBscCapMsg, msg.Code, BscCapMsg)
+	}
+	if msg.Size > maxMessageSize {
+		return fmt.Errorf("%w: %v > %v", errMsgTooLarge, msg.Size, maxMessageSize)
+	}
+	// Decode the handshake and make sure everything matches
+	if err := msg.Decode(cap); err != nil {
+		return fmt.Errorf("%w: message %v: %v", errDecode, msg, err)
+	}
+	if cap.ProtocolVersion != p.version {
+		return fmt.Errorf("%w: %d (!= %d)", errProtocolVersionMismatch, cap.ProtocolVersion, p.version)
+	}
+	return nil
+}
diff --git a/eth/protocols/bsc/peer.go b/eth/protocols/bsc/peer.go
new file mode 100644
index 0000000000..e66ab2a6b3
--- /dev/null
+++ b/eth/protocols/bsc/peer.go
@@ -0,0 +1,157 @@
+package bsc
+
+import (
+	mapset "github.com/deckarep/golang-set"
+
+	"github.com/ethereum/go-ethereum/common"
+	"github.com/ethereum/go-ethereum/core/types"
+	"github.com/ethereum/go-ethereum/log"
+	"github.com/ethereum/go-ethereum/p2p"
+)
+
+const (
+	// maxKnownVotes is the maximum vote hashes to keep in the known list
+	// before starting to randomly evict them.
+	maxKnownVotes = 5376
+)
+
+// max is a helper function which returns the larger of the two given integers.
+func max(a, b int) int {
+	if a > b {
+		return a
+	}
+	return b
+}
+
+// Peer is a collection of relevant information we have about a `bsc` peer.
+type Peer struct {
+	id            string                     // Unique ID for the peer, cached
+	knownVotes    *knownCache                // Set of vote hashes known to be known by this peer
+	voteBroadcast chan []*types.VoteEnvelope // Channel used to queue votes propagation requests
+
+	*p2p.Peer                   // The embedded P2P package peer
+	rw        p2p.MsgReadWriter // Input/output streams for bsc
+	version   uint              // Protocol version negotiated
+	logger    log.Logger        // Contextual logger with the peer id injected
+	term      chan struct{}     // Termination channel to stop the broadcasters
+}
+
+// NewPeer create a wrapper for a network connection and negotiated protocol
+// version.
+func NewPeer(version uint, p *p2p.Peer, rw p2p.MsgReadWriter) *Peer {
+	id := p.ID().String()
+	peer := &Peer{
+		id:            id,
+		knownVotes:    newKnownCache(maxKnownVotes),
+		voteBroadcast: make(chan []*types.VoteEnvelope),
+		Peer:          p,
+		rw:            rw,
+		version:       version,
+		logger:        log.New("peer", id[:8]),
+		term:          make(chan struct{}),
+	}
+	go peer.broadcastVotes()
+	return peer
+}
+
+// ID retrieves the peer's unique identifier.
+func (p *Peer) ID() string {
+	return p.id
+}
+
+// Version retrieves the peer's negotiated `bsc` protocol version.
+func (p *Peer) Version() uint {
+	return p.version
+}
+
+// Log overrides the P2P logget with the higher level one containing only the id.
+func (p *Peer) Log() log.Logger {
+	return p.logger
+}
+
+// Close signals the broadcast goroutine to terminate. Only ever call this if
+// you created the peer yourself via NewPeer. Otherwise let whoever created it
+// clean it up!
+func (p *Peer) Close() {
+	close(p.term)
+}
+
+// KnownVote returns whether peer is known to already have a vote.
+func (p *Peer) KnownVote(hash common.Hash) bool {
+	return p.knownVotes.contains(hash)
+}
+
+// markVotes marks votes as known for the peer, ensuring that they
+// will never be repropagated to this particular peer.
+func (p *Peer) markVotes(votes []*types.VoteEnvelope) {
+	for _, vote := range votes {
+		if !p.knownVotes.contains(vote.Hash()) {
+			// If we reached the memory allowance, drop a previously known vote hash
+			p.knownVotes.add(vote.Hash())
+		}
+	}
+}
+
+// sendVotes propagates a batch of votes to the remote peer.
+func (p *Peer) sendVotes(votes []*types.VoteEnvelope) error {
+	// Mark all the votes as known, but ensure we don't overflow our limits
+	p.markVotes(votes)
+	return p2p.Send(p.rw, VotesMsg, &VotesPacket{votes})
+}
+
+// AsyncSendVotes queues a batch of vote hashes for propagation to a remote peer. If
+// the peer's broadcast queue is full, the event is silently dropped.
+func (p *Peer) AsyncSendVotes(votes []*types.VoteEnvelope) {
+	select {
+	case p.voteBroadcast <- votes:
+	case <-p.term:
+		p.Log().Debug("Dropping vote propagation", "count", len(votes))
+	}
+}
+
+// broadcastVotes is a write loop that schedules votes broadcasts
+// to the remote peer. The goal is to have an async writer that does not lock up
+// node internals and at the same time rate limits queued data.
+func (p *Peer) broadcastVotes() {
+	for {
+		select {
+		case votes := <-p.voteBroadcast:
+			if err := p.sendVotes(votes); err != nil {
+				return
+			}
+			p.Log().Trace("Sent votes", "count", len(votes))
+
+		case <-p.term:
+			return
+		}
+	}
+}
+
+// knownCache is a cache for known hashes.
+type knownCache struct {
+	hashes mapset.Set
+	max    int
+}
+
+// newKnownCache creates a new knownCache with a max capacity.
+func newKnownCache(max int) *knownCache {
+	return &knownCache{
+		max:    max,
+		hashes: mapset.NewSet(),
+	}
+}
+
+// add adds a list of elements to the set.
+func (k *knownCache) add(hashes ...common.Hash) {
+	for k.hashes.Cardinality() > max(0, k.max-len(hashes)) {
+		k.hashes.Pop()
+	}
+	for _, hash := range hashes {
+		k.hashes.Add(hash)
+	}
+}
+
+// contains returns whether the given item is in the set.
+func (k *knownCache) contains(hash common.Hash) bool {
+	return k.hashes.Contains(hash)
+}
diff --git a/eth/protocols/bsc/protocol.go b/eth/protocols/bsc/protocol.go
new file mode 100644
index 0000000000..a063531f07
--- /dev/null
+++ b/eth/protocols/bsc/protocol.go
@@ -0,0 +1,66 @@
+package bsc
+
+import (
+	"errors"
+
+	"github.com/ethereum/go-ethereum/core/types"
+	"github.com/ethereum/go-ethereum/rlp"
+)
+
+// Constants to match up protocol versions and messages
+const (
+	Bsc1 = 1
+)
+
+// ProtocolName is the official short name of the `bsc` protocol used during
+// devp2p capability negotiation.
+const ProtocolName = "bsc"
+
+// ProtocolVersions are the supported versions of the `bsc` protocol (first
+// is primary).
+var ProtocolVersions = []uint{Bsc1}
+
+// protocolLengths are the number of implemented message corresponding to
+// different protocol versions.
+var protocolLengths = map[uint]uint64{Bsc1: 2}
+
+// maxMessageSize is the maximum cap on the size of a protocol message.
+const maxMessageSize = 10 * 1024 * 1024
+
+const (
+	BscCapMsg = 0x00 // bsc capability msg used upon handshake
+	VotesMsg  = 0x01
+)
+
+var defaultExtra = []byte{0x00}
+
+var (
+	errNoBscCapMsg             = errors.New("no bsc capability message")
+	errMsgTooLarge             = errors.New("message too long")
+	errDecode                  = errors.New("invalid message")
+	errInvalidMsgCode          = errors.New("invalid message code")
+	errProtocolVersionMismatch = errors.New("protocol version mismatch")
+)
+
+// Packet represents a p2p message in the `bsc` protocol.
+type Packet interface {
+	Name() string // Name returns a string corresponding to the message type.
+	Kind() byte   // Kind returns the message type.
+}
+
+// BscCapPacket is the network packet for bsc capability message.
+type BscCapPacket struct {
+	ProtocolVersion uint
+	Extra           rlp.RawValue // for extension
+}
+
+// VotesPacket is the network packet for votes record.
+type VotesPacket struct {
+	Votes []*types.VoteEnvelope
+}
+
+func (*BscCapPacket) Name() string { return "BscCap" }
+func (*BscCapPacket) Kind() byte   { return BscCapMsg }
+
+func (*VotesPacket) Name() string { return "Votes" }
+func (*VotesPacket) Kind() byte   { return VotesMsg }
diff --git a/eth/protocols/bsc/protocol_test.go b/eth/protocols/bsc/protocol_test.go
new file mode 100644
index 0000000000..8597021411
--- /dev/null
+++ b/eth/protocols/bsc/protocol_test.go
@@ -0,0 +1,132 @@
+package bsc
+
+import (
+	"bytes"
+	"encoding/hex"
+	"testing"
+
+	"github.com/ethereum/go-ethereum/common"
+	"github.com/ethereum/go-ethereum/core/types"
+	"github.com/ethereum/go-ethereum/rlp"
+)
+
+// TestBsc1Messages tests the encoding of defined Bsc1 messages
+func TestBsc1Messages(t *testing.T) {
+	var (
+		BLSPublicKey = "b32d4d46a7127dcc865f0d30f2ee3dcd5983b686f4e3a9202afc8b608652001c9938906ae1ff1417486096e32511f1bc"
+		voteDataSet  = []types.VoteData{
+			{
+				SourceNumber: 0,
+				SourceHash:   common.HexToHash("0x6d3c66c5357ec91d5c43af47e234a939b22557cbb552dc45bebbceeed90fbe34"),
+				TargetNumber: 1,
+				TargetHash:   common.HexToHash("0xd0bc67b50915467ada963c35ee00950f664788e47da8139d8c178653171034f1"),
+			},
+			{
+				SourceNumber: 0,
+				SourceHash:   common.HexToHash("0x6d3c66c5357ec91d5c43af47e234a939b22557cbb552dc45bebbceeed90fbe34"),
+				TargetNumber: 2,
+				TargetHash:   common.HexToHash("0xc2d18d5a59d65da573f70c4d30448482418894e018b0d189db24ea4fd02d7aa1"),
+			},
+			{
+				SourceNumber: 0,
+				SourceHash:   common.HexToHash("0x6d3c66c5357ec91d5c43af47e234a939b22557cbb552dc45bebbceeed90fbe34"),
+				TargetNumber: 4,
+				TargetHash:   common.HexToHash("0xbd1bdaf8a8f5c00c464df2856a9e2ef23b8dcc906e6490d3cd295ebb5eb124c3"),
+			},
+			{
+				SourceNumber: 0,
+				SourceHash:   common.HexToHash("0x6d3c66c5357ec91d5c43af47e234a939b22557cbb552dc45bebbceeed90fbe34"),
+				TargetNumber: 8,
+				TargetHash:   common.HexToHash("0x3073782ecabb5ef0673e95962273482347a2c7b30a0a7124c664443d0a43f1e1"),
+			},
+			{
+				SourceNumber: 0,
+				SourceHash:   common.HexToHash("0x6d3c66c5357ec91d5c43af47e234a939b22557cbb552dc45bebbceeed90fbe34"),
+				TargetNumber: 16,
+				TargetHash:   common.HexToHash("0xc119833266327fd7e0cd929c6a847ae7d1689df5066dfdde2e52f51c0ecbcc3f"),
+			},
+			{
+				SourceNumber: 0,
+				SourceHash:   common.HexToHash("0x6d3c66c5357ec91d5c43af47e234a939b22557cbb552dc45bebbceeed90fbe34"),
+				TargetNumber: 32,
+				TargetHash:   common.HexToHash("0x3b5650bcb98381e463871a15a3f601cdc26843d76f4d3461333d7feae38a1786"),
+			},
+			{
+				SourceNumber: 0,
+				SourceHash:   common.HexToHash("0x6d3c66c5357ec91d5c43af47e234a939b22557cbb552dc45bebbceeed90fbe34"),
+				TargetNumber: 64,
+				TargetHash:   common.HexToHash("0x5e38b4d98904178d60d58f5bc1687b0c7df114a51f2007d3ee3e6e732539f130"),
+			},
+			{
+				SourceNumber: 0,
+				SourceHash:   common.HexToHash("0x6d3c66c5357ec91d5c43af47e234a939b22557cbb552dc45bebbceeed90fbe34"),
+				TargetNumber: 128,
+				TargetHash:   common.HexToHash("0xa4a64a7d511d3ff6982b5a79e9a485508477b98996c570a220f9daea0c7682f8"),
+			},
+			{
+				SourceNumber: 0,
+				SourceHash:   common.HexToHash("0x6d3c66c5357ec91d5c43af47e234a939b22557cbb552dc45bebbceeed90fbe34"),
+				TargetNumber: 256,
+				TargetHash:   common.HexToHash("0xd313672c2653fc13e75a9dafdcee93f444caf2cffb04585d3e306fd15418b7e2"),
+			},
+			{
+				SourceNumber: 0,
+				SourceHash:   common.HexToHash("0x6d3c66c5357ec91d5c43af47e234a939b22557cbb552dc45bebbceeed90fbe34"),
+				TargetNumber: 512,
+				TargetHash:   common.HexToHash("0x3c5fe2e5439ca7a7f1a3de7d5c0914c37261451c87654397dd45f207109839ae"),
+			},
+			{
+				SourceNumber: 0,
+				SourceHash:   common.HexToHash("0x6d3c66c5357ec91d5c43af47e234a939b22557cbb552dc45bebbceeed90fbe34"),
+				TargetNumber: 1024,
+				TargetHash:   common.HexToHash("0x088eeeb07acff0db3ae2585195e9fd23bdf54b55077cab87d1632b08dd2c043b"),
+			},
+		}
+		signatures = []string{
+			"91f8a39f99a0b3632d248e635ab0e7b5ff68071fa4def5c2df9f249db7d393c0ba89eb28a65f2a6ba836baddb961b9c312c70a87d130edf944b340649218335c91078cce808da75ff69f673bab3ecdf068c33b1ab147c54298056b19e9cc625d",
+			"a56cd257f9a4b4830c9bfadaa751c7b1d4e9c6899127c145987a55a7cfa0d1b7d114cb2523ea4e2efee0326cfc5a1cd912eaf7f0c4c0be3193677284533f1709fbd75471a9fb22aea358cdbf2e900628d7c504ce7245e8af6fdd1039dfa3c0bd",
+			"893f8aff7fc523a7aff006aaba71fbde5f1eee1f4683d405892ffb9ab9282a5dae01054210ff6873ee76f86b9afdef2e128932b26696e3f7e1de7fe7d3fdd1c41273912ff5d1002cba176dbf84e1fe2edb60b114129b89e1329a03f7d9843d04",
+			"b3585bf55f1e0d8bc0f544a386e6fc4ec37de52330f69b450f579050acda6279a8a38172ed2f01dfdb57cf7dd2a314970aa8a3168234cbd29adfc6a0efd080f57d7e195dafbf5b6db087e8b943aa634f797f8f6d4e5bf04681d7ce2218e59465",
+			"9366e823b456049cd10ed1aa8f02a58ce2fa4caea7e8c776d6aec9c42f4263b40b0f2d76cc55a598b378381f32ef33520d47e28707027c25e38eb971cddb379e0ded5e814ce70108d65855084a11484fd08447520b7ce79ac1e680020b243747",
+			"aafd383c9537d750358ea077d45476cf6c1541e717c690ebe5dc5442c2af732fba17b45c60b2c49de94f5121f318b6ae021c56ae06588c6552f1d5b87a166cb8050f287b528b20556033603f6a6649ccec4792c86ae5f6353cf6b7527ac40127",
+			"90d9dc467a64fe7852b2e0117806409a8f12a036849d69396282088f8d86adb3adcd46b1fde51b4630a6b64c2f8652f30a46609c49b33f50c9f4641e30900ee420f9b81b2ad59a2376dcf4e065ecf832fbf738ad5b73becd2f7add27e6c14d5f",
+			"8f7d6bc28626dc143208aaa7b97146510f01b1a108dead65f8fddf0ec07835bca91081f9e759656d52dd7d4adaac14220c8c62aa1dd09151fe8000ce4347b100ac496593058ae11b40c74b3049d38076d07301c9dc9586baf93d9c81b4e5d424",
+			"b6c17077217baa5930fb04e14b6ba7203b3c854e8f1363b48ad753d96db1b4ffed36d60d8b67e86f7f76504f0abefff80ed1e4f11ff192dbfc26a0f059f7b9f66f9e883fef208cc3f58c7ce49d8e854cf8a0e48c59c7407ebfe946cfd62bf3be",
+			"979b1d101e51731749c72fb160dd1245d69ebd6ca81c0519464d3bca9ec3db493cf4b45ebbb7f60fbd12f0705bd788000558bdedc335cedac2100169965b2794fae8a386b2e9ece86ea6952fadeb8501d9aad00e091713cc06d30c5885c3ecf0",
+			"8d035b04d8ef6c13117acc1ed9d0586a141f123494f21eeaaead5dd9f623933541b293eef403d2f3e8ede84f9dfe3dc10cbd3fa6bdf3e977dcf2d18a4dca84f8bd9b24fca8e7de4180b9aa6208ad6e756b1c81e98afc8e6994824b5c076857f8",
+		}
+
+		votesSet []*types.VoteEnvelope
+	)
+
+	// Init the vote data, taken from a local node
+	pubKeyBytes, _ := hex.DecodeString(BLSPublicKey)
+	{
+		for i, voteData := range voteDataSet {
+			vote := new(types.VoteEnvelope)
+			voteAddress := new(types.BLSPublicKey)
+			signature := new(types.BLSSignature)
+			sigBytes, _ := hex.DecodeString(signatures[i])
+			copy(voteAddress[:], pubKeyBytes)
+			copy(signature[:], sigBytes)
+			vote.VoteAddress = *voteAddress
+			vote.Signature = *signature
+			vote.Data = &voteData
+			votesSet = append(votesSet, vote)
+		}
+	}
+
+	for i, tc := range []struct {
+		message interface{}
+		want    []byte
+	}{
+		{
+			VotesPacket{votesSet},
+			common.FromHex("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"),
+		},
+	} {
+		if have, _ := rlp.EncodeToBytes(tc.message); !bytes.Equal(have, tc.want) {
+			t.Errorf("test %d, type %T, have\n\t%x\nwant\n\t%x", i, tc.message, have, tc.want)
+		}
+	}
+}
diff --git a/eth/protocols/diff/handler.go b/eth/protocols/diff/handler.go
index 18ec4e2541..4bbf24f6fe 100644
--- a/eth/protocols/diff/handler.go
+++ b/eth/protocols/diff/handler.go
@@ -101,7 +101,7 @@ func handleMessage(backend Backend, peer *Peer) error {
 	}
 	defer msg.Discard()
 	start := time.Now()
-	// Track the emount of time it takes to serve the request and run the handler
+	// Track the amount of time it takes to serve the request and run the handler
 	if metrics.Enabled {
 		h := fmt.Sprintf("%s/%s/%d/%#02x", p2p.HandleHistName, ProtocolName, peer.Version(), msg.Code)
 		defer func(start time.Time) {
diff --git a/eth/protocols/diff/handler_test.go b/eth/protocols/diff/handler_test.go
index 5244687331..17af5a0012 100644
--- a/eth/protocols/diff/handler_test.go
+++ b/eth/protocols/diff/handler_test.go
@@ -134,9 +134,9 @@ func testGetDiffLayers(t *testing.T, protocol uint) {
 	missDiffPackets := make([]FullDiffLayersPacket, 0)
 
 	for i := 0; i < 100; i++ {
-		number := uint64(rand.Int63n(1024))
-		if number == 0 {
-			continue
+		// Find a non 0 random number
+		var number uint64
+		for ; number == 0; number = uint64(rand.Int63n(1024)) {
 		}
 		foundHash := backend.chain.GetCanonicalHash(number + 1024)
 		missHash := backend.chain.GetCanonicalHash(number)
diff --git a/eth/protocols/eth/handler.go b/eth/protocols/eth/handler.go
index 81d45d8b8f..9eb949f139 100644
--- a/eth/protocols/eth/handler.go
+++ b/eth/protocols/eth/handler.go
@@ -195,9 +195,6 @@ func handleMessage(backend Backend, peer *Peer) error {
 	defer msg.Discard()
 
 	var handlers = eth66
-	//if peer.Version() >= ETH67 { // Left in as a sample when new protocol is added
-	//	handlers = eth67
-	//}
 
 	// Track the amount of time it takes to serve the request and run the handler
 	if metrics.Enabled {
diff --git a/eth/protocols/eth/handler_test.go b/eth/protocols/eth/handler_test.go
index 55e612b801..b12be49bbf 100644
--- a/eth/protocols/eth/handler_test.go
+++ b/eth/protocols/eth/handler_test.go
@@ -94,8 +94,8 @@ func (b *testBackend) Chain() *core.BlockChain { return b.chain }
 func (b *testBackend) TxPool() TxPool          { return b.txpool }
 
 func (b *testBackend) RunPeer(peer *Peer, handler Handler) error {
-	// Normally the backend would do peer mainentance and handshakes. All that
-	// is omitted and we will just give control back to the handler.
+	// Normally the backend would do peer maintenance and handshakes. All that
+	// is omitted, and we will just give control back to the handler.
 	return handler(peer)
 }
 func (b *testBackend) PeerInfo(enode.ID) interface{} { panic("not implemented") }
@@ -247,7 +247,7 @@ func testGetBlockHeaders(t *testing.T, protocol uint) {
 				backend.chain.GetBlockByNumber(1).Hash(),
 			},
 		},
-		// Check that non existing headers aren't returned
+		// Check that non-existing headers aren't returned
 		{
 			&GetBlockHeadersPacket{Origin: HashOrNumber{Hash: unknown}, Amount: 1},
 			[]common.Hash{},
diff --git a/eth/protocols/eth/peer.go b/eth/protocols/eth/peer.go
index 8bf973f9c3..b39aa56eee 100644
--- a/eth/protocols/eth/peer.go
+++ b/eth/protocols/eth/peer.go
@@ -122,7 +122,6 @@ func NewPeer(version uint, p *p2p.Peer, rw p2p.MsgReadWriter, txpool TxPool) *Pe
 	go peer.broadcastTransactions()
 	go peer.announceTransactions()
 	go peer.dispatcher()
-
 	return peer
 }
 
@@ -149,7 +148,7 @@ func (p *Peer) ID() string {
 	return p.id
 }
 
-// Version retrieves the peer's negoatiated `eth` protocol version.
+// Version retrieves the peer's negotiated `eth` protocol version.
 func (p *Peer) Version() uint {
 	return p.version
 }
@@ -324,6 +323,11 @@ func (p *Peer) AsyncSendNewBlock(block *types.Block, td *big.Int) {
 	}
 }
 
+// SendBlockHeaders sends a batch of block headers to the remote peer.
+func (p *Peer) SendBlockHeaders(headers []*types.Header) error {
+	return p2p.Send(p.rw, BlockHeadersMsg, BlockHeadersPacket(headers))
+}
+
 // ReplyBlockHeaders is the eth/66 version of SendBlockHeaders.
 func (p *Peer) ReplyBlockHeadersRLP(id uint64, headers []rlp.RawValue) error {
 	return p2p.Send(p.rw, BlockHeadersMsg, &BlockHeadersRLPPacket66{
diff --git a/eth/protocols/eth/protocol.go b/eth/protocols/eth/protocol.go
index 66ff9220cc..3e171d6f3e 100644
--- a/eth/protocols/eth/protocol.go
+++ b/eth/protocols/eth/protocol.go
@@ -202,7 +202,7 @@ func (hn *HashOrNumber) DecodeRLP(s *rlp.Stream) error {
 // BlockHeadersPacket represents a block header response.
 type BlockHeadersPacket []*types.Header
 
-// BlockHeadersPacket represents a block header response over eth/66.
+// BlockHeadersPacket66 represents a block header response over eth/66.
 type BlockHeadersPacket66 struct {
 	RequestId uint64
 	BlockHeadersPacket
@@ -240,7 +240,7 @@ func (request *NewBlockPacket) sanityCheck() error {
 // GetBlockBodiesPacket represents a block body query.
 type GetBlockBodiesPacket []common.Hash
 
-// GetBlockBodiesPacket represents a block body query over eth/66.
+// GetBlockBodiesPacket66 represents a block body query over eth/66.
 type GetBlockBodiesPacket66 struct {
 	RequestId uint64
 	GetBlockBodiesPacket
@@ -249,7 +249,7 @@ type GetBlockBodiesPacket66 struct {
 // BlockBodiesPacket is the network packet for block content distribution.
 type BlockBodiesPacket []*BlockBody
 
-// BlockBodiesPacket is the network packet for block content distribution over eth/66.
+// BlockBodiesPacket66 is the network packet for block content distribution over eth/66.
 type BlockBodiesPacket66 struct {
 	RequestId uint64
 	BlockBodiesPacket
@@ -288,7 +288,7 @@ func (p *BlockBodiesPacket) Unpack() ([][]*types.Transaction, [][]*types.Header)
 // GetNodeDataPacket represents a trie node data query.
 type GetNodeDataPacket []common.Hash
 
-// GetNodeDataPacket represents a trie node data query over eth/66.
+// GetNodeDataPacket66 represents a trie node data query over eth/66.
 type GetNodeDataPacket66 struct {
 	RequestId uint64
 	GetNodeDataPacket
@@ -297,7 +297,7 @@ type GetNodeDataPacket66 struct {
 // NodeDataPacket is the network packet for trie node data distribution.
 type NodeDataPacket [][]byte
 
-// NodeDataPacket is the network packet for trie node data distribution over eth/66.
+// NodeDataPacket66 is the network packet for trie node data distribution over eth/66.
 type NodeDataPacket66 struct {
 	RequestId uint64
 	NodeDataPacket
@@ -306,7 +306,7 @@ type NodeDataPacket66 struct {
 // GetReceiptsPacket represents a block receipts query.
 type GetReceiptsPacket []common.Hash
 
-// GetReceiptsPacket represents a block receipts query over eth/66.
+// GetReceiptsPacket66 represents a block receipts query over eth/66.
 type GetReceiptsPacket66 struct {
 	RequestId uint64
 	GetReceiptsPacket
@@ -315,7 +315,7 @@ type GetReceiptsPacket66 struct {
 // ReceiptsPacket is the network packet for block receipts distribution.
 type ReceiptsPacket [][]*types.Receipt
 
-// ReceiptsPacket is the network packet for block receipts distribution over eth/66.
+// ReceiptsPacket66 is the network packet for block receipts distribution over eth/66.
 type ReceiptsPacket66 struct {
 	RequestId uint64
 	ReceiptsPacket
@@ -324,7 +324,7 @@ type ReceiptsPacket66 struct {
 // ReceiptsRLPPacket is used for receipts, when we already have it encoded
 type ReceiptsRLPPacket []rlp.RawValue
 
-// ReceiptsPacket66 is the eth-66 version of ReceiptsRLPPacket
+// ReceiptsRLPPacket66 is the eth-66 version of ReceiptsRLPPacket
 type ReceiptsRLPPacket66 struct {
 	RequestId uint64
 	ReceiptsRLPPacket
@@ -344,13 +344,13 @@ type GetPooledTransactionsPacket66 struct {
 // PooledTransactionsPacket is the network packet for transaction distribution.
 type PooledTransactionsPacket []*types.Transaction
 
-// PooledTransactionsPacket is the network packet for transaction distribution over eth/66.
+// PooledTransactionsPacket66 is the network packet for transaction distribution over eth/66.
 type PooledTransactionsPacket66 struct {
 	RequestId uint64
 	PooledTransactionsPacket
 }
 
-// PooledTransactionsPacket is the network packet for transaction distribution, used
+// PooledTransactionsRLPPacket is the network packet for transaction distribution, used
 // in the cases we already have them in rlp-encoded form
 type PooledTransactionsRLPPacket []rlp.RawValue
 
diff --git a/eth/sync.go b/eth/sync.go
index 22e2b293fe..a32d305c77 100644
--- a/eth/sync.go
+++ b/eth/sync.go
@@ -60,6 +60,15 @@ func (h *handler) syncTransactions(p *eth.Peer) {
 	p.AsyncSendPooledTransactionHashes(hashes)
 }
 
+// syncVotes starts sending all currently pending votes to the given peer.
+func (h *handler) syncVotes(p *bscPeer) {
+	votes := h.votepool.GetVotes()
+	if len(votes) == 0 {
+		return
+	}
+	p.AsyncSendVotes(votes)
+}
+
 // chainSyncer coordinates blockchain sync components.
 type chainSyncer struct {
 	handler     *handler
diff --git a/eth/tracers/js/tracer_test.go b/eth/tracers/js/tracer_test.go
index 4389004dcc..b58b5ae94a 100644
--- a/eth/tracers/js/tracer_test.go
+++ b/eth/tracers/js/tracer_test.go
@@ -103,15 +103,15 @@ func TestTracer(t *testing.T) {
 		{ // tests that we don't panic on bad arguments to memory access
 			code: "{depths: [], step: function(log) { this.depths.push(log.memory.slice(-1,-2)); }, fault: function() {}, result: function() { return this.depths; }}",
 			want: ``,
-			fail: "Tracer accessed out of bound memory: offset -1, end -2 at step (<eval>:1:53(15))    in server-side tracer function 'step'",
+			fail: "Tracer accessed out of bound memory: offset -1, end -2 at step (<eval>:1:53(13))    in server-side tracer function 'step'",
 		}, { // tests that we don't panic on bad arguments to stack peeks
 			code: "{depths: [], step: function(log) { this.depths.push(log.stack.peek(-1)); }, fault: function() {}, result: function() { return this.depths; }}",
 			want: ``,
-			fail: "Tracer accessed out of bound stack: size 0, index -1 at step (<eval>:1:53(13))    in server-side tracer function 'step'",
+			fail: "Tracer accessed out of bound stack: size 0, index -1 at step (<eval>:1:53(11))    in server-side tracer function 'step'",
 		}, { //  tests that we don't panic on bad arguments to memory getUint
 			code: "{ depths: [], step: function(log, db) { this.depths.push(log.memory.getUint(-64));}, fault: function() {}, result: function() { return this.depths; }}",
 			want: ``,
-			fail: "Tracer accessed out of bound memory: available 0, offset -64, size 32 at step (<eval>:1:58(13))    in server-side tracer function 'step'",
+			fail: "Tracer accessed out of bound memory: available 0, offset -64, size 32 at step (<eval>:1:58(11))    in server-side tracer function 'step'",
 		}, { // tests some general counting
 			code: "{count: 0, step: function() { this.count += 1; }, fault: function() {}, result: function() { return this.count; }}",
 			want: `3`,
diff --git a/ethclient/ethclient.go b/ethclient/ethclient.go
index db388a3d9d..745a371e6a 100644
--- a/ethclient/ethclient.go
+++ b/ethclient/ethclient.go
@@ -29,6 +29,7 @@ import (
 	"github.com/ethereum/go-ethereum/common/hexutil"
 	"github.com/ethereum/go-ethereum/core"
 	"github.com/ethereum/go-ethereum/core/types"
+	"github.com/ethereum/go-ethereum/internal/ethapi"
 	"github.com/ethereum/go-ethereum/rpc"
 )
 
@@ -370,6 +371,17 @@ func (ec *Client) SubscribeNewHead(ctx context.Context, ch chan<- *types.Header)
 	return ec.c.EthSubscribe(ctx, ch, "newHeads")
 }
 
+// SubscribeNewFinalizedHeader subscribes to notifications about the current blockchain finalized header
+// on the given channel.
+func (ec *Client) SubscribeNewFinalizedHeader(ctx context.Context, ch chan<- *types.Header) (ethereum.Subscription, error) {
+	return ec.c.EthSubscribe(ctx, ch, "newFinalizedHeaders")
+}
+
+// SubscribeNewVotes subscribes to notifications about the new votes into vote pool
+func (ec *Client) SubscribeNewVotes(ctx context.Context, ch chan<- *types.VoteEnvelope) (ethereum.Subscription, error) {
+	return ec.c.EthSubscribe(ctx, ch, "newVotes")
+}
+
 // State Access
 
 // NetworkID returns the network ID (also known as the chain ID) for this chain.
@@ -571,6 +583,18 @@ func (ec *Client) SendTransaction(ctx context.Context, tx *types.Transaction) er
 	return ec.c.CallContext(ctx, nil, "eth_sendRawTransaction", hexutil.Encode(data))
 }
 
+// SendTransactionConditional injects a signed transaction into the pending pool for execution.
+//
+// If the transaction was a contract creation use the TransactionReceipt method to get the
+// contract address after the transaction has been mined.
+func (ec *Client) SendTransactionConditional(ctx context.Context, tx *types.Transaction, opts ethapi.TransactionOpts) error {
+	data, err := tx.MarshalBinary()
+	if err != nil {
+		return err
+	}
+	return ec.c.CallContext(ctx, nil, "eth_sendRawTransactionConditional", hexutil.Encode(data), opts)
+}
+
 func toBlockNumArg(number *big.Int) string {
 	if number == nil {
 		return "latest"
@@ -579,6 +603,14 @@ func toBlockNumArg(number *big.Int) string {
 	if number.Cmp(pending) == 0 {
 		return "pending"
 	}
+	finalized := big.NewInt(int64(rpc.FinalizedBlockNumber))
+	if number.Cmp(finalized) == 0 {
+		return "finalized"
+	}
+	safe := big.NewInt(int64(rpc.SafeBlockNumber))
+	if number.Cmp(safe) == 0 {
+		return "safe"
+	}
 	return hexutil.EncodeBig(number)
 }
 
diff --git a/ethclient/ethclient_test.go b/ethclient/ethclient_test.go
index b488487620..355905d950 100644
--- a/ethclient/ethclient_test.go
+++ b/ethclient/ethclient_test.go
@@ -36,6 +36,7 @@ import (
 	"github.com/ethereum/go-ethereum/eth"
 	"github.com/ethereum/go-ethereum/eth/ethconfig"
 	"github.com/ethereum/go-ethereum/ethdb/memorydb"
+	"github.com/ethereum/go-ethereum/internal/ethapi"
 	"github.com/ethereum/go-ethereum/node"
 	"github.com/ethereum/go-ethereum/params"
 	"github.com/ethereum/go-ethereum/rpc"
@@ -376,6 +377,9 @@ func TestEthClient(t *testing.T) {
 		"TestDiffAccounts": {
 			func(t *testing.T) { testDiffAccounts(t, client) },
 		},
+		"TestSendTransactionConditional": {
+			func(t *testing.T) { testSendTransactionConditional(t, client) },
+		},
 		// DO not have TestAtFunctions now, because we do not have pending block now
 	}
 
@@ -660,3 +664,45 @@ func testDiffAccounts(t *testing.T, client *rpc.Client) {
 		}
 	}
 }
+
+func testSendTransactionConditional(t *testing.T, client *rpc.Client) {
+	ec := NewClient(client)
+
+	if err := sendTransactionConditional(ec); err != nil {
+		t.Fatalf("error: %v", err)
+	}
+}
+
+func sendTransactionConditional(ec *Client) error {
+	chainID, err := ec.ChainID(context.Background())
+	if err != nil {
+		return err
+	}
+
+	nonce, err := ec.PendingNonceAt(context.Background(), testAddr)
+	if err != nil {
+		return err
+	}
+
+	signer := types.LatestSignerForChainID(chainID)
+
+	tx, err := types.SignNewTx(testKey, signer, &types.LegacyTx{
+		Nonce:    nonce,
+		To:       &common.Address{2},
+		Value:    big.NewInt(1),
+		Gas:      22000,
+		GasPrice: big.NewInt(params.InitialBaseFee),
+	})
+	if err != nil {
+		return err
+	}
+
+	root := common.HexToHash("0x56e81f171bcc55a6ff8345e692c0f86e5b48e01b996cadc001622fb5e363b421")
+	return ec.SendTransactionConditional(context.Background(), tx, ethapi.TransactionOpts{
+		KnownAccounts: map[common.Address]ethapi.AccountStorage{
+			testAddr: ethapi.AccountStorage{
+				StorageRoot: &root,
+			},
+		},
+	})
+}
diff --git a/ethclient/gethclient/gethclient.go b/ethclient/gethclient/gethclient.go
index 7af2bf45d7..3795b182e1 100644
--- a/ethclient/gethclient/gethclient.go
+++ b/ethclient/gethclient/gethclient.go
@@ -188,6 +188,14 @@ func toBlockNumArg(number *big.Int) string {
 	if number.Cmp(pending) == 0 {
 		return "pending"
 	}
+	finalized := big.NewInt(int64(rpc.FinalizedBlockNumber))
+	if number.Cmp(finalized) == 0 {
+		return "finalized"
+	}
+	safe := big.NewInt(int64(rpc.SafeBlockNumber))
+	if number.Cmp(safe) == 0 {
+		return "safe"
+	}
 	return hexutil.EncodeBig(number)
 }
 
diff --git a/go.mod b/go.mod
index 8405c9661a..8de86c0b9f 100644
--- a/go.mod
+++ b/go.mod
@@ -4,123 +4,276 @@ go 1.19
 
 require (
 	github.com/Azure/azure-storage-blob-go v0.7.0
-	github.com/VictoriaMetrics/fastcache v1.6.0
-	github.com/aws/aws-sdk-go-v2 v1.2.0
+	github.com/VictoriaMetrics/fastcache v1.12.0
+	github.com/aws/aws-sdk-go-v2 v1.17.8
 	github.com/aws/aws-sdk-go-v2/config v1.1.1
 	github.com/aws/aws-sdk-go-v2/credentials v1.1.1
 	github.com/aws/aws-sdk-go-v2/service/route53 v1.1.1
 	github.com/bnb-chain/ics23 v0.1.0
-	github.com/cespare/cp v0.1.0
+	github.com/btcsuite/btcd/btcec/v2 v2.3.2
+	github.com/cespare/cp v1.1.1
 	github.com/cloudflare/cloudflare-go v0.14.0
+	github.com/cometbft/cometbft v0.37.0
 	github.com/consensys/gnark-crypto v0.4.1-0.20210426202927-39ac3d4b3f1f
 	github.com/davecgh/go-spew v1.1.1
 	github.com/deckarep/golang-set v1.8.0
 	github.com/deepmap/oapi-codegen v1.8.2 // indirect
-	github.com/docker/docker v1.6.1
-	github.com/dop251/goja v0.0.0-20220405120441-9037c2b61cbf
-	github.com/edsrzf/mmap-go v1.0.0
-	github.com/fatih/color v1.7.0
+	github.com/docker/docker v20.10.19+incompatible
+	github.com/dop251/goja v0.0.0-20230122112309-96b1610dd4f7
+	github.com/edsrzf/mmap-go v1.1.0
+	github.com/etcd-io/bbolt v1.3.3 // indirect
+	github.com/fatih/color v1.13.0
+	github.com/fatih/structs v1.1.0
 	github.com/fjl/memsize v0.0.0-20190710130421-bcb5799ab5e5
-	github.com/gballet/go-libpcsclite v0.0.0-20190607065134-2772fd86a8ff
-	github.com/go-stack/stack v1.8.0
+	github.com/gballet/go-libpcsclite v0.0.0-20191108122812-4678299bea08
+	github.com/go-stack/stack v1.8.1
 	github.com/golang/protobuf v1.5.2
 	github.com/golang/snappy v0.0.4
 	github.com/google/gofuzz v1.2.0
-	github.com/google/pprof v0.0.0-20220829040838-70bd9ae97f40
-	github.com/google/uuid v1.1.5
+	github.com/google/pprof v0.0.0-20221203041831-ce31453925ec
+	github.com/google/uuid v1.3.0
 	github.com/gorilla/websocket v1.5.0
 	github.com/graph-gophers/graphql-go v1.3.0
 	github.com/hashicorp/go-bexpr v0.1.10
 	github.com/hashicorp/golang-lru v0.5.5-0.20210104140557-80c98217689d
 	github.com/holiman/bloomfilter/v2 v2.0.3
-	github.com/holiman/uint256 v1.2.0
+	github.com/holiman/uint256 v1.2.1
 	github.com/huin/goupnp v1.0.3
 	github.com/influxdata/influxdb v1.8.3
 	github.com/influxdata/influxdb-client-go/v2 v2.4.0
 	github.com/jackpal/go-nat-pmp v1.0.2
 	github.com/jedisct1/go-minisign v0.0.0-20190909160543-45766022959e
+	github.com/jmhodges/levigo v1.0.0 // indirect
 	github.com/julienschmidt/httprouter v1.3.0
 	github.com/karalabe/usb v0.0.2
-	github.com/mattn/go-colorable v0.1.8
-	github.com/mattn/go-isatty v0.0.12
+	github.com/logrusorgru/aurora v2.0.3+incompatible
+	github.com/mattn/go-colorable v0.1.13
+	github.com/mattn/go-isatty v0.0.16
 	github.com/naoina/toml v0.1.2-0.20170918210437-9fafd6967416
 	github.com/olekukonko/tablewriter v0.0.5
 	github.com/panjf2000/ants/v2 v2.4.5
-	github.com/peterh/liner v1.1.1-0.20190123174540-a2c9a5303de7
-	github.com/pkg/errors v0.9.1 // indirect
-	github.com/prometheus/tsdb v0.7.1
+	github.com/peterh/liner v1.2.0
+	github.com/pkg/errors v0.9.1
+	github.com/prometheus/tsdb v0.10.0
+	github.com/prysmaticlabs/prysm/v3 v3.2.1
 	github.com/rjeczalik/notify v0.9.1
-	github.com/rs/cors v1.7.0
+	github.com/rs/cors v1.8.2
 	github.com/shirou/gopsutil v3.21.11+incompatible
-	github.com/status-im/keycard-go v0.0.0-20190316090335-8537d3370df4
+	github.com/status-im/keycard-go v0.2.0
 	github.com/stretchr/testify v1.8.1
-	github.com/syndtr/goleveldb v1.0.1-0.20210819022825-2ae1ddf74ef7
+	github.com/syndtr/goleveldb v1.0.1-0.20220721030215-126854af5e6d
 	github.com/tendermint/go-amino v0.14.1
 	github.com/tendermint/iavl v0.12.0
-	github.com/tendermint/tendermint v0.31.12
-	github.com/tyler-smith/go-bip39 v1.0.1-0.20181017060643-dbb3b84ba2ef
+	github.com/tendermint/tendermint v0.31.15
+	github.com/tidwall/wal v1.1.7
+	github.com/tyler-smith/go-bip39 v1.1.0
+	github.com/wealdtech/go-eth2-wallet-encryptor-keystorev4 v1.1.3
+	github.com/willf/bitset v1.1.3
 	golang.org/x/crypto v0.5.0
 	golang.org/x/sync v0.1.0
-	golang.org/x/sys v0.4.0
-	golang.org/x/text v0.6.0
-	golang.org/x/time v0.0.0-20210220033141-f8bda1e9f3ba
-	golang.org/x/tools v0.1.12
+	golang.org/x/sys v0.6.0
+	golang.org/x/text v0.8.0
+	golang.org/x/time v0.0.0-20220922220347-f3bd1da661af
+	golang.org/x/tools v0.6.0
 	gopkg.in/natefinch/npipe.v2 v2.0.0-20160621034901-c1b8fa8bdcce
 	gopkg.in/urfave/cli.v1 v1.20.0
 )
 
 require (
-	github.com/btcsuite/btcd/btcec/v2 v2.3.2
-	github.com/fatih/structs v1.1.0
-)
-
-require (
+	contrib.go.opencensus.io/exporter/jaeger v0.2.1 // indirect
 	github.com/Azure/azure-pipeline-go v0.2.2 // indirect
-	github.com/Azure/go-autorest/autorest/adal v0.8.0 // indirect
+	github.com/BurntSushi/toml v1.2.1 // indirect
+	github.com/aristanetworks/goarista v0.0.0-20200805130819-fd197cf57d96 // indirect
 	github.com/aws/aws-sdk-go-v2/feature/ec2/imds v1.0.2 // indirect
+	github.com/aws/aws-sdk-go-v2/internal/ini v1.3.33 // indirect
 	github.com/aws/aws-sdk-go-v2/service/internal/presigned-url v1.0.2 // indirect
 	github.com/aws/aws-sdk-go-v2/service/sso v1.1.1 // indirect
 	github.com/aws/aws-sdk-go-v2/service/sts v1.1.1 // indirect
-	github.com/aws/smithy-go v1.1.0 // indirect
+	github.com/aws/smithy-go v1.13.5 // indirect
+	github.com/benbjohnson/clock v1.3.0 // indirect
 	github.com/beorn7/perks v1.0.1 // indirect
-	github.com/cespare/xxhash/v2 v2.1.2 // indirect
-	github.com/decred/dcrd/dcrec/secp256k1/v4 v4.0.1 // indirect
-	github.com/dlclark/regexp2 v1.4.1-0.20201116162257-a2a8dda75c91 // indirect
-	github.com/etcd-io/bbolt v1.3.3 // indirect
-	github.com/fortytw2/leaktest v1.3.0 // indirect
-	github.com/go-kit/kit v0.9.0 // indirect
+	github.com/cespare/xxhash v1.1.0 // indirect
+	github.com/cespare/xxhash/v2 v2.2.0 // indirect
+	github.com/chzyer/readline v1.5.0 // indirect
+	github.com/containerd/cgroups v1.0.4 // indirect
+	github.com/coreos/go-systemd/v22 v22.5.0 // indirect
+	github.com/cosmos/gogoproto v1.4.1 // indirect
+	github.com/cpuguy83/go-md2man/v2 v2.0.2 // indirect
+	github.com/davidlazar/go-crypto v0.0.0-20200604182044-b73af7476f6c // indirect
+	github.com/decred/dcrd/dcrec/secp256k1/v4 v4.1.0 // indirect
+	github.com/dgraph-io/ristretto v0.0.4-0.20210318174700-74754f61e018 // indirect
+	github.com/dlclark/regexp2 v1.7.0 // indirect
+	github.com/docker/go-units v0.5.0 // indirect
+	github.com/dustin/go-humanize v1.0.0 // indirect
+	github.com/elastic/gosigar v0.14.2 // indirect
+	github.com/ferranbt/fastssz v0.0.0-20210905181407-59cf6761a7d5 // indirect
+	github.com/flynn/noise v1.0.0 // indirect
+	github.com/francoispqt/gojay v1.2.13 // indirect
+	github.com/fsnotify/fsnotify v1.6.0 // indirect
+	github.com/go-kit/kit v0.12.0 // indirect
+	github.com/go-kit/log v0.2.1 // indirect
 	github.com/go-logfmt/logfmt v0.5.1 // indirect
+	github.com/go-logr/logr v1.2.3 // indirect
 	github.com/go-ole/go-ole v1.2.6 // indirect
+	github.com/go-playground/locales v0.14.0 // indirect
+	github.com/go-playground/universal-translator v0.18.0 // indirect
+	github.com/go-playground/validator/v10 v10.11.1 // indirect
 	github.com/go-sourcemap/sourcemap v2.1.3+incompatible // indirect
+	github.com/go-task/slim-sprig v0.0.0-20210107165309-348f09dbbbc0 // indirect
+	github.com/godbus/dbus/v5 v5.1.0 // indirect
 	github.com/gogo/protobuf v1.3.2 // indirect
+	github.com/golang-jwt/jwt/v4 v4.3.0 // indirect
+	github.com/golang/groupcache v0.0.0-20210331224755-41bb18bfe9da // indirect
+	github.com/golang/mock v1.6.0 // indirect
+	github.com/google/go-cmp v0.5.9 // indirect
+	github.com/google/gopacket v1.1.19 // indirect
+	github.com/gorilla/mux v1.8.0 // indirect
+	github.com/grpc-ecosystem/go-grpc-middleware v1.3.0 // indirect
+	github.com/grpc-ecosystem/go-grpc-prometheus v1.2.0 // indirect
+	github.com/grpc-ecosystem/grpc-gateway/v2 v2.0.1 // indirect
+	github.com/gtank/merlin v0.1.1 // indirect
+	github.com/herumi/bls-eth-go-binary v0.0.0-20210917013441-d37c07cfda4e // indirect
 	github.com/influxdata/line-protocol v0.0.0-20210311194329-9aa0e372d097 // indirect
-	github.com/jmhodges/levigo v1.0.0 // indirect
-	github.com/kylelemons/godebug v1.1.0 // indirect
+	github.com/ipfs/go-cid v0.3.2 // indirect
+	github.com/ipfs/go-log v1.0.5 // indirect
+	github.com/ipfs/go-log/v2 v2.5.1 // indirect
+	github.com/jbenet/go-temp-err-catcher v0.1.0 // indirect
+	github.com/json-iterator/go v1.1.12 // indirect
+	github.com/juju/ansiterm v0.0.0-20180109212912-720a0952cc2a // indirect
+	github.com/k0kubun/go-ansi v0.0.0-20180517002512-3bf9e2903213 // indirect
+	github.com/klauspost/compress v1.15.15 // indirect
+	github.com/klauspost/cpuid/v2 v2.2.1 // indirect
+	github.com/koron/go-ssdp v0.0.3 // indirect
+	github.com/kr/pretty v0.3.1 // indirect
+	github.com/kr/text v0.2.0 // indirect
+	github.com/leodido/go-urn v1.2.1 // indirect
+	github.com/libp2p/go-buffer-pool v0.1.0 // indirect
+	github.com/libp2p/go-cidranger v1.1.0 // indirect
+	github.com/libp2p/go-flow-metrics v0.1.0 // indirect
+	github.com/libp2p/go-libp2p v0.24.0 // indirect
+	github.com/libp2p/go-libp2p-asn-util v0.2.0 // indirect
+	github.com/libp2p/go-libp2p-pubsub v0.8.0 // indirect
+	github.com/libp2p/go-mplex v0.7.0 // indirect
+	github.com/libp2p/go-msgio v0.2.0 // indirect
+	github.com/libp2p/go-nat v0.1.0 // indirect
+	github.com/libp2p/go-netroute v0.2.1 // indirect
+	github.com/libp2p/go-openssl v0.1.0 // indirect
+	github.com/libp2p/go-reuseport v0.2.0 // indirect
+	github.com/libp2p/go-yamux/v4 v4.0.0 // indirect
+	github.com/lucas-clemente/quic-go v0.31.0 // indirect
+	github.com/lunixbochs/vtclean v1.0.0 // indirect
+	github.com/manifoldco/promptui v0.7.0 // indirect
+	github.com/marten-seemann/qtls-go1-18 v0.1.3 // indirect
+	github.com/marten-seemann/qtls-go1-19 v0.1.1 // indirect
+	github.com/marten-seemann/tcp v0.0.0-20210406111302-dfbc87cc63fd // indirect
 	github.com/mattn/go-ieproxy v0.0.0-20190702010315-6dee0af9227d // indirect
-	github.com/mattn/go-runewidth v0.0.9 // indirect
-	github.com/matttproud/golang_protobuf_extensions v1.0.1 // indirect
-	github.com/mitchellh/mapstructure v1.4.1 // indirect
+	github.com/mattn/go-pointer v0.0.1 // indirect
+	github.com/mattn/go-runewidth v0.0.14 // indirect
+	github.com/matttproud/golang_protobuf_extensions v1.0.4 // indirect
+	github.com/miekg/dns v1.1.50 // indirect
+	github.com/mikioh/tcpinfo v0.0.0-20190314235526-30a79bb1804b // indirect
+	github.com/mikioh/tcpopt v0.0.0-20190314235656-172688c1accc // indirect
+	github.com/mimoo/StrobeGo v0.0.0-20210601165009-122bf33a46e0 // indirect
+	github.com/minio/highwayhash v1.0.2 // indirect
+	github.com/minio/sha256-simd v1.0.0 // indirect
+	github.com/mitchellh/colorstring v0.0.0-20190213212951-d06e56a500db // indirect
+	github.com/mitchellh/mapstructure v1.5.0 // indirect
 	github.com/mitchellh/pointerstructure v1.2.0 // indirect
+	github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd // indirect
+	github.com/modern-go/reflect2 v1.0.2 // indirect
+	github.com/mohae/deepcopy v0.0.0-20170929034955-c48cc78d4826 // indirect
+	github.com/mr-tron/base58 v1.2.0 // indirect
+	github.com/multiformats/go-base32 v0.1.0 // indirect
+	github.com/multiformats/go-base36 v0.2.0 // indirect
+	github.com/multiformats/go-multiaddr v0.8.0 // indirect
+	github.com/multiformats/go-multiaddr-dns v0.3.1 // indirect
+	github.com/multiformats/go-multiaddr-fmt v0.1.0 // indirect
+	github.com/multiformats/go-multibase v0.1.1 // indirect
+	github.com/multiformats/go-multicodec v0.7.0 // indirect
+	github.com/multiformats/go-multihash v0.2.1 // indirect
+	github.com/multiformats/go-multistream v0.3.3 // indirect
+	github.com/multiformats/go-varint v0.0.7 // indirect
 	github.com/naoina/go-stringutil v0.1.0 // indirect
-	github.com/opentracing/opentracing-go v1.1.0 // indirect
+	github.com/onsi/ginkgo/v2 v2.5.1 // indirect
+	github.com/opencontainers/runtime-spec v1.0.2 // indirect
+	github.com/opentracing/opentracing-go v1.2.0 // indirect
+	github.com/patrickmn/go-cache v2.1.0+incompatible // indirect
+	github.com/pbnjay/memory v0.0.0-20210728143218-7b4eea64cf58 // indirect
+	github.com/petermattis/goid v0.0.0-20180202154549-b0b1615b78e5 // indirect
 	github.com/pmezard/go-difflib v1.0.0 // indirect
 	github.com/prometheus/client_golang v1.14.0 // indirect
 	github.com/prometheus/client_model v0.3.0 // indirect
-	github.com/prometheus/common v0.37.0 // indirect
-	github.com/prometheus/procfs v0.8.0 // indirect
-	github.com/rcrowley/go-metrics v0.0.0-20190826022208-cac0b30c2563 // indirect
-	github.com/tklauser/go-sysconf v0.3.5 // indirect
-	github.com/tklauser/numcpus v0.2.2 // indirect
+	github.com/prometheus/common v0.39.0 // indirect
+	github.com/prometheus/procfs v0.9.0 // indirect
+	github.com/prometheus/prom2json v1.3.0 // indirect
+	github.com/prysmaticlabs/eth2-types v0.0.0-20210303084904-c9735a06829d // indirect
+	github.com/prysmaticlabs/fastssz v0.0.0-20220628121656-93dfe28febab // indirect
+	github.com/prysmaticlabs/go-bitfield v0.0.0-20210809151128-385d8c5e3fb7 // indirect
+	github.com/prysmaticlabs/gohashtree v0.0.2-alpha // indirect
+	github.com/prysmaticlabs/prombbolt v0.0.0-20210126082820-9b7adba6db7c // indirect
+	github.com/prysmaticlabs/prysm v0.0.0-20220124113610-e26cde5e091b // indirect
+	github.com/r3labs/sse v0.0.0-20210224172625-26fe804710bc // indirect
+	github.com/raulk/go-watchdog v1.3.0 // indirect
+	github.com/rcrowley/go-metrics v0.0.0-20201227073835-cf1acfcdf475 // indirect
+	github.com/rivo/uniseg v0.4.3 // indirect
+	github.com/rogpeppe/go-internal v1.9.0 // indirect
+	github.com/russross/blackfriday/v2 v2.1.0 // indirect
+	github.com/sasha-s/go-deadlock v0.3.1 // indirect
+	github.com/schollz/progressbar/v3 v3.3.4 // indirect
+	github.com/sirupsen/logrus v1.9.0 // indirect
+	github.com/spacemonkeygo/spacelog v0.0.0-20180420211403-2296661a0572 // indirect
+	github.com/spaolacci/murmur3 v1.1.0 // indirect
+	github.com/supranational/blst v0.3.8-0.20220526154634-513d2456b344 // indirect
+	github.com/thomaso-mirodin/intmath v0.0.0-20160323211736-5dc6d854e46e // indirect
+	github.com/tidwall/gjson v1.10.2 // indirect
+	github.com/tidwall/match v1.1.1 // indirect
+	github.com/tidwall/pretty v1.2.0 // indirect
+	github.com/tidwall/tinylru v1.1.0 // indirect
+	github.com/tklauser/go-sysconf v0.3.11 // indirect
+	github.com/tklauser/numcpus v0.6.0 // indirect
+	github.com/trailofbits/go-mutexasserts v0.0.0-20200708152505-19999e7d3cef // indirect
+	github.com/uber/jaeger-client-go v2.25.0+incompatible // indirect
+	github.com/urfave/cli/v2 v2.23.7 // indirect
+	github.com/wealdtech/go-bytesutil v1.1.1 // indirect
+	github.com/wealdtech/go-eth2-types/v2 v2.5.2 // indirect
+	github.com/wealdtech/go-eth2-util v1.6.3 // indirect
+	github.com/whyrusleeping/timecache v0.0.0-20160911033111-cfcb2f1abfee // indirect
+	github.com/xrash/smetrics v0.0.0-20201216005158-039620a65673 // indirect
 	github.com/yusufpapurcu/wmi v1.2.2 // indirect
 	go.etcd.io/bbolt v1.3.7 // indirect
-	golang.org/x/mod v0.6.0-dev.0.20220419223038-86c51ed26bb4 // indirect
-	golang.org/x/net v0.5.0 // indirect
-	golang.org/x/term v0.4.0 // indirect
-	google.golang.org/genproto v0.0.0-20200825200019-8632dd797987 // indirect
-	google.golang.org/grpc v1.31.0 // indirect
-	google.golang.org/protobuf v1.28.1 // indirect
+	go.opencensus.io v0.24.0 // indirect
+	go.uber.org/atomic v1.10.0 // indirect
+	go.uber.org/dig v1.15.0 // indirect
+	go.uber.org/fx v1.18.2 // indirect
+	go.uber.org/multierr v1.8.0 // indirect
+	go.uber.org/zap v1.24.0 // indirect
+	golang.org/x/exp v0.0.0-20230206171751-46f607a40771 // indirect
+	golang.org/x/mod v0.8.0 // indirect
+	golang.org/x/net v0.7.0 // indirect
+	golang.org/x/oauth2 v0.3.0 // indirect
+	golang.org/x/term v0.6.0 // indirect
+	google.golang.org/api v0.34.0 // indirect
+	google.golang.org/appengine v1.6.7 // indirect
+	google.golang.org/genproto v0.0.0-20230110181048-76db0878b65f // indirect
+	google.golang.org/grpc v1.52.0 // indirect
+	google.golang.org/protobuf v1.28.2-0.20220831092852-f930b1dc76e8 // indirect
+	gopkg.in/cenkalti/backoff.v1 v1.1.0 // indirect
+	gopkg.in/inf.v0 v0.9.1 // indirect
 	gopkg.in/yaml.v2 v2.4.0 // indirect
 	gopkg.in/yaml.v3 v3.0.1 // indirect
+	k8s.io/apimachinery v0.18.3 // indirect
+	k8s.io/client-go v0.18.3 // indirect
+	k8s.io/klog v1.0.0 // indirect
+	k8s.io/klog/v2 v2.80.0 // indirect
+	k8s.io/utils v0.0.0-20200520001619-278ece378a50 // indirect
+	lukechampine.com/blake3 v1.1.7 // indirect
+	sigs.k8s.io/structured-merge-diff/v3 v3.0.0 // indirect
+	sigs.k8s.io/yaml v1.2.0 // indirect
 )
 
-replace github.com/tendermint/tendermint => github.com/bnb-chain/tendermint v0.31.15
+replace (
+	github.com/btcsuite/btcd => github.com/btcsuite/btcd v0.23.0
+	github.com/cometbft/cometbft => github.com/bnb-chain/greenfield-tendermint v0.0.0-20230417032003-4cda1f296fb2
+	github.com/grpc-ecosystem/grpc-gateway/v2 => github.com/prysmaticlabs/grpc-gateway/v2 v2.3.1-0.20210702154020-550e1cd83ec1
+	github.com/tendermint/tendermint => github.com/bnb-chain/tendermint v0.31.15
+)
diff --git a/go.sum b/go.sum
index 5ce59554c8..a0e0bf66e5 100644
--- a/go.sum
+++ b/go.sum
@@ -1,5 +1,8 @@
+cloud.google.com/go v0.16.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
 cloud.google.com/go v0.26.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
+cloud.google.com/go v0.31.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
 cloud.google.com/go v0.34.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
+cloud.google.com/go v0.37.0/go.mod h1:TS1dMSSfndXH133OKGwekG838Om/cQT0BUHV3HcBgoo=
 cloud.google.com/go v0.38.0/go.mod h1:990N+gfupTy94rShfmMCWGDn0LpTmnzTp2qbd1dvSRU=
 cloud.google.com/go v0.43.0/go.mod h1:BOSR3VbTLkk6FDC/TcffxP4NF/FFBGA5ku+jvKOP7pg=
 cloud.google.com/go v0.44.1/go.mod h1:iSa0KzasP4Uvy3f1mN/7PiObzGgflwredwwASm/v6AU=
@@ -24,6 +27,7 @@ cloud.google.com/go/bigquery v1.8.0/go.mod h1:J5hqkt3O0uAFnINi6JXValWIb1v0goeZM7
 cloud.google.com/go/bigtable v1.2.0/go.mod h1:JcVAOl45lrTmQfLj7T6TxyMzIN/3FGGcFm+2xVAli2o=
 cloud.google.com/go/datastore v1.0.0/go.mod h1:LXYbyblFSglQ5pkeyhO+Qmw7ukd3C+pD7TKLgZqpHYE=
 cloud.google.com/go/datastore v1.1.0/go.mod h1:umbIZjpQpHh4hmRpGhH4tLFup+FVzqBi1b3c64qFpCk=
+cloud.google.com/go/firestore v1.1.0/go.mod h1:ulACoGHTpvq5r8rxGJ4ddJZBZqakUQqClKRT5SZwBmk=
 cloud.google.com/go/pubsub v1.0.1/go.mod h1:R0Gpsv3s54REJCy4fxDixWD93lHJMoZTyQ2kNxGRt3I=
 cloud.google.com/go/pubsub v1.1.0/go.mod h1:EwwdRX2sKPjnvnqCa270oGRyludottCI76h+R3AArQw=
 cloud.google.com/go/pubsub v1.2.0/go.mod h1:jhfEVHT8odbXTkndysNHCcx0awwzvfOlguIAii9o8iA=
@@ -34,7 +38,16 @@ cloud.google.com/go/storage v1.6.0/go.mod h1:N7U0C8pVQ/+NIKOBQyamJIeKQKkZ+mxpohl
 cloud.google.com/go/storage v1.8.0/go.mod h1:Wv1Oy7z6Yz3DshWRJFhqM/UCfaWIRTdp0RXyy7KQOVs=
 cloud.google.com/go/storage v1.10.0/go.mod h1:FLPqc6j+Ki4BU591ie1oL6qBQGu2Bl/tZ9ullr3+Kg0=
 collectd.org v0.3.0/go.mod h1:A/8DzQBkF6abtvrT2j/AU/4tiBgJWYyh0y/oB/4MlWE=
+contrib.go.opencensus.io/exporter/jaeger v0.2.1 h1:yGBYzYMewVL0yO9qqJv3Z5+IRhPdU7e9o/2oKpX4YvI=
+contrib.go.opencensus.io/exporter/jaeger v0.2.1/go.mod h1:Y8IsLgdxqh1QxYxPC5IgXVmBaeLUeQFfBeBi9PbeZd0=
+dmitri.shuralyov.com/app/changes v0.0.0-20180602232624-0a106ad413e3/go.mod h1:Yl+fi1br7+Rr3LqpNJf1/uxUdtRUV+Tnj0o93V2B9MU=
 dmitri.shuralyov.com/gpu/mtl v0.0.0-20190408044501-666a987793e9/go.mod h1:H6x//7gZCb22OMCxBHrMx7a5I7Hp++hsVxbQ4BYO7hU=
+dmitri.shuralyov.com/html/belt v0.0.0-20180602232347-f7d459c86be0/go.mod h1:JLBrvjyP0v+ecvNYvCpyZgu5/xkfAUhi6wJj28eUfSU=
+dmitri.shuralyov.com/service/change v0.0.0-20181023043359-a85b471d5412/go.mod h1:a1inKt/atXimZ4Mv927x+r7UpyzRUf4emIoiiSC2TN4=
+dmitri.shuralyov.com/state v0.0.0-20180228185332-28bcc343414c/go.mod h1:0PRwlb0D6DFvNNtx+9ybjezNCa8XF0xaYcETyp6rHWU=
+git.apache.org/thrift.git v0.0.0-20180902110319-2566ecd5d999/go.mod h1:fPE2ZNJGynbRyZ4dJvy6G277gSllfV2HJqblrnkyeyg=
+github.com/AndreasBriese/bbloom v0.0.0-20190306092124-e2d15f34fcf9/go.mod h1:bOvUY6CB00SOBii9/FifXqc0awNKxLFCL/+pkDPuyl8=
+github.com/AndreasBriese/bbloom v0.0.0-20190825152654-46b345b51c96/go.mod h1:bOvUY6CB00SOBii9/FifXqc0awNKxLFCL/+pkDPuyl8=
 github.com/Azure/azure-pipeline-go v0.2.1/go.mod h1:UGSo8XybXnIGZ3epmeBw7Jdz+HiUVpqIlpz/HKHylF4=
 github.com/Azure/azure-pipeline-go v0.2.2 h1:6oiIS9yaG6XCCzhgAgKFfIWyo4LLCiDhZot6ltoThhY=
 github.com/Azure/azure-pipeline-go v0.2.2/go.mod h1:4rQ/NZncSvGqNkkOsNpOU1tgoNuIlp9AfUH5G1tvCHc=
@@ -56,31 +69,69 @@ github.com/Azure/go-autorest/logger v0.1.0/go.mod h1:oExouG+K6PryycPJfVSxi/koC6L
 github.com/Azure/go-autorest/tracing v0.5.0 h1:TRn4WjSnkcSy5AEG3pnbtFSwNtwzjr4VYyQflFE619k=
 github.com/Azure/go-autorest/tracing v0.5.0/go.mod h1:r/s2XiOKccPW3HrqB+W0TQzfbtp2fGCgRFtBroKn4Dk=
 github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU=
+github.com/BurntSushi/toml v1.2.1 h1:9F2/+DoOYIOksmaJFPw1tGFy1eDnIJXg+UHjuD8lTak=
+github.com/BurntSushi/toml v1.2.1/go.mod h1:CxXYINrC8qIiEnFrOxCa7Jy5BFHlXnUU2pbicEuybxQ=
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@@ -228,6 +463,9 @@ github.com/golang/mock v1.4.0/go.mod h1:UOMv5ysSaYNkG+OFQykRIcU/QvvxJf3p21QfJ2Bt
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@@ -245,14 +483,18 @@ github.com/golang/protobuf v1.4.3/go.mod h1:oDoupMAO8OvCJWAcko0GGGIgR6R6ocIYbsSw
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@@ -260,14 +502,26 @@ github.com/google/go-cmp v0.4.0/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/
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@@ -612,6 +1653,9 @@ golang.org/x/net v0.0.0-20190613194153-d28f0bde5980/go.mod h1:z5CRVTTTmAJ677TzLL
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@@ -619,6 +1663,7 @@ golang.org/x/net v0.0.0-20200222125558-5a598a2470a0/go.mod h1:z5CRVTTTmAJ677TzLL
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@@ -628,22 +1673,41 @@ golang.org/x/net v0.0.0-20200625001655-4c5254603344/go.mod h1:/O7V0waA8r7cgGh81R
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@@ -839,33 +1991,59 @@ google.golang.org/genproto v0.0.0-20200115191322-ca5a22157cba/go.mod h1:n3cpQtvx
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@@ -876,24 +2054,49 @@ google.golang.org/protobuf v1.23.0/go.mod h1:EGpADcykh3NcUnDUJcl1+ZksZNG86OlYog2
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@@ -905,8 +2108,14 @@ gopkg.in/yaml.v2 v2.3.0/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
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@@ -915,7 +2124,37 @@ honnef.co/go/tools v0.0.1-2019.2.3/go.mod h1:a3bituU0lyd329TUQxRnasdCoJDkEUEAqEt
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+sourcegraph.com/sqs/pbtypes v0.0.0-20180604144634-d3ebe8f20ae4/go.mod h1:ketZ/q3QxT9HOBeFhu6RdvsftgpsbFHBF5Cas6cDKZ0=
diff --git a/internal/ethapi/api.go b/internal/ethapi/api.go
index 90744d4819..18f6746dca 100644
--- a/internal/ethapi/api.go
+++ b/internal/ethapi/api.go
@@ -2285,6 +2285,24 @@ func (s *PublicTransactionPoolAPI) SendRawTransaction(ctx context.Context, input
 	return SubmitTransaction(ctx, s.b, tx)
 }
 
+// SendRawTransactionConditional will add the signed transaction to the transaction pool.
+// The sender/bundler is responsible for signing the transaction
+func (s *PublicTransactionPoolAPI) SendRawTransactionConditional(ctx context.Context, input hexutil.Bytes, opts TransactionOpts) (common.Hash, error) {
+	tx := new(types.Transaction)
+	if err := tx.UnmarshalBinary(input); err != nil {
+		return common.Hash{}, err
+	}
+	header := s.b.CurrentHeader()
+	state, _, err := s.b.StateAndHeaderByNumber(ctx, rpc.BlockNumber(header.Number.Int64()))
+	if state == nil || err != nil {
+		return common.Hash{}, err
+	}
+	if err := opts.Check(header.Number.Uint64(), header.Time, state); err != nil {
+		return common.Hash{}, err
+	}
+	return SubmitTransaction(ctx, s.b, tx)
+}
+
 // Sign calculates an ECDSA signature for:
 // keccack256("\x19Ethereum Signed Message:\n" + len(message) + message).
 //
diff --git a/internal/ethapi/backend.go b/internal/ethapi/backend.go
index 9d6bca7f23..3360ff1879 100644
--- a/internal/ethapi/backend.go
+++ b/internal/ethapi/backend.go
@@ -93,6 +93,8 @@ type Backend interface {
 	SubscribeLogsEvent(ch chan<- []*types.Log) event.Subscription
 	SubscribePendingLogsEvent(ch chan<- []*types.Log) event.Subscription
 	SubscribeRemovedLogsEvent(ch chan<- core.RemovedLogsEvent) event.Subscription
+	SubscribeNewVoteEvent(chan<- core.NewVoteEvent) event.Subscription
+	SubscribeFinalizedHeaderEvent(ch chan<- core.FinalizedHeaderEvent) event.Subscription
 
 	ChainConfig() *params.ChainConfig
 	Engine() consensus.Engine
diff --git a/internal/ethapi/gen_tx_opts_json.go b/internal/ethapi/gen_tx_opts_json.go
new file mode 100644
index 0000000000..19832cede1
--- /dev/null
+++ b/internal/ethapi/gen_tx_opts_json.go
@@ -0,0 +1,58 @@
+// Code generated by github.com/fjl/gencodec. DO NOT EDIT.
+
+package ethapi
+
+import (
+	"encoding/json"
+
+	"github.com/ethereum/go-ethereum/common/hexutil"
+)
+
+// MarshalJSON marshals as JSON.
+func (t TransactionOpts) MarshalJSON() ([]byte, error) {
+	type TransactionOpts struct {
+		KnownAccounts  KnownAccounts   `json:"knownAccounts"`
+		BlockNumberMin *hexutil.Uint64 `json:"blockNumberMin,omitempty"`
+		BlockNumberMax *hexutil.Uint64 `json:"blockNumberMax,omitempty"`
+		TimestampMin   *hexutil.Uint64 `json:"timestampMin,omitempty"`
+		TimestampMax   *hexutil.Uint64 `json:"timestampMax,omitempty"`
+	}
+	var enc TransactionOpts
+	enc.KnownAccounts = t.KnownAccounts
+	enc.BlockNumberMin = t.BlockNumberMin
+	enc.BlockNumberMax = t.BlockNumberMax
+	enc.TimestampMin = t.TimestampMin
+	enc.TimestampMax = t.TimestampMax
+	return json.Marshal(&enc)
+}
+
+// UnmarshalJSON unmarshals from JSON.
+func (t *TransactionOpts) UnmarshalJSON(input []byte) error {
+	type TransactionOpts struct {
+		KnownAccounts  *KnownAccounts  `json:"knownAccounts"`
+		BlockNumberMin *hexutil.Uint64 `json:"blockNumberMin,omitempty"`
+		BlockNumberMax *hexutil.Uint64 `json:"blockNumberMax,omitempty"`
+		TimestampMin   *hexutil.Uint64 `json:"timestampMin,omitempty"`
+		TimestampMax   *hexutil.Uint64 `json:"timestampMax,omitempty"`
+	}
+	var dec TransactionOpts
+	if err := json.Unmarshal(input, &dec); err != nil {
+		return err
+	}
+	if dec.KnownAccounts != nil {
+		t.KnownAccounts = *dec.KnownAccounts
+	}
+	if dec.BlockNumberMin != nil {
+		t.BlockNumberMin = dec.BlockNumberMin
+	}
+	if dec.BlockNumberMax != nil {
+		t.BlockNumberMax = dec.BlockNumberMax
+	}
+	if dec.TimestampMin != nil {
+		t.TimestampMin = dec.TimestampMin
+	}
+	if dec.TimestampMax != nil {
+		t.TimestampMax = dec.TimestampMax
+	}
+	return nil
+}
diff --git a/internal/ethapi/transaction_options.go b/internal/ethapi/transaction_options.go
new file mode 100644
index 0000000000..77b1729037
--- /dev/null
+++ b/internal/ethapi/transaction_options.go
@@ -0,0 +1,94 @@
+package ethapi
+
+import (
+	"bytes"
+	"encoding/json"
+	"errors"
+
+	"github.com/ethereum/go-ethereum/common"
+	"github.com/ethereum/go-ethereum/common/hexutil"
+	"github.com/ethereum/go-ethereum/core/state"
+)
+
+type AccountStorage struct {
+	StorageRoot  *common.Hash
+	StorageSlots map[common.Hash]common.Hash
+}
+
+func (a *AccountStorage) UnmarshalJSON(data []byte) error {
+	var hash common.Hash
+	if err := json.Unmarshal(data, &hash); err == nil {
+		a.StorageRoot = &hash
+		return nil
+	}
+	return json.Unmarshal(data, &a.StorageSlots)
+}
+
+func (a AccountStorage) MarshalJSON() ([]byte, error) {
+	if a.StorageRoot != nil {
+		return json.Marshal(*a.StorageRoot)
+	}
+	return json.Marshal(a.StorageSlots)
+}
+
+type KnownAccounts map[common.Address]AccountStorage
+
+// It is known that marshaling is broken
+// https://github.com/golang/go/issues/55890
+
+//go:generate go run github.com/fjl/gencodec -type TransactionOpts -out gen_tx_opts_json.go
+type TransactionOpts struct {
+	KnownAccounts  KnownAccounts   `json:"knownAccounts"`
+	BlockNumberMin *hexutil.Uint64 `json:"blockNumberMin,omitempty"`
+	BlockNumberMax *hexutil.Uint64 `json:"blockNumberMax,omitempty"`
+	TimestampMin   *hexutil.Uint64 `json:"timestampMin,omitempty"`
+	TimestampMax   *hexutil.Uint64 `json:"timestampMax,omitempty"`
+}
+
+const MaxNumberOfEntries = 1000
+
+func (o *TransactionOpts) Check(blockNumber uint64, timeStamp uint64, statedb *state.StateDB) error {
+	if o.BlockNumberMin != nil && blockNumber < uint64(*o.BlockNumberMin) {
+		return errors.New("BlockNumberMin condition not met")
+	}
+	if o.BlockNumberMax != nil && blockNumber > uint64(*o.BlockNumberMax) {
+		return errors.New("BlockNumberMax condition not met")
+	}
+	if o.TimestampMin != nil && timeStamp < uint64(*o.TimestampMin) {
+		return errors.New("TimestampMin condition not met")
+	}
+	if o.TimestampMax != nil && timeStamp > uint64(*o.TimestampMax) {
+		return errors.New("TimestampMax condition not met")
+	}
+	counter := 0
+	for _, account := range o.KnownAccounts {
+		if account.StorageRoot != nil {
+			counter += 1
+		} else if account.StorageSlots != nil {
+			counter += len(account.StorageSlots)
+		}
+	}
+	if counter > MaxNumberOfEntries {
+		return errors.New("knownAccounts too large")
+	}
+	return o.CheckStorage(statedb)
+}
+
+func (o *TransactionOpts) CheckStorage(statedb *state.StateDB) error {
+	for address, accountStorage := range o.KnownAccounts {
+		if accountStorage.StorageRoot != nil {
+			rootHash := statedb.GetRoot(address)
+			if rootHash != *accountStorage.StorageRoot {
+				return errors.New("storage root hash condition not met")
+			}
+		} else if len(accountStorage.StorageSlots) > 0 {
+			for slot, value := range accountStorage.StorageSlots {
+				stored := statedb.GetState(address, slot)
+				if !bytes.Equal(stored.Bytes(), value.Bytes()) {
+					return errors.New("storage slot value condition not met")
+				}
+			}
+		}
+	}
+	return nil
+}
diff --git a/internal/ethapi/transaction_options_test.go b/internal/ethapi/transaction_options_test.go
new file mode 100644
index 0000000000..479f46a145
--- /dev/null
+++ b/internal/ethapi/transaction_options_test.go
@@ -0,0 +1,122 @@
+package ethapi_test
+
+import (
+	"encoding/json"
+	"reflect"
+	"testing"
+
+	"github.com/ethereum/go-ethereum/common"
+	"github.com/ethereum/go-ethereum/common/hexutil"
+	"github.com/ethereum/go-ethereum/internal/ethapi"
+)
+
+func ptr(hash common.Hash) *common.Hash {
+	return &hash
+}
+
+func u64Ptr(v hexutil.Uint64) *hexutil.Uint64 {
+	return &v
+}
+
+func TestTransactionOptsJSONUnMarshalTrip(t *testing.T) {
+	tests := []struct {
+		name     string
+		input    string
+		mustFail bool
+		expected ethapi.TransactionOpts
+	}{
+		{
+			"StateRoot",
+			`{"knownAccounts":{"0x6b3A8798E5Fb9fC5603F3aB5eA2e8136694e55d0":"0x290decd9548b62a8d60345a988386fc84ba6bc95484008f6362f93160ef3e563"}}`,
+			false,
+			ethapi.TransactionOpts{
+				KnownAccounts: map[common.Address]ethapi.AccountStorage{
+					common.HexToAddress("0x6b3A8798E5Fb9fC5603F3aB5eA2e8136694e55d0"): ethapi.AccountStorage{
+						StorageRoot: ptr(common.HexToHash("0x290decd9548b62a8d60345a988386fc84ba6bc95484008f6362f93160ef3e563")),
+					},
+				},
+			},
+		},
+		{
+			"StorageSlots",
+			`{"knownAccounts":{"0x6b3A8798E5Fb9fC5603F3aB5eA2e8136694e55d0":{"0xc65a7bb8d6351c1cf70c95a316cc6a92839c986682d98bc35f958f4883f9d2a8":"0x0000000000000000000000000000000000000000000000000000000000000000"}}}`,
+			false,
+			ethapi.TransactionOpts{
+				KnownAccounts: map[common.Address]ethapi.AccountStorage{
+					common.HexToAddress("0x6b3A8798E5Fb9fC5603F3aB5eA2e8136694e55d0"): ethapi.AccountStorage{
+						StorageRoot: nil,
+						StorageSlots: map[common.Hash]common.Hash{
+							common.HexToHash("0xc65a7bb8d6351c1cf70c95a316cc6a92839c986682d98bc35f958f4883f9d2a8"): common.HexToHash("0x"),
+						},
+					},
+				},
+			},
+		},
+		{
+			"EmptyObject",
+			`{"knownAccounts":{}}`,
+			false,
+			ethapi.TransactionOpts{
+				KnownAccounts: make(map[common.Address]ethapi.AccountStorage),
+			},
+		},
+		{
+			"EmptyStrings",
+			`{"knownAccounts":{"":""}}`,
+			true,
+			ethapi.TransactionOpts{
+				KnownAccounts: nil,
+			},
+		},
+		{
+			"BlockNumberMin",
+			`{"blockNumberMin":"0x1"}`,
+			false,
+			ethapi.TransactionOpts{
+				BlockNumberMin: u64Ptr(1),
+			},
+		},
+		{
+			"BlockNumberMax",
+			`{"blockNumberMin":"0x1", "blockNumberMax":"0x2"}`,
+			false,
+			ethapi.TransactionOpts{
+				BlockNumberMin: u64Ptr(1),
+				BlockNumberMax: u64Ptr(2),
+			},
+		},
+		{
+			"TimestampMin",
+			`{"timestampMin":"0xffff"}`,
+			false,
+			ethapi.TransactionOpts{
+				TimestampMin: u64Ptr(0xffff),
+			},
+		},
+		{
+			"TimestampMax",
+			`{"timestampMax":"0xffffff"}`,
+			false,
+			ethapi.TransactionOpts{
+				TimestampMax: u64Ptr(0xffffff),
+			},
+		},
+	}
+
+	for _, test := range tests {
+		t.Run(test.name, func(t *testing.T) {
+			var opts ethapi.TransactionOpts
+			err := json.Unmarshal([]byte(test.input), &opts)
+			if test.mustFail && err == nil {
+				t.Errorf("Test %s should fail", test.name)
+			}
+			if !test.mustFail && err != nil {
+				t.Errorf("Test %s should pass but got err: %v", test.name, err)
+			}
+
+			if !reflect.DeepEqual(opts, test.expected) {
+				t.Errorf("Test %s got unexpected value, want %#v, got %#v", test.name, test.expected, opts)
+			}
+		})
+	}
+}
diff --git a/internal/jsre/deps/web3.js b/internal/jsre/deps/web3.js
index 5d27887474..02650a68f3 100644
--- a/internal/jsre/deps/web3.js
+++ b/internal/jsre/deps/web3.js
@@ -5438,6 +5438,13 @@ var methods = function () {
         inputFormatter: [null]
     });
 
+    var sendRawTransactionConditional = new Method({
+        name: 'sendRawTransactionConditional',
+        call: 'eth_sendRawTransactionConditional',
+        params: 2,
+        inputFormatter: [null]
+    });
+
     var sendTransaction = new Method({
         name: 'sendTransaction',
         call: 'eth_sendTransaction',
@@ -5523,6 +5530,7 @@ var methods = function () {
         call,
         estimateGas,
         sendRawTransaction,
+        sendRawTransactionConditional,
         signTransaction,
         sendTransaction,
         sign,
diff --git a/les/api_backend.go b/les/api_backend.go
index 0e02a03050..e354b19fe6 100644
--- a/les/api_backend.go
+++ b/les/api_backend.go
@@ -36,6 +36,7 @@ import (
 	"github.com/ethereum/go-ethereum/ethdb"
 	"github.com/ethereum/go-ethereum/event"
 	"github.com/ethereum/go-ethereum/light"
+	"github.com/ethereum/go-ethereum/log"
 	"github.com/ethereum/go-ethereum/params"
 	"github.com/ethereum/go-ethereum/rpc"
 )
@@ -231,6 +232,11 @@ func (b *LesApiBackend) SubscribeNewTxsEvent(ch chan<- core.NewTxsEvent) event.S
 	return b.eth.txPool.SubscribeNewTxsEvent(ch)
 }
 
+func (b *LesApiBackend) SubscribeNewVoteEvent(ch chan<- core.NewVoteEvent) event.Subscription {
+	log.Error("light ethereum does not support SubscribeNewVoteEvent")
+	return nil
+}
+
 func (b *LesApiBackend) SubscribeChainEvent(ch chan<- core.ChainEvent) event.Subscription {
 	return b.eth.blockchain.SubscribeChainEvent(ch)
 }
@@ -239,6 +245,10 @@ func (b *LesApiBackend) SubscribeChainHeadEvent(ch chan<- core.ChainHeadEvent) e
 	return b.eth.blockchain.SubscribeChainHeadEvent(ch)
 }
 
+func (b *LesApiBackend) SubscribeFinalizedHeaderEvent(ch chan<- core.FinalizedHeaderEvent) event.Subscription {
+	return b.eth.blockchain.SubscribeFinalizedHeaderEvent(ch)
+}
+
 func (b *LesApiBackend) SubscribeChainSideEvent(ch chan<- core.ChainSideEvent) event.Subscription {
 	return b.eth.blockchain.SubscribeChainSideEvent(ch)
 }
diff --git a/light/lightchain.go b/light/lightchain.go
index 7ce0b2698d..086b673d30 100644
--- a/light/lightchain.go
+++ b/light/lightchain.go
@@ -50,17 +50,18 @@ var (
 // headers, downloading block bodies and receipts on demand through an ODR
 // interface. It only does header validation during chain insertion.
 type LightChain struct {
-	hc            *core.HeaderChain
-	indexerConfig *IndexerConfig
-	chainDb       ethdb.Database
-	engine        consensus.Engine
-	odr           OdrBackend
-	chainFeed     event.Feed
-	chainSideFeed event.Feed
-	chainHeadFeed event.Feed
-	scope         event.SubscriptionScope
-	genesisBlock  *types.Block
-	forker        *core.ForkChoice
+	hc                  *core.HeaderChain
+	indexerConfig       *IndexerConfig
+	chainDb             ethdb.Database
+	engine              consensus.Engine
+	odr                 OdrBackend
+	chainFeed           event.Feed
+	chainSideFeed       event.Feed
+	chainHeadFeed       event.Feed
+	finalizedHeaderFeed event.Feed
+	scope               event.SubscriptionScope
+	genesisBlock        *types.Block
+	forker              *core.ForkChoice
 
 	bodyCache    *lru.Cache // Cache for the most recent block bodies
 	bodyRLPCache *lru.Cache // Cache for the most recent block bodies in RLP encoded format
@@ -370,6 +371,8 @@ func (lc *LightChain) postChainEvents(events []interface{}) {
 				lc.chainHeadFeed.Send(core.ChainHeadEvent{Block: ev.Block})
 			}
 			lc.chainFeed.Send(ev)
+		case core.FinalizedHeaderEvent:
+			lc.finalizedHeaderFeed.Send(ev)
 		case core.ChainSideEvent:
 			lc.chainSideFeed.Send(ev)
 		}
@@ -456,6 +459,9 @@ func (lc *LightChain) InsertHeaderChain(chain []*types.Header, checkFreq int) (i
 	case core.CanonStatTy:
 		lc.chainFeed.Send(core.ChainEvent{Block: block, Hash: block.Hash()})
 		lc.chainHeadFeed.Send(core.ChainHeadEvent{Block: block})
+		if posa, ok := lc.Engine().(consensus.PoSA); ok {
+			lc.finalizedHeaderFeed.Send(core.FinalizedHeaderEvent{Header: posa.GetFinalizedHeader(lc, block.Header())})
+		}
 	case core.SideStatTy:
 		lc.chainSideFeed.Send(core.ChainSideEvent{Block: block})
 	}
@@ -468,6 +474,19 @@ func (lc *LightChain) CurrentHeader() *types.Header {
 	return lc.hc.CurrentHeader()
 }
 
+// GetJustifiedNumber returns the highest justified blockNumber on the branch including and before `header`
+func (lc *LightChain) GetJustifiedNumber(header *types.Header) uint64 {
+	if p, ok := lc.engine.(consensus.PoSA); ok {
+		justifiedBlockNumber, _, err := p.GetJustifiedNumberAndHash(lc.hc, header)
+		if err == nil {
+			return justifiedBlockNumber
+		}
+	}
+	// return 0 when err!=nil
+	// so the input `header` will at a disadvantage during reorg
+	return 0
+}
+
 // GetTd retrieves a block's total difficulty in the canonical chain from the
 // database by hash and number, caching it if found.
 func (lc *LightChain) GetTd(hash common.Hash, number uint64) *big.Int {
@@ -588,6 +607,11 @@ func (lc *LightChain) SubscribeChainHeadEvent(ch chan<- core.ChainHeadEvent) eve
 	return lc.scope.Track(lc.chainHeadFeed.Subscribe(ch))
 }
 
+// SubscribeFinalizedHeaderEvent registers a subscription of FinalizedHeaderEvent.
+func (lc *LightChain) SubscribeFinalizedHeaderEvent(ch chan<- core.FinalizedHeaderEvent) event.Subscription {
+	return lc.scope.Track(lc.finalizedHeaderFeed.Subscribe(ch))
+}
+
 // SubscribeChainSideEvent registers a subscription of ChainSideEvent.
 func (lc *LightChain) SubscribeChainSideEvent(ch chan<- core.ChainSideEvent) event.Subscription {
 	return lc.scope.Track(lc.chainSideFeed.Subscribe(ch))
diff --git a/log/format.go b/log/format.go
index 613dc33be7..6c1d5942b3 100644
--- a/log/format.go
+++ b/log/format.go
@@ -14,9 +14,12 @@ import (
 	"unicode/utf8"
 )
 
+var (
+	timeFormat     = "2006-01-02T15:04:05-0700"
+	termTimeFormat = "01-02|15:04:05.000"
+)
+
 const (
-	timeFormat        = "2006-01-02T15:04:05-0700"
-	termTimeFormat    = "01-02|15:04:05.000"
 	floatFormat       = 'f'
 	termMsgJust       = 40
 	termCtxMaxPadding = 40
@@ -482,3 +485,11 @@ func escapeString(s string) string {
 	}
 	return strconv.Quote(s)
 }
+
+func SetTermTimeFormat(format string) {
+	termTimeFormat = format
+}
+
+func SetTimeFormat(format string) {
+	timeFormat = format
+}
diff --git a/miner/miner.go b/miner/miner.go
index 7f0f1583e8..de575ee69c 100644
--- a/miner/miner.go
+++ b/miner/miner.go
@@ -54,6 +54,7 @@ type Config struct {
 	GasPrice      *big.Int       // Minimum gas price for mining a transaction
 	Recommit      time.Duration  // The time interval for miner to re-create mining work.
 	Noverify      bool           // Disable remote mining solution verification(only useful in ethash).
+	VoteEnable    bool           // whether enable voting
 }
 
 // Miner creates blocks and searches for proof-of-work values.
diff --git a/miner/worker.go b/miner/worker.go
index 37f458693e..9f4cce2988 100644
--- a/miner/worker.go
+++ b/miner/worker.go
@@ -666,20 +666,23 @@ func (w *worker) resultLoop() {
 				w.recentMinedBlocks.Add(block.NumberU64(), []common.Hash{block.ParentHash()})
 			}
 
-			// Broadcast the block and announce chain insertion event
-			w.mux.Post(core.NewMinedBlockEvent{Block: block})
-
 			// Commit block and state to database.
 			task.state.SetExpectedStateRoot(block.Root())
 			start := time.Now()
-			_, err := w.chain.WriteBlockAndSetHead(block, receipts, logs, task.state, true)
-			if err != nil {
-				log.Error("Failed writing block to chain", "err", err)
+			status, err := w.chain.WriteBlockAndSetHead(block, receipts, logs, task.state, true)
+			if status != core.CanonStatTy {
+				if err != nil {
+					log.Error("Failed writing block to chain", "err", err, "status", status)
+				} else {
+					log.Info("Written block as SideChain and avoid broadcasting", "status", status)
+				}
 				continue
 			}
 			writeBlockTimer.UpdateSince(start)
 			log.Info("Successfully sealed new block", "number", block.Number(), "sealhash", sealhash, "hash", hash,
 				"elapsed", common.PrettyDuration(time.Since(task.createdAt)))
+			// Broadcast the block and announce chain insertion event
+			w.mux.Post(core.NewMinedBlockEvent{Block: block})
 
 			// Insert the block into the set of pending ones to resultLoop for confirmations
 			w.unconfirmed.Insert(block.NumberU64(), block.Hash())
diff --git a/mobile/ethclient.go b/mobile/ethclient.go
index 662125c4ad..59e39e53ec 100644
--- a/mobile/ethclient.go
+++ b/mobile/ethclient.go
@@ -148,6 +148,74 @@ func (ec *EthereumClient) SubscribeNewHead(ctx *Context, handler NewHeadHandler,
 	return &Subscription{rawSub}, nil
 }
 
+// NewFinalizedHeaderHandler is a client-side subscription callback to invoke on events and
+// subscription failure.
+type NewFinalizedHeaderHandler interface {
+	OnNewFinalizedHeader(header *Header)
+	OnError(failure string)
+}
+
+// SubscribeNewFinalizedHeader subscribes to notifications about the current blockchain finalized header
+// on the given channel.
+func (ec *EthereumClient) SubscribeNewFinalizedHeader(ctx *Context, handler NewFinalizedHeaderHandler, buffer int) (sub *Subscription, _ error) {
+	// Subscribe to the event internally
+	ch := make(chan *types.Header, buffer)
+	rawSub, err := ec.client.SubscribeNewFinalizedHeader(ctx.context, ch)
+	if err != nil {
+		return nil, err
+	}
+	// Start up a dispatcher to feed into the callback
+	go func() {
+		for {
+			select {
+			case header := <-ch:
+				handler.OnNewFinalizedHeader(&Header{header})
+
+			case err := <-rawSub.Err():
+				if err != nil {
+					handler.OnError(err.Error())
+				}
+				return
+			}
+		}
+	}()
+	return &Subscription{rawSub}, nil
+}
+
+// NewVoteHandler is a client-side subscription callback to invoke on events and
+// subscription failure.
+type NewVoteHandler interface {
+	OnNewVote(vote *types.VoteEnvelope)
+	OnError(failure string)
+}
+
+// SubscribeNewVotes subscribes to notifications about the new votes into the vote pool
+// on the given channel.
+func (ec *EthereumClient) SubscribeNewVotes(ctx *Context, handler NewVoteHandler, buffer int) (sub *Subscription, _ error) {
+	// Subscribe to the event internally
+	ch := make(chan *types.VoteEnvelope, buffer)
+	rawSub, err := ec.client.SubscribeNewVotes(ctx.context, ch)
+	if err != nil {
+		return nil, err
+	}
+	// Start up a dispatcher to feed into the callback
+	go func() {
+		for {
+			select {
+			case vote := <-ch:
+				handler.OnNewVote(vote)
+
+			case err := <-rawSub.Err():
+				if err != nil {
+					handler.OnError(err.Error())
+				}
+				return
+			}
+		}
+	}()
+	return &Subscription{rawSub}, nil
+}
+
 // State Access
 
 // GetBalanceAt returns the wei balance of the given account.
diff --git a/node/config.go b/node/config.go
index 2e37c23532..cd87e26362 100644
--- a/node/config.go
+++ b/node/config.go
@@ -204,6 +204,17 @@ type Config struct {
 
 	// EnableDoubleSignMonitor is a flag that whether to enable the double signature checker
 	EnableDoubleSignMonitor bool `toml:",omitempty"`
+
+	// BLSPasswordFile is the file that contains BLS wallet password.
+	BLSPasswordFile string `toml:",omitempty"`
+
+	// BLSWalletDir is the file system folder of BLS wallet. The directory can
+	// be specified as a relative path, in which case it is resolved relative to the
+	// current directory.
+	BLSWalletDir string `toml:",omitempty"`
+
+	// VoteJournalDir is the directory to store votes in the fast finality feature.
+	VoteJournalDir string `toml:",omitempty"`
 }
 
 // IPCEndpoint resolves an IPC endpoint based on a configured value, taking into
@@ -502,8 +513,13 @@ func (c *Config) warnOnce(w *bool, format string, args ...interface{}) {
 }
 
 type LogConfig struct {
-	FileRoot     string
-	FilePath     string
-	MaxBytesSize uint
-	Level        string
+	FileRoot     *string `toml:",omitempty"`
+	FilePath     *string `toml:",omitempty"`
+	MaxBytesSize *uint   `toml:",omitempty"`
+	Level        *string `toml:",omitempty"`
+
+	// TermTimeFormat is the time format used for console logging.
+	TermTimeFormat *string `toml:",omitempty"`
+	// TimeFormat is the time format used for file logging.
+	TimeFormat *string `toml:",omitempty"`
 }
diff --git a/node/node.go b/node/node.go
index 48f7b4c4be..ef256f77e7 100644
--- a/node/node.go
+++ b/node/node.go
@@ -86,13 +86,25 @@ func New(conf *Config) (*Node, error) {
 		conf.DataDir = absdatadir
 	}
 	if conf.LogConfig != nil {
-		logFilePath := ""
-		if conf.LogConfig.FileRoot == "" {
-			logFilePath = path.Join(conf.DataDir, conf.LogConfig.FilePath)
-		} else {
-			logFilePath = path.Join(conf.LogConfig.FileRoot, conf.LogConfig.FilePath)
+		if conf.LogConfig.TermTimeFormat != nil && *conf.LogConfig.TermTimeFormat != "" {
+			log.SetTermTimeFormat(*conf.LogConfig.TermTimeFormat)
+		}
+
+		if conf.LogConfig.TimeFormat != nil && *conf.LogConfig.TimeFormat != "" {
+			log.SetTimeFormat(*conf.LogConfig.TimeFormat)
+		}
+
+		if conf.LogConfig.FileRoot != nil && conf.LogConfig.FilePath != nil &&
+			conf.LogConfig.MaxBytesSize != nil && conf.LogConfig.Level != nil {
+			// log to file
+			logFilePath := ""
+			if *conf.LogConfig.FileRoot == "" {
+				logFilePath = path.Join(conf.DataDir, *conf.LogConfig.FilePath)
+			} else {
+				logFilePath = path.Join(*conf.LogConfig.FileRoot, *conf.LogConfig.FilePath)
+			}
+			log.Root().SetHandler(log.NewFileLvlHandler(logFilePath, *conf.LogConfig.MaxBytesSize, *conf.LogConfig.Level))
 		}
-		log.Root().SetHandler(log.NewFileLvlHandler(logFilePath, conf.LogConfig.MaxBytesSize, conf.LogConfig.Level))
 	}
 	if conf.Logger == nil {
 		conf.Logger = log.New()
diff --git a/p2p/discover/v5_udp.go b/p2p/discover/v5_udp.go
index 1e9909559f..f98b8eadd9 100644
--- a/p2p/discover/v5_udp.go
+++ b/p2p/discover/v5_udp.go
@@ -54,7 +54,7 @@ type codecV5 interface {
 	// Encode encodes a packet.
 	Encode(enode.ID, string, v5wire.Packet, *v5wire.Whoareyou) ([]byte, v5wire.Nonce, error)
 
-	// decode decodes a packet. It returns a *v5wire.Unknown packet if decryption fails.
+	// Decode decodes a packet. It returns a *v5wire.Unknown packet if decryption fails.
 	// The *enode.Node return value is non-nil when the input contains a handshake response.
 	Decode([]byte, string) (enode.ID, *enode.Node, v5wire.Packet, error)
 }
diff --git a/p2p/transport.go b/p2p/transport.go
index de9e685ed4..f71fce070c 100644
--- a/p2p/transport.go
+++ b/p2p/transport.go
@@ -136,7 +136,7 @@ func (t *rlpxTransport) doProtoHandshake(our *protoHandshake) (their *protoHands
 	// Writing our handshake happens concurrently, we prefer
 	// returning the handshake read error. If the remote side
 	// disconnects us early with a valid reason, we should return it
-	// as the error so it can be tracked elsewhere.
+	// as the error, so it can be tracked elsewhere.
 	werr := make(chan error, 1)
 	gopool.Submit(func() { werr <- Send(t, handshakeMsg, our) })
 	if their, err = readProtocolHandshake(t); err != nil {
diff --git a/params/config.go b/params/config.go
index f4c485f227..da7f40128c 100644
--- a/params/config.go
+++ b/params/config.go
@@ -74,6 +74,80 @@ var (
 		Ethash:              new(EthashConfig),
 	}
 
+	// just for prysm compile pass
+	// RopstenChainConfig contains the chain parameters to run a node on the Ropsten test network.
+	RopstenChainConfig = &ChainConfig{
+		ChainID:                 big.NewInt(3),
+		HomesteadBlock:          big.NewInt(0),
+		DAOForkBlock:            nil,
+		DAOForkSupport:          true,
+		EIP150Block:             big.NewInt(0),
+		EIP150Hash:              common.HexToHash("0x41941023680923e0fe4d74a34bdac8141f2540e3ae90623718e47d66d1ca4a2d"),
+		EIP155Block:             big.NewInt(10),
+		EIP158Block:             big.NewInt(10),
+		ByzantiumBlock:          big.NewInt(1_700_000),
+		ConstantinopleBlock:     big.NewInt(4_230_000),
+		PetersburgBlock:         big.NewInt(4_939_394),
+		IstanbulBlock:           big.NewInt(6_485_846),
+		MuirGlacierBlock:        big.NewInt(7_117_117),
+		BerlinBlock:             big.NewInt(9_812_189),
+		LondonBlock:             big.NewInt(10_499_401),
+		TerminalTotalDifficulty: new(big.Int).SetUint64(50_000_000_000_000_000),
+		Ethash:                  new(EthashConfig),
+	}
+
+	// just for prysm compile pass
+	// SepoliaChainConfig contains the chain parameters to run a node on the Sepolia test network.
+	SepoliaChainConfig = &ChainConfig{
+		ChainID:             big.NewInt(11155111),
+		HomesteadBlock:      big.NewInt(0),
+		DAOForkBlock:        nil,
+		DAOForkSupport:      true,
+		EIP150Block:         big.NewInt(0),
+		EIP155Block:         big.NewInt(0),
+		EIP158Block:         big.NewInt(0),
+		ByzantiumBlock:      big.NewInt(0),
+		ConstantinopleBlock: big.NewInt(0),
+		PetersburgBlock:     big.NewInt(0),
+		IstanbulBlock:       big.NewInt(0),
+		MuirGlacierBlock:    big.NewInt(0),
+		BerlinBlock:         big.NewInt(0),
+		MirrorSyncBlock:     big.NewInt(0),
+		BrunoBlock:          big.NewInt(0),
+		EulerBlock:          big.NewInt(0),
+		LondonBlock:         big.NewInt(0),
+		Ethash:              new(EthashConfig),
+	}
+
+	// just for prysm compile pass
+	// GoerliChainConfig contains the chain parameters to run a node on the Görli test network.
+	GoerliChainConfig = &ChainConfig{
+		ChainID:             big.NewInt(5),
+		HomesteadBlock:      big.NewInt(0),
+		DAOForkBlock:        nil,
+		DAOForkSupport:      true,
+		EIP150Block:         big.NewInt(0),
+		EIP155Block:         big.NewInt(0),
+		EIP158Block:         big.NewInt(0),
+		ByzantiumBlock:      big.NewInt(0),
+		ConstantinopleBlock: big.NewInt(0),
+		PetersburgBlock:     big.NewInt(0),
+		RamanujanBlock:      big.NewInt(0),
+		NielsBlock:          big.NewInt(0),
+		MirrorSyncBlock:     big.NewInt(0),
+		BrunoBlock:          big.NewInt(0),
+		EulerBlock:          big.NewInt(0),
+		IstanbulBlock:       big.NewInt(1_561_651),
+		MuirGlacierBlock:    nil,
+		BerlinBlock:         big.NewInt(4_460_644),
+		LondonBlock:         big.NewInt(5_062_605),
+		ArrowGlacierBlock:   nil,
+		Clique: &CliqueConfig{
+			Period: 15,
+			Epoch:  30000,
+		},
+	}
+
 	// MainnetTrustedCheckpoint contains the light client trusted checkpoint for the main network.
 	MainnetTrustedCheckpoint = &TrustedCheckpoint{
 		SectionIndex: 413,
@@ -116,6 +190,11 @@ var (
 		GibbsBlock:          big.NewInt(23846001),
 		PlanckBlock:         big.NewInt(27281024),
 
+		// TODO modify blockNumber, make sure the blockNumber is not an integer multiple of 200 (epoch number)
+		// TODO Caution !!! it should be very careful !!!
+		LubanBlock: nil,
+		PlatoBlock: nil,
+
 		Parlia: &ParliaConfig{
 			Period: 3,
 			Epoch:  200,
@@ -142,6 +221,12 @@ var (
 		NanoBlock:           big.NewInt(23482428),
 		MoranBlock:          big.NewInt(23603940),
 		PlanckBlock:         big.NewInt(28196022),
+
+		// TODO modify blockNumber, make sure the blockNumber is not an integer multiple of 200 (epoch number)
+		// TODO Caution !!! it should be very careful !!!
+		LubanBlock: big.NewInt(29295050),
+		PlatoBlock: nil,
+
 		Parlia: &ParliaConfig{
 			Period: 3,
 			Epoch:  200,
@@ -169,6 +254,10 @@ var (
 		MoranBlock:          nil,
 		PlanckBlock:         nil,
 
+		// TODO
+		LubanBlock: nil,
+		PlatoBlock: nil,
+
 		Parlia: &ParliaConfig{
 			Period: 3,
 			Epoch:  200,
@@ -180,16 +269,17 @@ var (
 	//
 	// This configuration is intentionally not using keyed fields to force anyone
 	// adding flags to the config to also have to set these fields.
-	AllEthashProtocolChanges = &ChainConfig{big.NewInt(1337), big.NewInt(0), nil, false, big.NewInt(0), common.Hash{}, big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), nil, nil, big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), new(EthashConfig), nil, nil}
+
+	AllEthashProtocolChanges = &ChainConfig{big.NewInt(1337), big.NewInt(0), nil, false, big.NewInt(0), common.Hash{}, big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), nil, nil, big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), new(EthashConfig), nil, nil}
 
 	// AllCliqueProtocolChanges contains every protocol change (EIPs) introduced
 	// and accepted by the Ethereum core developers into the Clique consensus.
 	//
 	// This configuration is intentionally not using keyed fields to force anyone
 	// adding flags to the config to also have to set these fields.
-	AllCliqueProtocolChanges = &ChainConfig{big.NewInt(1337), big.NewInt(0), nil, false, big.NewInt(0), common.Hash{}, big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), nil, nil, big.NewInt(0), nil, nil, nil, big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), nil, nil, nil, nil, &CliqueConfig{Period: 0, Epoch: 30000}, nil}
+	AllCliqueProtocolChanges = &ChainConfig{big.NewInt(1337), big.NewInt(0), nil, false, big.NewInt(0), common.Hash{}, big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), nil, nil, big.NewInt(0), nil, nil, nil, big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), nil, nil, nil, big.NewInt(0), big.NewInt(0), nil, &CliqueConfig{Period: 0, Epoch: 30000}, nil}
 
-	TestChainConfig = &ChainConfig{big.NewInt(1), big.NewInt(0), nil, false, big.NewInt(0), common.Hash{}, big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), nil, nil, big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), nil, nil, new(EthashConfig), nil, nil}
+	TestChainConfig = &ChainConfig{big.NewInt(1), big.NewInt(0), nil, false, big.NewInt(0), common.Hash{}, big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), nil, nil, big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), nil, nil, big.NewInt(0), big.NewInt(0), new(EthashConfig), nil, nil}
 	TestRules       = TestChainConfig.Rules(new(big.Int), false)
 )
 
@@ -286,6 +376,8 @@ type ChainConfig struct {
 	NanoBlock       *big.Int `json:"nanoBlock,omitempty" toml:",omitempty"`       // nanoBlock switch block (nil = no fork, 0 = already activated)
 	MoranBlock      *big.Int `json:"moranBlock,omitempty" toml:",omitempty"`      // moranBlock switch block (nil = no fork, 0 = already activated)
 	PlanckBlock     *big.Int `json:"planckBlock,omitempty" toml:",omitempty"`     // planckBlock switch block (nil = no fork, 0 = already activated)
+	LubanBlock      *big.Int `json:"lubanBlock,omitempty" toml:",omitempty"`      // lubanBlock switch block (nil = no fork, 0 = already activated)
+	PlatoBlock      *big.Int `json:"platoBlock,omitempty" toml:",omitempty"`      // platoBlock switch block (nil = no fork, 0 = already activated)
 
 	// Various consensus engines
 	Ethash *EthashConfig `json:"ethash,omitempty" toml:",omitempty"`
@@ -336,7 +428,8 @@ func (c *ChainConfig) String() string {
 	default:
 		engine = "unknown"
 	}
-	return fmt.Sprintf("{ChainID: %v Homestead: %v DAO: %v DAOSupport: %v EIP150: %v EIP155: %v EIP158: %v Byzantium: %v Constantinople: %v Petersburg: %v Istanbul: %v, Muir Glacier: %v, Ramanujan: %v, Niels: %v, MirrorSync: %v, Bruno: %v, Berlin: %v, YOLO v3: %v, CatalystBlock: %v, London: %v, ArrowGlacier: %v, MergeFork:%v, Euler: %v, Gibbs: %v, Nano: %v, Moran: %v, Planck: %v, Engine: %v}",
+
+	return fmt.Sprintf("{ChainID: %v Homestead: %v DAO: %v DAOSupport: %v EIP150: %v EIP155: %v EIP158: %v Byzantium: %v Constantinople: %v Petersburg: %v Istanbul: %v, Muir Glacier: %v, Ramanujan: %v, Niels: %v, MirrorSync: %v, Bruno: %v, Berlin: %v, YOLO v3: %v, CatalystBlock: %v, London: %v, ArrowGlacier: %v, MergeFork:%v, Euler: %v, Gibbs: %v, Nano: %v, Moran: %v, Planck: %v,Luban: %v, Plato: %v, Engine: %v}",
 		c.ChainID,
 		c.HomesteadBlock,
 		c.DAOForkBlock,
@@ -364,6 +457,8 @@ func (c *ChainConfig) String() string {
 		c.NanoBlock,
 		c.MoranBlock,
 		c.PlanckBlock,
+		c.LubanBlock,
+		c.PlatoBlock,
 		engine,
 	)
 }
@@ -453,6 +548,26 @@ func (c *ChainConfig) IsOnEuler(num *big.Int) bool {
 	return configNumEqual(c.EulerBlock, num)
 }
 
+// IsLuban returns whether num is either equal to the first fast finality fork block or greater.
+func (c *ChainConfig) IsLuban(num *big.Int) bool {
+	return isForked(c.LubanBlock, num)
+}
+
+// IsOnLuban returns whether num is equal to the first fast finality fork block.
+func (c *ChainConfig) IsOnLuban(num *big.Int) bool {
+	return configNumEqual(c.LubanBlock, num)
+}
+
+// IsPlato returns whether num is either equal to the second fast finality fork block or greater.
+func (c *ChainConfig) IsPlato(num *big.Int) bool {
+	return isForked(c.PlatoBlock, num)
+}
+
+// IsOnPlato returns whether num is equal to the second fast finality fork block.
+func (c *ChainConfig) IsOnPlato(num *big.Int) bool {
+	return configNumEqual(c.PlatoBlock, num)
+}
+
 // IsMuirGlacier returns whether num is either equal to the Muir Glacier (EIP-2384) fork block or greater.
 func (c *ChainConfig) IsMuirGlacier(num *big.Int) bool {
 	return isForked(c.MuirGlacierBlock, num)
@@ -559,6 +674,8 @@ func (c *ChainConfig) CheckConfigForkOrder() error {
 		{name: "brunoBlock", block: c.BrunoBlock},
 		{name: "eulerBlock", block: c.EulerBlock},
 		{name: "gibbsBlock", block: c.GibbsBlock},
+		{name: "lubanBlock", block: c.LubanBlock},
+		{name: "platoBlock", block: c.PlatoBlock},
 	} {
 		if lastFork.name != "" {
 			// Next one must be higher number
@@ -658,6 +775,12 @@ func (c *ChainConfig) checkCompatible(newcfg *ChainConfig, head *big.Int) *Confi
 	if isForkIncompatible(c.PlanckBlock, newcfg.PlanckBlock, head) {
 		return newCompatError("planck fork block", c.PlanckBlock, newcfg.PlanckBlock)
 	}
+	if isForkIncompatible(c.LubanBlock, newcfg.LubanBlock, head) {
+		return newCompatError("luban fork block", c.LubanBlock, newcfg.LubanBlock)
+	}
+	if isForkIncompatible(c.PlatoBlock, newcfg.PlatoBlock, head) {
+		return newCompatError("plato fork block", c.PlatoBlock, newcfg.PlatoBlock)
+	}
 	return nil
 }
 
@@ -730,6 +853,7 @@ type Rules struct {
 	IsNano                                                  bool
 	IsMoran                                                 bool
 	IsPlanck                                                bool
+	IsLuban                                                 bool
 }
 
 // Rules ensures c's ChainID is not nil.
@@ -754,5 +878,6 @@ func (c *ChainConfig) Rules(num *big.Int, isMerge bool) Rules {
 		IsNano:           c.IsNano(num),
 		IsMoran:          c.IsMoran(num),
 		IsPlanck:         c.IsPlanck(num),
+		IsLuban:          c.IsLuban(num),
 	}
 }
diff --git a/params/protocol_params.go b/params/protocol_params.go
index e244c24231..527c6dc166 100644
--- a/params/protocol_params.go
+++ b/params/protocol_params.go
@@ -129,16 +129,19 @@ const (
 
 	// Precompiled contract gas prices
 
-	TendermintHeaderValidateGas uint64 = 3000 // Gas for validate tendermiint consensus state
-	IAVLMerkleProofValidateGas  uint64 = 3000 // Gas for validate merkle proof
-
-	EcrecoverGas        uint64 = 3000 // Elliptic curve sender recovery gas price
-	Sha256BaseGas       uint64 = 60   // Base price for a SHA256 operation
-	Sha256PerWordGas    uint64 = 12   // Per-word price for a SHA256 operation
-	Ripemd160BaseGas    uint64 = 600  // Base price for a RIPEMD160 operation
-	Ripemd160PerWordGas uint64 = 120  // Per-word price for a RIPEMD160 operation
-	IdentityBaseGas     uint64 = 15   // Base price for a data copy operation
-	IdentityPerWordGas  uint64 = 3    // Per-work price for a data copy operation
+	TendermintHeaderValidateGas   uint64 = 3000 // Gas for validate tendermiint consensus state
+	IAVLMerkleProofValidateGas    uint64 = 3000 // Gas for validate merkle proof
+	CometBFTLightBlockValidateGas uint64 = 3000 // Gas for validate cometBFT light block
+
+	EcrecoverGas                uint64 = 3000 // Elliptic curve sender recovery gas price
+	Sha256BaseGas               uint64 = 60   // Base price for a SHA256 operation
+	Sha256PerWordGas            uint64 = 12   // Per-word price for a SHA256 operation
+	Ripemd160BaseGas            uint64 = 600  // Base price for a RIPEMD160 operation
+	Ripemd160PerWordGas         uint64 = 120  // Per-word price for a RIPEMD160 operation
+	IdentityBaseGas             uint64 = 15   // Base price for a data copy operation
+	IdentityPerWordGas          uint64 = 3    // Per-work price for a data copy operation
+	BlsSignatureVerifyBaseGas   uint64 = 1000 // base price for a BLS signature verify operation
+	BlsSignatureVerifyPerKeyGas uint64 = 3500 // Per-key price for a BLS signature verify operation
 
 	Bn256AddGasByzantium             uint64 = 500    // Byzantium gas needed for an elliptic curve addition
 	Bn256AddGasIstanbul              uint64 = 150    // Gas needed for an elliptic curve addition
diff --git a/params/version.go b/params/version.go
index 5468e71e1d..251d55abba 100644
--- a/params/version.go
+++ b/params/version.go
@@ -22,8 +22,8 @@ import (
 
 const (
 	VersionMajor = 1  // Major version component of the current release
-	VersionMinor = 1  // Minor version component of the current release
-	VersionPatch = 21 // Patch version component of the current release
+	VersionMinor = 2  // Minor version component of the current release
+	VersionPatch = 0  // Patch version component of the current release
 	VersionMeta  = "" // Version metadata to append to the version string
 )
 
diff --git a/rpc/client.go b/rpc/client.go
index a89f8ba18c..c8a1a343bc 100644
--- a/rpc/client.go
+++ b/rpc/client.go
@@ -187,6 +187,18 @@ func DialContext(ctx context.Context, rawurl string) (*Client, error) {
 	}
 }
 
+// DialOptions creates a new RPC client for the given URL. You can supply any of the
+// pre-defined client options to configure the underlying transport.
+//
+// The context is used to cancel or time out the initial connection establishment. It does
+// not affect subsequent interactions with the client.
+//
+// The client reconnects automatically when the connection is lost.
+func DialOptions(ctx context.Context, rawurl string, options ...ClientOption) (*Client, error) {
+	// just for prysm compile pass
+	return nil, fmt.Errorf("not supported")
+}
+
 // Client retrieves the client from the context, if any. This can be used to perform
 // 'reverse calls' in a handler method.
 func ClientFromContext(ctx context.Context) (*Client, bool) {
diff --git a/rpc/client_opt.go b/rpc/client_opt.go
new file mode 100644
index 0000000000..5ad7c22b3c
--- /dev/null
+++ b/rpc/client_opt.go
@@ -0,0 +1,106 @@
+// Copyright 2022 The go-ethereum Authors
+// This file is part of the go-ethereum library.
+//
+// The go-ethereum library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Lesser General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// The go-ethereum library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU Lesser General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public License
+// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
+
+package rpc
+
+import (
+	"net/http"
+
+	"github.com/gorilla/websocket"
+)
+
+// ClientOption is a configuration option for the RPC client.
+type ClientOption interface {
+	applyOption(*clientConfig)
+}
+
+type clientConfig struct {
+	httpClient  *http.Client
+	httpHeaders http.Header
+	httpAuth    HTTPAuth
+
+	wsDialer *websocket.Dialer
+}
+
+func (cfg *clientConfig) initHeaders() {
+	if cfg.httpHeaders == nil {
+		cfg.httpHeaders = make(http.Header)
+	}
+}
+
+func (cfg *clientConfig) setHeader(key, value string) {
+	cfg.initHeaders()
+	cfg.httpHeaders.Set(key, value)
+}
+
+type optionFunc func(*clientConfig)
+
+func (fn optionFunc) applyOption(opt *clientConfig) {
+	fn(opt)
+}
+
+// WithWebsocketDialer configures the websocket.Dialer used by the RPC client.
+func WithWebsocketDialer(dialer websocket.Dialer) ClientOption {
+	return optionFunc(func(cfg *clientConfig) {
+		cfg.wsDialer = &dialer
+	})
+}
+
+// WithHeader configures HTTP headers set by the RPC client. Headers set using this option
+// will be used for both HTTP and WebSocket connections.
+func WithHeader(key, value string) ClientOption {
+	return optionFunc(func(cfg *clientConfig) {
+		cfg.initHeaders()
+		cfg.httpHeaders.Set(key, value)
+	})
+}
+
+// WithHeaders configures HTTP headers set by the RPC client. Headers set using this
+// option will be used for both HTTP and WebSocket connections.
+func WithHeaders(headers http.Header) ClientOption {
+	return optionFunc(func(cfg *clientConfig) {
+		cfg.initHeaders()
+		for k, vs := range headers {
+			cfg.httpHeaders[k] = vs
+		}
+	})
+}
+
+// WithHTTPClient configures the http.Client used by the RPC client.
+func WithHTTPClient(c *http.Client) ClientOption {
+	return optionFunc(func(cfg *clientConfig) {
+		cfg.httpClient = c
+	})
+}
+
+// WithHTTPAuth configures HTTP request authentication. The given provider will be called
+// whenever a request is made. Note that only one authentication provider can be active at
+// any time.
+func WithHTTPAuth(a HTTPAuth) ClientOption {
+	if a == nil {
+		panic("nil auth")
+	}
+	return optionFunc(func(cfg *clientConfig) {
+		cfg.httpAuth = a
+	})
+}
+
+// A HTTPAuth function is called by the client whenever a HTTP request is sent.
+// The function must be safe for concurrent use.
+//
+// Usually, HTTPAuth functions will call h.Set("authorization", "...") to add
+// auth information to the request.
+type HTTPAuth func(h http.Header) error
diff --git a/rpc/subscription.go b/rpc/subscription.go
index 942e764e5d..d7ba784fc5 100644
--- a/rpc/subscription.go
+++ b/rpc/subscription.go
@@ -34,7 +34,7 @@ import (
 var (
 	// ErrNotificationsUnsupported is returned when the connection doesn't support notifications
 	ErrNotificationsUnsupported = errors.New("notifications not supported")
-	// ErrNotificationNotFound is returned when the notification for the given id is not found
+	// ErrSubscriptionNotFound is returned when the notification for the given id is not found
 	ErrSubscriptionNotFound = errors.New("subscription not found")
 )
 
diff --git a/rpc/types.go b/rpc/types.go
index 959e383723..151e5ee27e 100644
--- a/rpc/types.go
+++ b/rpc/types.go
@@ -60,13 +60,15 @@ type jsonWriter interface {
 type BlockNumber int64
 
 const (
-	PendingBlockNumber  = BlockNumber(-2)
-	LatestBlockNumber   = BlockNumber(-1)
-	EarliestBlockNumber = BlockNumber(0)
+	SafeBlockNumber      = BlockNumber(-4)
+	FinalizedBlockNumber = BlockNumber(-3)
+	PendingBlockNumber   = BlockNumber(-2)
+	LatestBlockNumber    = BlockNumber(-1)
+	EarliestBlockNumber  = BlockNumber(0)
 )
 
 // UnmarshalJSON parses the given JSON fragment into a BlockNumber. It supports:
-// - "latest", "earliest" or "pending" as string arguments
+// - "safe", "finalized", "latest", "earliest" or "pending" as string arguments
 // - the block number
 // Returned errors:
 // - an invalid block number error when the given argument isn't a known strings
@@ -87,6 +89,12 @@ func (bn *BlockNumber) UnmarshalJSON(data []byte) error {
 	case "pending":
 		*bn = PendingBlockNumber
 		return nil
+	case "finalized":
+		*bn = FinalizedBlockNumber
+		return nil
+	case "safe":
+		*bn = SafeBlockNumber
+		return nil
 	}
 
 	blckNum, err := hexutil.DecodeUint64(input)
@@ -101,7 +109,7 @@ func (bn *BlockNumber) UnmarshalJSON(data []byte) error {
 }
 
 // MarshalText implements encoding.TextMarshaler. It marshals:
-// - "latest", "earliest" or "pending" as strings
+// - "safe", "finalized", "latest", "earliest" or "pending" as strings
 // - other numbers as hex
 func (bn BlockNumber) MarshalText() ([]byte, error) {
 	switch bn {
@@ -111,6 +119,10 @@ func (bn BlockNumber) MarshalText() ([]byte, error) {
 		return []byte("latest"), nil
 	case PendingBlockNumber:
 		return []byte("pending"), nil
+	case FinalizedBlockNumber:
+		return []byte("finalized"), nil
+	case SafeBlockNumber:
+		return []byte("safe"), nil
 	default:
 		return hexutil.Uint64(bn).MarshalText()
 	}
@@ -157,6 +169,14 @@ func (bnh *BlockNumberOrHash) UnmarshalJSON(data []byte) error {
 		bn := PendingBlockNumber
 		bnh.BlockNumber = &bn
 		return nil
+	case "finalized":
+		bn := FinalizedBlockNumber
+		bnh.BlockNumber = &bn
+		return nil
+	case "safe":
+		bn := SafeBlockNumber
+		bnh.BlockNumber = &bn
+		return nil
 	default:
 		if len(input) == 66 {
 			hash := common.Hash{}
diff --git a/tests/truffle/.env b/tests/truffle/.env
index d933e4cfef..e2b3e27f5c 100644
--- a/tests/truffle/.env
+++ b/tests/truffle/.env
@@ -1,4 +1,4 @@
-BSC_CHAIN_ID="99"
+BSC_CHAIN_ID=99
 CLUSTER_CIDR=99.1.0.0/16
 BOOTSTRAP_PUB_KEY=177ae5db445a2f70db781b019aedd928f5b1528a7a43448840b022408f9a21509adcce0b37c87d59da68d47a16879cc1e95a62bbac9723f7b22f4365b2afabbe
 BOOTSTRAP_TCP_PORT=30311
diff --git a/tests/truffle/scripts/bootstrap.sh b/tests/truffle/scripts/bootstrap.sh
index 0e5e00df99..653059115d 100755
--- a/tests/truffle/scripts/bootstrap.sh
+++ b/tests/truffle/scripts/bootstrap.sh
@@ -42,19 +42,38 @@ function init_genesis_data() {
      fi
 }
 
+function prepareBLSWallet(){
+     node_id=$1
+     echo "123456" > ${workspace}/storage/${node_id}/blspassword.txt
+     expect ${workspace}/scripts/create_bls_key.sh ${workspace}/storage/${node_id}
+
+     sed -i -e 's/DataDir/BLSPasswordFile = \"{{BLSPasswordFile}}\"\nBLSWalletDir = \"{{BLSWalletDir}}\"\nDataDir/g' ${workspace}/storage/${node_id}/config.toml
+     PassWordPath="/root/.ethereum/blspassword.txt"
+     sed -i -e "s:{{BLSPasswordFile}}:${PassWordPath}:g" ${workspace}/storage/${node_id}/config.toml
+     WalletPath="/root/.ethereum/bls/wallet"
+     sed -i -e "s:{{BLSWalletDir}}:${WalletPath}:g" ${workspace}/storage/${node_id}/config.toml
+}
+
 prepare
 
-# First, generate config for each validator
+# Step 1, generate config for each validator
 for((i=1;i<=${NUMS_OF_VALIDATOR};i++)); do
      init_validator "bsc-validator${i}"
 done
 
-# Then, use validator configs to generate genesis file
+# Step 2, use validator configs to generate genesis file
 generate_genesis
 
-# Finally, use genesis file to init cluster data
+# Step 3, use genesis file to init cluster data
 init_genesis_data bsc-rpc bsc-rpc
 
 for((i=1;i<=${NUMS_OF_VALIDATOR};i++)); do
      init_genesis_data validator "bsc-validator${i}"
 done
+
+#Step 4, prepare bls wallet, used by fast finality vote
+prepareBLSWallet bsc-rpc
+
+for((i=1;i<=${NUMS_OF_VALIDATOR};i++)); do
+     prepareBLSWallet "bsc-validator${i}"
+done
\ No newline at end of file
diff --git a/tests/truffle/scripts/create_bls_key.sh b/tests/truffle/scripts/create_bls_key.sh
new file mode 100644
index 0000000000..a1a4d97bd6
--- /dev/null
+++ b/tests/truffle/scripts/create_bls_key.sh
@@ -0,0 +1,17 @@
+#!/usr/bin/expect
+# 6 num wanted
+set wallet_password 123456 
+# 10 characters at least wanted
+set account_password 1234567890
+
+set timeout 5
+spawn geth bls account new --datadir [lindex $argv 0]
+expect "*assword:*"
+send "$wallet_password\r"
+expect "*assword:*"
+send "$wallet_password\r"
+expect "*assword:*"
+send "$account_password\r"
+expect "*assword:*"
+send "$account_password\r"
+expect EOF
\ No newline at end of file