diff --git a/contracts/script/output/31337/GroupMessages.json b/contracts/script/output/31337/GroupMessages.json
new file mode 100644
index 00000000..0a15425f
--- /dev/null
+++ b/contracts/script/output/31337/GroupMessages.json
@@ -0,0 +1,10 @@
+{
+  "addresses": {
+    "groupMessagesDeployer": "0xf39Fd6e51aad88F6F4ce6aB8827279cffFb92266",
+    "groupMessagesImpl": "0xc0F115A19107322cFBf1cDBC7ea011C19EbDB4F8",
+    "groupMessagesProxy": "0xc96304e3c037f81dA488ed9dEa1D8F2a48278a75",
+    "groupMessagesProxyAdmin": "0xf39Fd6e51aad88F6F4ce6aB8827279cffFb92266"
+  },
+  "deploymentBlock": 107,
+  "latestUpgradeBlock": 107
+}
\ No newline at end of file
diff --git a/contracts/script/output/31337/IdentityUpdates.json b/contracts/script/output/31337/IdentityUpdates.json
new file mode 100644
index 00000000..ca52f0e1
--- /dev/null
+++ b/contracts/script/output/31337/IdentityUpdates.json
@@ -0,0 +1,10 @@
+{
+  "addresses": {
+    "identityUpdatesDeployer": "0xf39Fd6e51aad88F6F4ce6aB8827279cffFb92266",
+    "identityUpdatesImpl": "0x34B40BA116d5Dec75548a9e9A8f15411461E8c70",
+    "identityUpdatesProxy": "0xD0141E899a65C95a556fE2B27e5982A6DE7fDD7A",
+    "identityUpdatesProxyAdmin": "0xf39Fd6e51aad88F6F4ce6aB8827279cffFb92266"
+  },
+  "deploymentBlock": 109,
+  "latestUpgradeBlock": 109
+}
\ No newline at end of file
diff --git a/contracts/script/output/31337/group_messages_deployment.json b/contracts/script/output/31337/group_messages_deployment.json
deleted file mode 100644
index d22c1632..00000000
--- a/contracts/script/output/31337/group_messages_deployment.json
+++ /dev/null
@@ -1,10 +0,0 @@
-{
-  "addresses": {
-    "groupMessagesDeployer": "0xf39Fd6e51aad88F6F4ce6aB8827279cffFb92266",
-    "groupMessagesImpl": "0xe8D2A1E88c91DCd5433208d4152Cc4F399a7e91d",
-    "groupMessagesProxy": "0x5067457698Fd6Fa1C6964e416b3f42713513B3dD",
-    "groupMessagesProxyAdmin": "0xf39Fd6e51aad88F6F4ce6aB8827279cffFb92266"
-  },
-  "deploymentBlock": 100,
-  "latestUpgradeBlock": 100
-}
\ No newline at end of file
diff --git a/contracts/script/output/31337/identity_updates_deployment.json b/contracts/script/output/31337/identity_updates_deployment.json
deleted file mode 100644
index 1ec61bc4..00000000
--- a/contracts/script/output/31337/identity_updates_deployment.json
+++ /dev/null
@@ -1,10 +0,0 @@
-{
-  "addresses": {
-    "identityUpdatesDeployer": "0xf39Fd6e51aad88F6F4ce6aB8827279cffFb92266",
-    "identityUpdatesImpl": "0x18E317A7D70d8fBf8e6E893616b52390EbBdb629",
-    "identityUpdatesProxy": "0x4b6aB5F819A515382B0dEB6935D793817bB4af28",
-    "identityUpdatesProxyAdmin": "0xf39Fd6e51aad88F6F4ce6aB8827279cffFb92266"
-  },
-  "deploymentBlock": 102,
-  "latestUpgradeBlock": 102
-}
\ No newline at end of file
diff --git a/contracts/script/utils/Environment.sol b/contracts/script/utils/Environment.sol
index 14ab89d4..1cc2a346 100644
--- a/contracts/script/utils/Environment.sol
+++ b/contracts/script/utils/Environment.sol
@@ -4,6 +4,6 @@ pragma solidity 0.8.28;
 import "forge-std/src/Script.sol";
 
 contract Environment is Script {
-    string public constant XMTP_GROUP_MESSAGES_OUTPUT_JSON = "group_messages_deployment";
-    string public constant XMTP_IDENTITY_UPDATES_OUTPUT_JSON = "identity_updates_deployment";
+    string public constant XMTP_GROUP_MESSAGES_OUTPUT_JSON = "GroupMessages";
+    string public constant XMTP_IDENTITY_UPDATES_OUTPUT_JSON = "IdentityUpdates";
 }
diff --git a/dev/baked/Dockerfile b/dev/baked/Dockerfile
index ffe2de5d..06e75b9a 100644
--- a/dev/baked/Dockerfile
+++ b/dev/baked/Dockerfile
@@ -29,8 +29,8 @@ RUN dev/docker/anvil-background && \
     sleep 5
 
 RUN echo "export XMTPD_CONTRACTS_NODES_ADDRESS="$(jq -r '.deployedTo' build/Nodes.json)"" >> contracts.env && \
-    echo "export XMTPD_CONTRACTS_MESSAGES_ADDRESS="$(jq -r '.deployedTo' build/GroupMessages.json)""  >> contracts.env && \
-    echo "export XMTPD_CONTRACTS_IDENTITY_UPDATES_ADDRESS="$(jq -r '.deployedTo' build/IdentityUpdates.json)""  >> contracts.env
+    echo "export XMTPD_CONTRACTS_MESSAGES_ADDRESS="$(jq -r '.addresses.groupMessagesProxy' contracts/script/output/31337/GroupMessages.json)""  >> contracts.env && \
+    echo "export XMTPD_CONTRACTS_IDENTITY_UPDATES_ADDRESS="$(jq -r '.addresses.identityUpdatesProxy' contracts/script/output/31337/IdentityUpdates.json)""  >> contracts.env
 
 # ACTUAL IMAGE -------------------------------------------------------
 
diff --git a/dev/contracts/common b/dev/contracts/common
index a88be5a1..a8035b21 100644
--- a/dev/contracts/common
+++ b/dev/contracts/common
@@ -11,7 +11,7 @@ function forge_deploy_script() {
             fi
 
             echo -e "✅ GroupMessages contract deployed.\n"
-            cat script/output/31337/group_messages_deployment.json
+            cat script/output/31337/GroupMessages.json
             echo -e "\n"
             ;;
 
@@ -23,7 +23,7 @@ function forge_deploy_script() {
             fi
 
             echo -e "✅ IdentityUpdates contract deployed.\n"
-            cat script/output/31337/identity_updates_deployment.json
+            cat script/output/31337/IdentityUpdates.json
             echo -e "\n"
             ;;
 
diff --git a/dev/local.env b/dev/local.env
index 482f2c3f..b934bddc 100755
--- a/dev/local.env
+++ b/dev/local.env
@@ -2,16 +2,19 @@
 
 source dev/contracts/.env
 
+# Anvil scripts output folder
+ANVIL_SCRIPTS_OUTPUT=contracts/script/output/31337
+
 # DB Options
 export XMTPD_DB_WRITER_CONNECTION_STRING="postgres://postgres:xmtp@localhost:8765/postgres?sslmode=disable"
 
 # Contract Options
 export XMTPD_CONTRACTS_RPC_URL=$DOCKER_RPC_URL  # From contracts/.env
-XMTPD_CONTRACTS_NODES_ADDRESS="$(jq -r '.deployedTo' build/Nodes.json)" # Built by contracts/deploy-local
+XMTPD_CONTRACTS_NODES_ADDRESS="$(jq -r '.deployedTo' build/Nodes.json)" # Built by contracts/deploy-local - TODO: move deployment to forge script
 export XMTPD_CONTRACTS_NODES_ADDRESS
-XMTPD_CONTRACTS_MESSAGES_ADDRESS="$(jq -r '.deployedTo' build/GroupMessages.json)" # Built by contracts/deploy-local
+XMTPD_CONTRACTS_MESSAGES_ADDRESS="$(jq -r '.addresses.groupMessagesProxy' ${ANVIL_SCRIPTS_OUTPUT}/GroupMessages.json)" # Built by contracts/deploy-local
 export XMTPD_CONTRACTS_MESSAGES_ADDRESS
-XMTPD_CONTRACTS_IDENTITY_UPDATES_ADDRESS="$(jq -r '.deployedTo' build/IdentityUpdates.json)" # Built by contracts/deploy-local
+XMTPD_CONTRACTS_IDENTITY_UPDATES_ADDRESS="$(jq -r '.addresses.identityUpdatesProxy' ${ANVIL_SCRIPTS_OUTPUT}/IdentityUpdates.json)" # Built by contracts/deploy-local
 export XMTPD_CONTRACTS_IDENTITY_UPDATES_ADDRESS
 
 export ANVIL_ACC_1_PRIVATE_KEY="0x59c6995e998f97a5a0044966f0945389dc9e86dae88c7a8412f4603b6b78690d"
diff --git a/go.mod b/go.mod
index 8de162ae..fbec9ffe 100644
--- a/go.mod
+++ b/go.mod
@@ -29,6 +29,7 @@ require (
 require (
 	github.com/golang-jwt/jwt/v5 v5.2.1
 	github.com/grpc-ecosystem/go-grpc-prometheus v1.2.0
+	github.com/valyala/fastjson v1.6.4
 )
 
 require (
diff --git a/go.sum b/go.sum
index 6d9f6939..9ca86d01 100644
--- a/go.sum
+++ b/go.sum
@@ -1153,6 +1153,8 @@ github.com/tyler-smith/go-bip39 v1.1.0/go.mod h1:gUYDtqQw1JS3ZJ8UWVcGTGqqr6YIN3C
 github.com/urfave/cli/v2 v2.25.7 h1:VAzn5oq403l5pHjc4OhD54+XGO9cdKVL/7lDjF+iKUs=
 github.com/urfave/cli/v2 v2.25.7/go.mod h1:8qnjx1vcq5s2/wpsqoZFndg2CE5tNFyrTvS6SinrnYQ=
 github.com/valyala/bytebufferpool v1.0.0/go.mod h1:6bBcMArwyJ5K/AmCkWv1jt77kVWyCJ6HpOuEn7z0Csc=
+github.com/valyala/fastjson v1.6.4 h1:uAUNq9Z6ymTgGhcm0UynUAB6tlbakBrz6CQFax3BXVQ=
+github.com/valyala/fastjson v1.6.4/go.mod h1:CLCAqky6SMuOcxStkYQvblddUtoRxhYMGLrsQns1aXY=
 github.com/valyala/fasttemplate v1.0.1/go.mod h1:UQGH1tvbgY+Nz5t2n7tXsz52dQxojPUpymEIMZ47gx8=
 github.com/valyala/fasttemplate v1.2.1/go.mod h1:KHLXt3tVN2HBp8eijSv/kGJopbvo7S+qRAEEKiv+SiQ=
 github.com/vbatts/tar-split v0.11.6 h1:4SjTW5+PU11n6fZenf2IPoV8/tz3AaYHMWjf23envGs=
diff --git a/pkg/blockchain/blockchainPublisher_test.go b/pkg/blockchain/blockchainPublisher_test.go
index aee4e0b1..36bd99e2 100644
--- a/pkg/blockchain/blockchainPublisher_test.go
+++ b/pkg/blockchain/blockchainPublisher_test.go
@@ -47,7 +47,7 @@ func TestPublishIdentityUpdate(t *testing.T) {
 		{
 			name:           "happy path",
 			inboxId:        testutils.RandomGroupID(),
-			identityUpdate: testutils.RandomBytes(100),
+			identityUpdate: testutils.RandomBytes(104),
 			ctx:            context.Background(),
 			wantErr:        false,
 		},
diff --git a/pkg/testutils/config.go b/pkg/testutils/config.go
index 0f7c456d..42eccff8 100644
--- a/pkg/testutils/config.go
+++ b/pkg/testutils/config.go
@@ -5,10 +5,12 @@ import (
 	"os"
 	"path"
 	"path/filepath"
+	"strings"
 	"testing"
 	"time"
 
 	"github.com/stretchr/testify/require"
+	"github.com/valyala/fastjson"
 	"github.com/xmtp/xmtpd/pkg/config"
 )
 
@@ -48,6 +50,7 @@ func rootPath(t *testing.T) string {
 /*
 *
 Parse the JSON file at this location to get the deployed contract info
+TODO: deprecate in favor of getProxyAddress
 *
 */
 func getDeployedTo(t *testing.T, fileName string) string {
@@ -65,19 +68,40 @@ func getDeployedTo(t *testing.T, fileName string) string {
 	return info.DeployedTo
 }
 
+/*
+*
+Parse the JSON file at this location to get the deployed contract proxy address
+*
+*/
+func getProxyAddress(t *testing.T, fileName string) string {
+	data, err := os.ReadFile(fileName)
+	if err != nil {
+		t.Fatalf("Failed to read json: %v", err)
+	}
+
+	switch {
+	case strings.Contains(fileName, "GroupMessages.json"):
+		return fastjson.GetString(data, "addresses", "groupMessagesProxy")
+	case strings.Contains(fileName, "IdentityUpdates.json"):
+		return fastjson.GetString(data, "addresses", "identityUpdatesProxy")
+	default:
+		return ""
+	}
+}
+
 func GetContractsOptions(t *testing.T) config.ContractsOptions {
 	rootDir := rootPath(t)
 
 	return config.ContractsOptions{
 		RpcUrl: BLOCKCHAIN_RPC_URL,
-		MessagesContractAddress: getDeployedTo(
+		MessagesContractAddress: getProxyAddress(
 			t,
-			path.Join(rootDir, "./build/GroupMessages.json"),
+			path.Join(rootDir, "./contracts/script/output/31337/GroupMessages.json"),
 		),
 		NodesContractAddress: getDeployedTo(t, path.Join(rootDir, "./build/Nodes.json")),
-		IdentityUpdatesContractAddress: getDeployedTo(
+		IdentityUpdatesContractAddress: getProxyAddress(
 			t,
-			path.Join(rootDir, "./build/IdentityUpdates.json"),
+			path.Join(rootDir, "./contracts/script/output/31337/IdentityUpdates.json"),
 		),
 		RefreshInterval: 100 * time.Millisecond,
 		ChainID:         31337,