diff --git a/common/types/message/message.go b/common/types/message/message.go
index 2fb833c2bc..1b2478d896 100644
--- a/common/types/message/message.go
+++ b/common/types/message/message.go
@@ -18,7 +18,7 @@ const (
 	StatusProofError
 )
 
-// ProofType represents the type of prover.
+// ProofType represents the type of task.
 type ProofType uint8
 
 func (r ProofType) String() string {
diff --git a/coordinator/internal/logic/auth/login.go b/coordinator/internal/logic/auth/login.go
index a2f04ebeb4..0fd13f4211 100644
--- a/coordinator/internal/logic/auth/login.go
+++ b/coordinator/internal/logic/auth/login.go
@@ -8,7 +8,6 @@ import (
 	"github.com/scroll-tech/go-ethereum/log"
 	"gorm.io/gorm"
 
-	"scroll-tech/common/types/message"
 	"scroll-tech/common/version"
 
 	"scroll-tech/coordinator/internal/config"
@@ -17,12 +16,6 @@ import (
 	"scroll-tech/coordinator/internal/types"
 )
 
-var (
-	proofChunkTypeString  = fmt.Sprintf("%d", message.ProofTypeChunk)
-	proofBatchTypeString  = fmt.Sprintf("%d", message.ProofTypeBatch)
-	proofBundleTypeString = fmt.Sprintf("%d", message.ProofTypeBundle)
-)
-
 // LoginLogic the auth logic
 type LoginLogic struct {
 	cfg          *config.Config
@@ -78,20 +71,20 @@ func (l *LoginLogic) Check(login *types.LoginParameter) error {
 	if len(login.Message.ProverTypes) > 0 {
 		vks := make(map[string]struct{})
 		for _, proverType := range login.Message.ProverTypes {
-			if proverType == proofChunkTypeString {
+			switch proverType {
+			case types.ProverTypeChunk:
 				for vk := range l.chunkVks {
 					vks[vk] = struct{}{}
 				}
-			}
-			if proverType == proofBatchTypeString {
+			case types.ProverTypeBatch:
 				for vk := range l.batchVKs {
 					vks[vk] = struct{}{}
 				}
-			}
-			if proverType == proofBundleTypeString {
 				for vk := range l.bundleVks {
 					vks[vk] = struct{}{}
 				}
+			default:
+				log.Error("invalid prover_type", "value", proverType)
 			}
 		}
 
diff --git a/coordinator/internal/logic/verifier/verifier.go b/coordinator/internal/logic/verifier/verifier.go
index 03c5f87811..478c737c87 100644
--- a/coordinator/internal/logic/verifier/verifier.go
+++ b/coordinator/internal/logic/verifier/verifier.go
@@ -50,7 +50,11 @@ func NewVerifier(cfg *config.VerifierConfig) (*Verifier, error) {
 		BatchVKMap: make(map[string]string),
 	}
 
-	batchVK, err := v.readVK(path.Join(cfg.AssetsPath, "agg_vk.vkey"))
+	bundleVK, err := v.readVK(path.Join(cfg.AssetsPath, "bundle_vk.vkey"))
+	if err != nil {
+		return nil, err
+	}
+	batchVK, err := v.readVK(path.Join(cfg.AssetsPath, "batch_vk.vkey"))
 	if err != nil {
 		return nil, err
 	}
@@ -58,6 +62,7 @@ func NewVerifier(cfg *config.VerifierConfig) (*Verifier, error) {
 	if err != nil {
 		return nil, err
 	}
+	v.BundleVkMap[cfg.ForkName] = bundleVK
 	v.BatchVKMap[cfg.ForkName] = batchVK
 	v.ChunkVKMap[cfg.ForkName] = chunkVK
 
@@ -147,7 +152,7 @@ func (v *Verifier) loadEmbedVK() error {
 		return err
 	}
 
-	v.BatchVKMap["bernoulli"] = base64.StdEncoding.EncodeToString(batchVKBytes)
-	v.ChunkVKMap["bernoulli"] = base64.StdEncoding.EncodeToString(chunkVkBytes)
+	v.BatchVKMap["curie"] = base64.StdEncoding.EncodeToString(batchVKBytes)
+	v.ChunkVKMap["curie"] = base64.StdEncoding.EncodeToString(chunkVkBytes)
 	return nil
 }
diff --git a/coordinator/internal/types/auth.go b/coordinator/internal/types/auth.go
index d58fd41e10..faa980fa8a 100644
--- a/coordinator/internal/types/auth.go
+++ b/coordinator/internal/types/auth.go
@@ -28,11 +28,11 @@ type LoginSchema struct {
 
 // Message the login message struct
 type Message struct {
-	Challenge     string   `form:"challenge" json:"challenge" binding:"required"`
-	ProverVersion string   `form:"prover_version" json:"prover_version" binding:"required"`
-	ProverName    string   `form:"prover_name" json:"prover_name" binding:"required"`
-	ProverTypes   []string `form:"prover_types" json:"prover_types"`
-	VKs           []string `form:"vks" json:"vks"`
+	Challenge     string       `form:"challenge" json:"challenge" binding:"required"`
+	ProverVersion string       `form:"prover_version" json:"prover_version" binding:"required"`
+	ProverName    string       `form:"prover_name" json:"prover_name" binding:"required"`
+	ProverTypes   []ProverType `form:"prover_types" json:"prover_types"`
+	VKs           []string     `form:"vks" json:"vks"`
 }
 
 // LoginParameter for /login api
diff --git a/coordinator/internal/types/auth_test.go b/coordinator/internal/types/auth_test.go
index c65a17c256..eaaddf3ca6 100644
--- a/coordinator/internal/types/auth_test.go
+++ b/coordinator/internal/types/auth_test.go
@@ -2,14 +2,11 @@ package types
 
 import (
 	"encoding/hex"
-	"fmt"
 	"testing"
 
 	"github.com/scroll-tech/go-ethereum/common"
 	"github.com/scroll-tech/go-ethereum/crypto"
 	"github.com/stretchr/testify/assert"
-
-	"scroll-tech/common/types/message"
 )
 
 func TestAuthMessageSignAndVerify(t *testing.T) {
@@ -24,7 +21,7 @@ func TestAuthMessageSignAndVerify(t *testing.T) {
 				ProverName:    "test1",
 				ProverVersion: "v0.0.1",
 				Challenge:     "abcdef",
-				ProverTypes:   []string{"2"},
+				ProverTypes:   []ProverType{ProverTypeBatch},
 				VKs:           []string{"vk1", "vk2"},
 			},
 			PublicKey: publicKeyHex,
@@ -65,7 +62,7 @@ func TestGenerateSignature(t *testing.T) {
 			ProverName:    "test",
 			ProverVersion: "v4.1.115-4dd11c6-000000-000000",
 			Challenge:     "eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJleHAiOjE3MTk1NjkyNDAsIm9yaWdfaWF0IjoxNzE5NTY1NjQwLCJyYW5kb20iOiJPRExnNEZtUW1MOEwzTDRvZ3BMcnl6c09EN1ZXd0FoNmd3bVpzVURJV3M0PSJ9.3Oq7fDtFnKGbPyjc8fslzfftyzreQbi-lAr0_HFy54w",
-			ProverTypes:   []string{fmt.Sprintf("%d", message.ProofTypeChunk)},
+			ProverTypes:   []ProverType{ProverTypeChunk},
 			VKs:           []string{"mock_chunk_vk"},
 		},
 		PublicKey: publicKeyHex,
diff --git a/coordinator/internal/types/prover.go b/coordinator/internal/types/prover.go
new file mode 100644
index 0000000000..b7ce464f76
--- /dev/null
+++ b/coordinator/internal/types/prover.go
@@ -0,0 +1,26 @@
+package types
+
+import "fmt"
+
+// ProverType represents the type of prover.
+type ProverType uint8
+
+func (r ProverType) String() string {
+	switch r {
+	case ProverTypeChunk:
+		return "prover type chunk"
+	case ProverTypeBatch:
+		return "prover type batch"
+	default:
+		return fmt.Sprintf("illegal prover type: %d", r)
+	}
+}
+
+const (
+	// ProverTypeUndefined is an unknown prover type
+	ProverTypeUndefined ProverType = iota
+	// ProverTypeChunk signals it's a chunk prover, which can prove chunk_tasks
+	ProverTypeChunk
+	// ProverTypeBatch signals it's a batch prover, which can prove batch_tasks and bundle_tasks
+	ProverTypeBatch
+)