diff --git a/base/base.go b/base/base.go
index 529c39d..1b25113 100644
--- a/base/base.go
+++ b/base/base.go
@@ -120,6 +120,8 @@ func GetChainName(id uint64) string {
 		return "Hsc"
 	case HARMONY:
 		return "Harmony"
+	case BYTOM:
+		return "Bytom"
 	default:
 		return fmt.Sprintf("Unknown(%d)", id)
 	}
@@ -131,7 +133,7 @@ func BlocksToSkip(chainId uint64) uint64 {
 		return 120
 	case ETH:
 		return 8
-	case BSC, HECO, HSC:
+	case BSC, HECO, HSC, BYTOM:
 		return 17
 	case O3:
 		return 8
@@ -150,7 +152,7 @@ func BlocksToWait(chainId uint64) uint64 {
 	switch chainId {
 	case ETH:
 		return 12
-	case BSC, HECO, HSC:
+	case BSC, HECO, HSC, BYTOM:
 		return 21
 	case ONT, NEO, NEO3, OK, SWITCHEO:
 		return 1
diff --git a/base/devnet.go b/base/devnet.go
index d9d601d..d3f826b 100644
--- a/base/devnet.go
+++ b/base/devnet.go
@@ -36,6 +36,7 @@ const (
 	PIXIE   uint64 = 316
 	RINKEBY uint64 = 402
 	HSC     uint64 = 603
+	BYTOM   uint64 = 700
 
 	SWITCHEO uint64 = 1000
 	HARMONY  uint64 = 2000001
@@ -43,8 +44,10 @@ const (
 	ENV = "devnet"
 )
 
-var CHAINS = []uint64{POLY, ETH, ONT, NEO, BSC, HECO, O3, OK, MATIC, METIS, RINKEBY, PIXIE, HSC}
+var CHAINS = []uint64{
+	POLY, ETH, ONT, NEO, BSC, HECO, O3, OK, MATIC, METIS, RINKEBY, PIXIE, HSC, HARMONY, BYTOM,
+}
 
 var ETH_CHAINS = []uint64{
-	ETH, BSC, HECO, OK, MATIC, O3, METIS, RINKEBY, PIXIE, HSC, HARMONY,
+	ETH, BSC, HECO, OK, MATIC, O3, METIS, RINKEBY, PIXIE, HSC, HARMONY, BYTOM,
 }
diff --git a/base/mainnet.go b/base/mainnet.go
index b2887b9..f122a07 100644
--- a/base/mainnet.go
+++ b/base/mainnet.go
@@ -50,14 +50,15 @@ const (
 	PIXIE   uint64 = 2000000
 	HARMONY uint64 = 2000001
 	HSC     uint64 = 3000000
+	BYTOM   uint64 = 7000001
 
 	ENV = "mainnet"
 )
 
 var CHAINS = []uint64{
-	POLY, ETH, BSC, HECO, OK, ONT, NEO, NEO3, HEIMDALL, MATIC, SWITCHEO, O3, PLT, ARBITRUM, XDAI, OPTIMISM, FANTOM, AVA, METIS, BOBA, PIXIE, OASIS, HSC,
+	POLY, ETH, BSC, HECO, OK, ONT, NEO, NEO3, HEIMDALL, MATIC, SWITCHEO, O3, PLT, ARBITRUM, XDAI, OPTIMISM, FANTOM, AVA, METIS, BOBA, PIXIE, OASIS, HSC, HARMONY, BYTOM,
 }
 
 var ETH_CHAINS = []uint64{
-	ETH, BSC, HECO, OK, MATIC, O3, PLT, ARBITRUM, XDAI, OPTIMISM, FANTOM, AVA, METIS, BOBA, PIXIE, OASIS, HSC, HARMONY,
+	ETH, BSC, HECO, OK, MATIC, O3, PLT, ARBITRUM, XDAI, OPTIMISM, FANTOM, AVA, METIS, BOBA, PIXIE, OASIS, HSC, HARMONY, HARMONY, BYTOM,
 }
diff --git a/base/testnet.go b/base/testnet.go
index 868f70c..2e6ca51 100644
--- a/base/testnet.go
+++ b/base/testnet.go
@@ -47,6 +47,7 @@ const (
 	OASIS    uint64 = 500
 	HSC      uint64 = 603
 	HARMONY  uint64 = 801
+	BYTOM    uint64 = 700
 
 	SWITCHEO uint64 = 1000
 
@@ -54,9 +55,9 @@ const (
 )
 
 var CHAINS = []uint64{
-	POLY, ETH, BSC, HECO, OK, ONT, NEO, NEO3, HEIMDALL, MATIC, SWITCHEO, O3, PLT, ARBITRUM, XDAI, OPTIMISM, FANTOM, AVA, METIS, RINKEBY, BOBA, PIXIE, OASIS, HSC,
+	POLY, ETH, BSC, HECO, OK, ONT, NEO, NEO3, HEIMDALL, MATIC, SWITCHEO, O3, PLT, ARBITRUM, XDAI, OPTIMISM, FANTOM, AVA, METIS, RINKEBY, BOBA, PIXIE, OASIS, HSC, HARMONY, BYTOM,
 }
 
 var ETH_CHAINS = []uint64{
-	ETH, BSC, HECO, OK, MATIC, O3, PLT, ARBITRUM, XDAI, OPTIMISM, FANTOM, AVA, METIS, RINKEBY, BOBA, PIXIE, OASIS, HSC, HARMONY,
+	ETH, BSC, HECO, OK, MATIC, O3, PLT, ARBITRUM, XDAI, OPTIMISM, FANTOM, AVA, METIS, RINKEBY, BOBA, PIXIE, OASIS, HSC, HARMONY, HARMONY, BYTOM,
 }