diff --git a/bmv/bsc2/build.gradle b/bmv/bsc2/build.gradle
index 52a5494..a4caf03 100644
--- a/bmv/bsc2/build.gradle
+++ b/bmv/bsc2/build.gradle
@@ -1,4 +1,4 @@
-version = '0.6.0'
+version = '0.6.1'
 
 dependencies {
     compileOnly("foundation.icon:javaee-api:$javaeeVersion")
diff --git a/bmv/bsc2/src/main/java/foundation/icon/btp/bmv/bsc2/BTPMessageVerifier.java b/bmv/bsc2/src/main/java/foundation/icon/btp/bmv/bsc2/BTPMessageVerifier.java
index e59c3e3..ad2be5b 100644
--- a/bmv/bsc2/src/main/java/foundation/icon/btp/bmv/bsc2/BTPMessageVerifier.java
+++ b/bmv/bsc2/src/main/java/foundation/icon/btp/bmv/bsc2/BTPMessageVerifier.java
@@ -302,7 +302,7 @@ private void verify(ChainConfig config, Header head) {
         Context.require(head.getGasUsed().compareTo(head.getGasLimit()) < 0, "Invalid gas used");
         Context.require(head.getSigner(BigInteger.valueOf(config.ChainID)).equals(head.getCoinbase()), "Coinbase mismatch");
 
-        if (config.isTycho(head.getNumber())) {
+        if (config.isTycho(head.getTime())) {
             Context.require(head.getWithdrawalsHash().equals(EMPTY_WITHDRAWALS_HASH), "Invalid withdrawals hash");
         }
     }
diff --git a/bmv/bsc2/src/main/java/foundation/icon/btp/bmv/bsc2/ChainConfig.java b/bmv/bsc2/src/main/java/foundation/icon/btp/bmv/bsc2/ChainConfig.java
index d4020ca..55ca19c 100644
--- a/bmv/bsc2/src/main/java/foundation/icon/btp/bmv/bsc2/ChainConfig.java
+++ b/bmv/bsc2/src/main/java/foundation/icon/btp/bmv/bsc2/ChainConfig.java
@@ -50,11 +50,12 @@ public static ChainConfig getInstance() {
     public static ChainConfig fromChainID(BigInteger cid) {
         if (cid.longValue() == 56L) {
             // BSC Mainnet
-            return new ChainConfig(56L, 200L, 3L, BigInteger.valueOf(31302048L), null);
+            return new ChainConfig(56L, 200L, 3L, BigInteger.valueOf(31302048L),
+                    BigInteger.valueOf(1718863500L));
         } else if (cid.longValue() == 97L) {
             // BSC Testnet
             return new ChainConfig(97L, 200L, 3L, BigInteger.valueOf(31103030L),
-                    BigInteger.valueOf(39539137L));
+                    BigInteger.valueOf(1713330442L));
         } else if (cid.longValue() == 99L) {
             // Private BSC Testnet
             return new ChainConfig(99L, 200L, 3L, BigInteger.valueOf(8), null);
@@ -72,8 +73,8 @@ public boolean isHertz(BigInteger number) {
         return Hertz != null && Hertz.compareTo(number) <= 0;
     }
 
-    public boolean isTycho(BigInteger number) {
-        return Tycho != null && Tycho.compareTo(number) <= 0;
+    public boolean isTycho(long time) {
+        return Tycho != null && Tycho.longValue() <= time;
     }
 
 }
diff --git a/bmv/bsc2/src/main/java/foundation/icon/btp/bmv/bsc2/Header.java b/bmv/bsc2/src/main/java/foundation/icon/btp/bmv/bsc2/Header.java
index 5ec549e..efcaccd 100644
--- a/bmv/bsc2/src/main/java/foundation/icon/btp/bmv/bsc2/Header.java
+++ b/bmv/bsc2/src/main/java/foundation/icon/btp/bmv/bsc2/Header.java
@@ -122,7 +122,7 @@ public static Header readObject(ObjectReader r) {
         Hash withdrawalsHash = Hash.EMPTY;
         BigInteger blobGasUsed = null;
         BigInteger excessBlobGas = null;
-        if (ChainConfig.getInstance().isTycho(number)) {
+        if (ChainConfig.getInstance().isTycho(time)) {
             withdrawalsHash = r.read(Hash.class);
             blobGasUsed = r.readBigInteger();
             excessBlobGas = r.readBigInteger();
@@ -135,7 +135,7 @@ public static Header readObject(ObjectReader r) {
     }
 
     public static void writeObject(ObjectWriter w, Header o) {
-        if (ChainConfig.getInstance().isTycho(o.number)) {
+        if (ChainConfig.getInstance().isTycho(o.time)) {
             w.beginList(19);
         } else if (ChainConfig.getInstance().isHertz(o.number)) {
             w.beginList(16);
@@ -161,7 +161,7 @@ public static void writeObject(ObjectWriter w, Header o) {
             Context.require(o.baseFee != null, "no fields for hertz");
             w.write(o.baseFee);
         }
-        if (ChainConfig.getInstance().isTycho(o.number)) {
+        if (ChainConfig.getInstance().isTycho(o.time)) {
             Context.require(o.withdrawalsHash != Hash.EMPTY && o.blobGasUsed != null
                     && o.excessBlobGas != null, "no fields for tycho");
             w.write(o.withdrawalsHash);