diff --git a/internal/configs/sharding/testnet.go b/internal/configs/sharding/testnet.go
index 7c2994071c..f640857537 100644
--- a/internal/configs/sharding/testnet.go
+++ b/internal/configs/sharding/testnet.go
@@ -42,6 +42,8 @@ const (
 
 func (ts testnetSchedule) InstanceForEpoch(epoch *big.Int) Instance {
 	switch {
+	case params.TestnetChainConfig.IsTestnetExternalEpoch(epoch):
+		return testnetV6
 	case params.TestnetChainConfig.IsHIP30(epoch):
 		return testnetV5
 	case params.TestnetChainConfig.IsFeeCollectEpoch(epoch):
@@ -169,4 +171,12 @@ var (
 		hip30CollectionAddressTestnet, testnetReshardingEpoch,
 		TestnetSchedule.BlocksPerEpoch(),
 	)
+	testnetV6 = MustNewInstance(
+		2, 30, 0, 0,
+		numeric.MustNewDecFromStr("0.0"), genesis.TNHarmonyAccountsV1,
+		genesis.TNFoundationalAccounts, emptyAllowlist,
+		feeCollectorsTestnet, numeric.MustNewDecFromStr("0.25"),
+		hip30CollectionAddressTestnet, testnetReshardingEpoch,
+		TestnetSchedule.BlocksPerEpoch(),
+	)
 )
diff --git a/internal/params/config.go b/internal/params/config.go
index b0c6c70d11..99c846b69a 100644
--- a/internal/params/config.go
+++ b/internal/params/config.go
@@ -77,6 +77,7 @@ var (
 		BlockGas30MEpoch:                      big.NewInt(1673), // 2023-11-02 17:30:00+00:00
 		MaxRateEpoch:                          EpochTBD,
 		DevnetExternalEpoch:                   EpochTBD,
+		TestnetExternalEpoch:                  EpochTBD,
 	}
 
 	// TestnetChainConfig contains the chain parameters to run a node on the harmony test network.
@@ -122,6 +123,7 @@ var (
 		BlockGas30MEpoch:                      big.NewInt(2176), // 2023-10-12 10:00:00+00:00
 		MaxRateEpoch:                          EpochTBD,
 		DevnetExternalEpoch:                   EpochTBD,
+		TestnetExternalEpoch:                  EpochTBD,
 	}
 	// PangaeaChainConfig contains the chain parameters for the Pangaea network.
 	// All features except for CrossLink are enabled at launch.
@@ -167,6 +169,7 @@ var (
 		BlockGas30MEpoch:                      big.NewInt(0),
 		MaxRateEpoch:                          EpochTBD,
 		DevnetExternalEpoch:                   EpochTBD,
+		TestnetExternalEpoch:                  EpochTBD,
 	}
 
 	// PartnerChainConfig contains the chain parameters for the Partner network.
@@ -212,6 +215,7 @@ var (
 		HIP30Epoch:                            big.NewInt(7),
 		BlockGas30MEpoch:                      big.NewInt(7),
 		MaxRateEpoch:                          EpochTBD,
+		TestnetExternalEpoch:                  EpochTBD,
 		DevnetExternalEpoch:                   big.NewInt(144),
 	}
 
@@ -259,6 +263,7 @@ var (
 		BlockGas30MEpoch:                      big.NewInt(0),
 		MaxRateEpoch:                          EpochTBD,
 		DevnetExternalEpoch:                   EpochTBD,
+		TestnetExternalEpoch:                  EpochTBD,
 	}
 
 	// LocalnetChainConfig contains the chain parameters to run for local development.
@@ -304,6 +309,7 @@ var (
 		BlockGas30MEpoch:                      big.NewInt(0),
 		MaxRateEpoch:                          EpochTBD,
 		DevnetExternalEpoch:                   EpochTBD,
+		TestnetExternalEpoch:                  EpochTBD,
 	}
 
 	// AllProtocolChanges ...
@@ -350,6 +356,7 @@ var (
 		big.NewInt(0),                      // BlockGas30M
 		big.NewInt(0),                      // BlockGas30M
 		big.NewInt(0),                      // MaxRateEpoch
+		big.NewInt(0),                      // MaxRateEpoch
 		big.NewInt(0),
 	}
 
@@ -397,6 +404,7 @@ var (
 		big.NewInt(0),        // HIP30Epoch
 		big.NewInt(0),        // BlockGas30M
 		big.NewInt(0),        // MaxRateEpoch
+		big.NewInt(0),        // MaxRateEpoch
 		big.NewInt(0),
 	}
 
@@ -564,6 +572,8 @@ type ChainConfig struct {
 
 	DevnetExternalEpoch *big.Int `json:"devnet-external-epoch,omitempty"`
 
+	TestnetExternalEpoch *big.Int `json:"testnet-external-epoch,omitempty"`
+
 	BlockGas30MEpoch *big.Int `json:"block-gas-30m-epoch,omitempty"`
 
 	// MaxRateEpoch will make sure the validator max-rate is at least equal to the minRate + the validator max-rate-increase
@@ -831,6 +841,10 @@ func (c *ChainConfig) IsDevnetExternalEpoch(epoch *big.Int) bool {
 	return isForked(c.DevnetExternalEpoch, epoch)
 }
 
+func (c *ChainConfig) IsTestnetExternalEpoch(epoch *big.Int) bool {
+	return isForked(c.TestnetExternalEpoch, epoch)
+}
+
 func (c *ChainConfig) IsMaxRate(epoch *big.Int) bool {
 	return isForked(c.MaxRateEpoch, epoch)
 }