diff --git a/avalanchego/coreth/core/keeper.go b/avalanchego/coreth/core/keeper.go
index 2ff49f9da..fa13e973a 100644
--- a/avalanchego/coreth/core/keeper.go
+++ b/avalanchego/coreth/core/keeper.go
@@ -89,10 +89,10 @@ func isPrioritisedSubmitterContract(chainID *big.Int, to *common.Address, blockT
 		return false
 	case chainID.Cmp(params.SongbirdChainID) == 0:
 		return *to == prioritisedSubmitterContractAddressSongbird &&
-			blockTime.Cmp(submitterContractActivationTimeSongbird) >= 0
+			blockTime.Cmp(submitterContractActivationTimeSongbird) > 0
 	case chainID.Cmp(params.CostonChainID) == 0:
 		return *to == prioritisedSubmitterContractAddressCoston &&
-			blockTime.Cmp(submitterContractActivationTimeCoston) >= 0
+			blockTime.Cmp(submitterContractActivationTimeCoston) > 0
 	default:
 		return false
 	}
@@ -109,13 +109,6 @@ func IsPrioritisedContractCall(chainID *big.Int, to *common.Address, ret []byte,
 	}
 }
 
-// func GetPrioritisedFTSOContract(blockTime *big.Int) string {
-// 	switch {
-// 	default:
-// 		return "0x1000000000000000000000000000000000000003"
-// 	}
-// }
-
 func GetMaximumMintRequest(blockNumber *big.Int) *big.Int {
 	switch {
 	default:
diff --git a/avalanchego/coreth/core/state_connector.go b/avalanchego/coreth/core/state_connector.go
index be17c82d5..818157adc 100644
--- a/avalanchego/coreth/core/state_connector.go
+++ b/avalanchego/coreth/core/state_connector.go
@@ -120,6 +120,18 @@ func GetDefaultAttestors(chainID *big.Int, blockTime *big.Int) []common.Address
 	switch {
 	case chainID.Cmp(songbirdChainID) == 0:
 		switch {
+		case blockTime.Cmp(submitterContractActivationTimeSongbird) > 0:
+			return []common.Address{
+				common.HexToAddress("0x2D3e7e4b19bDc920fd9C57BD3072A31F5a59FeC8"),
+				common.HexToAddress("0x442DD539Fe78D43A1a9358FF3460CfE63e2bC9CC"),
+				common.HexToAddress("0x49893c5Dfc035F4eE4E46faC014f6D4bC80F7f92"),
+				common.HexToAddress("0x5D2f75392DdDa69a2818021dd6a64937904c8352"),
+				common.HexToAddress("0x6455dC38fdF739b6fE021b30C7D9672C1c6DEb5c"),
+				common.HexToAddress("0x808441Ec3Fa1721330226E69527Bc160D8d9386a"),
+				common.HexToAddress("0x823B0f5c7758E9d3bE55bA1EA840E29ccd5D5CcB"),
+				common.HexToAddress("0x85016969b9eBDB8977975a4743c9FCEeabCEAf8A"),
+				common.HexToAddress("0x8A3D627D86A81F5D21683F4963565C63DB5e1309"),
+			}
 		case blockTime.Cmp(songbirdOct22ForkTime) > 0:
 			return []common.Address{
 				common.HexToAddress("0x2D3e7e4b19bDc920fd9C57BD3072A31F5a59FeC8"),