diff --git a/core/genesis.go b/core/genesis.go
index c6491a8983..d36ec07410 100644
--- a/core/genesis.go
+++ b/core/genesis.go
@@ -313,8 +313,8 @@ func DefaultGenesisBlock() *Genesis {
 	return &Genesis{
 		Config:     params.MainnetChainConfig,
 		Nonce:      66,
-		GasLimit:   5000,
-		Difficulty: big.NewInt(17179869184),
+		GasLimit:   2100000,
+		Difficulty: big.NewInt(16777216),
 		Alloc:      decodePrealloc(mainnetAllocData),
 	}
 }
diff --git a/core/genesis.json b/core/genesis.json
index 341e8d2275..ae9ff422bc 100644
--- a/core/genesis.json
+++ b/core/genesis.json
@@ -1,19 +1,18 @@
 {
 	"config": {
-        "chainId": 1,
+        "chainId": 24122000,
         "homesteadBlock": 0,
 		"eip155Block": 0,
-		"eip150Hash": "0x3f9c0f661c8b2aab93eafda1c97daed0d418c87cd300292ebcc1f7e03df0d8f3",
+		"eip150Hash": "0x4b478789950d06b19503b9936250ee69661dd6d94b5fd39ca4e83977683c312e",
         "eip155Block": 0,
         "eip158Block": 0
     },
-    "nonce": "66",
+    "nonce": "0x0000000000000042",
     "difficulty": "17179869184",
     "mixhash": "0x0000000000000000000000000000000000000000000000000000000000000000", 
     "coinbase": "0x0000000000000000000000000000000000000000", 
     "timestamp": "0x00",
-    "parentHash": "0x0000000000000000000000000000000000000000000000000000000000000000", 
-    "extraData": "0x",
+    "parentHash": "0x0000000000000000000000000000000000000000000000000000000000000000",
     "gasLimit": "5000",
     "alloc": {
         "06219483E217c9aD479f76a95426f689eF4D5951": {