genesis.json

{
    "config": {
      "chainId": 12345,
      "homesteadBlock": 0,
      "eip150Block": 0,
      "eip155Block": 0,
      "eip158Block": 0,
      "byzantiumBlock": 0,
      "constantinopleBlock": 0,
      "petersburgBlock": 0,
      "istanbulBlock": 0,
      "berlinBlock": 0,
      "clique": {
        "period": 5,
        "epoch": 30000
      }
    },
    "difficulty": "1",
    "gasLimit": "8000000",
    "extradata": "0x0000000000000000000000000000000000000000000000000000000000000000237Eb05557844aBAEE6D1f1156Db523B5693Cb040000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000",
    "alloc": {
      "0x5aA1cF584a927563000294379c6D384F43E849d6": { "balance": "1000000000000000000" },
      "0xE91D8738c178321dc1E088165e8c5924195B80d0": { "balance": "1000000000000000000" },
      "0x237Eb05557844aBAEE6D1f1156Db523B5693Cb04": { "balance": "1000000000000000000" }
    }
  }