genesis.json

{
  "config": {
    "chainId": 27921,
    "homesteadBlock": 1,
    "eip150Block": 2,
    "eip150Hash": "0x0000000000000000000000000000000000000000000000000000000000000000",
    "eip155Block": 3,
    "eip158Block": 3,
    "clique": {
      "period": 1,
      "epoch": 30000
    }
  },
  "nonce": "0x0",
  "timestamp": "0x59ad1a99",
  "extraData": "0x0000000000000000000000000000000000000000000000000000000000000000xxxInsertSignerAddressHereNo0xPrefixxxxx0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000",
  "gasLimit": "0x47b760",
  "difficulty": "0x1",
  "mixHash": "0x0000000000000000000000000000000000000000000000000000000000000000",
  "coinbase": "0x0000000000000000000000000000000000000000",
  "alloc": {
    "xxxxx" : {
        "balance": "1000000000000000000000"
    },
    "yyyyy" : {
        "balance": "1000000000000000000000"
    },
    "zzzzz" : {
        "balance": "1000000000000000000000"
    }
  },
  "number": "0x0",
  "gasUsed": "0x0",
  "parentHash": "0x0000000000000000000000000000000000000000000000000000000000000000"
}