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Genesis

The genesis of the blockchain is a special event and the beginning of the chain: when the first block is created.

The first block defines which chain you want to join (following the fork chain rule).

We use a genesis file to configure it and the chain & consensus.

Genesis file​

{
  // Chain & Consensus config
  "config": {
    "chainId": 63,
    "pob": {
      "intSizeBits": 2048,
      "durationLimit": "0x15180"// 24h
    }
  },
  // Genesis block config
  "nonce": "0x0",
  "timestamp": "0x638A0925",
  // RLP encoded string for consensus init
  "extraData": "0x00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000",
  "transactionHashroot": "0x0",
  "behaviorHashRoot": "0x0",
  "gasLimit": "0x1fffffffffffff",
  "difficulty": "0x1",
  //recomputed at every block, to adjust time delay between block
  "coinbase": "0x0000000000000000000000000000000000000000",
  // Create an wallet providing its public key and balance
  
}

No credited accounts but reward for first block mining is high st. an entity can keep the blockchain running in case there is few or no transactions

Examples from Hyperledger Besu: https://consensys.net/blog/quorum/hyperledger-besu-how-to-create-an-ethereum-genesis-file/

Note

For a list of EVM powered networks and their chainId, please visit https://chainlist.org/