Create Your Genesis File

Learn how to create your own genesis file.

Create File

In your Precompile-EVM project, create a file called evm-configuration-genesis.json in the directory tests/precompile/genesis/ and open it. You can use the command below as a shortcut to open the file in VSCode:

code ./tests/precompile/genesis/evm-configuration-genesis.json

Fill with template

Paste the following template in the new file:

{
    "config": {
      "chainId":  <your-chain-id>,
      "homesteadBlock": 0,
      "eip150Block": 0,
      "eip150Hash": "0x2086799aeebeae135c246c65021c82b4e15a2c451340993aacfd2751886514f0",
      "eip155Block": 0,
      "eip158Block": 0,
      "byzantiumBlock": 0,
      "constantinopleBlock": 0,
      "petersburgBlock": 0,
      "istanbulBlock": 0,
      "muirGlacierBlock": 0,
      "subnetEVMTimestamp": 0,
      "feeConfig": {
        "gasLimit": <your-gas-limit>,
        "minBaseFee": <your-min-base-fee>,
        "targetGas": <your-target-gas>,
        "baseFeeChangeDenominator": 36,
        "minBlockGasCost": <your-min-block-gas-cost>,
        "maxBlockGasCost": <your-max-block-gas-cost>,
        "targetBlockRate": <your-target-block-rate>,
        "blockGasCostStep": <your-block-gas-cost-step>
      },
      "allowFeeRecipients": false
    },
    "alloc": {
      "<your-test-wallet-address>": {
        "balance": "<your-initial-balance-converted-to-hex>"
      }
    },
    "nonce": "0x0",
    "timestamp": "0x0",
    "extraData": "0x00",
    "gasLimit": <your-gas-limit>,
    "difficulty": "0x0",
    "mixHash": "0x0000000000000000000000000000000000000000000000000000000000000000",
    "coinbase": "0x0000000000000000000000000000000000000000",
    "number": "0x0",
    "gasUsed": "0x0",
    "parentHash": "0x0000000000000000000000000000000000000000000000000000000000000000"
  }

Warning about gasLimit

If you do decide to set your own gasLimit, please set all gasLimit keys equal to the same value!

If you set the 'gasLimit' keys to different values, you will still be able to deploy a blockchain, but it will halt during initialization!

Genesis Block

Setup Your ChainID

Create Your Genesis File

Create File

Fill with template

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