{
    "name": "calaveras",
    "chainId": 123,
    "networkId": 123,
    "defaultHardfork": "berlin",
    "consensus": {
        "type": "poa",
        "algorithm": "clique",
        "clique": {
            "period": 30,
            "epoch": 30000
        }
    },
    "comment": "The Calaveras testnet chain",
    "url": "https://github.com/ethereum/eth1.0-specs/blob/master/network-upgrades/client-integration-testnets/calaveras.md",
    "genesis": {
        "hash": "0xeb9233d066c275efcdfed8037f4fc082770176aefdbcb7691c71da412a5670f2",
        "gasLimit": "0x47b760",
        "difficulty": "0x1",
        "nonce": "0x0000000000000000",
        "extraData": "0x00000000000000000000000000000000000000000000000000000000000000005211cea3870c7ba7c6c44b185e62eecdb864cd8c560228ce57d31efbf64c200b2c200aacec78cf17a7148e784fe95a7a750335f8b9572ee28d72e7650000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000",
        "stateRoot": "0x664c93de37eb4a72953ea42b8c046cdb64c9f0b0bca5505ade8d970d49ebdb8c",
        "timestamp": "0x60b3877f"
    },
    "hardforks": [
        {
            "name": "chainstart",
            "block": 0,
            "forkHash": "0xe34c4aff"
        },
        {
            "name": "homestead",
            "block": 0,
            "forkHash": "0xe34c4aff"
        },
        {
            "name": "tangerineWhistle",
            "block": 0,
            "forkHash": "0xe34c4aff"
        },
        {
            "name": "spuriousDragon",
            "block": 0,
            "forkHash": "0xe34c4aff"
        },
        {
            "name": "byzantium",
            "block": 0,
            "forkHash": "0xe34c4aff"
        },
        {
            "name": "constantinople",
            "block": 0,
            "forkHash": "0xe34c4aff"
        },
        {
            "name": "petersburg",
            "block": 0,
            "forkHash": "0xe34c4aff"
        },
        {
            "name": "istanbul",
            "block": 0,
            "forkHash": "0xe34c4aff"
        },
        {
            "name": "berlin",
            "block": 0,
            "forkHash": "0xe34c4aff"
        },
        {
            "name": "london",
            "block": 500,
            "forkHash": "0x173783e4"
        },
        {
            "name": "shanghai",
            "block": null,
            "forkash": null
        }
    ],
    "bootstrapNodes": []
}