{
    "name": "ropsten",
    "chainId": 3,
    "networkId": 3,
    "defaultHardfork": "istanbul",
    "consensus": {
        "type": "pow",
        "algorithm": "ethash",
        "ethash": {}
    },
    "comment": "PoW test network",
    "url": "https://github.com/ethereum/ropsten",
    "genesis": {
        "hash": "0x41941023680923e0fe4d74a34bdac8141f2540e3ae90623718e47d66d1ca4a2d",
        "timestamp": null,
        "gasLimit": 16777216,
        "difficulty": 1048576,
        "nonce": "0x0000000000000042",
        "extraData": "0x3535353535353535353535353535353535353535353535353535353535353535",
        "stateRoot": "0x217b0bbcfb72e2d57e28f33cb361b9983513177755dc3f33ce3e7022ed62b77b"
    },
    "hardforks": [
        {
            "name": "chainstart",
            "block": 0,
            "forkHash": "0x30c7ddbc"
        },
        {
            "name": "homestead",
            "block": 0,
            "forkHash": "0x30c7ddbc"
        },
        {
            "name": "tangerineWhistle",
            "block": 0,
            "forkHash": "0x30c7ddbc"
        },
        {
            "name": "spuriousDragon",
            "block": 10,
            "forkHash": "0x63760190"
        },
        {
            "name": "byzantium",
            "block": 1700000,
            "forkHash": "0x3ea159c7"
        },
        {
            "name": "constantinople",
            "block": 4230000,
            "forkHash": "0x97b544f3"
        },
        {
            "name": "petersburg",
            "block": 4939394,
            "forkHash": "0xd6e2149b"
        },
        {
            "name": "istanbul",
            "block": 6485846,
            "forkHash": "0x4bc66396"
        },
        {
            "name": "muirGlacier",
            "block": 7117117,
            "forkHash": "0x6727ef90"
        },
        {
            "name": "berlin",
            "block": 9812189,
            "forkHash": "0xa157d377"
        },
        {
            "name": "london",
            "block": 10499401,
            "forkHash": "0x7119b6b3"
        },
        {
            "name": "shanghai",
            "block": null,
            "forkash": null
        }
    ],
    "bootstrapNodes": [],
    "dnsNetworks": []
}