{
    "nonce": "0x0000000000000042",
    "difficulty": "0x0",
    "alloc": {
    },
    "mixhash": "0x0000000000000000000000000000000000000000000000000000000000000000",
    "coinbase": "0x0000000000000000000000000000000000000000",
    "timestamp": "0x00",
    "parentHash": "0x0000000000000000000000000000000000000000000000000000000000000000",
    "extraData": "0x",
    "gasLimit": "0x4c4b40"
}

{
    "nonce": "0x0000000000000042",
    "difficulty": "0x0",
    "alloc": {
    },
    "mixhash": "0x0000000000000000000000000000000000000000000000000000000000000000",
    "coinbase": "0x3333333333333333333333333333333333333333",
    "timestamp": "0x00",
    "parentHash": "0x0000000000000000000000000000000000000000000000000000000000000000",
    "extraData": "0x",
    "gasLimit": "0x4c4b40"
}

Use a more definite address than 0x0, since some clients have coerced invalid addresses to the 0x0 address in the past.
Use a more definite address than 0x0, since some clients have coerced invalid addresses to the 0x0 address in the past.
