# eth-dump-genblock Outputs an Ethereum genesis block given a Geth genesis config. Example: ``` $ cat genesis.json { "config": { "chainId": 1212, "homesteadBlock": 0, "eip150Block": 0, "eip155Block": 0, "eip158Block": 0, "byzantiumBlock": 0, "constantinopleBlock": 0, "petersburgBlock": 0, "istanbulBlock": 0, "berlinBlock": 0, "londonBlock": 0, "mergeForkBlock": 0, "terminalTotalDifficulty": 0, "terminalTotalDifficultyPassed": true, "mergeNetsplitBlock": 0 }, "alloc": {}, "coinbase": "0x0000000000000000000000000000000000000000", "difficulty": "0x01", "extraData": "", "gasLimit": "0x400000", "nonce": "0x1234", "mixhash": "0x0000000000000000000000000000000000000000000000000000000000000000", "parentHash": "0x0000000000000000000000000000000000000000000000000000000000000000", "timestamp": "0" } $ eth-dump-genblock genesis.json { "baseFeePerGas": "0x3b9aca00", "difficulty": "0x1", "extraData": "0x", "gasLimit": "0x400000", "gasUsed": "0x0", "hash": "0x2a2aa96ee3f1db21c9eab8348cfe5f6c5e3179c03b2a7c618461edd63821dbb6", "logsBloom": "0x00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000", "miner": "0x0000000000000000000000000000000000000000", "mixHash": "0x0000000000000000000000000000000000000000000000000000000000000000", "nonce": "0x0000000000001234", "number": "0x0", "parentHash": "0x0000000000000000000000000000000000000000000000000000000000000000", "receiptsRoot": "0x56e81f171bcc55a6ff8345e692c0f86e5b48e01b996cadc001622fb5e363b421", "sha3Uncles": "0x1dcc4de8dec75d7aab85b567b6ccd41ad312451b948a7413f0a142fd40d49347", "size": "0x1fd", "stateRoot": "0x56e81f171bcc55a6ff8345e692c0f86e5b48e01b996cadc001622fb5e363b421", "timestamp": "0x0", "transactionsRoot": "0x56e81f171bcc55a6ff8345e692c0f86e5b48e01b996cadc001622fb5e363b421", "uncles": [] } ```