bitcoin: coinbase 的tx结构

查找下 block 400000的coinbase的交易.

第一个 Transactions 就是coinbase a8d0c0184dde994a09ec054286f1ce581bebf46446a512166eae7628734ea0a5.

使用rpc命令 getrawtransaction得到 rawtransaction.

{
    "result": "01000000010000000000000000000000000000000000000000000000000000000000000000ffffffff3f03801a060004cc2acf560433c30f37085d4a39ad543b0c000a425720537570706f727420384d200a666973686572206a696e78696e092f425720506f6f6c2fffffffff012fd8ff96000000001976a914721afdf638d570285d02d3076d8be6a03ee0794d88ac00000000",
    "error": null,
    "id": null
}

在使用 decoderawtransaction 解析 上一步得到的 rawtransaction,即 01000000010000000000000000000000000000000000000000000000000000000000000000ffffffff3f03801a060004cc2acf560433c30f37085d4a39ad543b0c000a425720537570706f727420384d200a666973686572206a696e78696e092f425720506f6f6c2fffffffff012fd8ff96000000001976a914721afdf638d570285d02d3076d8be6a03ee0794d88ac00000000

结果如下:

{
    "result": {
        "txid": "a8d0c0184dde994a09ec054286f1ce581bebf46446a512166eae7628734ea0a5",
        "hash": "a8d0c0184dde994a09ec054286f1ce581bebf46446a512166eae7628734ea0a5",
        "size": 148,
        "vsize": 148,
        "version": 1,
        "locktime": 0,
        "vin": [
            {
                "coinbase": "03801a060004cc2acf560433c30f37085d4a39ad543b0c000a425720537570706f727420384d200a666973686572206a696e78696e092f425720506f6f6c2f",
                "sequence": 4294967295
            }
        ],
        "vout": [
            {
                "value": 25.33349423,
                "n": 0,
                "scriptPubKey": {
                    "asm": "OP_DUP OP_HASH160 721afdf638d570285d02d3076d8be6a03ee0794d OP_EQUALVERIFY OP_CHECKSIG",
                    "hex": "76a914721afdf638d570285d02d3076d8be6a03ee0794d88ac",
                    "reqSigs": 1,
                    "type": "pubkeyhash",
                    "addresses": [
                        "1BQLNJtMDKmMZ4PyqVFfRuBNvoGhjigBKF"
                    ]
                }
            }
        ]
    },
    "error": null,
    "id": null
}

coinbase tx手动分析下

01000000                               version

01                                              var_int

0000000000000000000000000000000000000000000000000000000000000000                                    tx_id

ffffffff                                                             tx_index

3f03801a060004cc2acf560433c30f37085d4a39ad543b0c000a425720537570706f727420384d200a666973686572206a696e78696e092f425720506f6f6c2f  #自定义内容

ffffffff                                    tx_in_sequence

01                                           var_int

2fd8ff9600000000  amount 发币数量

19                                 没实际含义

76a914                        OP_DUP OP_HASH160

721afdf638d570285d02d3076d8be6a03ee0794d   addr_rmd160

88 ac                       OP_EQUALVERIFY OP_CHECKSIG

00000000            lock_time

tx结构不一样 https://btc.com/be5598cbc8881748220128c19afc6f989590d60e66bee8c0e35f3409cb281fe3
bip143

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参考:

sipa的回答 https://bitcoin.stackexchange.com/a/20725

https://en.bitcoin.it/wiki/Transaction

https://en.bitcoin.it/wiki/Protocol_documentation#Variable_length_integer

https://bitcoin.stackexchange.com/a/5241