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e0463b4e8crpc: add coinbase_tx field to getblock (Sjors Provoost) Pull request description: This adds a `coinbase_tx` field to the `getblock` RPC result, starting at verbosity level 1. It contains only fields guaranteed to be small, i.e. not the outputs. Initial motivation for this was to more efficiently scan for BIP54 compliance. Without this change, it requires verbosity level 2 to get the coinbase, which makes such scan very slow. See https://github.com/bitcoin-inquisition/bitcoin/pull/99#issuecomment-3852370506. Adding these fields should be useful in general though and hardly makes the verbosity 1 result longer. ``` bitcoin rpc help getblock getblock "blockhash" ( verbosity ) If verbosity is 0, returns a string that is serialized, hex-encoded data for block 'hash'. If verbosity is 1, returns an Object with information about block <hash>. If verbosity is 2, returns an Object with information about block <hash> and information about each transaction. ... Result (for verbosity = 1): { (json object) "hash" : "hex", (string) the block hash (same as provided) "confirmations" : n, (numeric) The number of confirmations, or -1 if the block is not on the main chain "size" : n, (numeric) The block size "strippedsize" : n, (numeric) The block size excluding witness data "weight" : n, (numeric) The block weight as defined in BIP 141 "coinbase_tx" : { (json object) Coinbase transaction metadata "version" : n, (numeric) The coinbase transaction version "locktime" : n, (numeric) The coinbase transaction's locktime (nLockTime) "sequence" : n, (numeric) The coinbase input's sequence number (nSequence) "coinbase" : "hex", (string) The coinbase input's script "witness" : "hex" (string, optional) The coinbase input's first (and only) witness stack element, if present }, "height" : n, (numeric) The block height or index "version" : n, (numeric) The block version ... ``` ``` bitcoin rpc getblock 000000000000000000013c986f9aebe800a78454c835ccd07ecae2650bfad3f6 1 ``` ```json { "hash": "000000000000000000013c986f9aebe800a78454c835ccd07ecae2650bfad3f6", "confirmations": 2, "height": 935113, "version": 561807360, "...": "...", "weight": 3993624, "coinbase_tx": { "version": 2, "locktime": 0, "sequence": 4294967295, "coinbase": "03c9440e04307c84692f466f756e6472792055534120506f6f6c202364726f70676f6c642ffabe6d6d9a8624235259d3680c972b0dd42fa3fe1c45c5e5ae5a96fe10c182bda17080e70100000000000000184b17d3f138020000000000", "witness": "0000000000000000000000000000000000000000000000000000000000000000" }, "tx": [ "70eb053340c7978c5aa1b34d75e1ba9f9d1879c09896317f306f30c243536b62", "5bcf8ed2900cb70721e808b8977898e47f2c9001fcee83c3ccd29e51c7775dcd", "3f1991771aef846d7bb379d2931cccc04e8421a630ec9f52d22449d028d2e7f4", "..." ] } ``` ACKs for top commit: sedited: Re-ACKe0463b4e8cdarosior: re-utACKe0463b4e8cTree-SHA512: 1b3e7111e6a0edffde8619c49b3e9bca833c8e90e416defc66811bd56dd00d45b69a84c8fd9715508f4e6515f77ac4fb5c59868ab997ae111017c78c05b74ba3
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