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48f57bb35bbdbce509b8ef195de69e2a61a2511e mining: add new getCoinbaseTx() returning a struct (Sjors Provoost) d59b4cdb5772917ee13e48552d51662160104b62 mining: rename getCoinbaseTx() to ..RawTx() (Sjors Provoost) Pull request description: The first commit renames `getCoinbaseTx()` to `getCoinbaseRawTx()` to reflect that it returns a serialised transaction. This does not impact IPC clients, because they do not use the function name. The second commit then introduces a replacement `getCoinbase()` that provides a struct with everything clients need to construct a coinbase. This avoids clients having to parse and manipulate our dummy transaction. Deprecate but don't remove `getCoinbaseRawTx()`, `getCoinbaseCommitment()` and `getWitnessCommitmentIndex()`. After this change we can drop these deprecated methods, which in turn would allow us to clear the dummy transaction from the `getBlock()` result. But that is left for a followup to keep this PR focussed. See https://github.com/Sjors/bitcoin/pull/106 for an approach. Expand the `interface_ipc.py` functional test to document its usage. Can be tested using: - https://github.com/stratum-mining/sv2-tp/pull/59 ACKs for top commit: ryanofsky: Code review ACK 48f57bb35bbdbce509b8ef195de69e2a61a2511e. Just rebased and addressed comments and dropped coinbase tx "template" suffix, which is a nice change ismaelsadeeq: code review ACK 48f57bb35bbdbce509b8ef195de69e2a61a2511e vasild: ACK 48f57bb35bbdbce509b8ef195de69e2a61a2511e Tree-SHA512: c4f1d752777fb3086a1a0b7b8b06e4205dbe2f3adb41f218855ad1dee952adccc263cf82acd3bf9300cc83c2c64cebd2b27f66a69beee32d325b9a85e3643b0d