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authorAndrew Chow <github@achow101.com>2022-12-21 12:44:31 -0500
committerAndrew Chow <github@achow101.com>2022-12-21 12:58:46 -0500
commitf3bc1a72825fe2b51f4bc20e004cef464f05b965 (patch)
tree2a148bf7b2bef1b45cf05e869cc56d0af0bffa09 /src/test/fuzz/prevector.cpp
parent6d40a1a7e7f09ff2c32e53237f968adf8300d028 (diff)
parentb2aa9e85289fc654106a890c35935e9c76c411fb (diff)
Merge bitcoin/bitcoin#26265: POLICY: Relax MIN_STANDARD_TX_NONWITNESS_SIZE to 65 non-witness bytes
b2aa9e85289fc654106a890c35935e9c76c411fb Add release note for MIN_STANDARD_TX_NONWITNESS_SIZE relaxation (Greg Sanders) 8c5b3646b5afe8a61f5c66478d8e11f0d2ce5108 Relax MIN_STANDARD_TX_NONWITNESS_SIZE to 65 non-witness bytes (Greg Sanders) Pull request description: Since the original fix was set to be a "reasonable" transaction to reduce allocations and the true motivation later revealed, it makes sense to relax this check to something more principled. There are more exotic transaction patterns that could take advantage of a relaxed requirement, such as 1 input, 1 output OP_RETURN to burn a utxo to fees for CPFP purposes when change isn't practical. Two changes could be accomplished: 1) Anything not 64 bytes could be allowed 2) Anything above 64 bytes could be allowed In the Great Consensus Cleanup, suggestion (2) was proposed as a consensus change, and is the simpler of the two suggestions. It would not allow an "empty" OP_RETURN but would reduce the required padding from 22 bytes to 5. The functional test is also modified to test the actual case we care about: 64 bytes Related mailing list discussions here: https://lists.linuxfoundation.org/pipermail/bitcoin-dev/2022-October/020995.html And a couple years earlier: https://lists.linuxfoundation.org/pipermail/bitcoin-dev/2020-May/017883.html ACKs for top commit: achow101: reACK b2aa9e85289fc654106a890c35935e9c76c411fb glozow: reACK b2aa9e85289fc654106a890c35935e9c76c411fb pablomartin4btc: re-ACK https://github.com/bitcoin/bitcoin/commit/b2aa9e85289fc654106a890c35935e9c76c411fb jonatack: ACK b2aa9e85289fc654106a890c35935e9c76c411fb with some suggestions Tree-SHA512: c1ec1af9ddcf31b2272209a4f1ee0c5607399f8172e5a1dfd4604cf98bfb933810dd9369a5917ad122add003327c9fcf6ee26995de3aca41d5c42dba527991ad
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