BIP174: Mention sighash type requirement in Input Finalizer section #2182

pull evanlinjin wants to merge 1 commits into bitcoin:master from evanlinjin:fix/174-input-finalizer-clarification changing 1 files +1 −1

evanlinjin commented at 8:20 AM on May 29, 2026: contributor
Description

Mention the PSBT_IN_SIGHASH_TYPE constraint in the Input Finalizer section. This mirrors the description of the per-input field.

Rationale

Implementers of the Input Finalizer role have been missing this check.
- https://github.com/bitcoindevkit/bdk-tx/issues/75
- https://github.com/rust-bitcoin/rust-miniscript/blob/a19d92c96a9d398568d9e64415db2681581141c6/src/psbt/finalizer.rs#L428

BIP174: Mention sighash type requirement in Input Finalizer section

This mirrors the existing PSBT_IN_SIGHASH_TYPE constraint from the
per-input field description. Added to the Input Finalizer section so it
is not missed.

9633048fc2

jonatack added the label Proposed BIP modification on May 29, 2026
jonatack added the label Pending acceptance on May 29, 2026
jonatack commented at 1:05 PM on May 29, 2026: member

cc BIP author @achow101 for feedback
achow101 commented at 6:58 PM on May 29, 2026: member

ACK 9633048fc26b28c17b87cba415d58a142f8d6647
murchandamus removed the label Pending acceptance on May 29, 2026
murchandamus merged this on May 29, 2026
murchandamus closed this on May 29, 2026

Contributors

evanlinjin

jonatack

achow101

Labels

Proposed BIP modification

BIP174: Mention sighash type requirement in Input Finalizer section #2182

Description

Rationale