BIP174: Clarify proprietary fields are retained on finalization #2183

pull evanlinjin wants to merge 1 commits into bitcoin:master from evanlinjin:fix/174-explicitly-mention-proprietary-fields-as-unknown changing 1 files +1 −1

evanlinjin commented at 6:00 AM on May 30, 2026: contributor

Note that the Input Finalizer retains PSBT_IN_PROPRIETARY fields it does not understand, treating them like unknown fields so it does not clear proprietary data it cannot interpret.
evanlinjin commented at 6:04 AM on May 30, 2026: contributor

This version has proprietary fields mentioned as a separate category than unknown fields.

The other option is:

All other data except the UTXO and unknown fields (including <tt>PSBT_IN_PROPRIETARY</tt> fields the Input Finalizer does not understand) in the input key-value map should be cleared from the PSBT. The UTXO should be kept to allow Transaction Extractors to verify the final network serialized transaction.
achow101 commented at 6:06 AM on May 30, 2026: member

The other option is:

I prefer this

BIP174: Clarify proprietary fields are retained on finalization

Note that the Input Finalizer retains PSBT_IN_PROPRIETARY fields it does
not understand, treating them like unknown fields so it does not clear
proprietary data it cannot interpret.

a4668bb203

evanlinjin force-pushed on May 30, 2026
evanlinjin commented at 8:05 AM on May 30, 2026: contributor

@achow101 updated!
achow101 commented at 8:17 AM on May 30, 2026: member

ACK a4668bb203c4dd36f1d35aec04f7c2bc0d242d7b

Contributors

evanlinjin

achow101