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BIP376: keep PSBT_IN_WITNESS_UTXO after finalization

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BitsagaRob committed 2026-09-04 09:01:55 +00:00
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@@ -110,7 +110,7 @@ The Input Finalizer MUST verify that a <tt>PSBT_IN_TAP_KEY_SIG</tt> field is pre
The Input Finalizer MUST construct the <tt>PSBT_IN_FINAL_SCRIPTWITNESS</tt> containing the single witness element from <tt>PSBT_IN_TAP_KEY_SIG</tt>, as per the BIP 341 key path spending rule. The Input Finalizer MUST construct the <tt>PSBT_IN_FINAL_SCRIPTWITNESS</tt> containing the single witness element from <tt>PSBT_IN_TAP_KEY_SIG</tt>, as per the BIP 341 key path spending rule.
The Input Finalizer MUST remove the <tt>PSBT_IN_SP_TWEAK</tt>, <tt>PSBT_IN_SP_SPEND_BIP32_DERIVATION</tt>, <tt>PSBT_IN_TAP_KEY_SIG</tt>, and <tt>PSBT_IN_WITNESS_UTXO</tt> fields for any input where the <tt>PSBT_IN_FINAL_SCRIPTWITNESS</tt> is present. The Input Finalizer MUST remove the <tt>PSBT_IN_SP_TWEAK</tt>, <tt>PSBT_IN_SP_SPEND_BIP32_DERIVATION</tt>, and <tt>PSBT_IN_TAP_KEY_SIG</tt> fields for any input where the <tt>PSBT_IN_FINAL_SCRIPTWITNESS</tt> is present.
== Rationale == == Rationale ==