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BIP 0174: Clarify use of PSBT_IN_FINAL_* when data is empty

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Kalle Rosenbaum 2021-10-27 20:34:53 +02:00
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@ -798,6 +798,8 @@ Or, for participants performing fA(psbt) and fB(psbt): Combine(fA(psbt), fB(psbt
The Input Finalizer must only accept a PSBT. The Input Finalizer must only accept a PSBT.
For each input, the Input Finalizer determines if the input has enough data to pass validation. If it does, it must construct the <tt>0x07</tt> Finalized scriptSig and <tt>0x08</tt> Finalized scriptWitness and place them into the input key-value map. For each input, the Input Finalizer determines if the input has enough data to pass validation. If it does, it must construct the <tt>0x07</tt> Finalized scriptSig and <tt>0x08</tt> Finalized scriptWitness and place them into the input key-value map.
If scriptSig is empty for an input, <tt>0x07</tt> should remain unset rather than assigned an empty array.
Likewise, if no scriptWitness exists for an input, <tt>0x08</tt> should remain unset rather than assigned an empty array.
All other data except the UTXO and unknown fields 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. All other data except the UTXO and unknown fields 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.
===Transaction Extractor=== ===Transaction Extractor===