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bip-373: Fix GLOBAL_XPUB key name and clean up compressed vs x-only note (#2007)

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* bip-373: Fix GLOBAL_XPUB key name and clean up compressed vs x-only note

* add requires
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Galoretka 2025-12-09 18:33:04 +02:00 committed by GitHub
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commit 6ce21f4eae
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1 changed files with 3 additions and 3 deletions
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@ -9,6 +9,7 @@
Type: Standards Track Type: Standards Track
Created: 2024-06-04 Created: 2024-06-04
License: CC0-1.0 License: CC0-1.0
Requires: 32, 174, 327, 328, 370
</pre> </pre>
==Introduction== ==Introduction==
@ -52,8 +53,7 @@ The new per-input types are defined as follows:
| rowspan="2"| 0, 2 | rowspan="2"| 0, 2
|- |-
| The MuSig2 aggregate public key (compressed) <ref>'''Why the compressed aggregate public key instead of x-only?''' | The MuSig2 aggregate public key (compressed) <ref>'''Why the compressed aggregate public key instead of x-only?'''
[[bip-0032.mediawiki|BIP 32]] public keys can be derived from a [[bip-0327.mediawiki|BIP 327]] MuSig2 aggregate public key [[bip-0032.mediawiki|BIP 32]] public keys can be derived from a [[bip-0327.mediawiki|BIP 327]] MuSig2 aggregate public key (see: [[bip-0328.mediawiki|BIP 328]]).
(see: [[bip-0328.mediawiki|BIP 328]]).But since BIP 32 requires public keys to include their evenness byte, [[bip-0327.mediawiki|BIP 327]] MuSig2 aggregate public key (see: [[bip-0328.mediawiki|BIP 328]]).
But since BIP 32 requires public keys to include their evenness byte, BIP 327 MuSig2 aggregate public keys must But since BIP 32 requires public keys to include their evenness byte, BIP 327 MuSig2 aggregate public keys must
include their evenness byte as well. Furthermore, PSBT_IN_TAP_BIP32_DERIVATION fields include fingerprints to identify include their evenness byte as well. Furthermore, PSBT_IN_TAP_BIP32_DERIVATION fields include fingerprints to identify
master keys, and these fingerprints require the y-coordinate of the public key, so x-only serialization can't be used. master keys, and these fingerprints require the y-coordinate of the public key, so x-only serialization can't be used.
@ -143,7 +143,7 @@ that public key should contain the aggregate public key rather than the found pu
updater should also add <tt>PSBT_IN_TAP_BIP32_DERIVATION</tt> that contains the derivation path used updater should also add <tt>PSBT_IN_TAP_BIP32_DERIVATION</tt> that contains the derivation path used
to derive the found pubkey from the aggregate pubkey. to derive the found pubkey from the aggregate pubkey.
Derivation from the aggregate pubkey can be assumed to follow [[bip-0328.mediawiki|BIP 328]] Derivation from the aggregate pubkey can be assumed to follow [[bip-0328.mediawiki|BIP 328]]
if there is no <tt>PSBT_IN_GLOBAL_XPUB</tt> that specifies the synthetic xpub for the aggregate if there is no <tt>PSBT_GLOBAL_XPUB</tt> that specifies the synthetic xpub for the aggregate
public key. public key.
Updaters should add <tt>PSBT_OUT_MUSIG2_PARTICIPANT_PUBKEYS</tt> and Updaters should add <tt>PSBT_OUT_MUSIG2_PARTICIPANT_PUBKEYS</tt> and