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BIP-174: port public key terminology from BIP 373 #2085

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Merged
murchandamus merged 1 commit into from
Feb 28, 2026
Merged

BIP-174: port public key terminology from BIP 373 #2085

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26 changes: 13 additions & 13 deletions bip-0174.mediawiki
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Original file line number Diff line number Diff line change
Expand Up @@ -507,11 +507,11 @@ The currently defined per-input types are defined as follows:
|-
| MuSig2 Participant Public Keys
| <tt>PSBT_IN_MUSIG2_PARTICIPANT_PUBKEYS = 0x1a</tt>
| <33 byte plain aggregate pubkey>
| The MuSig2 aggregate plain public key from the <tt>KeyAgg</tt> algorithm. This key may or may not
| <33 byte aggregate pubkey (compressed)>
| The MuSig2 aggregate public key (compressed) from the <tt>KeyAgg</tt> algorithm. This key may or may not
be in the script directly (as x-only). It may instead be a parent public key from which the public keys in the
script were derived.
| <tt><33 byte compressed pubkey>*</tt>
| <tt><33 byte participant pubkey (compressed)>*</tt>
| A list of the compressed public keys of the participants in the MuSig2 aggregate key in the order
required for aggregation. If sorting was done, then the keys must be in the sorted order.
|
Expand All @@ -521,11 +521,11 @@ required for aggregation. If sorting was done, then the keys must be in the sort
|-
| MuSig2 Public Nonce
| <tt>PSBT_IN_MUSIG2_PUB_NONCE = 0x1b</tt>
| <tt><33 byte compressed pubkey> <33 byte plain pubkey> <32 byte hash or omitted></tt>
| The compressed public key of the participant providing this nonce, followed by the plain public
| <tt><33 byte participant pubkey (compressed)> <33 byte aggregate pubkey (compressed)> <32 byte hash or omitted></tt>
| The compressed public key of the participant providing this nonce, followed by the compressed aggregate public
key the participant is providing the nonce for, followed by the BIP 341 tapleaf hash of
the Taproot leaf script that will be signed. If the aggregate key is the taproot internal key or the
taproot output key, then the tapleaf hash must be omitted. The plain public key must be
taproot output key, then the tapleaf hash must be omitted. The compressed participant public key must be
the key found in the script and not the aggregate public key that it was derived from, if it was
derived from an aggregate key.
| <tt><66 byte public nonce></tt>
Expand All @@ -537,11 +537,11 @@ derived from an aggregate key.
|-
| MuSig2 Participant Partial Signature
| <tt>PSBT_IN_MUSIG2_PARTIAL_SIG = 0x1c</tt>
| <tt><33 byte compressed pubkey> <33 byte plain pubkey> <32 byte hash or omitted></tt>
| <tt><33 byte participant pubkey (compressed)> <33 byte aggregate pubkey (compressed)> <32 byte hash or omitted></tt>
| The compressed public key of the participant providing this partial signature, followed by the
plain public key the participant is providing the signature for, followed by the BIP 341 tapleaf hash
of the Taproot leaf script that will be signed. If the aggregate key is the taproot internal key or
the taproot output key, then the tapleaf hash must be omitted. Note that the plain public key must
compressed public key the participant is providing the signature for, followed by the BIP 341 tapleaf hash
of the Taproot leaf script that will be signed. If the aggregate key is the Taproot internal key or
the Taproot output key, then the tapleaf hash must be omitted. Note that the compressed participant public key must be
be the key found in the script and not the aggregate public key that it was derived from, if it was
derived from an aggregate key.
| <tt><32 byte partial signature></tt>
Expand Down Expand Up @@ -691,11 +691,11 @@ determine which outputs are change outputs and verify that the change is returni
|-
| MuSig2 Participant Public Keys
| <tt>PSBT_OUT_MUSIG2_PARTICIPANT_PUBKEYS = 0x08</tt>
| <33 byte plain aggregate pubkey>
| The MuSig2 aggregate plain public key from the <tt>KeyAgg</tt> algorithm. This key may or may not
| <tt><33 byte aggregate pubkey (compressed)></tt>
| The MuSig2 compressed aggregate public key from the <tt>KeyAgg</tt> algorithm. This key may or may not
be in the script directly. It may instead be a parent public key from which the public keys in the
script were derived.
| <tt><33 byte compressed pubkey>*</tt>
| <tt><33 byte participant pubkey (compressed)>*</tt>
| A list of the compressed public keys of the participants in the MuSig2 aggregate key in the order
required for aggregation. If sorting was done, then the keys must be in the sorted order.
|
Expand Down