[#BaseSignatureCreator-CreateMuSig2AggregateSig]
= xref:BaseSignatureCreator.adoc[BaseSignatureCreator]::CreateMuSig2AggregateSig
:relfileprefix: ../
:mrdocs:

Aggregate MuSig2 partial signatures into a final signature.

== Synopsis

Declared in `<script/sign.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
virtual
bool
CreateMuSig2AggregateSig(
    std::vector<CPubKey> const& participants,
    std::vector<uint8_t>& sig,
    xref:CPubKey.adoc[CPubKey] const& aggregate_pubkey,
    xref:CPubKey.adoc[CPubKey] const& script_pubkey,
    xref:uint256.adoc[uint256] const* leaf_hash,
    std::vector<std::pair<uint256, bool>> const& tweaks,
    xref:SigVersion.adoc[SigVersion] sigversion,
    xref:SignatureData.adoc[SignatureData] const& sigdata) const = 0;
----

== Return Value

True if the aggregate signature was created.

== Parameters

[cols="1,4"]
|===
| Name| Description
| *participants*
| The participant public keys contributing signatures.
| *sig*
| Filled with the produced aggregate signature.
| *aggregate_pubkey*
| The aggregate public key of the MuSig2 group.
| *script_pubkey*
| The output key the aggregate key is tweaked to.
| *leaf_hash*
| The tapleaf hash for a script path spend, or null.
| *tweaks*
| The tweaks applied to the aggregate key, with parity flags.
| *sigversion*
| The signature serialization version to use.
| *sigdata*
| Signature data providing context for the input.
|===


[.small]#Created with https://www.mrdocs.com[MrDocs]#