[#XOnlyPubKey-VerifySchnorr]
= xref:XOnlyPubKey.adoc[XOnlyPubKey]::VerifySchnorr
:relfileprefix: ../
:mrdocs:

Verify a Schnorr signature against this public key.

== Synopsis

Declared in `<pubkey.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
bool
VerifySchnorr(
    xref:uint256.adoc[uint256] const& msg,
    std::span<unsigned char const> sigbytes) const;
----

== Description

sigbytes must be exactly 64 bytes.

== Return Value

true if the signature is valid for this public key.

== Parameters

[cols="1,4"]
|===
| Name| Description
| *msg*
| The 32‐byte message hash that was signed.
| *sigbytes*
| The 64‐byte Schnorr signature to verify.
|===


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