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

Determine if this pubkey is fully valid. This is true for approximately 50% of all possible 32‐byte arrays. If false, VerifySchnorr, CheckTapTweak and CreateTapTweak will always fail.

== Synopsis

Declared in `<pubkey.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
bool
IsFullyValid() const;
----

== Return Value

true if this is a fully valid x‐only public key.


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