[#XOnlyPubKey-data-09]
= xref:XOnlyPubKey.adoc[XOnlyPubKey]::data
:relfileprefix: ../
:mrdocs:

Mutable pointer to the first byte of the key data&period;

== Synopsis

Declared in `&lt;pubkey&period;h&gt;`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
unsigned char*
data();
----

== Return Value

A mutable pointer to the first byte of the key data&period;


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