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

Construct a Taproot tweaked output point with this point as internal key.

== Synopsis

Declared in `<pubkey.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
std::optional<std::pair<XOnlyPubKey, bool>>
CreateTapTweak(xref:uint256.adoc[uint256] const* merkle_root) const;
----

== Return Value

The tweaked output point and its parity, or std::nullopt on failure.

== Parameters

[cols="1,4"]
|===
| Name| Description
| *merkle_root*
| Optional Merkle root of the script tree.
|===


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