[#ComputeTaprootMerkleRoot]
= ComputeTaprootMerkleRoot
:mrdocs:

Compute the BIP341 taproot script tree Merkle root from control block and leaf hash. Requires control block to have valid length (33 + k*32, with k in {0,1,..,128}).

== Synopsis

Declared in `<script/interpreter.h>`

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

== Return Value

The Merkle root of the script tree.

== Parameters

[cols="1,4"]
|===
| Name| Description
| *control*
| The Taproot control block containing the Merkle branch.
| *tapleaf_hash*
| The hash of the leaf being spent.
|===


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