[#GetWitnessCommitmentIndex]
= GetWitnessCommitmentIndex
:mrdocs:

Compute at which vout of the block's coinbase transaction the witness commitment occurs, or ‐1 if not found

== Synopsis

Declared in `<consensus/validation.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
int
GetWitnessCommitmentIndex(xref:CBlock.adoc[CBlock] const& block);
----

== Return Value

The output index of the witness commitment, or NO_WITNESS_COMMITMENT (‐1) if none is present.

== Parameters

[cols="1,4"]
|===
| Name| Description
| *block*
| The block whose coinbase outputs are scanned.
|===


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