[#CBlockHeaderAndShortTxIDs-GetShortID]
= xref:CBlockHeaderAndShortTxIDs.adoc[CBlockHeaderAndShortTxIDs]::GetShortID
:relfileprefix: ../
:mrdocs:

Computes the short ID for a transaction from its witness hash.

== Synopsis

Declared in `<blockencodings.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
uint64_t
GetShortID(xref:Wtxid.adoc[Wtxid] const& wtxid) const;
----

== Return Value

The truncated short transaction id.

== Parameters

[cols="1,4"]
|===
| Name| Description
| *wtxid*
| The witness transaction id to hash.
|===


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