[#txindex-02-DBKey-hash_prefix]
= xref:txindex-02.adoc[txindex]::xref:txindex-02/DBKey.adoc[DBKey]::hash_prefix
:relfileprefix: ../../
:mrdocs:

Truncated hash of the transaction id.

== Synopsis

Declared in `<index/txindex_key.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
xref:txindex-02/TxHashKeyPrefix.adoc[TxHashKeyPrefix] hash_prefix = {0};
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