[#index_util-DBHashKey-2constructor]
= xref:index_util.adoc[index_util]::xref:index_util/DBHashKey.adoc[DBHashKey]::DBHashKey
:relfileprefix: ../../
:mrdocs:

Construct a hash key for the given block hash.

== Synopsis

Declared in `<index/db_key.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
explicit
DBHashKey(xref:uint256.adoc[uint256] const& hash_in);
----

== Parameters

[cols="1,4"]
|===
| Name| Description
| *hash_in*
| Block hash to encode.
|===


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