[#node-BlockMap]
= xref:node.adoc[node]::BlockMap
:relfileprefix: ../
:mrdocs:

Map from block hash to its in&hyphen;memory block index entry&period;

== Synopsis

Declared in `&lt;node&sol;blockstorage&period;h&gt;`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
using BlockMap = std::unordered&lowbar;map&lt;uint256, CBlockIndex, BlockHasher&gt;;
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