[#kernel-ChainstateManagerOpts-check_block_index]
= xref:kernel.adoc[kernel]::xref:kernel/ChainstateManagerOpts.adoc[ChainstateManagerOpts]::check_block_index
:relfileprefix: ../../
:mrdocs:

If set, run the block index sanity check at this frequency.

== Synopsis

Declared in `<kernel/chainstatemanager_opts.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
std::optional<int32_t> check_block_index = {};
----


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