[#kernel-ChainstateManagerOpts-assumed_valid_block]
= xref:kernel.adoc[kernel]::xref:kernel/ChainstateManagerOpts.adoc[ChainstateManagerOpts]::assumed&lowbar;valid&lowbar;block
:relfileprefix: ../../
:mrdocs:

If set, it will override the block hash whose ancestors we will assume to have valid scripts without checking them&period;

== Synopsis

Declared in `&lt;kernel&sol;chainstatemanager&lowbar;opts&period;h&gt;`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
std::optional&lt;uint256&gt; assumed&lowbar;valid&lowbar;block = &lcub;&rcub;;
----


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