[#ChainstateManager-RecalculateBestHeader]
= xref:ChainstateManager.adoc[ChainstateManager]::RecalculateBestHeader
:relfileprefix: ../
:mrdocs:

If, due to invalidation &sol; reconsideration of blocks, the previous best header is no longer valid &sol; guaranteed to be the most&hyphen;work header in our block&hyphen;index not known to be invalid, recalculate it&period;

== Synopsis

Declared in `&lt;validation&period;h&gt;`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
&lsqb;&lsqb;requires&lowbar;capability(0x7f2e1bc182e8), requires&lowbar;capability(0x7f2e146b6638), requires&lowbar;capability(0x7f2e298fba08), requires&lowbar;capability(0x7f2e360b9168)&rsqb;&rsqb;
void
RecalculateBestHeader();
----


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