[#btck_ValidationInterfaceCallbacks-pow_valid_block]
= xref:btck_ValidationInterfaceCallbacks.adoc[btck&lowbar;ValidationInterfaceCallbacks]::pow&lowbar;valid&lowbar;block
:relfileprefix: ../
:mrdocs:

Called when a new block extends the header chain and has a valid transaction and segwit merkle root&period;

== Synopsis

Declared in `&lt;kernel&sol;bitcoinkernel&period;h&gt;`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
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xref:btck_ValidationInterfacePoWValidBlock.adoc[btck&lowbar;ValidationInterfacePoWValidBlock] pow&lowbar;valid&lowbar;block;
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