[#CheckBlock]
= CheckBlock
:mrdocs:

Context‐independent validity checks.

== Synopsis

Declared in `<validation.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
bool
CheckBlock(
    xref:CBlock.adoc[CBlock] const& block,
    xref:BlockValidationState.adoc[BlockValidationState]& state,
    xref:Consensus/Params.adoc[Consensus::Params] const& consensusParams,
    bool fCheckPOW = true,
    bool fCheckMerkleRoot = true);
----

== Return Value

true if the block passes the context‐independent checks.

== Parameters

[cols="1,4"]
|===
| Name| Description
| *block*
| The block to check.
| *state*
| Validation state updated with the reason for any failure.
| *consensusParams*
| Consensus parameters to check the block against.
| *fCheckPOW*
| Whether to check the proof of work.
| *fCheckMerkleRoot*
| Whether to check the merkle root.
|===


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