[#CVerifyDB-VerifyDB]
= xref:CVerifyDB.adoc[CVerifyDB]::VerifyDB
:relfileprefix: ../
:mrdocs:

Verify the consistency of the block and coin databases.

== Synopsis

Declared in `<validation.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
[[nodiscard, requires_capability(0x7f2e1b932720), requires_capability(0x7f2e275ab900), requires_capability(0x7f2e3696cd00), requires_capability(0x7f2e35458f50)]]
xref:VerifyDBResult.adoc[VerifyDBResult]
VerifyDB(
    xref:Chainstate.adoc[Chainstate]& chainstate,
    xref:Consensus/Params.adoc[Consensus::Params] const& consensus_params,
    xref:CCoinsView.adoc[CCoinsView]& coinsview,
    int nCheckLevel,
    int nCheckDepth);
----

== Return Value

The outcome of the verification.

[NOTE]
====
The return value https://en.cppreference.com/cpp/language/attributes/nodiscard[should not be discarded^].
====
== Parameters

[cols="1,4"]
|===
| Name| Description
| *chainstate*
| The chainstate whose databases are verified.
| *consensus_params*
| Consensus parameters used during verification.
| *coinsview*
| The coins view to verify against.
| *nCheckLevel*
| How thorough the checks should be.
| *nCheckDepth*
| How many blocks back from the tip to verify.
|===


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