[#BaseSignatureChecker-CheckECDSASignature]
= xref:BaseSignatureChecker.adoc[BaseSignatureChecker]::CheckECDSASignature
:relfileprefix: ../
:mrdocs:

Verify an ECDSA signature against a public key and script code.

== Synopsis

Declared in `<script/interpreter.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
virtual
bool
CheckECDSASignature(
    std::vector<unsigned char> const& scriptSig,
    std::vector<unsigned char> const& vchPubKey,
    xref:CScript.adoc[CScript] const& scriptCode,
    xref:SigVersion.adoc[SigVersion] sigversion) const;
----

== Return Value

`true` if the signature is valid.

== Parameters

[cols="1,4"]
|===
| Name| Description
| *scriptSig*
| The serialized signature, including its sighash byte.
| *vchPubKey*
| The serialized public key.
| *scriptCode*
| The script code committed to by the signature.
| *sigversion*
| The signature version selecting the hashing scheme.
|===


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