NewCosignVerifier initializes a new CosignVerifier.

WithIdentities specifies the identity matchers that have to be met for the signature to be deemed valid.

WithPublicKey sets the public key.

WithRemoteOptions is a functional option for overriding the default remote options used by the verifier.

CosignVerifier is a struct which is responsible for executing verification logic.

Options is a function that configures the options applied to a Verifier.