public bool Verify(uint256 hash, SchnorrSignature sig)
{
if (sig == null)
{
throw new ArgumentNullException(nameof(sig));
}
if (hash == null)
{
throw new ArgumentNullException(nameof(hash));
}
#if HAS_SPAN
Span <byte> msg = stackalloc byte[32];
hash.ToBytes(msg);
return(ECKey.SigVerify(sig.secpShnorr, msg));
#else
SchnorrSigner signer = new SchnorrSigner();
return(signer.Verify(hash, this, sig));
#endif
}