validate static method
Verify jwt against (qx, qy) and, if valid, decide its status against
the declared origin. INVALID on a bad signature.
Implementation
static WcVerifyStatus validate(
String jwt, {
required BigInt qx,
required BigInt qy,
required String origin,
}) {
if (!verifyJwt(jwt, qx: qx, qy: qy)) return WcVerifyStatus.invalid;
return statusForClaims(decodeClaims(jwt), origin: origin);
}