def sign_h
import bend-collections-laws-crypto@1.0.0.0/src/crypto/secp256k1/ecdsa.bend as Ecdsaimport Base
149def sign_h(+sk: List<&2, U32>, +h: List<&2, U32>, ok: Bool) -> Maybe<&2, Signature>:
150 match ok:
151 case True{}: sign_d(h, secret(sk))
152 case False{}: None{}