def eth_if
import bend-collections@1.0.0.0/src/crypto/secp256k1/ecdsa.bend as Ecdsaimport Base
import bend-collections@1.0.0.0/src/crypto/secp256k1/bytes.bend as B
318def eth_if(ok: Bool, +dg: List<&2, U32>) -> Maybe<&2, List<&2, U32>>:
319 match ok:
320 case True{}: Some{B.suffix(12n, dg)}
321 case False{}: None{}