Prec.rok: def of bend-collections-laws-crypto@1.0.0.0
Import: import bend-collections-laws-crypto@1.0.0.0/proofs/crypto/secp256k1/prec.bend as Prec
Lines 199-208 of bend-collections-laws-crypto@1.0.0.0/proofs/crypto/secp256k1/prec.bend: https://jend.leeeet.dev/read.txt?path=bend-collections-laws-crypto@1.0.0.0/proofs/crypto/secp256k1/prec.bend&start_line=199&end_line=208

import Base
import bend-collections-laws-crypto@1.0.0.0/spec/crypto/secp256k1/field.bend as FS
import bend-collections-laws-crypto@1.0.0.0/spec/crypto/secp256k1/ecdsa.bend as ES
import bend-collections-laws-crypto@1.0.0.0/src/crypto/secp256k1/ecdsa.bend as E
import bend-collections-laws-crypto@1.0.0.0/proofs/crypto/secp256k1/pver.bend as PV

def rok(+one: Nat, +h1: {one == 1n : Nat}, +z: List<&2, Nat>, +hz: {FS.reduced(one, FS.order(one), z) == True{} : Bool}, +r: List<&2, Nat>, +hlr: {FS.limbs16(one, 16n, r) == True{} : Bool}, +s: List<&2, Nat>, +hls: {FS.limbs16(one, 16n, s) == True{} : Bool}, +id: Nat, a: Bool, b: Bool, c: Bool, +ha: {ES.scalar_ok(one, FS.value(one, r)) == a : Bool}, +hb: {ES.scalar_ok(one, FS.value(one, s)) == b : Bool}, +hc: {Nat.is_lt(id, 4n) == c : Bool}) -> {E.recover_ok(z, r, s, id, Bool.and(Bool.and(a, b), c)) == ES.recover_ok(one, FS.value(one, z), FS.value(one, r), FS.value(one, s), id, Bool.and(Bool.and(a, b), c)) : Maybe<&2, List<&2, U32>>}:
  match a b c:
    case True{} True{} True{}:
      rid(one, h1, z, hz, r, PV.ok_red(one, r, hlr, ha), s, PV.ok_red(one, s, hls, hb), id, hc)
    case True{} True{} False{}:
      {==}
    case True{} False{} _:
      {==}
    case False{} _ _:
      {==}

Uses (16):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Bool
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Bool.and
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=List
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Maybe
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Nat
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Nat.is_lt
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=U32
  https://jend.leeeet.dev/definition.txt?path=bend-collections-laws-crypto@1.0.0.0/proofs/crypto/secp256k1/prec.bend&name=rid
  https://jend.leeeet.dev/definition.txt?path=bend-collections-laws-crypto@1.0.0.0/proofs/crypto/secp256k1/pver.bend&name=ok_red
  https://jend.leeeet.dev/definition.txt?path=bend-collections-laws-crypto@1.0.0.0/spec/crypto/secp256k1/ecdsa.bend&name=recover_ok
  https://jend.leeeet.dev/definition.txt?path=bend-collections-laws-crypto@1.0.0.0/spec/crypto/secp256k1/ecdsa.bend&name=scalar_ok
  https://jend.leeeet.dev/definition.txt?path=bend-collections-laws-crypto@1.0.0.0/spec/crypto/secp256k1/field.bend&name=limbs16
  https://jend.leeeet.dev/definition.txt?path=bend-collections-laws-crypto@1.0.0.0/spec/crypto/secp256k1/field.bend&name=order
  https://jend.leeeet.dev/definition.txt?path=bend-collections-laws-crypto@1.0.0.0/spec/crypto/secp256k1/field.bend&name=reduced
  https://jend.leeeet.dev/definition.txt?path=bend-collections-laws-crypto@1.0.0.0/spec/crypto/secp256k1/field.bend&name=value
  https://jend.leeeet.dev/definition.txt?path=bend-collections-laws-crypto@1.0.0.0/src/crypto/secp256k1/ecdsa.bend&name=recover_ok