BasePC.Public_parametersval prover_t : prover Repr.tval verifier_t : verifier Repr.ttype commitment = Commitment.public_parametersval setup : 
  setup_params ->
  (Kzg.Bls.Srs.t * Kzg.Bls.Srs.t) ->
  prover * verifier * Kzg.Utils.Transcript.tval get_commit_parameters : prover -> commitment