Signer (lib.Lib.Signer)

module Signature = Mina_base.Signature

module User_command = Mina_base.User_command

module Signed_command = Mina_base.Signed_command

module Keys : sig ... end

val sign : 
  keys:Keys.t ->
  unsigned_transaction_string:string ->
  ( string, Rosetta_lib.Errors.t ) Core_kernel__Result.t

val verify : 
  public_key_hex_bytes:string ->
  signed_transaction_string:string ->
  ( bool, Rosetta_lib.Errors.t ) Core_kernel__Result.t