(*****************************************************************************)
(*                                                                           *)
(* Open Source License                                                       *)
(* Copyright (c) 2018 Dynamic Ledger Solutions, Inc. <contact@tezos.com>     *)
(*                                                                           *)
(* Permission is hereby granted, free of charge, to any person obtaining a   *)
(* copy of this software and associated documentation files (the "Software"),*)
(* to deal in the Software without restriction, including without limitation *)
(* the rights to use, copy, modify, merge, publish, distribute, sublicense,  *)
(* and/or sell copies of the Software, and to permit persons to whom the     *)
(* Software is furnished to do so, subject to the following conditions:      *)
(*                                                                           *)
(* The above copyright notice and this permission notice shall be included   *)
(* in all copies or substantial portions of the Software.                    *)
(*                                                                           *)
(* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR*)
(* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,  *)
(* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL   *)
(* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER*)
(* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING   *)
(* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER       *)
(* DEALINGS IN THE SOFTWARE.                                                 *)
(*                                                                           *)
(*****************************************************************************)

type t = {
  shell: Block_header.shell_header ;
  protocol_data: protocol_data ;
}

and protocol_data = {
  contents: contents ;
  signature: Signature.t ;
}

and contents = {
  priority: int ;
  seed_nonce_hash: Nonce_hash.t option ;
  proof_of_work_nonce: MBytes.t ;
}

type block_header = t

type raw = Block_header.t
type shell_header = Block_header.shell_header

val raw: block_header -> raw

val encoding: block_header Data_encoding.encoding
val raw_encoding: raw Data_encoding.t
val contents_encoding: contents Data_encoding.t
val unsigned_encoding: (Block_header.shell_header * contents) Data_encoding.t
val protocol_data_encoding: protocol_data Data_encoding.encoding
val shell_header_encoding: shell_header Data_encoding.encoding

val max_header_length: int
(** The maximum size of block headers in bytes *)

val hash: block_header -> Block_hash.t
val hash_raw: raw -> Block_hash.t