type t

val get_sm_key : t -> Signkey.t
val get_denoms : t -> Denomination.t list

val add_master_signatures :
  (module Pg.CONN) ->
  t ->
  (Bin_type.DenominationHash.t * Bin_sig.DenominationKeyValidityPS.t) list ->
  (unit, string) result

val init : (module Pg.CONN) -> t