@type named_addresses() :: %{optional(String.t()) => <<_::160>>}

@type t() :: %Cartouche.RPC.Configuration.Fork{
  activation_time: non_neg_integer() | nil,
  blob_schedule: Cartouche.RPC.Configuration.BlobSchedule.t() | nil,
  chain_id: non_neg_integer() | nil,
  fork_id: <<_::32>> | nil,
  precompiles: named_addresses() | nil,
  system_contracts: named_addresses() | nil
}