@type t() :: %AshR2RML.SPARQL.DifferentialReceipt{
  metadata: map(),
  query_sha256: String.t(),
  receipt_sha256: String.t(),
  result_sha256_by_strategy: %{required(atom()) => String.t()},
  row_count_by_strategy: %{required(atom()) => non_neg_integer()},
  strategies: [AshR2RML.SPARQL.Plan.strategy()],
  subject: term(),
  verified?: boolean()
}