@type t() :: %AshR2RML.ParityReceipt{
  fixture_sha256: String.t() | nil,
  kind: :sparql_sql | :neo4j_postgres,
  left_count: non_neg_integer(),
  left_query_sha256: String.t() | nil,
  left_result_sha256: String.t(),
  left_system: atom() | String.t(),
  mapping_sha256: String.t() | nil,
  metadata: map(),
  receipt_sha256: String.t(),
  right_count: non_neg_integer(),
  right_query_sha256: String.t() | nil,
  right_result_sha256: String.t(),
  right_system: atom() | String.t(),
  subject: term(),
  verified?: boolean()
}