type ResearchObjectVersion @entity {
  id: ID!
  time: BigInt!
  cid: String!
  from: String!
  researchObject: ResearchObject!
}

type ResearchObject @entity {
  id: ID!
  id64: String!
  id10: String!
  owner: String!
  recentCid: String!
  versions: [ResearchObjectVersion!]! @derivedFrom(field: "researchObject")
}