{
  "$schema": "https://json-structure.org/draft/2020-12/schema",
  "name": "Source",
  "type": "object",
  "properties": {
    "domain": {
      "type": "string"
    },
    "uri": {
      "type": "string"
    },
    "extracted_on": {
      "type": "string"
    },
    "last_seen_on": {
      "type": "string"
    },
    "still_on_page": {
      "type": "boolean"
    }
  }
}