{
  "lexicon": 1,
  "id": "com.publicdomainrelay.temp.market.heartbeat",
  "description": "A bidder's liveness beat for its offering, rewritten at rkey self.",
  "defs": {
    "main": {
      "type": "record",
      "key": "literal:self",
      "record": {
        "type": "object",
        "required": ["offering", "createdAt"],
        "properties": {
          "offering": { "type": "string", "format": "at-uri", "description": "The market.offering this beat keeps alive." },
          "createdAt": { "type": "string", "format": "datetime" }
        }
      }
    }
  }
}