{
  "changes": [
    {
      "artifact": "baseline",
      "state": "unchanged"
    },
    {
      "artifact": "digest",
      "state": "unchanged"
    },
    {
      "artifact": "events",
      "state": "unchanged"
    }
  ],
  "date": "2026-08-21",
  "predecessor": "2026-08-20T05-10-01Z",
  "run_id": "2026-08-21T05-10-01Z",
  "schema": "urn:tyche:evidence-surface-observation:1.0:diff"
}