{
  "receipt": "obs-receipt/1.0",
  "id": "telegram-nodenom-001",
  "issued_at": "2026-10-01T09:00:00Z",
  "kind": "direct",
  "layer": "application-service",
  "claims_about": "sample",
  "source": {
    "name": "volunteer probe run",
    "retrieved_at": "2026-10-01T08:55:00Z",
    "hand": "first"
  },
  "window": { "start": "2026-10-01T08:00:00Z", "end": "2026-10-01T08:55:00Z" },
  "geography": { "scope": "province" },
  "measure": { "metric": "anomalous", "numerator": 47, "unit": "measurements" },
  "valid_until": "2026-10-03T00:00:00Z"
}