{
  "correction": {
    "correction_id": "demo-correct-duration-001",
    "target_type": "post",
    "target_id": "demo-series-ep01",
    "recorded_at": "2026-08-13T09:00:00+08:00",
    "changes": {
      "duration_seconds": 91
    },
    "reason": "Source media inspection confirmed the exact duration."
  }
}