{
  "sample_type": "synthetic",
  "records": [
    {
      "source_url": "https://example.com/retrieval-guide",
      "retrieved_at": "2026-09-17T10:00:00Z",
      "text": "Synthetic guidance: keep retrieval time separate from page publication time.",
      "content_hash": "sha256:b6386f800e0d671f16feecb72d366f00a7d9fe52e6325f14389f5736bbfc31eb",
      "fetch_status": "fetched",
      "published_at": "2026-08-01"
    },
    {
      "source_url": "https://example.org/agent-notes",
      "retrieved_at": "2026-09-17T10:05:00Z",
      "text": "",
      "content_hash": "",
      "fetch_status": "failed",
      "failure_reason": "synthetic timeout"
    }
  ]
}