{
  "id": "palimpsest-news:ooni-gfw",
  "slug": "ooni-great-firewall-index",
  "url": "https://palimpsest.info/news/ooni-great-firewall-index/",
  "signal_id": "ooni-gfw",
  "headline": "OONI Great Firewall index: no current finding",
  "dek": "The source is stale. Palimpsest keeps the availability and evidence record visible without publishing retained values as current news.",
  "section": "network",
  "order": 1,
  "type": "measurement",
  "priority": "lead",
  "status": "stale",
  "published_at": "2026-08-24T02:00:59Z",
  "modified_at": "2026-08-24T02:00:59Z",
  "claim_fingerprint": "sha256:43c4497197f2c28f46200962e6303ca9471b1b648f8d27b1a4df53ade8a04d53",
  "metric": {
    "label": null,
    "value": null,
    "unit": null,
    "denominator": {
      "label": null,
      "value": null
    }
  },
  "claims": [
    {
      "type": "availability",
      "statement": "No current finding is published for OONI Great Firewall index because the source status is stale."
    }
  ],
  "evidence": {
    "url": "https://palimpsest.info/readings/ooni-gfw-latest.json",
    "input": {
      "filename": "ooni-gfw-latest.json",
      "sha256": "90accfb51b97976a774e922f9874ab3af2d4fe9a81b934354dfa714981bf1009",
      "bytes": 7989
    },
    "source_timestamp": "2026-08-24T02:00:59Z"
  },
  "method": {
    "summary": "side-channel: we ingest OONI's already-aggregated open data; gfw_index is anomalous completed measurements divided by all completed measurements; we never probe a censored resource ourselves (vantage-insensitive)",
    "version": 2
  },
  "limitations": [
    "Current finding withheld: freshness deadline has passed",
    "Volunteer-probe coverage is uneven across place, network and test family; anomalies are not all attributable to censorship."
  ],
  "related_signal_ids": [
    "in-path-interference",
    "censored-planet",
    "inside-view",
    "vantage-fusion"
  ]
}