{
  "added": [
    {
      "asset_kind": "lens",
      "asset_name": "Cape Byron Lighthouse",
      "evidence_note": "Prepared from the public Chance Heritage Trust Lighthouse Mapping Project map endpoint. Minimum imported information only; no images imported.",
      "import_batch_id": "chance-heritage-trust-lighthouse-map",
      "latitude": "-28.63806",
      "lighthouse_name": "Cape Byron Lighthouse",
      "longitude": "153.63611",
      "manufacturer": "Chance Brothers",
      "notes": "Review and match against LUX Lights canonical lighthouse records before accepting.",
      "site_name": "Cape Byron Lighthouse",
      "source_id": "chanceht:lighthouse:cape-byron-lighthouse",
      "source_title": "Cape Byron Lighthouse",
      "source_url": "https://chanceht.org/lighthouse/cape-byron-lighthouse/"
    },
    {
      "asset_kind": "lens",
      "asset_name": "Cape du Couédic Lighthouse",
      "evidence_note": "Prepared from the public Chance Heritage Trust Lighthouse Mapping Project map endpoint. Minimum imported information only; no images imported.",
      "import_batch_id": "chance-heritage-trust-lighthouse-map",
      "latitude": "-36.058",
      "lighthouse_name": "Cape du Couédic Lighthouse",
      "longitude": "136.7054",
      "manufacturer": "Chance Brothers",
      "notes": "Review and match against LUX Lights canonical lighthouse records before accepting.",
      "site_name": "Cape du Couédic Lighthouse",
      "source_id": "chanceht:lighthouse:cape-du-couedic-lighthouse",
      "source_title": "Cape du Couédic Lighthouse",
      "source_url": "https://chanceht.org/lighthouse/cape-du-couedic-lighthouse/"
    },
    {
      "asset_kind": "lens",
      "asset_name": "Casquets Lighthouse",
      "evidence_note": "Prepared from the public Chance Heritage Trust Lighthouse Mapping Project map endpoint. Minimum imported information only; no images imported.",
      "import_batch_id": "chance-heritage-trust-lighthouse-map",
      "latitude": "49.7173",
      "lighthouse_name": "Casquets Lighthouse",
      "longitude": "-2.3678",
      "manufacturer": "Chance Brothers",
      "notes": "Review and match against LUX Lights canonical lighthouse records before accepting.",
      "site_name": "Casquets Lighthouse",
      "source_id": "chanceht:lighthouse:casquets-lighthouse",
      "source_title": "Casquets Lighthouse",
      "source_url": "https://chanceht.org/lighthouse/casquets-lighthouse/"
    },
    {
      "asset_kind": "lens",
      "asset_name": "Estevan Point Lighthouse",
      "evidence_note": "Prepared from the public Chance Heritage Trust Lighthouse Mapping Project map endpoint. Minimum imported information only; no images imported.",
      "import_batch_id": "chance-heritage-trust-lighthouse-map",
      "latitude": "49.382972",
      "lighthouse_name": "Estevan Point Lighthouse",
      "longitude": "-126.544028",
      "manufacturer": "Chance Brothers",
      "notes": "Review and match against LUX Lights canonical lighthouse records before accepting.",
      "site_name": "Estevan Point Lighthouse",
      "source_id": "chanceht:lighthouse:estevan-point-lighthouse",
      "source_title": "Estevan Point Lighthouse",
      "source_url": "https://chanceht.org/lighthouse/estevan-point-lighthouse/"
    },
    {
      "asset_kind": "lens",
      "asset_name": "Mew Island Lighthouse",
      "evidence_note": "Prepared from the public Chance Heritage Trust Lighthouse Mapping Project map endpoint. Minimum imported information only; no images imported.",
      "import_batch_id": "chance-heritage-trust-lighthouse-map",
      "latitude": "54.69872",
      "lighthouse_name": "Mew Island Lighthouse",
      "longitude": "-5.51373",
      "manufacturer": "Chance Brothers",
      "notes": "Review and match against LUX Lights canonical lighthouse records before accepting.",
      "site_name": "Mew Island Lighthouse",
      "source_id": "chanceht:lighthouse:mew-island-lighthouse",
      "source_title": "Mew Island Lighthouse",
      "source_url": "https://chanceht.org/lighthouse/mew-island-lighthouse/"
    },
    {
      "asset_kind": "lens",
      "asset_name": "Norah Head Lighthouse",
      "evidence_note": "Prepared from the public Chance Heritage Trust Lighthouse Mapping Project map endpoint. Minimum imported information only; no images imported.",
      "import_batch_id": "chance-heritage-trust-lighthouse-map",
      "latitude": "-33.2817",
      "lighthouse_name": "Norah Head Lighthouse",
      "longitude": "151.5783",
      "manufacturer": "Chance Brothers",
      "notes": "Review and match against LUX Lights canonical lighthouse records before accepting.",
      "site_name": "Norah Head Lighthouse",
      "source_id": "chanceht:lighthouse:norah-head-lighthouse",
      "source_title": "Norah Head Lighthouse",
      "source_url": "https://chanceht.org/lighthouse/norah-head-lighthouse/"
    },
    {
      "asset_kind": "lens",
      "asset_name": "Souter Lighthouse",
      "evidence_note": "Prepared from the public Chance Heritage Trust Lighthouse Mapping Project map endpoint. Minimum imported information only; no images imported.",
      "import_batch_id": "chance-heritage-trust-lighthouse-map",
      "latitude": "54.9709",
      "lighthouse_name": "Souter Lighthouse",
      "longitude": "-1.3635",
      "manufacturer": "Chance Brothers",
      "notes": "Review and match against LUX Lights canonical lighthouse records before accepting.",
      "site_name": "Souter Lighthouse",
      "source_id": "chanceht:lighthouse:souter-lighthouse",
      "source_title": "Souter Lighthouse",
      "source_url": "https://chanceht.org/lighthouse/souter-lighthouse/"
    },
    {
      "asset_kind": "lens",
      "asset_name": "St Bees Lighthouse",
      "evidence_note": "Prepared from the public Chance Heritage Trust Lighthouse Mapping Project map endpoint. Minimum imported information only; no images imported.",
      "import_batch_id": "chance-heritage-trust-lighthouse-map",
      "latitude": "54.513644",
      "lighthouse_name": "St Bees Lighthouse",
      "longitude": "-3.636739",
      "manufacturer": "Chance Brothers",
      "notes": "Review and match against LUX Lights canonical lighthouse records before accepting.",
      "site_name": "St Bees Lighthouse",
      "source_id": "chanceht:lighthouse:st-bees-lighthouse",
      "source_title": "St Bees Lighthouse",
      "source_url": "https://chanceht.org/lighthouse/st-bees-lighthouse/"
    },
    {
      "asset_kind": "lens",
      "asset_name": "Withernsea Lighthouse",
      "evidence_note": "Prepared from the public Chance Heritage Trust Lighthouse Mapping Project map endpoint. Minimum imported information only; no images imported.",
      "import_batch_id": "chance-heritage-trust-lighthouse-map",
      "latitude": "53.730953",
      "lighthouse_name": "Withernsea Lighthouse",
      "longitude": "0.028751",
      "manufacturer": "Chance Brothers",
      "notes": "Review and match against LUX Lights canonical lighthouse records before accepting.",
      "site_name": "Withernsea Lighthouse",
      "source_id": "chanceht:lighthouse:withernsea-lighthouse",
      "source_title": "Withernsea Lighthouse",
      "source_url": "https://chanceht.org/lighthouse/withernsea-lighthouse/"
    }
  ],
  "changed": [],
  "current_snapshot_id": "cht-lighthouse-map-2026-08-10-8e34b4c6e5ab",
  "description": "Map-level delta between two Chance Heritage Trust lighthouse-map extractions. Review-only; not an automatic import source.",
  "generated_at": "2026-08-10T15:06:52+00:00",
  "previous_snapshot_id": "cht-lighthouse-map-2026-06-13-ede43c0e6538",
  "removed": [],
  "schema_version": 1,
  "summary": {
    "added": 9,
    "changed": 0,
    "current_count": 580,
    "previous_count": 571,
    "removed": 0,
    "unchanged": 571
  }
}