{
  "version": "arcus-open-2026.11",
  "generated_at": "2026-10-01T07:00:23.163Z",
  "data_cutoff": "2026-04-02",
  "event_count": 261,
  "source_count": 718,
  "taxonomy_version": "hydraulic-v2",
  "schema_version": "arcus-open-schema-v2",
  "license": {
    "id": "CC-BY-NC-4.0",
    "name": "Creative Commons Attribution-NonCommercial 4.0 International",
    "scope": "ARCUS-authored event metadata and taxonomy definitions. Linked third-party sources remain subject to their original rights and terms.",
    "url": "https://creativecommons.org/licenses/by-nc/4.0/"
  },
  "citation": "ARCUS Open Research (arcus-open-2026.11). Bridge collapse events in Italy, 2000-2026. Version arcus-open-2026.11.",
  "changelog": "changelog.json",
  "known_limitations": [
    "The database describes documented historical events and cannot estimate the probability of future collapse.",
    "Source coverage and location precision vary across records.",
    "Needs review is retained as a distinct editorial evidence class.",
    "Third-party source content is not redistributed; links and bibliographic metadata remain subject to provider terms.",
    "Province mismatches are flagged and never silently corrected.",
    "Published shared episodes control record clustering; they do not establish an identical structural failure mechanism across bridges."
  ],
  "source_workbook_fingerprint": "sha256:946ee2189a920832e68014bbf516ae4f285aa9eb45648d010b4fbd09745b9a39",
  "access": "public_read_only_no_account_required",
  "resources": {
    "events": "events.json",
    "sources": "sources.json",
    "taxonomy": "taxonomy.json",
    "data_dictionary": "data-dictionary.json",
    "changelog": "changelog.json",
    "statistics": "statistics.json",
    "quality_audit": "quality-audit.json",
    "id_mapping": "id-mapping.json",
    "csv": "events.csv",
    "geojson": "events.geojson",
    "episodes": "episodes.json"
  },
  "shared_episode_count": 14,
  "shared_episode_event_count": 108
}