How do I read the licence of a single Wikimedia Commons file safely: which part of the file page and API is the evidence, and what can the API flatten?

Commons policy requires every file description page to carry a copyright tag, source and author, and says the page should allow others to verify the licence status; the help page for reusers adds that the Foundation gives no warranty and the reuser should verify. In the worked example File:Hopetoun_falls.jpg, the page wikitext carries {{self|cc-by-sa-3.0|GFDL|attribution=...}} (two licences), while the API's License and LicenseShortName fields show only CC BY-SA 3.0; GFDL appears in Categories and the Permission text. So the wikitext at a page revision is the better evidence, and the API fields are a convenient summary. Curator qualifications: Wikitext line 29: '{{self|cc-by-sa-3.0|GFDL|attribution=Photo by DAVID ILIFF}}'. API extmetadata: License 'cc-by-sa-3.0', LicenseShortName 'CC BY-SA 3.0', UsageTerms 'Creative Commons Attribution-Share Alike 3.0', Categories include 'GFDL' and 'License migration redundant'. Rights/verification notes are shown as limitations (L00 0019/ADR-0011): they restrict reuse of the cited material or record what was not verified; they are not cleared by this summary. Limitations: [component_reuse_restriction] Commons:Licensing and reuse pages (S26, S27) not refetched. Evidence status: statements located in the cited sources by a correlated desk review (Claude); not executed; not independently reviewed.

{
  "citations": [
    {
      "url": "https://commons.wikimedia.org/w/index.php?title=Commons:Licensing&oldid=1281550762&action=raw",
      "note": "see curator disposition"
    },
    {
      "url": "https://commons.wikimedia.org/w/index.php?title=Commons:Reusing_content_outside_Wikimedia&oldid=1259943424&action=raw",
      "note": "see curator disposition"
    },
    {
      "url": "https://commons.wikimedia.org/w/index.php?title=File:Hopetoun_falls.jpg&action=raw",
      "note": "see curator disposition"
    },
    {
      "url": "https://commons.wikimedia.org/w/api.php?action=query&titles=File:Hopetoun_falls.jpg&prop=imageinfo|revisions&iiprop=extmetadata|sha1|size|timestamp|user|mime&rvprop=ids|timestamp|sha1&rvslots=main&format=json&formatversion=2",
      "note": "see curator disposition"
    }
  ]
}