[
  {
    "file": "assets/ogaki-castle-public-domain.jpg",
    "title": "Ogaki Castle.jpg",
    "subject": "Ogaki Castle in Ogaki, Gifu, Japan",
    "sourcePage": "https://en.wikipedia.org/wiki/File:Ogaki_Castle.jpg",
    "originalFile": "https://upload.wikimedia.org/wikipedia/commons/6/6b/Ogaki_Castle.jpg",
    "sourceRepository": "Wikimedia Commons",
    "author": "大野 一将",
    "license": "Public domain",
    "licenseEvidence": "The Wikimedia file page states that the author released the work into the public domain and grants use for any purpose.",
    "retrievedAt": "2026-06-11",
    "usageNote": "Used as a rights-safe visual signal still for the fictional lobby directory."
  }
]