{
  "source": "https://raw.githubusercontent.com/dataofjapan/land/master/japan.geojson",
  "sourceSha256": "b2fa31a9ce37c006904a06b8afcaeaf5ceeff40ae365eca167e09fbfff052f00",
  "originalPublisher": "Geospatial Information Authority of Japan",
  "originalDataset": "Global Map Japan administrative boundaries v2.1 (2015)",
  "convertedBy": "dataofjapan/land",
  "preparedBy": "KJBRIDGE",
  "changes": "JSON minification and 6-decimal coordinate rounding; all polygons/rings/vertices retained; no relocation or insets.",
  "license": "GSI content terms / Public Data License 1.0",
  "licenseUrl": "https://web1.gsi.go.jp/kikakuchousei/kikakuchousei40182.html",
  "sourceUrl": "https://www.gsi.go.jp/kankyochiri/gm_jpn.html",
  "policyReviewedAt": "2026-10-08",
  "boundaryDataYear": 2015,
  "features": 47
}