{
  "created": "2026-10-29",
  "bbox": [
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    20.94,
    106.0,
    21.19
  ],
  "coverage": "Envelope covering inside Ring Road 3 plus a buffer, not an official boundary polygon",
  "osm": {
    "source_url": "https://download.geofabrik.de/asia/vietnam-261027.osm.pbf",
    "timestamp": "2026-10-27T21:23:59Z",
    "pbf_sha256": "43653150123dd2aea72820d4fb6018fd89369c34d4b19f20a6f6cc7620ee3421",
    "license": "ODbL 1.0; © OpenStreetMap contributors / Geofabrik",
    "snapshot": "rr3_osm_snapshot.json.gz",
    "extraction": "Only in-bounds nodes and referenced drivable-road/water ways. Contributor identities removed."
  },
  "population": {
    "source_url": "https://data.worldpop.org/GIS/Population/Global_2000_2020/2020/VNM/vnm_ppp_2020.tif",
    "metadata_url": "https://hub.worldpop.org/geodata/summary?id=6449",
    "doi": "10.5258/SOTON/WP00645",
    "year": 2020,
    "license": "CC BY 4.0; WorldPop/University of Southampton",
    "original_grid": "3 arc seconds, about 100 m",
    "display_grid": "3 × 3 source cells summed, about 300 m",
    "clip": "rr3_worldpop_2020_clip.tif"
  },
  "files": [
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