Metro Cebu map — provenance and reuse
====================================

File: metro-cebu-20260906.pmtiles
Size: 8,249,883 bytes (1,630 tiles; PMTiles version 3; gzip-compressed MVT)
SHA-256: e9090dcf05a1a71fae1f1a2cc7394eb26a37d182a7620fa4106122fa220b3f29

Regional coverage: longitude 123.74–124.08, latitude 10.14–10.51.
Approximately 37 km east–west by 41 km north–south, covering Cebu City,
Mandaue, Talisay, Lapu-Lapu/Mactan and Mactan-Cebu International Airport.
Contains zoom levels 0–15; a browser may overzoom the highest-detail tiles.
The bounding box selects whole intersecting tiles; lower zoom tiles include
surrounding geographic context beyond the stated high-detail coverage.

Source: Protomaps Basemap version 4.15.2, daily build 2026-09-06.
Downloaded from https://build.protomaps.com/20260906.pmtiles
Source OpenStreetMap replication timestamp: 2026-09-06T04:00:00Z.
Published build index: https://maps.protomaps.com/builds/
Source documentation: https://docs.protomaps.com/basemaps/downloads
Layer schema: https://docs.protomaps.com/basemaps/layers

Software notices: https://cebuproperty.org/maps/map-software-licenses.txt

License and attribution
-----------------------
Protomaps distributes this basemap as an Open Database License Produced Work.
Underlying OpenStreetMap data is available under ODbL 1.0:
https://opendatacommons.org/licenses/odbl/1-0/
OpenStreetMap attribution and copyright information:
https://www.openstreetmap.org/copyright

Display visible credit alongside the browsable map:
“© OpenStreetMap contributors” linked to the OpenStreetMap copyright page.
Protomaps may additionally be credited: https://protomaps.com/
Natural Earth data used in the basemap is public domain:
https://www.naturalearthdata.com/about/terms-of-use/

No Google map imagery or public OpenStreetMap raster tiles are included.
Only the geographic tile subset and descriptive metadata were changed.
These tiles are hosted by cebuproperty.org; viewers need no external map API.

Verification and refresh
------------------------
Created using HTTP byte-range extraction from the official PMTiles archive,
with the Python pmtiles 3.7.0 package obtained from PyPI (source package
SHA-256 ed8b04d550d104c81a759c9cc07bfc5743750f62e751f840425f4b9f4bb903df).
Every extracted tile was read back and compared byte-for-byte with its
source payload; all gzip payloads were decompressed successfully.
The process downloaded approximately 9.7 MB, not the full planet archive.

The official PMTiles CLI can recreate equivalent regional coverage:
  pmtiles extract https://build.protomaps.com/20260906.pmtiles \
    metro-cebu-20260906.pmtiles \
    --bbox=123.74,10.14,124.08,10.51 --maxzoom=15

Daily source files have limited retention. For a later refresh, choose a
current version-compatible daily build from the published index, use a
new date-stamped output filename, record its data timestamp and checksum,
and visually verify the map and attribution before publishing.
CLI documentation: https://docs.protomaps.com/pmtiles/cli