{
  "updated": "2026-07-24",
  "purpose": "Claim-level sources for the Mayon educational visualization. This registry does not provide live monitoring or public-safety instructions.",
  "sources": [
    {"id":"phivolcs-hazards","title":"PHIVOLCS Volcano Hazard Maps - Mayon","url":"https://volcanohazardmaps.org/map/?id=1047","use":"Official hazard-map context and public-safety boundary.","type":"official","checked":"2026-07-24"},
    {"id":"gvp-mayon","title":"Smithsonian Global Volcanism Program - Mayon","url":"https://volcano.si.edu/volcano.cfm?vn=273030","use":"Volcano reference record and eruption-history context.","type":"reference","checked":"2026-07-24"},
    {"id":"petrology-2021","title":"Bulletin of Volcanology (2021): petrological constraints at Mayon","url":"https://doi.org/10.1007/s00445-021-01486-9","use":"Context for the explicitly inferred, conceptual interior explainer.","type":"peer-reviewed","checked":"2026-07-24"},
    {"id":"srtm","title":"NASA SRTM via AWS Terrain Tiles","url":"https://registry.opendata.aws/terrain-tiles/","use":"Terrain elevation source for the 52 km local DEM.","type":"data","checked":"2026-07-24"},
    {"id":"esri-imagery","title":"Esri World Imagery","url":"https://www.arcgis.com/home/item.html?id=10df2279f9684e4a9f6a7f08febac2a9","use":"Satellite imagery drape, rendered locally in the experience.","type":"data","checked":"2026-07-24"}
  ]
}