Legal
Data attribution
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Map data — OpenStreetMap
Trails, lifts, buildings, boundaries, and resort locations in every xyzski model and in our resort catalog are derived from OpenStreetMap, available under the Open Database License (ODbL).
Map data © OpenStreetMap contributors (ODbL)
Every embed renders this notice in its attribution chip, linked to the OpenStreetMap copyright page. It may not be removed on any tier.
Terrain and imagery — United States
US elevation data comes from the USGS 3D Elevation Program (3DEP), a work of the United States Government in the public domain.
Terrain: USGS 3DEP (public domain)
Where a model carries aerial imagery, that imagery is USDA NAIP — also public domain — fetched through USGS The National Map.
Imagery: USDA NAIP (public domain), via USGS The National Map
Terrain — outside the United States
Outside the US our models are built on the Copernicus DEM GLO-30, produced using Copernicus WorldDEM-30.
Terrain: Copernicus DEM GLO-30 © DLR e.V. 2010-2014 and © Airbus Defence and Space GmbH (COPERNICUS 2018-2025)
Mount Everest is the exception. Its terrain is the NASA NSIDC High Mountain Asia 8 m DEM mosaic, built from WorldView and GeoEye stereo imagery, with Copernicus GLO-30 filling the voids.
Terrain: HMA 8 m DEM mosaic v1 (Shean et al. 2020; NASA NSIDC HMA_DEM8m_MOS) from WorldView/GeoEye stereo; voids filled from Copernicus DEM GLO-30 (c) DLR e.V. 2010-2014 / Airbus Defence and Space GmbH
Forest and canopy
Three different products stand behind the trees, so all three are credited. Each is licensed CC BY 4.0.
The forest masks in the embeddable resort models are derived from the ESA WorldCover 2021 product.
Forest: © ESA WorldCover 2021 (CC BY 4.0)
The full mountain worlds place individual trees from a canopy-height model instead. Across the US that model is NAIP-CHM at 0.6 m.
Canopy: NAIP-CHM 0.6 m (Nietupski et al. 2025, CC BY 4.0)
Outside the US it is Meta and WRI's Global Canopy Height v2. The Mount Everest world ends up with no trees at all — at that altitude the product reads snow and ice as canopy, so the layer is zeroed — but the credit stands, because the bake was built against the data.
Canopy: © Meta / WRI Global Canopy Height v2 (CC BY 4.0)
In the product
Each terrain bundle's manifest carries the attribution strings for its own sources, and the viewer renders them automatically. If your integration opts to render attribution itself (the external mode of the JS API), the obligation to display these notices transfers to you.