{
  "schema": "spacetime.real-terrain-grid/v1",
  "dataset_id": "ojai-ca33-usgs3dep-export-20261020",
  "synthetic": false,
  "binary_file": "ojai-ca33-dem.f32",
  "dtype": "float32",
  "endianness": "little",
  "layout": "row-major",
  "width": 512,
  "height": 512,
  "row_direction": "north_to_south",
  "bounds": {
    "xmin": 287085.8547033373,
    "ymin": 3812110.209772141,
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    "ymax": 3820019.0521562323
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  "horizontal_crs": "EPSG:26911",
  "horizontal_datum": "NAD83",
  "horizontal_units": "m",
  "vertical_datum": "NAVD88",
  "vertical_units": "m",
  "vertical_datum_qualification": "All non-overview source catalog records intersecting requested AOI declare NAVD88; export contributors not locked per pixel.",
  "geotransform": [
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    0,
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  "geotransform_convention": "GDAL corner transform: X=GT0+(column+0.5)*GT1+(row+0.5)*GT2; Y=GT3+(column+0.5)*GT4+(row+0.5)*GT5 for pixel centers.",
  "nodata": null,
  "finite_fraction": 1.0,
  "export_sample_spacing_m": 15.446957781427955,
  "not_native_resolution": true,
  "source": {
    "provider": "USGS 3D Elevation Program",
    "service_url": "https://elevation.nationalmap.gov/arcgis/rest/services/3DEPElevation/ImageServer",
    "request_url": "https://elevation.nationalmap.gov/arcgis/rest/services/3DEPElevation/ImageServer/exportImage?bbox=-119.31%2C34.43%2C-119.24%2C34.50&bboxSR=4326&imageSR=26911&size=512%2C512&format=tiff&pixelType=F32&interpolation=RSP_BilinearInterpolation&renderingRule=%7B%22rasterFunction%22%3A%22None%22%7D&f=json",
    "source_export_url": "https://elevation.nationalmap.gov/arcgis/rest/directories/elevation_output/3DEPElevation_ImageServer/_ags_df5d482f_0651_456d_89df_ce83c8218b1a.tif",
    "source_tiff_sha256": "b7c5c094915a628b74c1a0d72fcd612c6458b45f233256e849691c636ec61fcb",
    "source_tiff_bytes": 1049864,
    "retrieved_at_utc": "2026-10-20T19:27:37.644758+00:00",
    "service_data_published_through": "2026-09-28",
    "service_copyright_date": "2026-10-01",
    "capture_date": null,
    "capture_date_qualification": "Dynamic multi-resolution mosaic; no single acquisition date established for export. Intersecting 1m project catalog acquisition is 2018-07-22; coarser sources list 2023-10-13. Retrieval/publication dates are not capture dates.",
    "license": "USGS 3DEP: public domain, free of charge and without use restrictions",
    "license_source": "https://www.usgs.gov/3d-elevation-program/about-3dep-products-services",
    "reproduction_request_qualification": "Initial request contained a leading plus in interpolation; corrected token request was downloaded and verified byte-identical to retained GeoTIFF."
  },
  "derived_sha256": "996a01f14f93cc2d27a9e3386c5cef4558a27d3be68ffa1023ff08900714c0d1",
  "derived_bytes": 1048576,
  "qualification": "Real terrain raster, not surveyed ground truth or navigation-certified environment."
}