{
  "schema_version": "1.0",
  "asset": "Public GIS source acquisition evidence",
  "version": "2026-10-24",
  "license": "CC-BY-4.0",
  "license_scope": "Original compiled observations and annotations only. Source datasets, software and documentation retain their own terms. No source datasets are redistributed.",
  "generated_utc": "2026-10-25T00:10:17.057227+00:00",
  "observed_date_local": "2026-10-24",
  "timezone": "America/Denver",
  "row_count": 20,
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    "attribution_requirement",
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    "licence_scope",
    "acquisition_caveat"
  ],
  "method_summary": "Twenty fixed-roster families; independently compiled current primary-document observations. Source metadata is not a successful download, uptime or legal-clearance test.",
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      "account_requirement": "Public download links displayed",
      "price_model": "Free",
      "update_pattern": "Not established in inspected sources",
      "version_selection": "Versioned release information",
      "metadata_availability": "Per-layer descriptions",
      "join_identifiers": "Not established in inspected sources",
      "personal_field_redaction": "Not established in inspected sources",
      "attribution_requirement": "Credit optional; encouraged",
      "commercial_use": "Permitted",
      "redistribution_condition": "Public-domain data may be modified and redistributed",
      "licence_scope": "Public domain: Natural Earth raster/vector data",
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      "licence_quote_ids": [
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    },
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      "machine_access": "Not established in inspected sources",
      "account_requirement": "Public download links displayed",
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      "version_selection": "Prior annual vintages selectable",
      "metadata_availability": "Technical chapters and errata",
      "join_identifiers": "Geographic entity codes; demographics separate",
      "personal_field_redaction": "Not established in inspected sources",
      "attribution_requirement": "Census source citation requested",
      "commercial_use": "Government works reproducible; trademark conditions remain",
      "redistribution_condition": "Source citation requested; TIGER/Line naming restrictions",
      "licence_scope": "Federal work under 17 USC 105",
      "acquisition_caveat": "Boundaries as of 1 January 2026; not legal land descriptions",
      "publisher": "US Census Bureau",
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        "S002",
        "S022"
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      "sources": [
        {
          "id": "S002",
          "url": "https://www.census.gov/geographies/mapping-files/time-series/geo/tiger-line-file.html",
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          "url": "https://www2.census.gov/geo/pdfs/maps-data/data/tiger/tgrshp2026/TGRSHP2026_TechDoc_Ch1.pdf",
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        "theme": [
          "Boundaries",
          "Transport"
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          "Shapefile"
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          "Public domain"
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        "access": [
          "Direct download"
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      },
      "licence": "US public domain (US Census Bureau-produced)",
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      "licence_checked_at_utc": "2026-10-25T00:04:19.672054+00:00",
      "licence_quote_ids": [
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      "record_id": "A03",
      "item_name": "Geofabrik OSM extracts",
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      "price_model": "Free extracts; extended products commercial",
      "update_pattern": "Daily",
      "version_selection": "Not established in inspected sources",
      "metadata_availability": "Regional source pages",
      "join_identifiers": "Not established in inspected sources",
      "personal_field_redaction": "Public raw excludes user and changeset identity fields",
      "attribution_requirement": "OpenStreetMap credit",
      "commercial_use": "Allowed subject to ODbL",
      "redistribution_condition": "Database share-alike and notices may apply",
      "licence_scope": "ODbL 1.0 database terms",
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      "publisher": "OpenStreetMap contributors / Geofabrik",
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        {
          "id": "S003",
          "url": "https://www.geofabrik.de/data/download.html",
          "observed_utc": "2026-10-25T00:04:17.874390+00:00",
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          "url": "https://opendatacommons.org/licenses/odbl/1-0/",
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          "status": "opened",
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          "Shapefile"
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          "ODbL"
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        "access": [
          "Direct download"
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      },
      "licence": "Open Database License 1.0 (ODbL)",
      "licence_source_ids": [
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      "licence_quote_ids": [
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      "item_name": "HydroSHEDS v1 core",
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      "file_formats": "Compressed gridded products",
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      "machine_access": "Not established in inspected sources",
      "account_requirement": "Not established in inspected sources",
      "price_model": "Free",
      "update_pattern": "Not established in inspected sources",
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      "metadata_availability": "Technical documentation and product codes",
      "join_identifiers": "Not established in inspected sources",
      "personal_field_redaction": "Not established in inspected sources",
      "attribution_requirement": "Required",
      "commercial_use": "Permitted under custom WWF terms",
      "redistribution_condition": "Standalone redistribution prohibited; derivatives conditional",
      "licence_scope": "Custom WWF HydroSHEDS agreement",
      "acquisition_caveat": "SRTM-derived coverage and northern substitute differ",
      "publisher": "WWF / HydroSHEDS",
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      },
      "licence": "HydroSHEDS v1 Licence Agreement",
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      "licence_quote_ids": [
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      "personal_field_redaction": "Not established in inspected sources",
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      "redistribution_condition": "CC BY 4.0 attribution and notices",
      "licence_scope": "CC BY 4.0: gbOpen only",
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      "publisher": "William & Mary geoLab / community",
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      "sources": [
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      },
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      "subset_method": "AOI search; product and resolution selection",
      "bulk_access": "National Map product links",
      "machine_access": "WMS and WCS; product downloads",
      "account_requirement": "Public 3DEP links; EarthExplorer access differs",
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      "metadata_availability": "XML metadata plus spatial GeoPackage metadata",
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      "commercial_use": "USGS data unrestricted; third-party website media excluded",
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      "filters": {
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        "access": [
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      },
      "licence": "US public domain (USGS-produced)",
      "licence_source_ids": [
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      "licence_checked_at_utc": "2026-10-25T00:04:24.630854+00:00",
      "licence_quote_ids": [
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      "bulk_access": "Direct product directories",
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      "price_model": "Free",
      "update_pattern": "NHD retired October 2023; 3DHP is successor; NHDPlus/WBD schedules differ",
      "version_selection": "NHDPlus current folders and national releases",
      "metadata_availability": "Product metadata and release notes",
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      "redistribution_condition": "Public-domain USGS data; preserve provenance",
      "licence_scope": "USGS-produced data; not all external contributions automatically covered",
      "acquisition_caveat": "Archived NHD is accessible but no longer maintained",
      "publisher": "USGS",
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        ],
        "access": [
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      },
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      "licence_quote_ids": [
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    },
    {
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      "geographic_scope": "US states and territories; Alaska incomplete",
      "representation": "Vector",
      "file_formats": "Zipped GeoPackage or file geodatabase",
      "download_unit": "State; larger custom requests separate",
      "subset_method": "State selection; clip locally with overlap checks",
      "bulk_access": "State archives; larger extents request-based",
      "machine_access": "Not established in inspected sources",
      "account_requirement": "Public state links displayed",
      "price_model": "No price stated on download page",
      "update_pattern": "May and October updates",
      "version_selection": "Download-date and metadata comparison",
      "metadata_availability": "Project metadata includes imagery dates and coverage",
      "join_identifiers": "Not established in inspected sources",
      "personal_field_redaction": "Not established in inspected sources",
      "attribution_requirement": "Not established in inspected sources",
      "commercial_use": "Not established in inspected sources",
      "redistribution_condition": "Not established in inspected sources",
      "licence_scope": "No exact dataset-wide licence statement established on inspected download/mapping pages",
      "acquisition_caveat": "Adjacent state files overlap; map coverage is not a regulatory wetland determination",
      "publisher": "US Fish & Wildlife Service / contributors",
      "source_ids": [
        "S008",
        "S069"
      ],
      "sources": [
        {
          "id": "S008",
          "url": "https://www.fws.gov/program/national-wetlands-inventory/download-state-wetlands-data",
          "observed_utc": "2026-10-25T00:04:17.874788+00:00",
          "status": "opened",
          "source_body_sha256": "0b730ce598da0b48bde29819835e5efbd46473c69cc35b419e2d9a8083ea82d9",
          "observation_sha256": null
        },
        {
          "id": "S069",
          "url": "https://www.fws.gov/program/national-wetlands-inventory/wetlands-mapping",
          "observed_utc": "2026-10-25T00:06:04.921Z",
          "status": "opened",
          "source_body_sha256": null,
          "observation_sha256": "11cd52f95d329966ed14aca1fe726de92b25e163d491d819bb95bc93adf03bc5"
        }
      ],
      "checked_at_utc": "2026-10-25T00:06:04.921Z",
      "filters": {
        "geography": [
          "United States"
        ],
        "theme": [
          "Wetlands",
          "Hydrology"
        ],
        "format": [
          "GeoPackage",
          "File geodatabase"
        ],
        "licence": [
          "Check dataset terms"
        ],
        "access": [
          "Direct download"
        ]
      },
      "licence": "Not established; check the dataset’s terms",
      "licence_source_ids": [
        "S008",
        "S069"
      ],
      "licence_checked_at_utc": "2026-10-25T00:06:04.921Z",
      "licence_quote_ids": []
    },
    {
      "record_id": "A09",
      "item_name": "NOAA Digital Coast",
      "source_url": "https://coast.noaa.gov/digitalcoast/data/",
      "source_version": "Current inspected documentation",
      "audit_status": "Primary documentation inspected; no acquisition transaction tested",
      "data_theme": "Coastal elevation, imagery, habitats and socioeconomic layers",
      "geographic_scope": "US coastal regions; collection-specific",
      "representation": "Raster, vector and lidar collections",
      "file_formats": "Collection-specific; no uniform format established",
      "download_unit": "Selected collection or AOI",
      "subset_method": "Place and theme filters",
      "bulk_access": "Not established in inspected sources",
      "machine_access": "Not established in inspected sources",
      "account_requirement": "Public catalogue; product-specific requirements unresolved",
      "price_model": "Collection-specific",
      "update_pattern": "Collection-specific",
      "version_selection": "Not established in inspected sources",
      "metadata_availability": "Follow selected collection metadata",
      "join_identifiers": "Not established in inspected sources",
      "personal_field_redaction": "Not established in inspected sources",
      "attribution_requirement": "Not established in inspected sources",
      "commercial_use": "Not established in inspected sources",
      "redistribution_condition": "Not established in inspected sources",
      "licence_scope": "Rights belong to individual source collections; NOAA disclaimer is not a blanket data licence",
      "acquisition_caveat": "Catalogue discovery is not proof of file completeness, API availability or unrestricted reuse",
      "publisher": "NOAA Office for Coastal Management / data partners",
      "source_ids": [
        "S009",
        "S062"
      ],
      "sources": [
        {
          "id": "S009",
          "url": "https://coast.noaa.gov/digitalcoast/data/",
          "observed_utc": "2026-10-25T00:04:18.155124+00:00",
          "status": "opened",
          "source_body_sha256": "411bad3ce2d15ebbd3dbeb543a5f5fa7382a39df556138d030b78e7b7c2f5261",
          "observation_sha256": null
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        {
          "id": "S062",
          "url": "https://www.noaa.gov/disclaimer",
          "observed_utc": "2026-10-25T00:05:26.552337+00:00",
          "status": "opened",
          "source_body_sha256": "338b555aee78354b2def2eef85a446222f8030a769ed2a44668f74a2f299302d",
          "observation_sha256": null
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      ],
      "checked_at_utc": "2026-10-25T00:05:26.552337+00:00",
      "filters": {
        "geography": [
          "United States"
        ],
        "theme": [
          "Coasts",
          "Elevation",
          "Imagery"
        ],
        "format": [
          "Varies by dataset"
        ],
        "licence": [
          "Check dataset terms"
        ],
        "access": [
          "Portal",
          "Direct download"
        ]
      },
      "licence": "Dataset-specific terms; no blanket licence established",
      "licence_source_ids": [
        "S009",
        "S062"
      ],
      "licence_checked_at_utc": "2026-10-25T00:05:26.552337+00:00",
      "licence_quote_ids": []
    },
    {
      "record_id": "A10",
      "item_name": "NASA Earthdata",
      "source_url": "https://www.earthdata.nasa.gov/",
      "source_version": "Current inspected documentation",
      "audit_status": "Primary documentation inspected; no acquisition transaction tested",
      "data_theme": "Earth observation and derived science products",
      "geographic_scope": "Global, regional and campaign-specific",
      "representation": "Raster, tables and other scientific data",
      "file_formats": "Collection-specific; consult product variables and guide",
      "download_unit": "Granule, tile or subset",
      "subset_method": "Collection, space and time discovery",
      "bulk_access": "Collection-specific workflows",
      "machine_access": "CMR and product services; not executed",
      "account_requirement": "Earthdata Login commonly required for download; collection-specific",
      "price_model": "NASA open data free; third-party access may differ",
      "update_pattern": "Mission and collection-specific",
      "version_selection": "Collection version and granule metadata",
      "metadata_availability": "Product descriptions, variables, guides and DOI",
      "join_identifiers": "Not established in inspected sources",
      "personal_field_redaction": "Not established in inspected sources",
      "attribution_requirement": "Dataset citation strongly requested",
      "commercial_use": "Unrestricted NASA-led unmarked data; inspect non-NASA conditions",
      "redistribution_condition": "CC0 default for unmarked NASA-led data; third-party terms retained",
      "licence_scope": "Conditional NASA data policy; not every hosted external product",
      "acquisition_caveat": "Public metadata access does not demonstrate a successful authenticated data download",
      "publisher": "NASA Earth Science Data Systems / DAACs",
      "source_ids": [
        "S010",
        "S064"
      ],
      "sources": [
        {
          "id": "S010",
          "url": "https://www.earthdata.nasa.gov/",
          "observed_utc": "2026-10-25T00:04:18.377205+00:00",
          "status": "opened",
          "source_body_sha256": "6d3332536bf662d0accef5ba88dfa25d823013d326aa673e1fa0e04932e2ed11",
          "observation_sha256": null
        },
        {
          "id": "S064",
          "url": "https://www.earthdata.nasa.gov/engage/open-data-services-software-policies/data-use-guidance",
          "observed_utc": "2026-10-25T00:05:26.552682+00:00",
          "status": "opened",
          "source_body_sha256": "b4992f3f1a8d1934e35041d34ad36e5fd3a589093559f5240477f0d9dc66707c",
          "observation_sha256": null
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      ],
      "checked_at_utc": "2026-10-25T00:05:26.552682+00:00",
      "filters": {
        "geography": [
          "Worldwide"
        ],
        "theme": [
          "Earth observation",
          "Elevation",
          "Imagery"
        ],
        "format": [
          "Varies by dataset"
        ],
        "licence": [
          "CC0 or source terms"
        ],
        "access": [
          "Portal",
          "Account may be required",
          "API"
        ]
      },
      "licence": "CC0 (unmarked NASA-led mission data; check exceptions)",
      "licence_source_ids": [
        "S064"
      ],
      "licence_checked_at_utc": "2026-10-25T00:05:26.552682+00:00",
      "licence_quote_ids": [
        "TQ-S064-37a9dfe1"
      ]
    },
    {
      "record_id": "A11",
      "item_name": "Copernicus DEM",
      "source_url": "https://dataspace.copernicus.eu/explore-data/data-collections/copernicus-contributing-missions/collections-description/COP-DEM",
      "source_version": "Current inspected documentation",
      "audit_status": "Primary documentation inspected; no acquisition transaction tested",
      "data_theme": "Surface elevation",
      "geographic_scope": "Global GLO-30/GLO-90; European EEA-10",
      "representation": "Raster DSM",
      "file_formats": "GeoTIFF DGED/INSPIRE; DTED",
      "download_unit": "Geocell or bulk collection",
      "subset_method": "Product, release and geographic area",
      "bulk_access": "S3-compatible and OData access with temporary credentials",
      "machine_access": "OData and S3-compatible access",
      "account_requirement": "Registration; EEA-10 restricted eligible groups",
      "price_model": "GLO-30/GLO-90 free licence",
      "update_pattern": "Versioned corrections; releases 2019_1–2024_1 inspected",
      "version_selection": "Named release collections",
      "metadata_availability": "Product handbook, INSPIRE metadata and quality masks",
      "join_identifiers": "Not established in inspected sources",
      "personal_field_redaction": "Not established in inspected sources",
      "attribution_requirement": "Exact source/derivative notices required",
      "commercial_use": "Check applicable instance licence",
      "redistribution_condition": "Custom notices; EEA-10 access restriction separate",
      "licence_scope": "Instance-specific ESA terms",
      "acquisition_caveat": "Surface includes buildings and vegetation; EEA-10 is not general-public download",
      "publisher": "ESA / Copernicus / Airbus",
      "source_ids": [
        "S011",
        "S036"
      ],
      "sources": [
        {
          "id": "S011",
          "url": "https://dataspace.copernicus.eu/explore-data/data-collections/copernicus-contributing-missions/collections-description/COP-DEM",
          "observed_utc": "2026-10-25T00:04:18.448334+00:00",
          "status": "opened",
          "source_body_sha256": "04117148fd924902e4099a321f785c296806f93fdb83b033c99bcc9f3cd476cb",
          "observation_sha256": null
        },
        {
          "id": "S036",
          "url": "https://dataspace.copernicus.eu/sites/default/files/media/files/2025-06/copernicus_contributing_mission_data_access_v2_cop_dem_licenses.pdf",
          "observed_utc": "2026-10-25T00:04:21.110091+00:00",
          "status": "opened",
          "source_body_sha256": "bb4a01dcd7f61acefa81c9ccd76af975e12096158169acf0d7b5c44c26c8701f",
          "observation_sha256": null
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      ],
      "checked_at_utc": "2026-10-25T00:04:21.110091+00:00",
      "filters": {
        "geography": [
          "Worldwide",
          "Europe"
        ],
        "theme": [
          "Elevation"
        ],
        "format": [
          "GeoTIFF",
          "DTED"
        ],
        "licence": [
          "Custom terms"
        ],
        "access": [
          "Account may be required",
          "API"
        ]
      },
      "licence": "Copernicus DEM ESA–User Licence (instance-specific)",
      "licence_source_ids": [
        "S036"
      ],
      "licence_checked_at_utc": "2026-10-25T00:04:21.110091+00:00",
      "licence_quote_ids": [
        "TQ-S011-e93acf28"
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    },
    {
      "record_id": "A12",
      "item_name": "Polar Geospatial Center ArcticDEM",
      "source_url": "https://www.pgc.umn.edu/data/arcticdem/",
      "source_version": "Current inspected documentation",
      "audit_status": "Primary documentation inspected; no acquisition transaction tested",
      "data_theme": "Arctic surface elevation",
      "geographic_scope": "Arctic; post-June-2022 Alaska imagery excluded from public strips",
      "representation": "Raster DSM",
      "file_formats": "GeoTIFF; extent indexes in multiple vector formats",
      "download_unit": "Strip or mosaic tile",
      "subset_method": "Extent indexes and STAC",
      "bulk_access": "Public PGC and cloud stores",
      "machine_access": "Static/dynamic STAC",
      "account_requirement": "Public products; restricted imagery separate",
      "price_model": "Public released DEMs free",
      "update_pattern": "Annual strip releases; mosaics versioned",
      "version_selection": "Strip acquisition date and mosaic version",
      "metadata_availability": "Per-strip dates and product metadata",
      "join_identifiers": "Not established in inspected sources",
      "personal_field_redaction": "Not established in inspected sources",
      "attribution_requirement": "PGC acknowledgement and product citation",
      "commercial_use": "Publicly released DEM terms; source imagery is separate",
      "redistribution_condition": "Release-specific NextView/EOCL exception; not general commercial imagery rights",
      "licence_scope": "Public ArcticDEM releases with geographic/date exception",
      "acquisition_caveat": "Public strip availability excludes newer Alaska data; strips and mosaics differ",
      "publisher": "Polar Geospatial Center / NGA / NSF",
      "source_ids": [
        "S012",
        "S039"
      ],
      "sources": [
        {
          "id": "S012",
          "url": "https://www.pgc.umn.edu/data/arcticdem/",
          "observed_utc": "2026-10-25T00:04:18.622149+00:00",
          "status": "opened",
          "source_body_sha256": "655b75ddf3803bfec34e79c3039100b5883241f5f3b78f4c1ba18c44e5c134ea",
          "observation_sha256": null
        },
        {
          "id": "S039",
          "url": "https://www.pgc.umn.edu/guides/commercial-imagery/eocl-license-pgc-faq/",
          "observed_utc": "2026-10-25T00:04:21.561645+00:00",
          "status": "opened",
          "source_body_sha256": "f4c0ab8793fc941148930cc53f73a3af4f8b13a0894a8ba64de6e7fac7890829",
          "observation_sha256": null
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      "checked_at_utc": "2026-10-25T00:04:21.561645+00:00",
      "filters": {
        "geography": [
          "Arctic"
        ],
        "theme": [
          "Elevation"
        ],
        "format": [
          "GeoTIFF"
        ],
        "licence": [
          "Custom terms"
        ],
        "access": [
          "Direct download",
          "API"
        ]
      },
      "licence": "NextView / EOCL public DEM release exception",
      "licence_source_ids": [
        "S039"
      ],
      "licence_checked_at_utc": "2026-10-25T00:04:21.561645+00:00",
      "licence_quote_ids": [
        "TQ-S039-354c092c"
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    },
    {
      "record_id": "A13",
      "item_name": "GEBCO",
      "source_url": "https://www.gebco.net/data-products/gridded-bathymetry-data",
      "source_version": "Current inspected documentation",
      "audit_status": "Primary documentation inspected; no acquisition transaction tested",
      "data_theme": "Land terrain and seafloor bathymetry",
      "geographic_scope": "Global",
      "representation": "Raster",
      "file_formats": "netCDF; GeoTIFF; Esri ASCII raster",
      "download_unit": "Global grid, tiles or subset",
      "subset_method": "User-defined area",
      "bulk_access": "Global files and eight 90-degree tiles",
      "machine_access": "OPeNDAP",
      "account_requirement": "Public links displayed",
      "price_model": "Free",
      "update_pattern": "Annual; 2026 grid inspected",
      "version_selection": "Annual editions and historical grids",
      "metadata_availability": "Grid documentation, DOI, TID and errata",
      "join_identifiers": "Not established in inspected sources",
      "personal_field_redaction": "Not established in inspected sources",
      "attribution_requirement": "Acknowledgement requested",
      "commercial_use": "Public domain subject to published conditions",
      "redistribution_condition": "Preserve conditions and provenance; no navigation guarantee",
      "licence_scope": "GEBCO grid; not a safe-navigation product",
      "acquisition_caveat": "15 arc-second spacing is not local measurement density or guaranteed accuracy",
      "publisher": "GEBCO Bathymetric Compilation Group",
      "source_ids": [
        "S013",
        "S040"
      ],
      "sources": [
        {
          "id": "S013",
          "url": "https://www.gebco.net/data-products/gridded-bathymetry-data",
          "observed_utc": "2026-10-25T00:04:18.723906+00:00",
          "status": "opened",
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          "observation_sha256": null
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          "id": "S040",
          "url": "https://www.gebco.net/data-products/gridded-bathymetry/terms-of-use",
          "observed_utc": "2026-10-25T00:04:21.758765+00:00",
          "status": "opened",
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          "observation_sha256": null
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      "filters": {
        "geography": [
          "Worldwide"
        ],
        "theme": [
          "Bathymetry",
          "Elevation"
        ],
        "format": [
          "netCDF",
          "GeoTIFF",
          "ASCII grid"
        ],
        "licence": [
          "Public domain"
        ],
        "access": [
          "Direct download",
          "Web service"
        ]
      },
      "licence": "Public domain (GEBCO terms of use)",
      "licence_source_ids": [
        "S040"
      ],
      "licence_checked_at_utc": "2026-10-25T00:04:21.758765+00:00",
      "licence_quote_ids": [
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    },
    {
      "record_id": "A14",
      "item_name": "Natural Resources Canada GeoGratis",
      "source_url": "https://geogratis.gc.ca/site/eng/download",
      "source_version": "Current inspected documentation",
      "audit_status": "Primary documentation inspected; no acquisition transaction tested",
      "data_theme": "Canadian topographic and elevation collections",
      "geographic_scope": "Canada",
      "representation": "Vector and raster",
      "file_formats": "CanVec SHP/file geodatabase; elevation formats not established here",
      "download_unit": "Prepackaged collection files",
      "subset_method": "Dataset/theme and download directory",
      "bulk_access": "Direct directories; some legacy FTP paths",
      "machine_access": "Direct file access; no API verified",
      "account_requirement": "Public directory links displayed",
      "price_model": "Public downloads; no price stated",
      "update_pattern": "Collection-specific; current cadence not established",
      "version_selection": "Product release notes",
      "metadata_availability": "Feature catalogues, specifications and coding transition guide",
      "join_identifiers": "Not established in inspected sources",
      "personal_field_redaction": "Not established in inspected sources",
      "attribution_requirement": "Open Government Licence attribution",
      "commercial_use": "Permitted under applicable OGL terms",
      "redistribution_condition": "OGL conditions and source acknowledgement",
      "licence_scope": "Data distributed from inspected prepackaged page",
      "acquisition_caveat": "A displayed legacy FTP directory is not a successful file-download test",
      "publisher": "Natural Resources Canada",
      "source_ids": [
        "S014",
        "S066",
        "S071"
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      "sources": [
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          "observed_utc": "2026-10-25T00:04:18.963375+00:00",
          "status": "opened",
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          "observation_sha256": null
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          "id": "S066",
          "url": "https://geogratis.gc.ca/site/eng/download",
          "observed_utc": "2026-10-25T00:06:04.921Z",
          "status": "opened",
          "source_body_sha256": null,
          "observation_sha256": "11cd52f95d329966ed14aca1fe726de92b25e163d491d819bb95bc93adf03bc5"
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          "url": "https://geogratis.gc.ca/site/eng/download",
          "observed_utc": "2026-10-25T00:09:47.181386+00:00",
          "status": "opened",
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          "observation_sha256": null
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      "checked_at_utc": "2026-10-25T00:09:47.181386+00:00",
      "filters": {
        "geography": [
          "Canada"
        ],
        "theme": [
          "Basemaps",
          "Elevation"
        ],
        "format": [
          "Shapefile",
          "File geodatabase"
        ],
        "licence": [
          "Open government licence"
        ],
        "access": [
          "Direct download"
        ]
      },
      "licence": "Open Government Licence – Canada",
      "licence_source_ids": [
        "S071"
      ],
      "licence_checked_at_utc": "2026-10-25T00:09:47.181386+00:00",
      "licence_quote_ids": [
        "TQ-S066-33f48508"
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    },
    {
      "record_id": "A15",
      "item_name": "Ordnance Survey OpenData",
      "source_url": "https://www.ordnancesurvey.co.uk/products/open-data",
      "source_version": "Current inspected documentation",
      "audit_status": "Primary documentation inspected; no acquisition transaction tested",
      "data_theme": "Mapping, boundaries, addresses and transport",
      "geographic_scope": "Great Britain; product exceptions apply",
      "representation": "Vector, raster and tables",
      "file_formats": "GeoPackage, GML, Shapefile, CSV; product-dependent",
      "download_unit": "Product/region",
      "subset_method": "Product-specific selection",
      "bulk_access": "OS Data Hub downloads",
      "machine_access": "Not established in inspected sources",
      "account_requirement": "Not established; hub required JavaScript in text fetch",
      "price_model": "Free OpenData portfolio",
      "update_pattern": "Product-specific",
      "version_selection": "Product release information",
      "metadata_availability": "Product support and schemas",
      "join_identifiers": "UPRN, USRN and other identifiers by product",
      "personal_field_redaction": "Not established in inspected sources",
      "attribution_requirement": "OS/OGL attribution; additional upstream notices may apply",
      "commercial_use": "Permitted under OGL",
      "redistribution_condition": "OGL notices; do not apply premium-data terms or vice versa",
      "licence_scope": "OS OpenData only",
      "acquisition_caveat": "Great Britain is not all UK; each product has its own content and release",
      "publisher": "Ordnance Survey",
      "source_ids": [
        "S015",
        "S045"
      ],
      "sources": [
        {
          "id": "S015",
          "url": "https://osdatahub.os.uk/downloads/open",
          "observed_utc": "2026-10-25T00:04:19.143319+00:00",
          "status": "opened",
          "source_body_sha256": "0d832823f6d6121f9e425dbc34cc125f5f10e2c00e0799a6f0d1ac1951276030",
          "observation_sha256": null
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          "id": "S045",
          "url": "https://www.ordnancesurvey.co.uk/products/open-data",
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      "filters": {
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        ],
        "theme": [
          "Basemaps",
          "Boundaries",
          "Transport"
        ],
        "format": [
          "GeoPackage",
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          "Shapefile",
          "CSV"
        ],
        "licence": [
          "Open government licence"
        ],
        "access": [
          "Direct download"
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      },
      "licence": "Open Government Licence (OGL)",
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      "licence_checked_at_utc": "2026-10-25T00:04:22.622108+00:00",
      "licence_quote_ids": [
        "TQ-S045-13e70b3e"
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    },
    {
      "record_id": "A16",
      "item_name": "Eurostat GISCO",
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      "bulk_access": "Not established in inspected sources",
      "machine_access": "Not established in inspected sources",
      "account_requirement": "Public download sections displayed",
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      "update_pattern": "Layer- and statistical-vintage specific",
      "version_selection": "Choose compatible boundary vintage",
      "metadata_availability": "Per-theme pages and terms",
      "join_identifiers": "NUTS and other statistical codes where supplied",
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      "attribution_requirement": "Not established in inspected sources",
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      "redistribution_condition": "Dataset-specific GISCO conditions",
      "licence_scope": "Do not generalize one theme licence across GISCO",
      "acquisition_caveat": "Matching geography and statistical vintages must be checked before a join",
      "publisher": "European Commission / Eurostat",
      "source_ids": [
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      "sources": [
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        "licence": [
          "Custom terms"
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        "access": [
          "Direct download"
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      },
      "licence": "GISCO dataset-specific conditions (check the theme)",
      "licence_source_ids": [
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      "licence_checked_at_utc": "2026-10-25T00:04:07.538Z",
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    },
    {
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      "item_name": "LINZ Data Service",
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      "account_requirement": "Additional licence needed for personal-property data",
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      "version_selection": "Layer metadata",
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      "join_identifiers": "Not established in inspected sources",
      "personal_field_redaction": "Personal-data layers require an additional access licence",
      "attribution_requirement": "LINZ credit; imagery/elevation may require source-owner attribution",
      "commercial_use": "Generally permitted for open layers; exceptions apply",
      "redistribution_condition": "CC BY and additional layer-specific terms",
      "licence_scope": "Most layers CC BY 4.0; imagery and personal data have exceptions",
      "acquisition_caveat": "Aerial imagery and elevation are not all LINZ-owned data",
      "publisher": "Toitū Te Whenua LINZ / source partners",
      "source_ids": [
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        "S046"
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        "format": [
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          "Varies by dataset"
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        "licence": [
          "CC BY or source terms"
        ],
        "access": [
          "Portal",
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          "API"
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      },
      "licence": "CC BY 4.0 (most layers)",
      "licence_source_ids": [
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      "licence_checked_at_utc": "2026-10-25T00:04:22.642744+00:00",
      "licence_quote_ids": [
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    },
    {
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      "item_name": "Geoscience Australia data",
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      "data_theme": "Geology, geophysics, terrain and mapping",
      "geographic_scope": "Australia and offshore regions",
      "representation": "Product-dependent",
      "file_formats": "Collection-specific; no uniform format established",
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      "subset_method": "Data/publication search and thematic tools",
      "bulk_access": "Not established in inspected sources",
      "machine_access": "Web services linked; not exercised",
      "account_requirement": "Not established in inspected sources",
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      "version_selection": "Dataset release metadata",
      "metadata_availability": "Data/publication records and standards",
      "join_identifiers": "Not established in inspected sources",
      "personal_field_redaction": "Not established in inspected sources",
      "attribution_requirement": "Commonwealth/Geoscience Australia credit",
      "commercial_use": "CC BY unless specific or third-party restrictions",
      "redistribution_condition": "Attribution and retained notices; excluded content needs its own terms",
      "licence_scope": "GA-produced material except named exclusions",
      "acquisition_caveat": "The portal shell alone does not establish access or rights for a selected dataset",
      "publisher": "Geoscience Australia / collaborators",
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        "S055",
        "S041"
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          "status": "opened",
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          "url": "https://www.ga.gov.au/data-pubs",
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          "status": "opened",
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          "status": "opened",
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      "filters": {
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          "Elevation"
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        "format": [
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        ],
        "licence": [
          "CC BY or source terms"
        ],
        "access": [
          "Portal",
          "Web service"
        ]
      },
      "licence": "CC BY 4.0 (GA-produced; stated exceptions)",
      "licence_source_ids": [
        "S041"
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      "licence_checked_at_utc": "2026-10-25T00:04:21.866328+00:00",
      "licence_quote_ids": [
        "TQ-S041-0d03e19f"
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    },
    {
      "record_id": "A19",
      "item_name": "WorldPop",
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      "source_version": "Current inspected documentation",
      "audit_status": "Primary documentation inspected; no acquisition transaction tested",
      "data_theme": "Modelled population and demographics",
      "geographic_scope": "Global, regional and bespoke country products",
      "representation": "Raster and tables",
      "file_formats": "GeoTIFF; CSV for some datasets",
      "download_unit": "Country/product/year or bespoke release",
      "subset_method": "Product, country and year",
      "bulk_access": "Not established in inspected sources",
      "machine_access": "WorldPop REST API and WOPR API",
      "account_requirement": "Public source links; account not established here",
      "price_model": "Open access",
      "update_pattern": "When new census/geospatial inputs or project needs arise",
      "version_selection": "Production date and source-input dates",
      "metadata_availability": "Dataset pages, methods and DOI; completeness varies",
      "join_identifiers": "Not established in inspected sources",
      "personal_field_redaction": "Not established in inspected sources",
      "attribution_requirement": "WorldPop source citation and dataset DOI",
      "commercial_use": "Allowed under CC BY 4.0",
      "redistribution_condition": "Credit original source and preserve notices",
      "licence_scope": "Published WorldPop data under FAQ terms; check selected release",
      "acquisition_caveat": "Modelled counts are not a census enumeration; pph and ppp CRS differ",
      "publisher": "WorldPop / University of Southampton",
      "source_ids": [
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        "S042"
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        "access": [
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      "licence_checked_at_utc": "2026-10-25T00:04:22.316402+00:00",
      "licence_quote_ids": [
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    },
    {
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      "item_name": "Overture Maps",
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      "data_theme": "Addresses, base, buildings, divisions, places and transportation",
      "geographic_scope": "Worldwide with uneven feature completeness",
      "representation": "Vector",
      "file_formats": "GeoParquet documented; query/export tools separate",
      "download_unit": "Release/theme partition or spatial query",
      "subset_method": "Spatial query and theme selection",
      "bulk_access": "Official S3 and Azure releases",
      "machine_access": "CLI and query engines; no service tested",
      "account_requirement": "Access depends on chosen platform; no universal account requirement verified",
      "price_model": "Open data; external compute/hosting costs separate",
      "update_pattern": "Published release calendar",
      "version_selection": "Named release and schema versions",
      "metadata_availability": "Schema, provenance and attribution pages",
      "join_identifiers": "GERS IDs with lifecycle/version considerations",
      "personal_field_redaction": "Not established in inspected sources",
      "attribution_requirement": "Theme and upstream-source notices",
      "commercial_use": "Depends on theme/source licence",
      "redistribution_condition": "ODbL or other applicable upstream conditions",
      "licence_scope": "Mixed theme/source licences; not uniformly permissive",
      "acquisition_caveat": "Feature provenance and current attribution must travel with exports",
      "publisher": "Overture Maps Foundation / upstream contributors",
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        "S044",
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      "filters": {
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          "Places"
        ],
        "format": [
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        ],
        "licence": [
          "Mixed licences"
        ],
        "access": [
          "Direct download",
          "API"
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      },
      "licence": "ODbL; CDLA Permissive 2.0; other theme/source terms",
      "licence_source_ids": [
        "S044"
      ],
      "licence_checked_at_utc": "2026-10-25T00:04:22.582874+00:00",
      "licence_quote_ids": [
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  ],
  "edited_utc": "2026-10-25T01:48:27.970967+00:00",
  "edit_pass": "E1",
  "terms_field": "licence names the documented licence/status; licence_scope/reuse_condition retains limitations; verbatim excerpts are only in source-ledger.json terms_quotes."
}
