{
 "about": "Where every figure on a Painted Deep print and page comes from. Published figures are copied as their page states them, with the page and the day they were read.",
 "read": "2026-10-18",
 "depth": [
  {
   "id": "noaa",
   "what": "The sea floor and the land under every frame, asked by our server",
   "name": "NOAA NCEI DEM global mosaic",
   "by": "NOAA National Centers for Environmental Information",
   "url": "https://gis.ngdc.noaa.gov/arcgis/rest/services/DEM_mosaics/DEM_global_mosaic/ImageServer",
   "licence": "Public domain (U.S. Government work)"
  },
  {
   "id": "gmrt",
   "what": "Multibeam cells laid over the mosaic in a spot frame up to 400 km across",
   "name": "Global Multi-Resolution Topography (GMRT) Synthesis",
   "by": "Lamont-Doherty Earth Observatory, Columbia University",
   "url": "https://www.gmrt.org/services/GridServer",
   "licence": "CC BY 4.0",
   "credit": "Ryan, W.B.F. et al. (2009), Global Multi-Resolution Topography synthesis, Geochem. Geophys. Geosyst., 10, Q03014, doi:10.1029/2008GC002332"
  },
  {
   "id": "etopo",
   "what": "The fallback grid, and the grid every receipt is read from",
   "name": "ETOPO 2022 15 arc-second Global Relief Model",
   "by": "NOAA National Centers for Environmental Information",
   "url": "https://coastwatch.pfeg.noaa.gov/erddap/griddap/ETOPO_2022_v1_15s.esriAscii",
   "licence": "Public domain (U.S. Government work)",
   "credit": "NOAA National Centers for Environmental Information. 2022: ETOPO 2022 15 Arc-Second Global Relief Model. doi:10.25921/fd45-gt74"
  }
 ],
 "names": [
  {
   "id": "gazetteer",
   "what": "Every undersea name, set in small caps",
   "name": "IHO-IOC GEBCO Gazetteer of Undersea Feature Names",
   "by": "IHO Data Centre for Digital Bathymetry",
   "url": "https://services2.arcgis.com/C8EMgrsFcRFL6LrL/arcgis/rest/services/Undersea_Features/FeatureServer",
   "credit": "IHO-IOC GEBCO Gazetteer of Undersea Feature Names, www.gebco.net"
  },
  {
   "id": "osm",
   "what": "Every coastal name: bays, capes, beaches, reefs, islands, harbours, marinas, lighthouses and towns",
   "name": "OpenStreetMap",
   "by": "OpenStreetMap contributors",
   "url": "https://www.openstreetmap.org/copyright",
   "licence": "Open Database License (ODbL) 1.0",
   "credit": "© OpenStreetMap contributors, ODbL"
  },
  {
   "id": "nominatim",
   "what": "Place search, from your browser, on submit only",
   "name": "Nominatim",
   "by": "OpenStreetMap Foundation",
   "url": "https://operations.osmfoundation.org/policies/nominatim/"
  },
  {
   "id": "overpass",
   "what": "The coast's names inside a spot frame, from your browser",
   "name": "Overpass API",
   "by": "FOSSGIS e.V. (overpass-api.de), with VK Maps' public instance (maps.mail.ru) as the fallback",
   "url": "https://overpass-api.de/"
  }
 ],
 "waters": [
  {
   "id": "eez",
   "what": "A country's waters: the hairline and the area",
   "name": "Maritime Boundaries Geodatabase, Exclusive Economic Zones",
   "by": "Flanders Marine Institute (VLIZ)",
   "url": "https://geo.vliz.be/geoserver/MarineRegions/wfs",
   "licence": "CC BY 4.0",
   "credit": "Flanders Marine Institute, Maritime Boundaries Geodatabase: Exclusive Economic Zones, Marine Regions, www.marineregions.org, CC BY 4.0"
  }
 ],
 "imagery": [
  {
   "id": "naip",
   "what": "Land under the Satellite style, US frames up to 30 km",
   "name": "NAIP, USDA Farm Production and Conservation Business Center",
   "by": "USDA Farm Production and Conservation Business Center, served by the USGS",
   "url": "https://imagery.nationalmap.gov/arcgis/rest/services/USGSNAIPImagery/ImageServer",
   "licence": "Public domain"
  },
  {
   "id": "sentinel",
   "what": "Land under the Satellite style, frames up to 400 km",
   "name": "Copernicus Sentinel-2",
   "by": "European Space Agency and the European Commission; found through Element 84's Earth Search",
   "url": "https://earth-search.aws.element84.com/v1",
   "licence": "Free, full and open (Copernicus)",
   "credit": "Contains modified Copernicus Sentinel data, with the year of the pass, printed on every Satellite sheet"
  },
  {
   "id": "viirs",
   "what": "Land under the Satellite style, frames up to 2,250 km",
   "name": "NASA VIIRS corrected reflectance, through NASA GIBS",
   "by": "NASA EOSDIS",
   "url": "https://gibs.earthdata.nasa.gov/",
   "credit": "Imagery from NASA's Global Imagery Browse Services (GIBS), part of NASA's Earth Science Data and Information System (ESDIS)"
  },
  {
   "id": "bluemarble",
   "what": "Land under the Satellite style, every wider frame",
   "name": "NASA Blue Marble Next Generation, through NASA GIBS",
   "by": "NASA Earth Observatory",
   "url": "https://gibs.earthdata.nasa.gov/"
  }
 ],
 "other": [
  {
   "id": "terrain",
   "what": "The hills ashore in The Oblique at a spot frame",
   "name": "AWS Terrain Tiles (Terrarium)",
   "by": "Registry of Open Data on AWS, from USGS 3DEP, SRTM, GMTED2010, ETOPO1 and national surveys",
   "url": "https://github.com/tilezen/joerd/blob/master/docs/attribution.md"
  },
  {
   "id": "fonts",
   "what": "The type on the page and the print",
   "name": "Newsreader, Hanken Grotesk, Spline Sans Mono",
   "by": "Production Type; Alfredo Marco Pradil and Hanken Design Co.; Eben Sorkin and Mirko Velimirović",
   "licence": "SIL Open Font License 1.1",
   "url": "https://fontsource.org/"
  }
 ],
 "tolerance": "A named deep: within the larger of 3% of the published depth and 150 m. A country's waters: within 2% of the area Marine Regions publishes. Both fixed before the first comparison.",
 "receipts": {
  "read": "2026-10-18",
  "method": "ETOPO 2022 15 arc-second through ERDDAP; tolerance the larger of 3 percent and 150 m; zones on the WGS84 ellipsoid, 2 percent",
  "deeps": {
   "pass": 13,
   "of": 20,
   "kept": true,
   "rows": [
    {
     "id": "challenger-deep",
     "name": "Challenger Deep",
     "published_m": 10935,
     "qualifier": null,
     "by": "Greenaway et al., Deep-Sea Research Part I 178:103644 (2021), doi:10.1016/j.dsr.2021.103644, NOAA Institutional Repository",
     "url": "https://repository.library.noaa.gov/view/noaa/33477",
     "place": "stated position",
     "box": [
      11.0733,
      11.673300000000001,
      142.2933,
      142.8933
     ],
     "measured_m": 10581,
     "at": [
      11.3563,
      142.4354
     ],
     "difference_m": -354,
     "tolerance_m": 328,
     "pass": false
    },
    {
     "id": "horizon-deep",
     "name": "Horizon Deep",
     "published_m": 10816,
     "qualifier": null,
     "by": "Bongiovanni, Stewart & Jamieson, Geoscience Data Journal 9:108-123 (2022, online 2021), doi:10.1002/gdj3.122",
     "url": "https://nora.nerc.ac.uk/id/eprint/530930/1/Geoscience%20Data%20Journal%20-%202021%20-%20Bongiovanni%20-%20High%E2%80%90resolution%20multibeam%20sonar%20bathymetry%20of%20the%20deepest%20place%20in%20each.pdf",
     "place": "stated position",
     "box": [
      -23.57,
      -22.97,
      -175.04000000000002,
      -174.44
     ],
     "measured_m": 10767,
     "at": [
      -23.2271,
      -174.7312
     ],
     "difference_m": -49,
     "tolerance_m": 324,
     "pass": true
    },
    {
     "id": "scholl-deep",
     "name": "Scholl Deep",
     "published_m": 10011,
     "qualifier": null,
     "by": "Jamieson, Giles & Stewart, Marine Geophysical Research 45:17 (2024), doi:10.1007/s11001-024-09550-7",
     "url": "https://nora.nerc.ac.uk/id/eprint/537766/1/s11001-024-09550-7.pdf",
     "place": "stated position",
     "box": [
      -32.235,
      -31.634999999999998,
      -177.61700000000002,
      -177.017
     ],
     "measured_m": 10102,
     "at": [
      -31.7687,
      -177.1854
     ],
     "difference_m": 91,
     "tolerance_m": 300,
     "pass": true
    },
    {
     "id": "galathea-depth",
     "name": "Galathea Depth",
     "published_m": 10025,
     "qualifier": null,
     "by": "Jamieson & Stewart, 'Hadal zones of the Northwest Pacific Ocean', Progress in Oceanography 190:102477 (2021), doi:10.1016/j.pocean.2020.102477 (accepted manuscript on NORA; depths from GMRT)",
     "url": "https://nora.nerc.ac.uk/id/eprint/529577/1/Jamieson%20and%20Stewart_MS_Resubmission_CLEAN.pdf",
     "place": "stated position",
     "box": [
      10.036,
      10.636000000000001,
      126.36500000000001,
      126.965
     ],
     "measured_m": 10018,
     "at": [
      10.3396,
      126.6521
     ],
     "difference_m": -7,
     "tolerance_m": 301,
     "pass": true
    },
    {
     "id": "kuril-kamchatka-trench-deepest-point",
     "name": "Kuril-Kamchatka Trench deepest point",
     "published_m": 9604,
     "qualifier": null,
     "by": "Dreutter, Steffen, Martínez Arbizu & Brandt, 'Will the top five deepest trenches lose one of their members?', Progress in Oceanography (2020), article 102258",
     "url": "https://doi.org/10.1016/j.pocean.2019.102258",
     "place": "stated position",
     "box": [
      44.864000000000004,
      45.464,
      152.38,
      152.98000000000002
     ],
     "measured_m": 9595,
     "at": [
      45.2313,
      152.8104
     ],
     "difference_m": -9,
     "tolerance_m": 288,
     "pass": true
    },
    {
     "id": "izu-ogasawara-trench-deepest-point",
     "name": "Izu-Ogasawara Trench deepest point",
     "published_m": null,
     "qualifier": null,
     "by": "Jamieson & Stewart, Progress in Oceanography 190:102477 (2021), doi:10.1016/j.pocean.2020.102477 (accepted manuscript; GMRT)",
     "url": "https://nora.nerc.ac.uk/id/eprint/529577/1/Jamieson%20and%20Stewart_MS_Resubmission_CLEAN.pdf",
     "place": "gazetteer point for Izu-Ogasawara Trench",
     "box": [
      31,
      33,
      141.166667,
      143.166667
     ],
     "measured_m": 9842,
     "at": [
      31.1979,
      142.2021
     ],
     "difference_m": null,
     "tolerance_m": null,
     "pass": false
    },
    {
     "id": "japan-trench-deepest-point",
     "name": "Japan Trench deepest point",
     "published_m": 8046,
     "qualifier": null,
     "by": "Jamieson & Stewart, Progress in Oceanography 190:102477 (2021), doi:10.1016/j.pocean.2020.102477 (accepted manuscript; GMRT)",
     "url": "https://nora.nerc.ac.uk/id/eprint/529577/1/Jamieson%20and%20Stewart_MS_Resubmission_CLEAN.pdf",
     "place": "stated position",
     "box": [
      35.765,
      36.364999999999995,
      142.42499999999998,
      143.025
     ],
     "measured_m": 8037,
     "at": [
      36.0354,
      142.6938
     ],
     "difference_m": -9,
     "tolerance_m": 241,
     "pass": true
    },
    {
     "id": "brownson-deep",
     "name": "Brownson Deep",
     "published_m": 8378,
     "qualifier": null,
     "by": "Bongiovanni, Stewart & Jamieson, Geoscience Data Journal 9:108-123 (2022, online 2021), doi:10.1002/gdj3.122",
     "url": "https://nora.nerc.ac.uk/id/eprint/530930/1/Geoscience%20Data%20Journal%20-%202021%20-%20Bongiovanni%20-%20High%E2%80%90resolution%20multibeam%20sonar%20bathymetry%20of%20the%20deepest%20place%20in%20each.pdf",
     "place": "stated position",
     "box": [
      19.412,
      20.012,
      -67.611,
      -67.01100000000001
     ],
     "measured_m": 8516,
     "at": [
      19.6229,
      -67.5854
     ],
     "difference_m": 138,
     "tolerance_m": 251,
     "pass": true
    },
    {
     "id": "meteor-deep",
     "name": "Meteor Deep",
     "published_m": 8265,
     "qualifier": null,
     "by": "Bongiovanni, Stewart & Jamieson, Geoscience Data Journal 9:108-123 (2022, online 2021), doi:10.1002/gdj3.122",
     "url": "https://nora.nerc.ac.uk/id/eprint/530930/1/Geoscience%20Data%20Journal%20-%202021%20-%20Bongiovanni%20-%20High%E2%80%90resolution%20multibeam%20sonar%20bathymetry%20of%20the%20deepest%20place%20in%20each.pdf",
     "place": "stated position",
     "box": [
      -55.529999999999994,
      -54.93,
      -26.473,
      -25.872999999999998
     ],
     "measured_m": 8221,
     "at": [
      -55.2229,
      -26.4437
     ],
     "difference_m": -44,
     "tolerance_m": 248,
     "pass": true
    },
    {
     "id": "atacama-deep",
     "name": "Atacama Deep",
     "published_m": 8087,
     "qualifier": null,
     "by": "IHO-IOC GEBCO Gazetteer of Undersea Feature Names, feature 890143 'Atacama Deep' (approved SCUFN-37, discovered 2018)",
     "url": "https://www.ngdc.noaa.gov/gazetteer/api/v1/feature?featureId=890143",
     "place": "stated position",
     "box": [
      -23.711180000000002,
      -23.11118,
      -71.64139999999999,
      -71.0414
     ],
     "measured_m": 7988,
     "at": [
      -23.4271,
      -71.3521
     ],
     "difference_m": -99,
     "tolerance_m": 243,
     "pass": true
    },
    {
     "id": "cayman-trough-deepest-point",
     "name": "Cayman Trough deepest point",
     "published_m": 7686,
     "qualifier": null,
     "by": "Lemenkova, Annales Universitatis Mariae Curie-Skłodowska sectio B 75:115-141 (2020), doi:10.17951/b.2020.75.0.115-141",
     "url": "https://journals.umcs.pl/b/article/download/11219/8178",
     "place": "gazetteer point for Cayman Trench",
     "box": [
      17.833333,
      19.833333,
      -82.5,
      -80.5
     ],
     "measured_m": 6984,
     "at": [
      19.0271,
      -80.5021
     ],
     "difference_m": -702,
     "tolerance_m": 231,
     "pass": false
    },
    {
     "id": "sunda-java-trench-deepest-point",
     "name": "Sunda (Java) Trench deepest point",
     "published_m": 7187,
     "qualifier": null,
     "by": "Bongiovanni, Stewart & Jamieson, Geoscience Data Journal 9:108-123 (2022, online 2021), doi:10.1002/gdj3.122",
     "url": "https://nora.nerc.ac.uk/id/eprint/530930/1/Geoscience%20Data%20Journal%20-%202021%20-%20Bongiovanni%20-%20High%E2%80%90resolution%20multibeam%20sonar%20bathymetry%20of%20the%20deepest%20place%20in%20each.pdf",
     "place": "stated position",
     "box": [
      -11.429,
      -10.828999999999999,
      114.642,
      115.24199999999999
     ],
     "measured_m": 7122,
     "at": [
      -11.1229,
      114.9354
     ],
     "difference_m": -65,
     "tolerance_m": 216,
     "pass": true
    },
    {
     "id": "molloy-deep",
     "name": "Molloy Deep",
     "published_m": 5551,
     "qualifier": null,
     "by": "Bongiovanni, Stewart & Jamieson, Geoscience Data Journal 9:108-123 (2022, online 2021), doi:10.1002/gdj3.122",
     "url": "https://nora.nerc.ac.uk/id/eprint/530930/1/Geoscience%20Data%20Journal%20-%202021%20-%20Bongiovanni%20-%20High%E2%80%90resolution%20multibeam%20sonar%20bathymetry%20of%20the%20deepest%20place%20in%20each.pdf",
     "place": "stated position",
     "box": [
      78.894,
      79.494,
      2.406,
      3.006
     ],
     "measured_m": 5561,
     "at": [
      79.1479,
      2.7896
     ],
     "difference_m": 10,
     "tolerance_m": 167,
     "pass": true
    },
    {
     "id": "litke-deep",
     "name": "Litke Deep",
     "published_m": 4000,
     "qualifier": "~",
     "by": "Stewart & Jamieson, Earth-Science Reviews 197:102896 (2019)",
     "url": "https://nora.nerc.ac.uk/id/eprint/524544/1/Stewart_and_Jamieson_2019_The%20five%20deeps.pdf",
     "place": "no published position",
     "box": null,
     "measured_m": null,
     "at": null,
     "difference_m": null,
     "tolerance_m": 150,
     "pass": false
    },
    {
     "id": "calypso-deep",
     "name": "Calypso Deep",
     "published_m": 5122,
     "qualifier": null,
     "by": "Hanke et al., 'Marine litter in the deepest site of the Mediterranean Sea', Marine Pollution Bulletin 213:117610 (2025)",
     "url": "https://archimer.ifremer.fr/doc/00936/104784/117025.pdf",
     "place": "stated position",
     "box": [
      36.2667,
      36.866699999999994,
      20.833299999999998,
      21.4333
     ],
     "measured_m": 5126,
     "at": [
      36.5729,
      21.1271
     ],
     "difference_m": 4,
     "tolerance_m": 154,
     "pass": true
    },
    {
     "id": "monterey-canyon",
     "name": "Monterey Canyon",
     "published_m": 4000,
     "qualifier": ">",
     "by": "USGS Open-File Report 2016-1072, California State Waters Map Series: Monterey Canyon and vicinity (pamphlet)",
     "url": "https://pubs.usgs.gov/of/2016/1072/ofr20161072_pamphlet.pdf",
     "place": "gazetteer point for Monterey Fan",
     "box": [
      35,
      37,
      -124.5,
      -122.5
     ],
     "measured_m": 4389,
     "at": [
      35.1146,
      -124.4604
     ],
     "difference_m": 389,
     "tolerance_m": 150,
     "pass": false
    },
    {
     "id": "nazare-canyon",
     "name": "Nazaré Canyon",
     "published_m": 5000,
     "qualifier": null,
     "by": "Tyler et al., 'Europe's Grand Canyon: Nazaré Submarine Canyon', Oceanography 22(1) (2009)",
     "url": "https://tos.org/oceanography/assets/docs/22-1_tyler.pdf",
     "place": "gazetteer point for Nazaré Canyon",
     "box": [
      38.584247,
      40.584247,
      -11.201127,
      -9.201127
     ],
     "measured_m": 5100,
     "at": [
      39.6521,
      -11.1979
     ],
     "difference_m": 100,
     "tolerance_m": 150,
     "pass": true
    },
    {
     "id": "kaikoura-canyon",
     "name": "Kaikoura Canyon",
     "published_m": null,
     "qualifier": null,
     "by": null,
     "url": null,
     "place": "no published position",
     "box": null,
     "measured_m": null,
     "at": null,
     "difference_m": null,
     "tolerance_m": null,
     "pass": false
    },
    {
     "id": "hikurangi-trough",
     "name": "Hikurangi Trough",
     "published_m": null,
     "qualifier": null,
     "by": null,
     "url": null,
     "place": "gazetteer point for Hikurangi Trough",
     "box": [
      -42.5,
      -40.5,
      176,
      178
     ],
     "measured_m": 3208,
     "at": [
      -41.4146,
      177.9896
     ],
     "difference_m": null,
     "tolerance_m": null,
     "pass": false
    },
    {
     "id": "ryukyu-trench",
     "name": "Ryukyu Trench",
     "published_m": 7447,
     "qualifier": null,
     "by": "Jamieson & Stewart, Progress in Oceanography 190:102477 (2021), doi:10.1016/j.pocean.2020.102477 (accepted manuscript; GMRT)",
     "url": "https://nora.nerc.ac.uk/id/eprint/529577/1/Jamieson%20and%20Stewart_MS_Resubmission_CLEAN.pdf",
     "place": "stated position",
     "box": [
      24.58,
      25.18,
      127.776,
      128.376
     ],
     "measured_m": 7449,
     "at": [
      24.8896,
      128.0771
     ],
     "difference_m": 2,
     "tolerance_m": 223,
     "pass": true
    }
   ]
  },
  "waters": [
   {
    "iso": "JPN",
    "name": "Japanese Exclusive Economic Zone",
    "mrgid": 8487,
    "pol_type": "200NM",
    "area_km2": 4066513,
    "measured_whole_km2": 4066398,
    "measured_thinned_km2": 4065705,
    "difference_whole": -0.003,
    "difference_thinned": -0.02,
    "pass": true
   },
   {
    "iso": "AUS",
    "name": "Australian Exclusive Economic Zone",
    "mrgid": 8323,
    "pol_type": "200NM",
    "area_km2": 6873830,
    "measured_whole_km2": 6873884,
    "measured_thinned_km2": 6873259,
    "difference_whole": 0.001,
    "difference_thinned": -0.008,
    "pass": true
   },
   {
    "iso": "NZL",
    "name": "New Zealand Exclusive Economic Zone",
    "mrgid": 8455,
    "pol_type": "200NM",
    "area_km2": 4104551,
    "measured_whole_km2": 4104562,
    "measured_thinned_km2": 4103746,
    "difference_whole": 0,
    "difference_thinned": -0.02,
    "pass": true
   },
   {
    "iso": "ISL",
    "name": "Icelandic Exclusive Economic Zone",
    "mrgid": 5680,
    "pol_type": "200NM",
    "area_km2": 763239,
    "measured_whole_km2": 763172,
    "measured_thinned_km2": 763101,
    "difference_whole": -0.009,
    "difference_thinned": -0.018,
    "pass": true
   },
   {
    "iso": "LKA",
    "name": "Sri Lankan Exclusive Economic Zone",
    "mrgid": 8346,
    "pol_type": "200NM",
    "area_km2": 533559,
    "measured_whole_km2": 533547,
    "measured_thinned_km2": 533377,
    "difference_whole": -0.002,
    "difference_thinned": -0.034,
    "pass": true
   },
   {
    "iso": "TWN",
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