EPSG:3785 - Popular Visualisation CRS / Mercator

{
  "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json",
  "type": "ProjectedCRS",
  "name": "Popular Visualisation CRS / Mercator",
  "base_crs": {
    "name": "Popular Visualisation CRS",
    "datum": {
      "type": "GeodeticReferenceFrame",
      "name": "Popular Visualisation Datum",
      "ellipsoid": {
        "name": "Popular Visualisation Sphere",
        "radius": 6378137
      }
    },
    "coordinate_system": {
      "subtype": "ellipsoidal",
      "axis": [
        {
          "name": "Geodetic latitude",
          "abbreviation": "Lat",
          "direction": "north",
          "unit": "degree"
        },
        {
          "name": "Geodetic longitude",
          "abbreviation": "Lon",
          "direction": "east",
          "unit": "degree"
        }
      ]
    },
    "id": {
      "authority": "EPSG",
      "code": 4055
    }
  },
  "conversion": {
    "name": "Popular Visualisation Mercator",
    "method": {
      "name": "Mercator (1SP) (Spherical)",
      "id": {
        "authority": "EPSG",
        "code": 9841
      }
    },
    "parameters": [
      {
        "name": "Latitude of natural origin",
        "value": 0,
        "unit": "degree",
        "id": {
          "authority": "EPSG",
          "code": 8801
        }
      },
      {
        "name": "Longitude of natural origin",
        "value": 0,
        "unit": "degree",
        "id": {
          "authority": "EPSG",
          "code": 8802
        }
      },
      {
        "name": "Scale factor at natural origin",
        "value": 1,
        "unit": "unity",
        "id": {
          "authority": "EPSG",
          "code": 8805
        }
      },
      {
        "name": "False easting",
        "value": 0,
        "unit": "metre",
        "id": {
          "authority": "EPSG",
          "code": 8806
        }
      },
      {
        "name": "False northing",
        "value": 0,
        "unit": "metre",
        "id": {
          "authority": "EPSG",
          "code": 8807
        }
      }
    ]
  },
  "coordinate_system": {
    "subtype": "Cartesian",
    "axis": [
      {
        "name": "Easting",
        "abbreviation": "X",
        "direction": "east",
        "unit": "metre"
      },
      {
        "name": "Northing",
        "abbreviation": "Y",
        "direction": "north",
        "unit": "metre"
      }
    ]
  },
  "scope": "Web mapping and visualisation.",
  "area": "World between 85.06°S and 85.06°N.",
  "bbox": {
    "south_latitude": -85.06,
    "west_longitude": -180,
    "north_latitude": 85.06,
    "east_longitude": 180
  },
  "id": {
    "authority": "EPSG",
    "code": 3785
  }
}

{'crs_wkt': 'PROJCRS["Popular Visualisation CRS / '
            'Mercator",BASEGEOGCRS["Popular Visualisation CRS",DATUM["Popular '
            'Visualisation Datum",ELLIPSOID["Popular Visualisation '
            'Sphere",6378137,0,LENGTHUNIT["metre",1]]],PRIMEM["Greenwich",0,ANGLEUNIT["degree",0.0174532925199433]],ID["EPSG",4055]],CONVERSION["Popular '
            'Visualisation Mercator",METHOD["Mercator (1SP) '
            '(Spherical)",ID["EPSG",9841]],PARAMETER["Latitude of natural '
            'origin",0,ANGLEUNIT["degree",0.0174532925199433],ID["EPSG",8801]],PARAMETER["Longitude '
            'of natural '
            'origin",0,ANGLEUNIT["degree",0.0174532925199433],ID["EPSG",8802]],PARAMETER["Scale '
            'factor at natural '
            'origin",1,SCALEUNIT["unity",1],ID["EPSG",8805]],PARAMETER["False '
            'easting",0,LENGTHUNIT["metre",1],ID["EPSG",8806]],PARAMETER["False '
            'northing",0,LENGTHUNIT["metre",1],ID["EPSG",8807]]],CS[Cartesian,2],AXIS["easting '
            '(X)",east,ORDER[1],LENGTHUNIT["metre",1]],AXIS["northing '
            '(Y)",north,ORDER[2],LENGTHUNIT["metre",1]],USAGE[SCOPE["Web '
            'mapping and visualisation."],AREA["World between 85.06°S and '
            '85.06°N."],BBOX[-85.06,-180,85.06,180]],ID["EPSG",3785]]'}