IGNF:WGS84GDD.IGN69 - WGS84 geographiques (dd) et NGF-IGN 1969

{
  "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json",
  "type": "CompoundCRS",
  "name": "WGS84 geographiques (dd) et NGF-IGN 1969",
  "components": [
    {
      "type": "GeographicCRS",
      "name": "WGS84 geographiques (dd)",
      "datum_ensemble": {
        "name": "World Geodetic System 1984 ensemble",
        "members": [
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            "name": "World Geodetic System 1984 (Transit)",
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          {
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            }
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          {
            "name": "World Geodetic System 1984 (G1674)",
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          },
          {
            "name": "World Geodetic System 1984 (G1762)",
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            }
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          {
            "name": "World Geodetic System 1984 (G2139)",
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            }
          },
          {
            "name": "World Geodetic System 1984 (G2296)",
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            }
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        "accuracy": "2.0",
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        "axis": [
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            "name": "Geodetic longitude",
            "abbreviation": "Lon",
            "direction": "east",
            "unit": "degree"
          },
          {
            "name": "Geodetic latitude",
            "abbreviation": "Lat",
            "direction": "north",
            "unit": "degree"
          }
        ]
      }
    },
    {
      "type": "VerticalCRS",
      "name": "NGF-IGN 1969",
      "datum": {
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        "name": "NGF-IGN 1969"
      },
      "coordinate_system": {
        "subtype": "vertical",
        "axis": [
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            "name": "Gravity-related height",
            "abbreviation": "H",
            "direction": "up",
            "unit": "metre"
          }
        ]
      }
    }
  ],
  "scope": "NATIONALE",
  "area": "FRANCE CONTINENTALE (CORSE EXCLUE)",
  "bbox": {
    "south_latitude": 42,
    "west_longitude": -5.5,
    "north_latitude": 51.5,
    "east_longitude": 8.5
  },
  "id": {
    "authority": "IGNF",
    "code": "WGS84GDD.IGN69"
  }
}

{'crs_wkt': 'COMPOUNDCRS["WGS84 geographiques (dd) et NGF-IGN '
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 'geographic_crs_name': 'WGS84 geographiques (dd)',
 'geopotential_datum_name': 'NGF-IGN 1969',
 'grid_mapping_name': 'latitude_longitude',
 'horizontal_datum_name': 'World Geodetic System 1984 ensemble',
 'inverse_flattening': 298.257223563,
 'longitude_of_prime_meridian': 0.0,
 'prime_meridian_name': 'Greenwich',
 'reference_ellipsoid_name': 'WGS 84',
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 'semi_minor_axis': 6356752.314245179}