EPSG:10660 - HD72 / EOV + EOMA 1980 height

{
  "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json",
  "type": "CompoundCRS",
  "name": "HD72 / EOV + EOMA 1980 height",
  "components": [
    {
      "type": "ProjectedCRS",
      "name": "HD72 / EOV",
      "base_crs": {
        "name": "HD72",
        "datum": {
          "type": "GeodeticReferenceFrame",
          "name": "Hungarian Datum 1972",
          "ellipsoid": {
            "name": "GRS 1967",
            "semi_major_axis": 6378160,
            "inverse_flattening": 298.247167427
          }
        },
        "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": 4237
        }
      },
      "conversion": {
        "name": "Egyseges Orszagos Vetuleti",
        "method": {
          "name": "Hotine Oblique Mercator (variant B)",
          "id": {
            "authority": "EPSG",
            "code": 9815
          }
        },
        "parameters": [
          {
            "name": "Latitude of projection centre",
            "value": 47.1443937222222,
            "unit": "degree",
            "id": {
              "authority": "EPSG",
              "code": 8811
            }
          },
          {
            "name": "Longitude of projection centre",
            "value": 19.0485717777778,
            "unit": "degree",
            "id": {
              "authority": "EPSG",
              "code": 8812
            }
          },
          {
            "name": "Azimuth at projection centre",
            "value": 90,
            "unit": "degree",
            "id": {
              "authority": "EPSG",
              "code": 8813
            }
          },
          {
            "name": "Angle from Rectified to Skew Grid",
            "value": 90,
            "unit": "degree",
            "id": {
              "authority": "EPSG",
              "code": 8814
            }
          },
          {
            "name": "Scale factor at projection centre",
            "value": 0.99993,
            "unit": "unity",
            "id": {
              "authority": "EPSG",
              "code": 8815
            }
          },
          {
            "name": "Easting at projection centre",
            "value": 650000,
            "unit": "metre",
            "id": {
              "authority": "EPSG",
              "code": 8816
            }
          },
          {
            "name": "Northing at projection centre",
            "value": 200000,
            "unit": "metre",
            "id": {
              "authority": "EPSG",
              "code": 8817
            }
          }
        ]
      },
      "coordinate_system": {
        "subtype": "Cartesian",
        "axis": [
          {
            "name": "Easting",
            "abbreviation": "Y",
            "direction": "east",
            "unit": "metre"
          },
          {
            "name": "Northing",
            "abbreviation": "X",
            "direction": "north",
            "unit": "metre"
          }
        ]
      }
    },
    {
      "type": "VerticalCRS",
      "name": "EOMA 1980 height",
      "datum": {
        "type": "VerticalReferenceFrame",
        "name": "Baltic 1980"
      },
      "coordinate_system": {
        "subtype": "vertical",
        "axis": [
          {
            "name": "Gravity-related height",
            "abbreviation": "H",
            "direction": "up",
            "unit": "metre"
          }
        ]
      }
    }
  ],
  "scope": "Cadastre, engineering survey, topographic mapping.",
  "area": "Hungary.",
  "bbox": {
    "south_latitude": 45.74,
    "west_longitude": 16.11,
    "north_latitude": 48.58,
    "east_longitude": 22.9
  },
  "id": {
    "authority": "EPSG",
    "code": 10660
  }
}

{'azimuth_of_central_line': 90.0,
 'crs_wkt': 'COMPOUNDCRS["HD72 / EOV + EOMA 1980 height",PROJCRS["HD72 / '
            'EOV",BASEGEOGCRS["HD72",DATUM["Hungarian Datum '
            '1972",ELLIPSOID["GRS '
            '1967",6378160,298.247167427,LENGTHUNIT["metre",1]]],PRIMEM["Greenwich",0,ANGLEUNIT["degree",0.0174532925199433]],ID["EPSG",4237]],CONVERSION["Egyseges '
            'Orszagos Vetuleti",METHOD["Hotine Oblique Mercator (variant '
            'B)",ID["EPSG",9815]],PARAMETER["Latitude of projection '
            'centre",47.1443937222222,ANGLEUNIT["degree",0.0174532925199433],ID["EPSG",8811]],PARAMETER["Longitude '
            'of projection '
            'centre",19.0485717777778,ANGLEUNIT["degree",0.0174532925199433],ID["EPSG",8812]],PARAMETER["Azimuth '
            'at projection '
            'centre",90,ANGLEUNIT["degree",0.0174532925199433],ID["EPSG",8813]],PARAMETER["Angle '
            'from Rectified to Skew '
            'Grid",90,ANGLEUNIT["degree",0.0174532925199433],ID["EPSG",8814]],PARAMETER["Scale '
            'factor at projection '
            'centre",0.99993,SCALEUNIT["unity",1],ID["EPSG",8815]],PARAMETER["Easting '
            'at projection '
            'centre",650000,LENGTHUNIT["metre",1],ID["EPSG",8816]],PARAMETER["Northing '
            'at projection '
            'centre",200000,LENGTHUNIT["metre",1],ID["EPSG",8817]]],CS[Cartesian,2],AXIS["easting '
            '(Y)",east,ORDER[1],LENGTHUNIT["metre",1]],AXIS["northing '
            '(X)",north,ORDER[2],LENGTHUNIT["metre",1]]],VERTCRS["EOMA 1980 '
            'height",VDATUM["Baltic '
            '1980"],CS[vertical,1],AXIS["gravity-related height '
            '(H)",up,LENGTHUNIT["metre",1]]],USAGE[SCOPE["Cadastre, '
            'engineering survey, topographic '
            'mapping."],AREA["Hungary."],BBOX[45.74,16.11,48.58,22.9]],ID["EPSG",10660]]',
 'false_easting': 650000.0,
 'false_northing': 200000.0,
 'geographic_crs_name': 'HD72',
 'geopotential_datum_name': 'Baltic 1980',
 'grid_mapping_name': 'oblique_mercator',
 'horizontal_datum_name': 'Hungarian Datum 1972',
 'inverse_flattening': 298.247167427,
 'latitude_of_projection_origin': 47.1443937222222,
 'longitude_of_prime_meridian': 0.0,
 'longitude_of_projection_origin': 19.0485717777778,
 'prime_meridian_name': 'Greenwich',
 'projected_crs_name': 'HD72 / EOV',
 'reference_ellipsoid_name': 'GRS 1967',
 'scale_factor_at_projection_origin': 0.99993,
 'semi_major_axis': 6378160.0,
 'semi_minor_axis': 6356774.516090714}