EPSG:11318

COMPD_CS["JGD2024 + JGD2024 (vertical) height",
    GEOGCS["JGD2024",
        DATUM["Japanese_Geodetic_Datum_2024",
            SPHEROID["GRS 1980",6378137,298.257222101,
                AUTHORITY["EPSG","7019"]],
            AUTHORITY["EPSG","1128"]],
        PRIMEM["Greenwich",0,
            AUTHORITY["EPSG","8901"]],
        UNIT["degree",0.0174532925199433,
            AUTHORITY["EPSG","9122"]],
        AUTHORITY["EPSG","6668"]],
    VERT_CS["JGD2024 (vertical) height",
        VERT_DATUM["Japanese Geodetic Datum 2024 (vertical)",2005,
            AUTHORITY["EPSG","1450"]],
        UNIT["metre",1,
            AUTHORITY["EPSG","9001"]],
        AXIS["Gravity-related height",UP],
        AUTHORITY["EPSG","11317"]],
    AUTHORITY["EPSG","11318"]]

COMPOUNDCRS["JGD2024 + JGD2024 (vertical) height",
    GEOGCRS["JGD2024",
        DATUM["Japanese Geodetic Datum 2024",
            ELLIPSOID["GRS 1980",6378137,298.257222101,
                LENGTHUNIT["metre",1]]],
        PRIMEM["Greenwich",0,
            ANGLEUNIT["degree",0.0174532925199433]],
        CS[ellipsoidal,2],
            AXIS["geodetic latitude (Lat)",north,
                ORDER[1],
                ANGLEUNIT["degree",0.0174532925199433]],
            AXIS["geodetic longitude (Lon)",east,
                ORDER[2],
                ANGLEUNIT["degree",0.0174532925199433]]],
    VERTCRS["JGD2024 (vertical) height",
        VDATUM["Japanese Geodetic Datum 2024 (vertical)",
            ANCHOREPOCH[2024.415]],
        CS[vertical,1],
            AXIS["gravity-related height (H)",up,
                LENGTHUNIT["metre",1]]],
    USAGE[
        SCOPE["Engineering survey, topographic mapping."],
        AREA["Japan - onshore and offshore."],
        BBOX[17.09,122.38,46.05,157.65]],
    ID["EPSG",11318]]

GEOGCS["GCS_JGD_2011",
    DATUM["D_JGD_2011",
        SPHEROID["GRS_1980",6378137.0,298.257222101]],
    PRIMEM["Greenwich",0.0],
    UNIT["Degree",0.0174532925199433]],
VERTCS["JGD2024_vertical_height",
    VDATUM["Japanese_Geodetic_Datum_2024_vertical"],
    PARAMETER["Vertical_Shift",0.0],
    PARAMETER["Direction",1.0],
    UNIT["Meter",1.0]]

proj4.defs("EPSG:11318","+proj=longlat +ellps=GRS80 +vunits=m +no_defs +type=crs");

{
    "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json",
    "type": "CompoundCRS",
    "name": "JGD2024 + JGD2024 (vertical) height",
    "components": [
        {
            "type": "GeographicCRS",
            "name": "JGD2024",
            "datum": {
                "type": "GeodeticReferenceFrame",
                "name": "Japanese Geodetic Datum 2024",
                "ellipsoid": {
                    "name": "GRS 1980",
                    "semi_major_axis": 6378137,
                    "inverse_flattening": 298.257222101
                }
            },
            "coordinate_system": {
                "subtype": "ellipsoidal",
                "axis": [
                    {
                        "name": "Geodetic latitude",
                        "abbreviation": "Lat",
                        "direction": "north",
                        "unit": "degree"
                    },
                    {
                        "name": "Geodetic longitude",
                        "abbreviation": "Lon",
                        "direction": "east",
                        "unit": "degree"
                    }
                ]
            },
            "remarks": "Replaces JGD2000 (CRS code 4612) with effect from 21st October 2011. On adoption of JGD2024 (vertical) with effect from 1st April 2025, the name of this geodetic CRS was changed from JGD2011 to JGD2024; there is no change of definition or of coordinate values."
        },
        {
            "type": "VerticalCRS",
            "name": "JGD2024 (vertical) height",
            "datum": {
                "type": "VerticalReferenceFrame",
                "name": "Japanese Geodetic Datum 2024 (vertical)",
                "anchor_epoch": 2024.415
            },
            "coordinate_system": {
                "subtype": "vertical",
                "axis": [
                    {
                        "name": "Gravity-related height",
                        "abbreviation": "H",
                        "direction": "up",
                        "unit": "metre"
                    }
                ]
            }
        }
    ],
    "scope": "Engineering survey, topographic mapping.",
    "area": "Japan - onshore and offshore.",
    "bbox": {
        "south_latitude": 17.09,
        "west_longitude": 122.38,
        "north_latitude": 46.05,
        "east_longitude": 157.65
    },
    "id": {
        "authority": "EPSG",
        "code": 11318
    }
}

<?xml version="1.0" encoding="utf-8"?>
<Map srs="+proj=longlat +ellps=GRS80 +vunits=m +no_defs +type=crs">
	<Layer srs="+proj=longlat +ellps=GRS80 +vunits=m +no_defs +type=crs">
	</Layer>
</Map>

INSERT into spatial_ref_sys (srid, auth_name, auth_srid, proj4text, srtext) values ( 11318, 'EPSG', 11318, '+proj=longlat +ellps=GRS80 +vunits=m +no_defs +type=crs', 'COMPD_CS["JGD2024 + JGD2024 (vertical) height",GEOGCS["JGD2024",DATUM["Japanese_Geodetic_Datum_2024",SPHEROID["GRS 1980",6378137,298.257222101,AUTHORITY["EPSG","7019"]],AUTHORITY["EPSG","1128"]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","6668"]],VERT_CS["JGD2024 (vertical) height",VERT_DATUM["Japanese Geodetic Datum 2024 (vertical)",2005,AUTHORITY["EPSG","1450"]],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AXIS["Gravity-related height",UP],AUTHORITY["EPSG","11317"]],AUTHORITY["EPSG","11318"]]');