EPSG:20035 — CGVD2013a(1997) height

VERTCRS[
    "CGVD2013a(1997) height",
    VDATUM[
        "Canadian Geodetic Vertical Datum of 2013 (CGG2013a) epoch 1997",
        ANCHOREPOCH[1997],
        ID["EPSG",1326]
    ],
    CS[vertical,1,ID["EPSG",6499]],
    AXIS["Gravity-related height (H)",up],
    LENGTHUNIT["metre",1,ID["EPSG",9001]],
    ID["EPSG",20035]
]

+vunits=m +no_defs +type=crs

proj4.defs("EPSG:20035", "+vunits=m +no_defs +type=crs");

{
  "type": "CoordinateReferenceSystem",
  "code": 20035,
  "name": "CGVD2013a(1997) height",
  "kind": "vertical",
  "area": "Canada",
  "unit": "metre",
  "bbox": [
    38.21,
    -141.01,
    86.46,
    -40.73
  ],
  "proj4": "+vunits=m +no_defs +type=crs"
}

INSERT INTO spatial_ref_sys (srid, auth_name, auth_srid, proj4text, srtext)
VALUES (20035, 'EPSG', 20035, '+vunits=m +no_defs +type=crs', 'VERT_CS["CGVD2013a(1997) height",VERT_DATUM["Canadian Geodetic Vertical Datum of 2013 (CGG2013a) epoch 1997",2005,AUTHORITY["EPSG","1326"]],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AXIS["Gravity-related height",UP],AUTHORITY["EPSG","20035"]]');

PROJECTION
  "+vunits=m"
  "+no_defs"
  "+type=crs"
END

20035=VERT_CS["CGVD2013a(1997) height",VERT_DATUM["Canadian Geodetic Vertical Datum of 2013 (CGG2013a) epoch 1997",2005,AUTHORITY["EPSG","1326"]],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AXIS["Gravity-related height",UP],AUTHORITY["EPSG","20035"]]