ZH Portugal depth - EPSG:10349

WKT

VERTCS["ZH_Portugal_depth", 
	VDATUM["Chart_Datum_Portugal"], 
	PARAMETER["Vertical_Shift", 0.0], 
	PARAMETER["Direction", -1.0], 
	UNIT["Meter", 1.0]]

WKT2

VERTCRS["ZH_Portugal_depth", 
	VDATUM["Chart_Datum_Portugal"], 
	CS[vertical, 1], 
	AXIS["Gravity-related height (H)", down, 
		LENGTHUNIT["Meter", 1.0]], 
	ID["EPSG", "10349"]]

Data from @esri/proj-codes

{
  "wkid": 10349,
  "latestWkid": 10349,
  "macro": "PE_VCS_ZH_PORTUGAL_DEPTH",
  "name": "ZH_Portugal_depth",
  "wkt": "VERTCS[\"ZH_Portugal_depth\",VDATUM[\"Chart_Datum_Portugal\"],PARAMETER[\"Vertical_Shift\",0.0],PARAMETER[\"Direction\",-1.0],UNIT[\"Meter\",1.0]]",
  "wkt2": "VERTCRS[\"ZH_Portugal_depth\",VDATUM[\"Chart_Datum_Portugal\"],CS[vertical,1],AXIS[\"Gravity-related height (H)\",down,LENGTHUNIT[\"Meter\",1.0]],ID[\"EPSG\",\"10349\"]]",
  "description": "ZH Portugal depth",
  "authority": "EPSG",
  "version": "10.094(13.2.0)",
  "deprecated": "no",
  "areaname": "Portugal - offshore",
  "extent": {
    "slat": 29.24,
    "nlat": 43.07,
    "llon": -35.58,
    "rlon": -7.25
  }
}