BSCD2000 depth - EPSG:10678

WKT

VERTCS["BSCD2000_depth", 
	VDATUM["Baltic_Sea_Chart_Datum_2000"], 
	PARAMETER["Vertical_Shift", 0.0], 
	PARAMETER["Direction", -1.0], 
	UNIT["Meter", 1.0]]

WKT2

VERTCRS["BSCD2000_depth", 
	VDATUM["Baltic_Sea_Chart_Datum_2000"], 
	CS[vertical, 1], 
	AXIS["Gravity-related height (H)", down, 
		LENGTHUNIT["Meter", 1.0]], 
	ID["EPSG", "10678"]]

Data from @esri/proj-codes

{
  "wkid": 10678,
  "latestWkid": 10678,
  "macro": "PE_VCS_BSCD2000_DEPTH",
  "name": "BSCD2000_depth",
  "wkt": "VERTCS[\"BSCD2000_depth\",VDATUM[\"Baltic_Sea_Chart_Datum_2000\"],PARAMETER[\"Vertical_Shift\",0.0],PARAMETER[\"Direction\",-1.0],UNIT[\"Meter\",1.0]]",
  "wkt2": "VERTCRS[\"BSCD2000_depth\",VDATUM[\"Baltic_Sea_Chart_Datum_2000\"],CS[vertical,1],AXIS[\"Gravity-related height (H)\",down,LENGTHUNIT[\"Meter\",1.0]],ID[\"EPSG\",\"10678\"]]",
  "description": "BSCD2000 depth",
  "authority": "EPSG",
  "version": "11.018(13.5.0)",
  "deprecated": "no",
  "areaname": "Europe - Baltic Sea",
  "extent": {
    "slat": 53.88,
    "nlat": 65.92,
    "llon": 8.5,
    "rlon": 30.23
  }
}