NAD83(CSRS)v4 - EPSG:8246

WKT

GEOGCS["NAD83(CSRS)v4", 
	DATUM["North_American_Datum_of_1983_(CSRS)_version_4", 
		SPHEROID["GRS_1980", 6378137.0, 298.257222101]], 
	PRIMEM["Greenwich", 0.0], 
	UNIT["Degree", 0.0174532925199433]]

WKT2

GEOGCRS["NAD83(CSRS)v4", 
	DATUM["North_American_Datum_of_1983_(CSRS)_version_4", 
		ELLIPSOID["GRS_1980", 6378137.0, 298.257222101], 
		ANCHOREPOCH[2002.0]], 
	PRIMEM["Greenwich", 0.0], 
	CS[ellipsoidal, 2], 
	AXIS["Latitude (lat)", north, 
		ORDER[1]], 
	AXIS["Longitude (lon)", east, 
		ORDER[2]], 
	ANGLEUNIT["Degree", 0.0174532925199433], 
	ID["EPSG", "8246"]]

Data from @esri/proj-codes

{
  "wkid": 8246,
  "latestWkid": 8246,
  "macro": "PE_GCS_NAD_1983_CSRS_V4",
  "name": "NAD83(CSRS)v4",
  "wkt": "GEOGCS[\"NAD83(CSRS)v4\",DATUM[\"North_American_Datum_of_1983_(CSRS)_version_4\",SPHEROID[\"GRS_1980\",6378137.0,298.257222101]],PRIMEM[\"Greenwich\",0.0],UNIT[\"Degree\",0.0174532925199433]]",
  "wkt2": "GEOGCRS[\"NAD83(CSRS)v4\",DATUM[\"North_American_Datum_of_1983_(CSRS)_version_4\",ELLIPSOID[\"GRS_1980\",6378137.0,298.257222101],ANCHOREPOCH[2002.0]],PRIMEM[\"Greenwich\",0.0],CS[ellipsoidal,2],AXIS[\"Latitude (lat)\",north,ORDER[1]],AXIS[\"Longitude (lon)\",east,ORDER[2]],ANGLEUNIT[\"Degree\",0.0174532925199433],ID[\"EPSG\",\"8246\"]]",
  "description": "NAD83(CSRS)v4",
  "authority": "EPSG",
  "version": "9.1.1(10.6.0)",
  "deprecated": "no",
  "areaname": "Canada",
  "extent": {
    "slat": 38.21,
    "nlat": 86.46,
    "llon": -141.01,
    "rlon": -40.73
  }
}