GR96 EPSG Arctic zone 4-20 - EPSG:6056

WKT

PROJCS["GR96_EPSG_Arctic_zone_4-20", 
	GEOGCS["GCS_Greenland_1996", 
		DATUM["Greenland_Reference_1996_ensemble", 
			SPHEROID["GRS_1980", 6378137.0, 298.257222101]], 
		PRIMEM["Greenwich", 0.0], 
		UNIT["Degree", 0.0174532925199433]], 
	PROJECTION["Lambert_Conformal_Conic"], 
	PARAMETER["False_Easting", 20500000.0], 
	PARAMETER["False_Northing", 4500000.0], 
	PARAMETER["Central_Meridian", -64.0], 
	PARAMETER["Standard_Parallel_1", 73.66666666666669], 
	PARAMETER["Standard_Parallel_2", 77.0], 
	PARAMETER["Latitude_Of_Origin", 75.36440330555556], 
	UNIT["Meter", 1.0]]

WKT2

PROJCRS["GR96_EPSG_Arctic_zone_4-20", 
	BASEGEOGCRS["GCS_Greenland_1996", 
		DATUM["Greenland_Reference_1996_ensemble", 
			ELLIPSOID["GRS_1980", 6378137.0, 298.257222101]], 
		PRIMEM["Greenwich", 0.0], 
		CS[ellipsoidal, 2], 
		AXIS["Latitude (lat)", north, 
			ORDER[1]], 
		AXIS["Longitude (lon)", east, 
			ORDER[2]], 
		ANGLEUNIT["Degree", 0.0174532925199433]], 
	CONVERSION["Lambert_Conformal_Conic", 
		METHOD["Lambert_Conformal_Conic"], 
		PARAMETER["False_Easting", 20500000.0], 
		PARAMETER["False_Northing", 4500000.0], 
		PARAMETER["Central_Meridian", -64.0], 
		PARAMETER["Standard_Parallel_1", 73.66666666666669], 
		PARAMETER["Standard_Parallel_2", 77.0], 
		PARAMETER["Latitude_Of_Origin", 75.36440330555556]], 
	CS[Cartesian, 2], 
	AXIS["Easting (X)", east, 
		ORDER[1]], 
	AXIS["Northing (Y)", north, 
		ORDER[2]], 
	LENGTHUNIT["Meter", 1.0], 
	ID["EPSG", "6056"]]

Data from @esri/proj-codes

{
  "wkid": 6056,
  "latestWkid": 6056,
  "gcsWkid": 4747,
  "macro": "PE_PCS_GR96_EPSG_ARCTIC_4_20",
  "name": "GR96_EPSG_Arctic_zone_4-20",
  "wkt": "PROJCS[\"GR96_EPSG_Arctic_zone_4-20\",GEOGCS[\"GCS_Greenland_1996\",DATUM[\"Greenland_Reference_1996_ensemble\",SPHEROID[\"GRS_1980\",6378137.0,298.257222101]],PRIMEM[\"Greenwich\",0.0],UNIT[\"Degree\",0.0174532925199433]],PROJECTION[\"Lambert_Conformal_Conic\"],PARAMETER[\"False_Easting\",20500000.0],PARAMETER[\"False_Northing\",4500000.0],PARAMETER[\"Central_Meridian\",-64.0],PARAMETER[\"Standard_Parallel_1\",73.66666666666669],PARAMETER[\"Standard_Parallel_2\",77.0],PARAMETER[\"Latitude_Of_Origin\",75.36440330555556],UNIT[\"Meter\",1.0]]",
  "wkt2": "PROJCRS[\"GR96_EPSG_Arctic_zone_4-20\",BASEGEOGCRS[\"GCS_Greenland_1996\",DATUM[\"Greenland_Reference_1996_ensemble\",ELLIPSOID[\"GRS_1980\",6378137.0,298.257222101]],PRIMEM[\"Greenwich\",0.0],CS[ellipsoidal,2],AXIS[\"Latitude (lat)\",north,ORDER[1]],AXIS[\"Longitude (lon)\",east,ORDER[2]],ANGLEUNIT[\"Degree\",0.0174532925199433]],CONVERSION[\"Lambert_Conformal_Conic\",METHOD[\"Lambert_Conformal_Conic\"],PARAMETER[\"False_Easting\",20500000.0],PARAMETER[\"False_Northing\",4500000.0],PARAMETER[\"Central_Meridian\",-64.0],PARAMETER[\"Standard_Parallel_1\",73.66666666666669],PARAMETER[\"Standard_Parallel_2\",77.0],PARAMETER[\"Latitude_Of_Origin\",75.36440330555556]],CS[Cartesian,2],AXIS[\"Easting (X)\",east,ORDER[1]],AXIS[\"Northing (Y)\",north,ORDER[2]],LENGTHUNIT[\"Meter\",1.0],ID[\"EPSG\",\"6056\"]]",
  "description": "GR96 EPSG Arctic zone 4-20",
  "authority": "EPSG",
  "version": "8.2(10.2.1)",
  "deprecated": "no",
  "areaname": "Arctic - 77~50'N to 72~50'N, 76~W to 51~W",
  "extent": {
    "slat": 72.83,
    "nlat": 77.84,
    "llon": -76,
    "rlon": -51
  }
}