EPSG:6888

COORDINATEOPERATION["Ocotepeque 1935 to NAD27 (1)",
    VERSION["DMA-Cri"],
    SOURCECRS[
        GEOGCRS["Ocotepeque 1935",
            DATUM["Ocotepeque 1935",
                ELLIPSOID["Clarke 1866",6378206.4,294.978698213898,
                    LENGTHUNIT["metre",1]]],
            PRIMEM["Greenwich",0,
                ANGLEUNIT["degree",0.0174532925199433]],
            CS[ellipsoidal,2],
                AXIS["geodetic latitude (Lat)",north,
                    ORDER[1],
                    ANGLEUNIT["degree",0.0174532925199433]],
                AXIS["geodetic longitude (Lon)",east,
                    ORDER[2],
                    ANGLEUNIT["degree",0.0174532925199433]],
            ID["EPSG",5451]]],
    TARGETCRS[
        GEOGCRS["NAD27",
            DATUM["North American Datum 1927",
                ELLIPSOID["Clarke 1866",6378206.4,294.978698213898,
                    LENGTHUNIT["metre",1]]],
            PRIMEM["Greenwich",0,
                ANGLEUNIT["degree",0.0174532925199433]],
            CS[ellipsoidal,2],
                AXIS["geodetic latitude (Lat)",north,
                    ORDER[1],
                    ANGLEUNIT["degree",0.0174532925199433]],
                AXIS["geodetic longitude (Lon)",east,
                    ORDER[2],
                    ANGLEUNIT["degree",0.0174532925199433]],
            ID["EPSG",4267]]],
    METHOD["Geocentric translations (geog2D domain)",
        ID["EPSG",9603]],
    PARAMETER["X-axis translation",205.435,
        LENGTHUNIT["metre",1],
        ID["EPSG",8605]],
    PARAMETER["Y-axis translation",-29.099,
        LENGTHUNIT["metre",1],
        ID["EPSG",8606]],
    PARAMETER["Z-axis translation",-292.202,
        LENGTHUNIT["metre",1],
        ID["EPSG",8607]],
    OPERATIONACCURACY[9.0],
    USAGE[
        SCOPE["Topographic mapping."],
        AREA["Costa Rica; El Salvador; Guatemala; Honduras; Nicaragua."],
        BBOX[7.98,-92.29,17.83,-82.53]],
    ID["EPSG",6888]]

proj4.defs("EPSG:6888","+proj=pipeline +step +proj=axisswap +order=2,1 +step +proj=unitconvert +xy_in=deg +xy_out=rad +step +proj=push +v_3 +step +proj=cart +ellps=clrk66 +step +proj=helmert +x=205.435 +y=-29.099 +z=-292.202 +step +inv +proj=cart +ellps=clrk66 +step +proj=pop +v_3 +step +proj=unitconvert +xy_in=rad +xy_out=deg +step +proj=axisswap +order=2,1");

{
    "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json",
    "type": "Transformation",
    "name": "Ocotepeque 1935 to NAD27 (1)",
    "source_crs": {
        "type": "GeographicCRS",
        "name": "Ocotepeque 1935",
        "datum": {
            "type": "GeodeticReferenceFrame",
            "name": "Ocotepeque 1935",
            "ellipsoid": {
                "name": "Clarke 1866",
                "semi_major_axis": 6378206.4,
                "semi_minor_axis": 6356583.8
            }
        },
        "coordinate_system": {
            "subtype": "ellipsoidal",
            "axis": [
                {
                    "name": "Geodetic latitude",
                    "abbreviation": "Lat",
                    "direction": "north",
                    "unit": "degree"
                },
                {
                    "name": "Geodetic longitude",
                    "abbreviation": "Lon",
                    "direction": "east",
                    "unit": "degree"
                }
            ]
        },
        "id": {
            "authority": "EPSG",
            "code": 5451
        },
        "remarks": "Replaced in Costa Rica by Costa Rica 2005 (CR05) from March 2007 and replaced in El Salvador by SIRGAS_ES2007 from August 2007."
    },
    "target_crs": {
        "type": "GeographicCRS",
        "name": "NAD27",
        "datum": {
            "type": "GeodeticReferenceFrame",
            "name": "North American Datum 1927",
            "ellipsoid": {
                "name": "Clarke 1866",
                "semi_major_axis": 6378206.4,
                "semi_minor_axis": 6356583.8
            }
        },
        "coordinate_system": {
            "subtype": "ellipsoidal",
            "axis": [
                {
                    "name": "Geodetic latitude",
                    "abbreviation": "Lat",
                    "direction": "north",
                    "unit": "degree"
                },
                {
                    "name": "Geodetic longitude",
                    "abbreviation": "Lon",
                    "direction": "east",
                    "unit": "degree"
                }
            ]
        },
        "id": {
            "authority": "EPSG",
            "code": 4267
        },
        "remarks": "Note: this CRS includes longitudes which are POSITIVE EAST. Replaced by NAD27(76) (code 4608) in Ontario, CGQ77 (code 4609) in Quebec, Mexican Datum of 1993 (code 4483) in Mexico, NAD83 (code 4269) in Canada (excl. Ontario & Quebec) & USA."
    },
    "method": {
        "name": "Geocentric translations (geog2D domain)",
        "id": {
            "authority": "EPSG",
            "code": 9603
        }
    },
    "parameters": [
        {
            "name": "X-axis translation",
            "value": 205.435,
            "unit": "metre",
            "id": {
                "authority": "EPSG",
                "code": 8605
            }
        },
        {
            "name": "Y-axis translation",
            "value": -29.099,
            "unit": "metre",
            "id": {
                "authority": "EPSG",
                "code": 8606
            }
        },
        {
            "name": "Z-axis translation",
            "value": -292.202,
            "unit": "metre",
            "id": {
                "authority": "EPSG",
                "code": 8607
            }
        }
    ],
    "accuracy": "9.0",
    "scope": "Topographic mapping.",
    "area": "Costa Rica; El Salvador; Guatemala; Honduras; Nicaragua.",
    "bbox": {
        "south_latitude": 7.98,
        "west_longitude": -92.29,
        "north_latitude": 17.83,
        "east_longitude": -82.53
    },
    "id": {
        "authority": "EPSG",
        "code": 6888
    }
}

<?xml version="1.0" encoding="utf-8"?>
<Map srs="+proj=pipeline +step +proj=axisswap +order=2,1 +step +proj=unitconvert +xy_in=deg +xy_out=rad +step +proj=push +v_3 +step +proj=cart +ellps=clrk66 +step +proj=helmert +x=205.435 +y=-29.099 +z=-292.202 +step +inv +proj=cart +ellps=clrk66 +step +proj=pop +v_3 +step +proj=unitconvert +xy_in=rad +xy_out=deg +step +proj=axisswap +order=2,1">
	<Layer srs="+proj=pipeline +step +proj=axisswap +order=2,1 +step +proj=unitconvert +xy_in=deg +xy_out=rad +step +proj=push +v_3 +step +proj=cart +ellps=clrk66 +step +proj=helmert +x=205.435 +y=-29.099 +z=-292.202 +step +inv +proj=cart +ellps=clrk66 +step +proj=pop +v_3 +step +proj=unitconvert +xy_in=rad +xy_out=deg +step +proj=axisswap +order=2,1">
	</Layer>
</Map>

INSERT into spatial_ref_sys (srid, auth_name, auth_srid, proj4text, srtext) values ( 6888, 'EPSG', 6888, '+proj=pipeline +step +proj=axisswap +order=2,1 +step +proj=unitconvert +xy_in=deg +xy_out=rad +step +proj=push +v_3 +step +proj=cart +ellps=clrk66 +step +proj=helmert +x=205.435 +y=-29.099 +z=-292.202 +step +inv +proj=cart +ellps=clrk66 +step +proj=pop +v_3 +step +proj=unitconvert +xy_in=rad +xy_out=deg +step +proj=axisswap +order=2,1', 'None');