EPSG:9979

COORDINATEOPERATION["SIRGAS 1995 to SIRGAS 2000 (1)",
    VERSION["SIR-SAm 2021"],
    SOURCECRS[
        GEOGCRS["SIRGAS 1995",
            DATUM["Sistema de Referencia Geocentrico para America del Sur 1995",
                ELLIPSOID["GRS 1980",6378137,298.257222101,
                    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",4170]]],
    TARGETCRS[
        GEOGCRS["SIRGAS 2000",
            DATUM["Sistema de Referencia Geocentrico para las AmericaS 2000",
                ELLIPSOID["GRS 1980",6378137,298.257222101,
                    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",4674]]],
    METHOD["NTv2",
        ID["EPSG",9615]],
    PARAMETERFILE["Latitude and longitude difference file","SIRGAS1995-to-SIRGAS2000.gsb"],
    OPERATIONACCURACY[0.006],
    USAGE[
        SCOPE["Transformation of coordinates at 0.006m level of accuracy."],
        AREA["South America - onshore and offshore. Ecuador (mainland and Galapagos) - onshore and offshore."],
        BBOX[-59.87,-113.21,16.75,-26]],
    ID["EPSG",9979],
    REMARK["Derived at 48 stations."]]

proj4.defs("EPSG:9979","+proj=pipeline +step +proj=axisswap +order=2,1 +step +proj=unitconvert +xy_in=deg +xy_out=rad +step +proj=hgridshift +grids=SIRGAS1995-to-SIRGAS2000.gsb +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": "SIRGAS 1995 to SIRGAS 2000 (1)",
    "source_crs": {
        "type": "GeographicCRS",
        "name": "SIRGAS 1995",
        "datum": {
            "type": "GeodeticReferenceFrame",
            "name": "Sistema de Referencia Geocentrico para America del Sur 1995",
            "ellipsoid": {
                "name": "GRS 1980",
                "semi_major_axis": 6378137,
                "inverse_flattening": 298.257222101
            }
        },
        "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": 4170
        }
    },
    "target_crs": {
        "type": "GeographicCRS",
        "name": "SIRGAS 2000",
        "datum": {
            "type": "GeodeticReferenceFrame",
            "name": "Sistema de Referencia Geocentrico para las AmericaS 2000",
            "ellipsoid": {
                "name": "GRS 1980",
                "semi_major_axis": 6378137,
                "inverse_flattening": 298.257222101
            }
        },
        "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": 4674
        }
    },
    "method": {
        "name": "NTv2",
        "id": {
            "authority": "EPSG",
            "code": 9615
        }
    },
    "parameters": [
        {
            "name": "Latitude and longitude difference file",
            "value": "SIRGAS1995-to-SIRGAS2000.gsb",
            "id": {
                "authority": "EPSG",
                "code": 8656
            }
        }
    ],
    "accuracy": "0.006",
    "scope": "Transformation of coordinates at 0.006m level of accuracy.",
    "area": "South America - onshore and offshore. Ecuador (mainland and Galapagos) - onshore and offshore.",
    "bbox": {
        "south_latitude": -59.87,
        "west_longitude": -113.21,
        "north_latitude": 16.75,
        "east_longitude": -26
    },
    "id": {
        "authority": "EPSG",
        "code": 9979
    },
    "remarks": "Derived at 48 stations."
}

<?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=hgridshift +grids=SIRGAS1995-to-SIRGAS2000.gsb +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=hgridshift +grids=SIRGAS1995-to-SIRGAS2000.gsb +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 ( 9979, 'EPSG', 9979, '+proj=pipeline +step +proj=axisswap +order=2,1 +step +proj=unitconvert +xy_in=deg +xy_out=rad +step +proj=hgridshift +grids=SIRGAS1995-to-SIRGAS2000.gsb +step +proj=unitconvert +xy_in=rad +xy_out=deg +step +proj=axisswap +order=2,1', 'None');