collections.json

{
  "links": [
    {
      "href": "http://data.example.com/buildings/123",
      "rel": "alternate",
      "type": "application/geo+json",
      "hreflang": "en",
      "title": "Trierer Strasse 70, 53115 Bonn",
      "length": 0
    }
  ],
  "collections": [
    {
      "id": "address",
      "title": "address",
      "description": "An address.",
      "links": [
        {
          "href": "http://data.example.com/buildings",
          "rel": "item"
        },
        {
          "href": "http://example.com/concepts/buildings.html",
          "rel": "describedBy",
          "type": "text/html"
        }
      ],
      "extent": {
        "spatial": {
          "bbox": [
            [
              -180,
              -90,
              180,
              90
            ]
          ],
          "crs": "http://www.opengis.net/def/crs/OGC/1.3/CRS84"
        },
        "temporal": {
          "interval": [
            [
              "2011-11-11T12:22:11Z",
              null
            ]
          ],
          "trs": "http://www.opengis.net/def/uom/ISO-8601/0/Gregorian"
        }
      },
      "itemType": "string",
      "crs": [
        "http://www.opengis.net/def/crs/OGC/1.3/CRS84",
        "http://www.opengis.net/def/crs/EPSG/0/4326"
      ]
    }
  ]
}