Get a list of Identifier objects. Idenfifiers have a 1..*:1 mapping with Observations.

### Available end points:

- `/identifier/` - Will list all Results in the database
- `/identifier.json` - Will return all Results in json format
- `/identifier/<object_id>/` - Returns Results object with that id

### Available Methods:

- `GET`
- `HEAD`

### Available filters:

- `url`
- `idenfifierType`

### How to use filters:



`/identifier/?url=mst`

`/identifier.json?identifierType=ceda_abbreviation`

GET /api/v2/identifiers/?format=api&offset=11100
HTTP 200 OK
Allow: GET, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

{
    "count": 11746,
    "next": "https://api.catalogue.ceda.ac.uk/api/v2/identifiers/?format=api&limit=100&offset=11200",
    "previous": "https://api.catalogue.ceda.ac.uk/api/v2/identifiers/?format=api&limit=100&offset=11000",
    "results": [
        {
            "ob_id": 13084,
            "relatedTo": {
                "ob_id": 41932,
                "uuid": "b2a2ef6d33ed4e188d33177b91677bcb",
                "short_code": "instr"
            },
            "url": "ncas-rain-gauge-3",
            "identifierType": "ceda_abbreviation",
            "shortUrl": ""
        },
        {
            "ob_id": 13085,
            "relatedTo": {
                "ob_id": 41933,
                "uuid": "8bc7eb60dcb14b44a1e5e534eb731c72",
                "short_code": "instr"
            },
            "url": "ncas-rain-gauge-4",
            "identifierType": "ceda_abbreviation",
            "shortUrl": ""
        },
        {
            "ob_id": 13086,
            "relatedTo": {
                "ob_id": 41934,
                "uuid": "f18c5eed137340d68a370eebcc7c1aa1",
                "short_code": "instr"
            },
            "url": "ncas-rain-gauge-5",
            "identifierType": "ceda_abbreviation",
            "shortUrl": ""
        },
        {
            "ob_id": 13087,
            "relatedTo": {
                "ob_id": 41935,
                "uuid": "ce84e87bcf41450cad8422a9d786f1a6",
                "short_code": "instr"
            },
            "url": "ncas-rain-gauge-6",
            "identifierType": "ceda_abbreviation",
            "shortUrl": ""
        },
        {
            "ob_id": 13088,
            "relatedTo": {
                "ob_id": 41936,
                "uuid": "5a39d3d7fb6f4ddab100f9d6fef5eccb",
                "short_code": "instr"
            },
            "url": "ncas-rain-gauge-7",
            "identifierType": "ceda_abbreviation",
            "shortUrl": ""
        },
        {
            "ob_id": 13089,
            "relatedTo": {
                "ob_id": 41937,
                "uuid": "e546dc3c4f6e44c8b0591f2c96f764c0",
                "short_code": "instr"
            },
            "url": "ncas-rapidsonde-1",
            "identifierType": "ceda_abbreviation",
            "shortUrl": ""
        },
        {
            "ob_id": 13090,
            "relatedTo": {
                "ob_id": 41938,
                "uuid": "e0de668c1a4e4b04a1e52a4aef0d4422",
                "short_code": "instr"
            },
            "url": "ncas-rapidsonde-2",
            "identifierType": "ceda_abbreviation",
            "shortUrl": ""
        },
        {
            "ob_id": 13091,
            "relatedTo": {
                "ob_id": 41939,
                "uuid": "846994dd13ce40eba4c051be0bd0b41d",
                "short_code": "instr"
            },
            "url": "ncas-ghg-gc-ecd-1",
            "identifierType": "ceda_abbreviation",
            "shortUrl": ""
        },
        {
            "ob_id": 13092,
            "relatedTo": {
                "ob_id": 41940,
                "uuid": "d19e322f9a064293b630e8e44734af2c",
                "short_code": "instr"
            },
            "url": "ncas-smps-1",
            "identifierType": "ceda_abbreviation",
            "shortUrl": ""
        },
        {
            "ob_id": 13093,
            "relatedTo": {
                "ob_id": 41941,
                "uuid": "dce1fbf0f5d74430830158a4964a2ea7",
                "short_code": "instr"
            },
            "url": "ncas-smps-2",
            "identifierType": "ceda_abbreviation",
            "shortUrl": ""
        },
        {
            "ob_id": 13094,
            "relatedTo": {
                "ob_id": 41942,
                "uuid": "1b486193bc5f4276b3f1f20f0d1d3d6b",
                "short_code": "instr"
            },
            "url": "ncas-smps-3",
            "identifierType": "ceda_abbreviation",
            "shortUrl": ""
        },
        {
            "ob_id": 13095,
            "relatedTo": {
                "ob_id": 41943,
                "uuid": "9aa1b0b8948942bd81f4f0322b0eaa3f",
                "short_code": "instr"
            },
            "url": "ncas-smps-4",
            "identifierType": "ceda_abbreviation",
            "shortUrl": ""
        },
        {
            "ob_id": 13096,
            "relatedTo": {
                "ob_id": 41944,
                "uuid": "de86a2b85912431f87da9747b3e6373a",
                "short_code": "instr"
            },
            "url": "ncas-smps-5",
            "identifierType": "ceda_abbreviation",
            "shortUrl": ""
        },
        {
            "ob_id": 13097,
            "relatedTo": {
                "ob_id": 41945,
                "uuid": "80371c0bbb094b97b329af92e2f93a3e",
                "short_code": "instr"
            },
            "url": "ncas-43i-so2-2",
            "identifierType": "ceda_abbreviation",
            "shortUrl": ""
        },
        {
            "ob_id": 13098,
            "relatedTo": {
                "ob_id": 41946,
                "uuid": "789cee9b21c748f795d6e1f93a9d9ffb",
                "short_code": "instr"
            },
            "url": "ncas-sodar-2",
            "identifierType": "ceda_abbreviation",
            "shortUrl": ""
        },
        {
            "ob_id": 13099,
            "relatedTo": {
                "ob_id": 41947,
                "uuid": "43a614699938466796591ddb8d3ad296",
                "short_code": "instr"
            },
            "url": "ncas-sodar-3",
            "identifierType": "ceda_abbreviation",
            "shortUrl": ""
        },
        {
            "ob_id": 13100,
            "relatedTo": {
                "ob_id": 41948,
                "uuid": "b858ff05285944a9a60bc05b433d8921",
                "short_code": "instr"
            },
            "url": "ncas-spectral-radiometer-2",
            "identifierType": "ceda_abbreviation",
            "shortUrl": ""
        },
        {
            "ob_id": 13101,
            "relatedTo": {
                "ob_id": 41949,
                "uuid": "0c2a598abdff433f9186574700468653",
                "short_code": "instr"
            },
            "url": "ncas-spectral-radiometer-1",
            "identifierType": "ceda_abbreviation",
            "shortUrl": ""
        },
        {
            "ob_id": 13102,
            "relatedTo": {
                "ob_id": 41950,
                "uuid": "2d1252f2abd44d41a61aeb25ad64055e",
                "short_code": "instr"
            },
            "url": "ncas-spectral-radiometer-3",
            "identifierType": "ceda_abbreviation",
            "shortUrl": ""
        },
        {
            "ob_id": 13103,
            "relatedTo": {
                "ob_id": 41951,
                "uuid": "c7d70192620848bb8714d4f6c1aa8485",
                "short_code": "instr"
            },
            "url": "ncas-sunphotometer-1",
            "identifierType": "ceda_abbreviation",
            "shortUrl": ""
        },
        {
            "ob_id": 13104,
            "relatedTo": {
                "ob_id": 41952,
                "uuid": "446a24717b304ec6b20da16714ebfcd3",
                "short_code": "instr"
            },
            "url": "ncas-sunphotometer-2",
            "identifierType": "ceda_abbreviation",
            "shortUrl": ""
        },
        {
            "ob_id": 13105,
            "relatedTo": {
                "ob_id": 41953,
                "uuid": "ddd79d098f0841aa86dce6e6ae7faa43",
                "short_code": "instr"
            },
            "url": "ncas-sunphotometer-3",
            "identifierType": "ceda_abbreviation",
            "shortUrl": ""
        },
        {
            "ob_id": 13106,
            "relatedTo": {
                "ob_id": 41954,
                "uuid": "34963f91f0a34f6397c565e7f2a98ca6",
                "short_code": "instr"
            },
            "url": "ncas-sunphotometer-4",
            "identifierType": "ceda_abbreviation",
            "shortUrl": ""
        },
        {
            "ob_id": 13107,
            "relatedTo": {
                "ob_id": 41955,
                "uuid": "991c902b1b2c41f9899290aa69925f89",
                "short_code": "instr"
            },
            "url": "ncas-temperature-rh-1",
            "identifierType": "ceda_abbreviation",
            "shortUrl": ""
        },
        {
            "ob_id": 13108,
            "relatedTo": {
                "ob_id": 41956,
                "uuid": "ba8f9005e2574979a6426ede621631c7",
                "short_code": "instr"
            },
            "url": "ncas-radar-x-band-2",
            "identifierType": "ceda_abbreviation",
            "shortUrl": ""
        },
        {
            "ob_id": 13109,
            "relatedTo": {
                "ob_id": 41846,
                "uuid": "1c4efcbf5b414e3a9768bbc6bed83063",
                "short_code": "instr"
            },
            "url": "uom-3321aps-1",
            "identifierType": "ceda_abbreviation",
            "shortUrl": ""
        },
        {
            "ob_id": 13110,
            "relatedTo": {
                "ob_id": 41847,
                "uuid": "e8568ffba5ec41e6bd40a0288cba87a6",
                "short_code": "instr"
            },
            "url": "uom-3321aps-2",
            "identifierType": "ceda_abbreviation",
            "shortUrl": ""
        },
        {
            "ob_id": 13111,
            "relatedTo": {
                "ob_id": 41869,
                "uuid": "7b2d137c4b1945f5a955478bdea2e102",
                "short_code": "instr"
            },
            "url": "wao-rga",
            "identifierType": "ceda_abbreviation",
            "shortUrl": ""
        },
        {
            "ob_id": 13112,
            "relatedTo": {
                "ob_id": 41870,
                "uuid": "a153d3ee320f4b3f814031e8882e49f6",
                "short_code": "instr"
            },
            "url": "wao-CO2",
            "identifierType": "ceda_abbreviation",
            "shortUrl": ""
        },
        {
            "ob_id": 13113,
            "relatedTo": {
                "ob_id": 41871,
                "uuid": "152b067b4172413583b98089d21e55a2",
                "short_code": "instr"
            },
            "url": "uom-3010cpc-1",
            "identifierType": "ceda_abbreviation",
            "shortUrl": ""
        },
        {
            "ob_id": 13114,
            "relatedTo": {
                "ob_id": 41872,
                "uuid": "0f52b23ce6f042a185830033ce438e90",
                "short_code": "instr"
            },
            "url": "uom-3010cpc-2",
            "identifierType": "ceda_abbreviation",
            "shortUrl": ""
        },
        {
            "ob_id": 13115,
            "relatedTo": {
                "ob_id": 41899,
                "uuid": "a2da48da160945d5a56318e25481ed4f",
                "short_code": "instr"
            },
            "url": "cfarr-lidar-uv_chilbolton",
            "identifierType": "ceda_abbreviation",
            "shortUrl": ""
        },
        {
            "ob_id": 13116,
            "relatedTo": {
                "ob_id": 41939,
                "uuid": "846994dd13ce40eba4c051be0bd0b41d",
                "short_code": "instr"
            },
            "url": "wao-ghg-gc-ecd",
            "identifierType": "ceda_abbreviation",
            "shortUrl": ""
        },
        {
            "ob_id": 13117,
            "relatedTo": {
                "ob_id": 41940,
                "uuid": "d19e322f9a064293b630e8e44734af2c",
                "short_code": "instr"
            },
            "url": "man-smps-1",
            "identifierType": "ceda_abbreviation",
            "shortUrl": ""
        },
        {
            "ob_id": 13118,
            "relatedTo": {
                "ob_id": 41941,
                "uuid": "dce1fbf0f5d74430830158a4964a2ea7",
                "short_code": "instr"
            },
            "url": "man-smps-2",
            "identifierType": "ceda_abbreviation",
            "shortUrl": ""
        },
        {
            "ob_id": 13119,
            "relatedTo": {
                "ob_id": 41946,
                "uuid": "789cee9b21c748f795d6e1f93a9d9ffb",
                "short_code": "instr"
            },
            "url": "leeds-sodar-unit2",
            "identifierType": "ceda_abbreviation",
            "shortUrl": ""
        },
        {
            "ob_id": 13120,
            "relatedTo": {
                "ob_id": 41947,
                "uuid": "43a614699938466796591ddb8d3ad296",
                "short_code": "instr"
            },
            "url": "leeds-sodar-unit3",
            "identifierType": "ceda_abbreviation",
            "shortUrl": ""
        },
        {
            "ob_id": 13121,
            "relatedTo": {
                "ob_id": 41948,
                "uuid": "b858ff05285944a9a60bc05b433d8921",
                "short_code": "instr"
            },
            "url": "cv-specrad",
            "identifierType": "ceda_abbreviation",
            "shortUrl": ""
        },
        {
            "ob_id": 13122,
            "relatedTo": {
                "ob_id": 41916,
                "uuid": "5c04ba020d044609be30042d41ac2f23",
                "short_code": "instr"
            },
            "url": "wao-O2",
            "identifierType": "ceda_abbreviation",
            "shortUrl": ""
        },
        {
            "ob_id": 13123,
            "relatedTo": {
                "ob_id": 41870,
                "uuid": "a153d3ee320f4b3f814031e8882e49f6",
                "short_code": "instr"
            },
            "url": "wao-siemens-oxzilla",
            "identifierType": "ceda_abbreviation",
            "shortUrl": ""
        },
        {
            "ob_id": 13124,
            "relatedTo": {
                "ob_id": 24927,
                "uuid": "a8aa0f0e0a0745eb900bd41c37592212",
                "short_code": "plat"
            },
            "url": "oden",
            "identifierType": "ceda_abbreviation",
            "shortUrl": ""
        },
        {
            "ob_id": 13125,
            "relatedTo": {
                "ob_id": 2409,
                "uuid": "8b8909b3c6fb4b5697fd26cd93e5ac9b",
                "short_code": "plat"
            },
            "url": "cardington",
            "identifierType": "ceda_abbreviation",
            "shortUrl": ""
        },
        {
            "ob_id": 13127,
            "relatedTo": {
                "ob_id": 41769,
                "uuid": "2fdc37a517b54376ba19d5c7432457d5",
                "short_code": "ob"
            },
            "url": "https://dx.doi.org/10.5285/2fdc37a517b54376ba19d5c7432457d5",
            "identifierType": "doi",
            "shortUrl": ""
        },
        {
            "ob_id": 13128,
            "relatedTo": {
                "ob_id": 41766,
                "uuid": "1de7b50d827b4b4f966bd4e3ec5516ea",
                "short_code": "ob"
            },
            "url": "https://dx.doi.org/10.5285/1de7b50d827b4b4f966bd4e3ec5516ea",
            "identifierType": "doi",
            "shortUrl": "https://doi.org/10/gtzkk8"
        },
        {
            "ob_id": 13129,
            "relatedTo": {
                "ob_id": 41768,
                "uuid": "c844fc58615a422aa2e7d2fc8bd8cccf",
                "short_code": "ob"
            },
            "url": "https://dx.doi.org/10.5285/c844fc58615a422aa2e7d2fc8bd8cccf",
            "identifierType": "doi",
            "shortUrl": "https://doi.org/10/gtzknt"
        },
        {
            "ob_id": 13130,
            "relatedTo": {
                "ob_id": 41535,
                "uuid": "95aa41439d564756950f89921b6ef215",
                "short_code": "ob"
            },
            "url": "https://dx.doi.org/10.5285/95aa41439d564756950f89921b6ef215",
            "identifierType": "doi",
            "shortUrl": "https://doi.org/10/gtzkq2"
        },
        {
            "ob_id": 13134,
            "relatedTo": {
                "ob_id": 6289,
                "uuid": "8a223610f56e7352ebdc19a31f836ea3",
                "short_code": "proj"
            },
            "url": "microscope",
            "identifierType": "ceda_abbreviation",
            "shortUrl": ""
        },
        {
            "ob_id": 13135,
            "relatedTo": {
                "ob_id": 42539,
                "uuid": "36ce07afe4944444878ec69cd3e70a13",
                "short_code": "plat"
            },
            "url": "availade",
            "identifierType": "ceda_abbreviation",
            "shortUrl": ""
        },
        {
            "ob_id": 13137,
            "relatedTo": {
                "ob_id": 42575,
                "uuid": "f3fe238d2d4b4f6d9577db9aafb4ad52",
                "short_code": "proj"
            },
            "url": "perdigao",
            "identifierType": "ceda_abbreviation",
            "shortUrl": ""
        },
        {
            "ob_id": 13138,
            "relatedTo": {
                "ob_id": 42675,
                "uuid": "0db8806517aa4df7a7b3eef9261d334f",
                "short_code": "proj"
            },
            "url": "moccha",
            "identifierType": "ceda_abbreviation",
            "shortUrl": ""
        },
        {
            "ob_id": 13139,
            "relatedTo": {
                "ob_id": 43010,
                "uuid": "a2fe61d9744c4c83a00ac85b09bae0ee",
                "short_code": "proj"
            },
            "url": "NE/T001801/2",
            "identifierType": "ceda_abbreviation",
            "shortUrl": ""
        },
        {
            "ob_id": 13140,
            "relatedTo": {
                "ob_id": 41207,
                "uuid": "b94cbe2ae4bf45cfa8dc58e98170c07c",
                "short_code": "ob"
            },
            "url": "https://dx.doi.org/10.5285/b94cbe2ae4bf45cfa8dc58e98170c07c",
            "identifierType": "doi",
            "shortUrl": "https://doi.org/10/gtz8pn"
        },
        {
            "ob_id": 13141,
            "relatedTo": {
                "ob_id": 41533,
                "uuid": "7545a606606c4e9bb6139dfc21a95264",
                "short_code": "ob"
            },
            "url": "https://dx.doi.org/10.5285/7545a606606c4e9bb6139dfc21a95264",
            "identifierType": "doi",
            "shortUrl": "https://doi.org/10/gtz8nx"
        },
        {
            "ob_id": 13142,
            "relatedTo": {
                "ob_id": 43020,
                "uuid": "a66447dd099c4320b67c2a8f9458b27a",
                "short_code": "ob"
            },
            "url": "http://dx.doi.org/10.5285/1671e9c4-74e9-41ba-e063-6c86abc0609a",
            "identifierType": "doi",
            "shortUrl": "https://doi.org/10/gtz842"
        },
        {
            "ob_id": 13143,
            "relatedTo": {
                "ob_id": 43022,
                "uuid": "6eb1d162644f484eaff82e2e8f96fc99",
                "short_code": "ob"
            },
            "url": "http://dx.doi.org/10.5285/1671ebc4-ab81-435b-e063-6c86abc06b9d",
            "identifierType": "doi",
            "shortUrl": "https://doi.org/10/gtz843"
        },
        {
            "ob_id": 13144,
            "relatedTo": {
                "ob_id": 43024,
                "uuid": "074f29828a0447aaabc813e5cfeaa34f",
                "short_code": "ob"
            },
            "url": "http://dx.doi.org/10.5285/1671f12e-b07b-4804-e063-6c86abc0544b",
            "identifierType": "doi",
            "shortUrl": "https://doi.org/10/gtz844"
        },
        {
            "ob_id": 13145,
            "relatedTo": {
                "ob_id": 43026,
                "uuid": "8d7f2727efee45d88544608e2c7bf20d",
                "short_code": "ob"
            },
            "url": "http://dx.doi.org/10.5285/19ab429a-b365-d9e9-e063-7086abc0c066",
            "identifierType": "doi",
            "shortUrl": "https://doi.org/10/gtz846"
        },
        {
            "ob_id": 13146,
            "relatedTo": {
                "ob_id": 41767,
                "uuid": "0a36ca390a5844578905780ed4c78ded",
                "short_code": "ob"
            },
            "url": "https://dx.doi.org/10.5285/0a36ca390a5844578905780ed4c78ded",
            "identifierType": "doi",
            "shortUrl": "https://doi.org/10/g9kpf3"
        },
        {
            "ob_id": 13147,
            "relatedTo": {
                "ob_id": 43052,
                "uuid": "5e48b31e413b480792e4156191b654f4",
                "short_code": "ob"
            },
            "url": "https://dx.doi.org/10.5285/5e48b31e413b480792e4156191b654f4",
            "identifierType": "doi",
            "shortUrl": ""
        },
        {
            "ob_id": 13148,
            "relatedTo": {
                "ob_id": 42322,
                "uuid": "5ba67d62cdc249a3bc5b1c38b339beb3",
                "short_code": "ob"
            },
            "url": "https://dx.doi.org/10.5285/5ba67d62cdc249a3bc5b1c38b339beb3",
            "identifierType": "doi",
            "shortUrl": "https://doi.org/10/gvq49q"
        },
        {
            "ob_id": 13149,
            "relatedTo": {
                "ob_id": 42321,
                "uuid": "c22d0b462321447882d2d1367cc77d3c",
                "short_code": "ob"
            },
            "url": "https://dx.doi.org/10.5285/c22d0b462321447882d2d1367cc77d3c",
            "identifierType": "doi",
            "shortUrl": "https://doi.org/10/gvq5bs"
        },
        {
            "ob_id": 13150,
            "relatedTo": {
                "ob_id": 42323,
                "uuid": "18ddbb686be549bfadfecbe0c673f405",
                "short_code": "ob"
            },
            "url": "https://dx.doi.org/10.5285/18ddbb686be549bfadfecbe0c673f405",
            "identifierType": "doi",
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