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=8200
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=8300",
    "previous": "https://api.catalogue.ceda.ac.uk/api/v2/identifiers/?format=api&limit=100&offset=8100",
    "results": [
        {
            "ob_id": 9402,
            "relatedTo": {
                "ob_id": 24486,
                "uuid": "92db4bc800364593b6976f202be8e3c3",
                "short_code": "ob"
            },
            "url": "http://dx.doi.org/10.5285/92db4bc800364593b6976f202be8e3c3",
            "identifierType": "doi",
            "shortUrl": "https://doi.org/10/gcsmbx"
        },
        {
            "ob_id": 9403,
            "relatedTo": {
                "ob_id": 24490,
                "uuid": "f397245723e346d5b1f932cb617f0ddd",
                "short_code": "ob"
            },
            "url": "http://dx.doi.org/10.5285/f397245723e346d5b1f932cb617f0ddd",
            "identifierType": "doi",
            "shortUrl": "https://doi.org/10/gcsmbz"
        },
        {
            "ob_id": 9404,
            "relatedTo": {
                "ob_id": 24410,
                "uuid": "5713bc205dbc4a87b30d4a0189598260",
                "short_code": "ob"
            },
            "url": "http://dx.doi.org/10.5285/5713bc205dbc4a87b30d4a0189598260",
            "identifierType": "doi",
            "shortUrl": "http://doi.org/10/gcsmb2"
        },
        {
            "ob_id": 9405,
            "relatedTo": {
                "ob_id": 24405,
                "uuid": "fc62352a78874c10b7bed5d682ead39e",
                "short_code": "ob"
            },
            "url": "http://dx.doi.org/10.5285/fc62352a78874c10b7bed5d682ead39e",
            "identifierType": "doi",
            "shortUrl": "http://doi.org/10/gcsmb3"
        },
        {
            "ob_id": 9406,
            "relatedTo": {
                "ob_id": 24414,
                "uuid": "58c2847b44c1408e877858b265813ee9",
                "short_code": "ob"
            },
            "url": "http://dx.doi.org/10.5285/58c2847b44c1408e877858b265813ee9",
            "identifierType": "doi",
            "shortUrl": "http://doi.org/10/gcvj6b"
        },
        {
            "ob_id": 9407,
            "relatedTo": {
                "ob_id": 24418,
                "uuid": "47107d89764b4d30843dfbe44fed3d12",
                "short_code": "ob"
            },
            "url": "http://dx.doi.org/10.5285/47107d89764b4d30843dfbe44fed3d12",
            "identifierType": "doi",
            "shortUrl": "http://doi.org/10/gcsmb4"
        },
        {
            "ob_id": 9408,
            "relatedTo": {
                "ob_id": 24126,
                "uuid": "0a91400f0b17492e8a0c3cd03bc45e61",
                "short_code": "ob"
            },
            "url": "http://dx.doi.org/10.5285/0a91400f0b17492e8a0c3cd03bc45e61",
            "identifierType": "doi",
            "shortUrl": "https://doi.org/10/gcvj6c"
        },
        {
            "ob_id": 9409,
            "relatedTo": {
                "ob_id": 24131,
                "uuid": "fd5602b951954a509f4a36999209f11f",
                "short_code": "ob"
            },
            "url": "http://dx.doi.org/10.5285/fd5602b951954a509f4a36999209f11f",
            "identifierType": "doi",
            "shortUrl": "https://doi.org/10/gcsmb5"
        },
        {
            "ob_id": 9410,
            "relatedTo": {
                "ob_id": 24135,
                "uuid": "d22ce042293d4433ad0157dc73c3a159",
                "short_code": "ob"
            },
            "url": "http://dx.doi.org/10.5285/d22ce042293d4433ad0157dc73c3a159",
            "identifierType": "doi",
            "shortUrl": "https://doi.org/10/gcsmb6"
        },
        {
            "ob_id": 9411,
            "relatedTo": {
                "ob_id": 24139,
                "uuid": "89e8e254ed874c1cb446e034de9b625b",
                "short_code": "ob"
            },
            "url": "http://dx.doi.org/10.5285/89e8e254ed874c1cb446e034de9b625b",
            "identifierType": "doi",
            "shortUrl": "https://doi.org/10/gcsmb7"
        },
        {
            "ob_id": 9412,
            "relatedTo": {
                "ob_id": 24144,
                "uuid": "4f60145751f1405db542dcdb980ed8c3",
                "short_code": "ob"
            },
            "url": "http://dx.doi.org/10.5285/4f60145751f1405db542dcdb980ed8c3",
            "identifierType": "doi",
            "shortUrl": "https://doi.org/10/gcvj6d"
        },
        {
            "ob_id": 9413,
            "relatedTo": {
                "ob_id": 24148,
                "uuid": "fffb5f22c41d48899603933a7a0bc01f",
                "short_code": "ob"
            },
            "url": "http://dx.doi.org/10.5285/fffb5f22c41d48899603933a7a0bc01f",
            "identifierType": "doi",
            "shortUrl": "https://doi.org/10/gcvj6f"
        },
        {
            "ob_id": 9414,
            "relatedTo": {
                "ob_id": 24354,
                "uuid": "2cc63c1501594226ad176e1aa958d299",
                "short_code": "ob"
            },
            "url": "http://dx.doi.org/10.5285/2cc63c1501594226ad176e1aa958d299",
            "identifierType": "doi",
            "shortUrl": "http://doi.org/10/gcsmb8"
        },
        {
            "ob_id": 9415,
            "relatedTo": {
                "ob_id": 24365,
                "uuid": "dcf8fa7420084d8fb6d6d47d53c44b0e",
                "short_code": "ob"
            },
            "url": "http://dx.doi.org/10.5285/dcf8fa7420084d8fb6d6d47d53c44b0e",
            "identifierType": "doi",
            "shortUrl": "https://doi.org/10/gcsmb9"
        },
        {
            "ob_id": 9416,
            "relatedTo": {
                "ob_id": 24152,
                "uuid": "419e4e90b66d4ba3922ccf26086ff4df",
                "short_code": "ob"
            },
            "url": "http://dx.doi.org/10.5285/419e4e90b66d4ba3922ccf26086ff4df",
            "identifierType": "doi",
            "shortUrl": "http://doi.org/10/gcvj6g"
        },
        {
            "ob_id": 9417,
            "relatedTo": {
                "ob_id": 24157,
                "uuid": "84bdf45a643344c18956727353d12912",
                "short_code": "ob"
            },
            "url": "http://dx.doi.org/10.5285/84bdf45a643344c18956727353d12912",
            "identifierType": "doi",
            "shortUrl": "http://doi.org/10/gcvj6h"
        },
        {
            "ob_id": 9418,
            "relatedTo": {
                "ob_id": 24161,
                "uuid": "de2051db0a78492f85e3f0fc6a754d06",
                "short_code": "ob"
            },
            "url": "http://dx.doi.org/10.5285/de2051db0a78492f85e3f0fc6a754d06",
            "identifierType": "doi",
            "shortUrl": "http://doi.org/10/gcvj6j"
        },
        {
            "ob_id": 9419,
            "relatedTo": {
                "ob_id": 24165,
                "uuid": "18366cc440934e1cb98181ea83124377",
                "short_code": "ob"
            },
            "url": "http://dx.doi.org/10.5285/18366cc440934e1cb98181ea83124377",
            "identifierType": "doi",
            "shortUrl": "http://doi.org/10/gcvj6k"
        },
        {
            "ob_id": 9420,
            "relatedTo": {
                "ob_id": 24169,
                "uuid": "ccb3fd15fbf24d00962ef2f513645b8f",
                "short_code": "ob"
            },
            "url": "http://dx.doi.org/10.5285/ccb3fd15fbf24d00962ef2f513645b8f",
            "identifierType": "doi",
            "shortUrl": "http://doi.org/10/gcsmcb"
        },
        {
            "ob_id": 9421,
            "relatedTo": {
                "ob_id": 24173,
                "uuid": "124a1c86ffb043f39f3c681ec2a10a12",
                "short_code": "ob"
            },
            "url": "http://dx.doi.org/10.5285/124a1c86ffb043f39f3c681ec2a10a12",
            "identifierType": "doi",
            "shortUrl": "http://doi.org/10/gcsmcc"
        },
        {
            "ob_id": 9422,
            "relatedTo": {
                "ob_id": 24177,
                "uuid": "086735f3f4d64dab8560cf0548d74256",
                "short_code": "ob"
            },
            "url": "http://dx.doi.org/10.5285/086735f3f4d64dab8560cf0548d74256",
            "identifierType": "doi",
            "shortUrl": "http://doi.org/10/gcsmcd"
        },
        {
            "ob_id": 9423,
            "relatedTo": {
                "ob_id": 24055,
                "uuid": "ba698b50584e464c9ad02ed14cc970da",
                "short_code": "ob"
            },
            "url": "http://dx.doi.org/10.5285/ba698b50584e464c9ad02ed14cc970da",
            "identifierType": "doi",
            "shortUrl": "http://doi.org/10/gcsmcf"
        },
        {
            "ob_id": 9424,
            "relatedTo": {
                "ob_id": 24050,
                "uuid": "5157a9c37a484c808f95493aac7a26fa",
                "short_code": "ob"
            },
            "url": "http://dx.doi.org/10.5285/5157a9c37a484c808f95493aac7a26fa",
            "identifierType": "doi",
            "shortUrl": "http://doi.org/10/gcvj6m"
        },
        {
            "ob_id": 9425,
            "relatedTo": {
                "ob_id": 24059,
                "uuid": "7ceb308f2c8044199ae150c4b6cf77c0",
                "short_code": "ob"
            },
            "url": "http://dx.doi.org/10.5285/7ceb308f2c8044199ae150c4b6cf77c0",
            "identifierType": "doi",
            "shortUrl": "http://doi.org/10/gcsmcg"
        },
        {
            "ob_id": 9426,
            "relatedTo": {
                "ob_id": 24063,
                "uuid": "8cbe6c0b85694f95b5172da575b239a0",
                "short_code": "ob"
            },
            "url": "http://dx.doi.org/10.5285/8cbe6c0b85694f95b5172da575b239a0",
            "identifierType": "doi",
            "shortUrl": "http://doi.org/10/gcsmch"
        },
        {
            "ob_id": 9427,
            "relatedTo": {
                "ob_id": 24067,
                "uuid": "d48776745d844771a40d777f3b729978",
                "short_code": "ob"
            },
            "url": "http://dx.doi.org/10.5285/d48776745d844771a40d777f3b729978",
            "identifierType": "doi",
            "shortUrl": "http://doi.org/10/gcvj6n"
        },
        {
            "ob_id": 9428,
            "relatedTo": {
                "ob_id": 24360,
                "uuid": "bdf0d4d2c880474388db70d0fc91c0c0",
                "short_code": "ob"
            },
            "url": "http://dx.doi.org/10.5285/bdf0d4d2c880474388db70d0fc91c0c0",
            "identifierType": "doi",
            "shortUrl": "https://doi.org/10/gcvj6p"
        },
        {
            "ob_id": 9429,
            "relatedTo": {
                "ob_id": 24370,
                "uuid": "895db6ebb74f4b54b7081a5f9cbe2ad2",
                "short_code": "ob"
            },
            "url": "http://dx.doi.org/10.5285/895db6ebb74f4b54b7081a5f9cbe2ad2",
            "identifierType": "doi",
            "shortUrl": "http://doi.org/10/gcsmcj"
        },
        {
            "ob_id": 9430,
            "relatedTo": {
                "ob_id": 24375,
                "uuid": "85119583d35e40548a8dd456f5f3e68b",
                "short_code": "ob"
            },
            "url": "http://dx.doi.org/10.5285/85119583d35e40548a8dd456f5f3e68b",
            "identifierType": "doi",
            "shortUrl": "http://doi.org/10/gcsmck"
        },
        {
            "ob_id": 9431,
            "relatedTo": {
                "ob_id": 24379,
                "uuid": "1f55f8266847470585d1ad934e3ba849",
                "short_code": "ob"
            },
            "url": "http://dx.doi.org/10.5285/1f55f8266847470585d1ad934e3ba849",
            "identifierType": "doi",
            "shortUrl": "http://doi.org/10/gcvj6q"
        },
        {
            "ob_id": 9432,
            "relatedTo": {
                "ob_id": 24392,
                "uuid": "99fe854aa89f4ba388308ae6a56802c1",
                "short_code": "ob"
            },
            "url": "http://dx.doi.org/10.5285/99fe854aa89f4ba388308ae6a56802c1",
            "identifierType": "doi",
            "shortUrl": "https://doi.org/10/gcsmcm"
        },
        {
            "ob_id": 9433,
            "relatedTo": {
                "ob_id": 24397,
                "uuid": "a17a1ae8b7d74da58b59761aea965f76",
                "short_code": "ob"
            },
            "url": "http://dx.doi.org/10.5285/a17a1ae8b7d74da58b59761aea965f76",
            "identifierType": "doi",
            "shortUrl": "https://doi.org/10/gcvj6r"
        },
        {
            "ob_id": 9434,
            "relatedTo": {
                "ob_id": 24401,
                "uuid": "d7ccdf23e45b4d21a8bdd7b8fb20081e",
                "short_code": "ob"
            },
            "url": "http://dx.doi.org/10.5285/d7ccdf23e45b4d21a8bdd7b8fb20081e",
            "identifierType": "doi",
            "shortUrl": "https://doi.org/10/gcvj6s"
        },
        {
            "ob_id": 9435,
            "relatedTo": {
                "ob_id": 24262,
                "uuid": "70ac7b216fe249b59c62242898e210e3",
                "short_code": "ob"
            },
            "url": "http://dx.doi.org/10.5285/70ac7b216fe249b59c62242898e210e3",
            "identifierType": "doi",
            "shortUrl": "http://doi.org/10/gcvj6t"
        },
        {
            "ob_id": 9436,
            "relatedTo": {
                "ob_id": 24268,
                "uuid": "42e445fdff8a4703a9a6cafa540e3e64",
                "short_code": "ob"
            },
            "url": "http://dx.doi.org/10.5285/42e445fdff8a4703a9a6cafa540e3e64",
            "identifierType": "doi",
            "shortUrl": "http://doi.org/10/gcsmcn"
        },
        {
            "ob_id": 9437,
            "relatedTo": {
                "ob_id": 24273,
                "uuid": "888412afde0e461188550cdf8bea3f61",
                "short_code": "ob"
            },
            "url": "http://dx.doi.org/10.5285/888412afde0e461188550cdf8bea3f61",
            "identifierType": "doi",
            "shortUrl": "http://doi.org/10/gcsmcp"
        },
        {
            "ob_id": 9438,
            "relatedTo": {
                "ob_id": 24507,
                "uuid": "58aa3d2037b04e32a28e2a8f29f6232b",
                "short_code": "ob"
            },
            "url": "http://dx.doi.org/10.5285/58aa3d2037b04e32a28e2a8f29f6232b",
            "identifierType": "doi",
            "shortUrl": "https://doi.org/10/gcsmcq"
        },
        {
            "ob_id": 9439,
            "relatedTo": {
                "ob_id": 24222,
                "uuid": "efd3698ceff540eb935af2048b8d2ade",
                "short_code": "ob"
            },
            "url": "http://dx.doi.org/10.5285/efd3698ceff540eb935af2048b8d2ade",
            "identifierType": "doi",
            "shortUrl": "http://doi.org/10/gcvj6v"
        },
        {
            "ob_id": 9440,
            "relatedTo": {
                "ob_id": 24083,
                "uuid": "35ff047b4e4441589a022b140e2dd976",
                "short_code": "ob"
            },
            "url": "http://dx.doi.org/10.5285/35ff047b4e4441589a022b140e2dd976",
            "identifierType": "doi",
            "shortUrl": "http://doi.org/10/gcvj6w"
        },
        {
            "ob_id": 9441,
            "relatedTo": {
                "ob_id": 24088,
                "uuid": "e421aade00064c11876a5c4e25c8cabb",
                "short_code": "ob"
            },
            "url": "http://dx.doi.org/10.5285/e421aade00064c11876a5c4e25c8cabb",
            "identifierType": "doi",
            "shortUrl": "http://doi.org/10/gcsmcr"
        },
        {
            "ob_id": 9442,
            "relatedTo": {
                "ob_id": 24092,
                "uuid": "4be7964ff9e54df79dda27265b97cd21",
                "short_code": "ob"
            },
            "url": "http://dx.doi.org/10.5285/4be7964ff9e54df79dda27265b97cd21",
            "identifierType": "doi",
            "shortUrl": "http://doi.org/10/gcvj6x"
        },
        {
            "ob_id": 9443,
            "relatedTo": {
                "ob_id": 24096,
                "uuid": "90b28cd6975e43568e19122ee01b0476",
                "short_code": "ob"
            },
            "url": "http://dx.doi.org/10.5285/90b28cd6975e43568e19122ee01b0476",
            "identifierType": "doi",
            "shortUrl": "http://doi.org/10/gcvj6z"
        },
        {
            "ob_id": 9444,
            "relatedTo": {
                "ob_id": 24383,
                "uuid": "8edd26f597de4f168c6d92b95e19aecb",
                "short_code": "ob"
            },
            "url": "http://dx.doi.org/10.5285/8edd26f597de4f168c6d92b95e19aecb",
            "identifierType": "doi",
            "shortUrl": "https://doi.org/10/gcvj62"
        },
        {
            "ob_id": 9445,
            "relatedTo": {
                "ob_id": 24388,
                "uuid": "744a336cacbf480dbc679be7de11a9e7",
                "short_code": "ob"
            },
            "url": "http://dx.doi.org/10.5285/744a336cacbf480dbc679be7de11a9e7",
            "identifierType": "doi",
            "shortUrl": "https://doi.org/10/gcvj63"
        },
        {
            "ob_id": 9446,
            "relatedTo": {
                "ob_id": 24503,
                "uuid": "ced4c4e9288d4c2d8c3ae019bae6cc4b",
                "short_code": "ob"
            },
            "url": "http://dx.doi.org/10.5285/ced4c4e9288d4c2d8c3ae019bae6cc4b",
            "identifierType": "doi",
            "shortUrl": "https://doi.org/10/gcvj64"
        },
        {
            "ob_id": 9447,
            "relatedTo": {
                "ob_id": 24499,
                "uuid": "1a751302459b4e56a76c63bcab6344c8",
                "short_code": "ob"
            },
            "url": "http://dx.doi.org/10.5285/1a751302459b4e56a76c63bcab6344c8",
            "identifierType": "doi",
            "shortUrl": "https://doi.org/10/gcsmct"
        },
        {
            "ob_id": 9448,
            "relatedTo": {
                "ob_id": 24494,
                "uuid": "769c10fea82e4f1fb81f594dae95c117",
                "short_code": "ob"
            },
            "url": "http://dx.doi.org/10.5285/769c10fea82e4f1fb81f594dae95c117",
            "identifierType": "doi",
            "shortUrl": "https://doi.org/10/gcvj65"
        },
        {
            "ob_id": 9449,
            "relatedTo": {
                "ob_id": 24277,
                "uuid": "41e73651f347412ea49bfcc937c211bf",
                "short_code": "ob"
            },
            "url": "http://dx.doi.org/10.5285/41e73651f347412ea49bfcc937c211bf",
            "identifierType": "doi",
            "shortUrl": "https://doi.org/10/gcsmcv"
        },
        {
            "ob_id": 9450,
            "relatedTo": {
                "ob_id": 24227,
                "uuid": "ae20406529a14cfb9dbcb23c630d9083",
                "short_code": "ob"
            },
            "url": "http://dx.doi.org/10.5285/ae20406529a14cfb9dbcb23c630d9083",
            "identifierType": "doi",
            "shortUrl": "http://doi.org/10/gcsmcw"
        },
        {
            "ob_id": 9451,
            "relatedTo": {
                "ob_id": 24232,
                "uuid": "e32d08324add414d802731cf9f341609",
                "short_code": "ob"
            },
            "url": "http://dx.doi.org/10.5285/e32d08324add414d802731cf9f341609",
            "identifierType": "doi",
            "shortUrl": "http://doi.org/10/gcvj66"
        },
        {
            "ob_id": 9452,
            "relatedTo": {
                "ob_id": 24236,
                "uuid": "81b5568c7c8e48509cb792ee289eb583",
                "short_code": "ob"
            },
            "url": "http://dx.doi.org/10.5285/81b5568c7c8e48509cb792ee289eb583",
            "identifierType": "doi",
            "shortUrl": "http://doi.org/10/gcvj67"
        },
        {
            "ob_id": 9453,
            "relatedTo": {
                "ob_id": 24451,
                "uuid": "3d5ad59b875b4732bbe8dd5c2143a2bd",
                "short_code": "ob"
            },
            "url": "http://dx.doi.org/10.5285/3d5ad59b875b4732bbe8dd5c2143a2bd",
            "identifierType": "doi",
            "shortUrl": "http://doi.org/10/gcsmcx"
        },
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