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=10500
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=10600",
    "previous": "https://api.catalogue.ceda.ac.uk/api/v2/identifiers/?format=api&limit=100&offset=10400",
    "results": [
        {
            "ob_id": 12394,
            "relatedTo": {
                "ob_id": 30500,
                "uuid": "f56980457ce240ccab5ac6d403c81e7a",
                "short_code": "ob"
            },
            "url": "https://dx.doi.org/10.5285/f56980457ce240ccab5ac6d403c81e7a",
            "identifierType": "doi",
            "shortUrl": "https://doi.org/10/grrm7r"
        },
        {
            "ob_id": 12395,
            "relatedTo": {
                "ob_id": 39740,
                "uuid": "6f453428dff04c4ca317d71113fb731c",
                "short_code": "plat"
            },
            "url": "bham-bird-20",
            "identifierType": "ceda_abbreviation",
            "shortUrl": ""
        },
        {
            "ob_id": 12396,
            "relatedTo": {
                "ob_id": 39740,
                "uuid": "6f453428dff04c4ca317d71113fb731c",
                "short_code": "plat"
            },
            "url": "bham-bird-75",
            "identifierType": "ceda_abbreviation",
            "shortUrl": ""
        },
        {
            "ob_id": 12397,
            "relatedTo": {
                "ob_id": 39740,
                "uuid": "6f453428dff04c4ca317d71113fb731c",
                "short_code": "plat"
            },
            "url": "bham-bird-36",
            "identifierType": "ceda_abbreviation",
            "shortUrl": ""
        },
        {
            "ob_id": 12398,
            "relatedTo": {
                "ob_id": 39740,
                "uuid": "6f453428dff04c4ca317d71113fb731c",
                "short_code": "plat"
            },
            "url": "bham-bird-56",
            "identifierType": "ceda_abbreviation",
            "shortUrl": ""
        },
        {
            "ob_id": 12399,
            "relatedTo": {
                "ob_id": 39740,
                "uuid": "6f453428dff04c4ca317d71113fb731c",
                "short_code": "plat"
            },
            "url": "bham-bird-72",
            "identifierType": "ceda_abbreviation",
            "shortUrl": ""
        },
        {
            "ob_id": 12400,
            "relatedTo": {
                "ob_id": 39741,
                "uuid": "8775c916bc4b4af7accb5f121a2fbb5d",
                "short_code": "instr"
            },
            "url": "bham-avian-sensor-01",
            "identifierType": "ceda_abbreviation",
            "shortUrl": ""
        },
        {
            "ob_id": 12401,
            "relatedTo": {
                "ob_id": 39741,
                "uuid": "8775c916bc4b4af7accb5f121a2fbb5d",
                "short_code": "instr"
            },
            "url": "bham-avian-sensor-02",
            "identifierType": "ceda_abbreviation",
            "shortUrl": ""
        },
        {
            "ob_id": 12402,
            "relatedTo": {
                "ob_id": 39741,
                "uuid": "8775c916bc4b4af7accb5f121a2fbb5d",
                "short_code": "instr"
            },
            "url": "bham-avian-sensor-03",
            "identifierType": "ceda_abbreviation",
            "shortUrl": ""
        },
        {
            "ob_id": 12403,
            "relatedTo": {
                "ob_id": 39741,
                "uuid": "8775c916bc4b4af7accb5f121a2fbb5d",
                "short_code": "instr"
            },
            "url": "bham-avian-sensor-06",
            "identifierType": "ceda_abbreviation",
            "shortUrl": ""
        },
        {
            "ob_id": 12404,
            "relatedTo": {
                "ob_id": 39557,
                "uuid": "60c28523d8c54c58831b2608164cf35e",
                "short_code": "ob"
            },
            "url": "https://dx.doi.org/10.5285/60c28523d8c54c58831b2608164cf35e",
            "identifierType": "doi",
            "shortUrl": "https://doi.org/10/gtfzs4"
        },
        {
            "ob_id": 12405,
            "relatedTo": {
                "ob_id": 6086,
                "uuid": "2d9c5f2cc621fb9bc0062356851b31b9",
                "short_code": "coll"
            },
            "url": "https://catalogue.ceda.ac.uk/uuid/719874883fdf563b5302dfec7f5a5070",
            "identifierType": "moles3_url",
            "shortUrl": ""
        },
        {
            "ob_id": 12406,
            "relatedTo": {
                "ob_id": 6086,
                "uuid": "2d9c5f2cc621fb9bc0062356851b31b9",
                "short_code": "coll"
            },
            "url": "http://badc.nerc.ac.uk/view/badc.nerc.ac.uk__ATOM__ACTIVITY_6fcbb918-421b-11e4-a48b-00163e251233",
            "identifierType": "moles2_url",
            "shortUrl": ""
        },
        {
            "ob_id": 12407,
            "relatedTo": {
                "ob_id": 423,
                "uuid": "72afa18db5988d1be0066a26e09422df",
                "short_code": "coll"
            },
            "url": "https://catalogue.ceda.ac.uk/uuid/363919c820d4d6820fb4cf02e6d9756f",
            "identifierType": "moles3_url",
            "shortUrl": ""
        },
        {
            "ob_id": 12408,
            "relatedTo": {
                "ob_id": 423,
                "uuid": "72afa18db5988d1be0066a26e09422df",
                "short_code": "coll"
            },
            "url": "http://badc.nerc.ac.uk/view/badc.nerc.ac.uk__ATOM__dep_12042886951425786",
            "identifierType": "moles2_url",
            "shortUrl": ""
        },
        {
            "ob_id": 12409,
            "relatedTo": {
                "ob_id": 423,
                "uuid": "72afa18db5988d1be0066a26e09422df",
                "short_code": "coll"
            },
            "url": "http://badc.nerc.ac.uk/view/badc.nerc.ac.uk__ATOM__dpt_12042066259725622",
            "identifierType": "moles2_url",
            "shortUrl": ""
        },
        {
            "ob_id": 12410,
            "relatedTo": {
                "ob_id": 423,
                "uuid": "72afa18db5988d1be0066a26e09422df",
                "short_code": "coll"
            },
            "url": "http://badc.nerc.ac.uk/view/badc.nerc.ac.uk__ATOM__obs_12042801703925710",
            "identifierType": "moles2_url",
            "shortUrl": ""
        },
        {
            "ob_id": 12411,
            "relatedTo": {
                "ob_id": 423,
                "uuid": "72afa18db5988d1be0066a26e09422df",
                "short_code": "coll"
            },
            "url": "BCC-CM1",
            "identifierType": "ceda_abbreviation",
            "shortUrl": ""
        },
        {
            "ob_id": 12412,
            "relatedTo": {
                "ob_id": 37092,
                "uuid": "03c935c6890c4b2ebf4aae4d84cd9472",
                "short_code": "ob"
            },
            "url": "https://dx.doi.org/10.5285/03c935c6890c4b2ebf4aae4d84cd9472",
            "identifierType": "doi",
            "shortUrl": "https://doi.org/10/grtdgk"
        },
        {
            "ob_id": 12413,
            "relatedTo": {
                "ob_id": 39674,
                "uuid": "180f1c51a22f4fc48c947d33f6c0815e",
                "short_code": "ob"
            },
            "url": "https://dx.doi.org/10.5285/180f1c51a22f4fc48c947d33f6c0815e",
            "identifierType": "doi",
            "shortUrl": ""
        },
        {
            "ob_id": 12414,
            "relatedTo": {
                "ob_id": 39670,
                "uuid": "4c0e990d61454c22be9030777c7fbe89",
                "short_code": "ob"
            },
            "url": "https://dx.doi.org/10.5285/4c0e990d61454c22be9030777c7fbe89",
            "identifierType": "doi",
            "shortUrl": ""
        },
        {
            "ob_id": 12415,
            "relatedTo": {
                "ob_id": 39666,
                "uuid": "31a23a7fbb2c40828e8af2fd479b683e",
                "short_code": "ob"
            },
            "url": "https://dx.doi.org/10.5285/31a23a7fbb2c40828e8af2fd479b683e",
            "identifierType": "doi",
            "shortUrl": ""
        },
        {
            "ob_id": 12416,
            "relatedTo": {
                "ob_id": 39661,
                "uuid": "ebc32b4b3e3d4e1788bbdd66b6abb5de",
                "short_code": "ob"
            },
            "url": "https://dx.doi.org/10.5285/ebc32b4b3e3d4e1788bbdd66b6abb5de",
            "identifierType": "doi",
            "shortUrl": ""
        },
        {
            "ob_id": 12417,
            "relatedTo": {
                "ob_id": 39542,
                "uuid": "84548d27aac94c32bf94c4d9e7fd5323",
                "short_code": "ob"
            },
            "url": "https://dx.doi.org/10.5285/84548d27aac94c32bf94c4d9e7fd5323",
            "identifierType": "doi",
            "shortUrl": "https://doi.org/10/gthk8x"
        },
        {
            "ob_id": 12418,
            "relatedTo": {
                "ob_id": 39539,
                "uuid": "b109bd69e1af425aa0f661b01c40dc51",
                "short_code": "ob"
            },
            "url": "https://dx.doi.org/10.5285/b109bd69e1af425aa0f661b01c40dc51",
            "identifierType": "doi",
            "shortUrl": "https://doi.org/10/gthk8z"
        },
        {
            "ob_id": 12419,
            "relatedTo": {
                "ob_id": 39541,
                "uuid": "3da1c0a9458e48bfbc20622f4df7d15b",
                "short_code": "ob"
            },
            "url": "https://dx.doi.org/10.5285/3da1c0a9458e48bfbc20622f4df7d15b",
            "identifierType": "doi",
            "shortUrl": "https://doi.org/10/gthk82"
        },
        {
            "ob_id": 12420,
            "relatedTo": {
                "ob_id": 39543,
                "uuid": "072fe59012d24ccaaa5b889a8b7a42b1",
                "short_code": "ob"
            },
            "url": "https://dx.doi.org/10.5285/072fe59012d24ccaaa5b889a8b7a42b1",
            "identifierType": "doi",
            "shortUrl": "https://doi.org/10/gthk83"
        },
        {
            "ob_id": 12421,
            "relatedTo": {
                "ob_id": 39765,
                "uuid": "df93e92a3adc46b9a5c4bd3a547cd242",
                "short_code": "ob"
            },
            "url": "https://dx.doi.org/10.5285/df93e92a3adc46b9a5c4bd3a547cd242",
            "identifierType": "doi",
            "shortUrl": ""
        },
        {
            "ob_id": 12422,
            "relatedTo": {
                "ob_id": 38241,
                "uuid": "022d449b91eb453eb56228c17fdce725",
                "short_code": "ob"
            },
            "url": "https://dx.doi.org/10.5285/022d449b91eb453eb56228c17fdce725",
            "identifierType": "doi",
            "shortUrl": ""
        },
        {
            "ob_id": 12423,
            "relatedTo": {
                "ob_id": 38244,
                "uuid": "572c9744ddab47fc8a5b938c4a4f7387",
                "short_code": "ob"
            },
            "url": "https://dx.doi.org/10.5285/572c9744ddab47fc8a5b938c4a4f7387",
            "identifierType": "doi",
            "shortUrl": ""
        },
        {
            "ob_id": 12424,
            "relatedTo": {
                "ob_id": 37887,
                "uuid": "8855e410adf547b4afd039a5b88487f4",
                "short_code": "ob"
            },
            "url": "https://dx.doi.org/10.5285/8855e410adf547b4afd039a5b88487f4",
            "identifierType": "doi",
            "shortUrl": ""
        },
        {
            "ob_id": 12425,
            "relatedTo": {
                "ob_id": 38263,
                "uuid": "dc93cf482acb4dff8d7baa01dfa1fa29",
                "short_code": "ob"
            },
            "url": "https://dx.doi.org/10.5285/dc93cf482acb4dff8d7baa01dfa1fa29",
            "identifierType": "doi",
            "shortUrl": ""
        },
        {
            "ob_id": 12426,
            "relatedTo": {
                "ob_id": 38253,
                "uuid": "cdabe9af5aa94608b227e6b9a96771f9",
                "short_code": "ob"
            },
            "url": "https://dx.doi.org/10.5285/cdabe9af5aa94608b227e6b9a96771f9",
            "identifierType": "doi",
            "shortUrl": ""
        },
        {
            "ob_id": 12427,
            "relatedTo": {
                "ob_id": 37886,
                "uuid": "288d2cfa740f4e60a369b5778064bd5a",
                "short_code": "ob"
            },
            "url": "https://dx.doi.org/10.5285/288d2cfa740f4e60a369b5778064bd5a",
            "identifierType": "doi",
            "shortUrl": ""
        },
        {
            "ob_id": 12428,
            "relatedTo": {
                "ob_id": 38247,
                "uuid": "a1f46ad9f2644e60a87591c6b4537fef",
                "short_code": "ob"
            },
            "url": "https://dx.doi.org/10.5285/a1f46ad9f2644e60a87591c6b4537fef",
            "identifierType": "doi",
            "shortUrl": ""
        },
        {
            "ob_id": 12429,
            "relatedTo": {
                "ob_id": 37888,
                "uuid": "ca4127fb1be14ea68fefd5643fe3677f",
                "short_code": "ob"
            },
            "url": "https://dx.doi.org/10.5285/ca4127fb1be14ea68fefd5643fe3677f",
            "identifierType": "doi",
            "shortUrl": ""
        },
        {
            "ob_id": 12430,
            "relatedTo": {
                "ob_id": 39504,
                "uuid": "abb030f60cf848278fe519379a2aaac9",
                "short_code": "ob"
            },
            "url": "https://dx.doi.org/10.5285/abb030f60cf848278fe519379a2aaac9",
            "identifierType": "doi",
            "shortUrl": ""
        },
        {
            "ob_id": 12431,
            "relatedTo": {
                "ob_id": 39510,
                "uuid": "bf31afbbbafc49d39546aa78a2268f44",
                "short_code": "ob"
            },
            "url": "https://dx.doi.org/10.5285/bf31afbbbafc49d39546aa78a2268f44",
            "identifierType": "doi",
            "shortUrl": ""
        },
        {
            "ob_id": 12432,
            "relatedTo": {
                "ob_id": 33001,
                "uuid": "e0329fa69dfa49d0903e132dca1c4890",
                "short_code": "ob"
            },
            "url": "MEGRIDOP",
            "identifierType": "ceda_abbreviation",
            "shortUrl": ""
        },
        {
            "ob_id": 12434,
            "relatedTo": {
                "ob_id": 39855,
                "uuid": "f4aa31e2807d49f0bb38e8b7bdcbbffa",
                "short_code": "plat"
            },
            "url": "ogulin",
            "identifierType": "ceda_abbreviation",
            "shortUrl": ""
        },
        {
            "ob_id": 12435,
            "relatedTo": {
                "ob_id": 39855,
                "uuid": "f4aa31e2807d49f0bb38e8b7bdcbbffa",
                "short_code": "plat"
            },
            "url": "0-20000-0-14328",
            "identifierType": "ceda_abbreviation",
            "shortUrl": ""
        },
        {
            "ob_id": 12436,
            "relatedTo": {
                "ob_id": 39855,
                "uuid": "f4aa31e2807d49f0bb38e8b7bdcbbffa",
                "short_code": "plat"
            },
            "url": "14328",
            "identifierType": "ceda_abbreviation",
            "shortUrl": ""
        },
        {
            "ob_id": 12437,
            "relatedTo": {
                "ob_id": 39859,
                "uuid": "c3ab2c43d96a4a92a342825173d72538",
                "short_code": "plat"
            },
            "url": "osijek",
            "identifierType": "ceda_abbreviation",
            "shortUrl": ""
        },
        {
            "ob_id": 12438,
            "relatedTo": {
                "ob_id": 39859,
                "uuid": "c3ab2c43d96a4a92a342825173d72538",
                "short_code": "plat"
            },
            "url": "0-20000-0-14280",
            "identifierType": "ceda_abbreviation",
            "shortUrl": ""
        },
        {
            "ob_id": 12439,
            "relatedTo": {
                "ob_id": 39859,
                "uuid": "c3ab2c43d96a4a92a342825173d72538",
                "short_code": "plat"
            },
            "url": "14280",
            "identifierType": "ceda_abbreviation",
            "shortUrl": ""
        },
        {
            "ob_id": 12440,
            "relatedTo": {
                "ob_id": 39863,
                "uuid": "5e8aab4bf5da472ca8a6d5c48b010aaf",
                "short_code": "plat"
            },
            "url": "varazdin",
            "identifierType": "ceda_abbreviation",
            "shortUrl": ""
        },
        {
            "ob_id": 12441,
            "relatedTo": {
                "ob_id": 39863,
                "uuid": "5e8aab4bf5da472ca8a6d5c48b010aaf",
                "short_code": "plat"
            },
            "url": "0-20000-0-14246",
            "identifierType": "ceda_abbreviation",
            "shortUrl": ""
        },
        {
            "ob_id": 12442,
            "relatedTo": {
                "ob_id": 39863,
                "uuid": "5e8aab4bf5da472ca8a6d5c48b010aaf",
                "short_code": "plat"
            },
            "url": "14246",
            "identifierType": "ceda_abbreviation",
            "shortUrl": ""
        },
        {
            "ob_id": 12443,
            "relatedTo": {
                "ob_id": 39867,
                "uuid": "8fad8b3ec84947469b6eadb0a07176cd",
                "short_code": "instr"
            },
            "url": "cao-amx-vaisala-cl51",
            "identifierType": "ceda_abbreviation",
            "shortUrl": ""
        },
        {
            "ob_id": 12444,
            "relatedTo": {
                "ob_id": 39868,
                "uuid": "d677316cfdb44a8d804aff91046dcc78",
                "short_code": "plat"
            },
            "url": "cao-amx",
            "identifierType": "ceda_abbreviation",
            "shortUrl": ""
        },
        {
            "ob_id": 12445,
            "relatedTo": {
                "ob_id": 39868,
                "uuid": "d677316cfdb44a8d804aff91046dcc78",
                "short_code": "plat"
            },
            "url": "0-20008-0-CYP",
            "identifierType": "ceda_abbreviation",
            "shortUrl": ""
        },
        {
            "ob_id": 12446,
            "relatedTo": {
                "ob_id": 39875,
                "uuid": "bdf025055db74925a986437663a76525",
                "short_code": "plat"
            },
            "url": "praha",
            "identifierType": "ceda_abbreviation",
            "shortUrl": ""
        },
        {
            "ob_id": 12447,
            "relatedTo": {
                "ob_id": 39875,
                "uuid": "bdf025055db74925a986437663a76525",
                "short_code": "plat"
            },
            "url": "0-20000-0-11518",
            "identifierType": "ceda_abbreviation",
            "shortUrl": ""
        },
        {
            "ob_id": 12448,
            "relatedTo": {
                "ob_id": 39875,
                "uuid": "bdf025055db74925a986437663a76525",
                "short_code": "plat"
            },
            "url": "11518",
            "identifierType": "ceda_abbreviation",
            "shortUrl": ""
        },
        {
            "ob_id": 12449,
            "relatedTo": {
                "ob_id": 39879,
                "uuid": "12e89c4dd0eb4bce9bb6a523716b968c",
                "short_code": "plat"
            },
            "url": "issy-heliport",
            "identifierType": "ceda_abbreviation",
            "shortUrl": ""
        },
        {
            "ob_id": 12450,
            "relatedTo": {
                "ob_id": 39879,
                "uuid": "12e89c4dd0eb4bce9bb6a523716b968c",
                "short_code": "plat"
            },
            "url": "0-250-0-92040002",
            "identifierType": "ceda_abbreviation",
            "shortUrl": ""
        },
        {
            "ob_id": 12451,
            "relatedTo": {
                "ob_id": 39883,
                "uuid": "fcb511fc33174aaf8cbf178d98847aee",
                "short_code": "plat"
            },
            "url": "monte-cimone",
            "identifierType": "ceda_abbreviation",
            "shortUrl": ""
        },
        {
            "ob_id": 12452,
            "relatedTo": {
                "ob_id": 39883,
                "uuid": "fcb511fc33174aaf8cbf178d98847aee",
                "short_code": "plat"
            },
            "url": "0-20008-0-CMN",
            "identifierType": "ceda_abbreviation",
            "shortUrl": ""
        },
        {
            "ob_id": 12453,
            "relatedTo": {
                "ob_id": 39887,
                "uuid": "f2caf6fb5cf048dfbf2679a7693132aa",
                "short_code": "plat"
            },
            "url": "bern-belpmoos",
            "identifierType": "ceda_abbreviation",
            "shortUrl": ""
        },
        {
            "ob_id": 12454,
            "relatedTo": {
                "ob_id": 39887,
                "uuid": "f2caf6fb5cf048dfbf2679a7693132aa",
                "short_code": "plat"
            },
            "url": "0-20000-0-06630",
            "identifierType": "ceda_abbreviation",
            "shortUrl": ""
        },
        {
            "ob_id": 12455,
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