> For the complete documentation index, see [llms.txt](https://standards.spdci.org/standards/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://standards.spdci.org/standards/standards-for-interoperability-interfaces/common-standards-for-interoperability-interfaces/data/data-objects/do.com.01-identifier.md).

# DO.COM.01 Identifier

### DO.COM.01 Identifier

The Identifier object refers to unique numbers identifying individuals.

<table><thead><tr><th width="187">Property Key</th><th width="243">Data Type (and Restrictions)</th><th width="113">Cardinality</th><th width="347">Description</th></tr></thead><tbody><tr><td>identifier_type</td><td><a data-mention href="/pages/kvPu9fvKvYeuqH17cST2">/pages/kvPu9fvKvYeuqH17cST2</a></td><td>0...1</td><td>Type of identifier used by the person</td></tr><tr><td>identifier_value</td><td><a data-mention href="/pages/ctz3lHCKfhpCgUtmqSUn">/pages/ctz3lHCKfhpCgUtmqSUn</a></td><td>0...1</td><td>Value of the identifier</td></tr></tbody></table>

### Example

```json
{
    "@context": {
        "spdci": "https://schema.spdci.org/core/v1/data",
        "rdfs": "http://www.w3.org/2000/01/rdf-schema#",
        "xsd": "http://www.w3.org/2001/XMLSchema#",
        "owl": "http://www.w3.org/2002/07/owl#",
        "code":"https://schema.spdci.or/core/v1/code"
    },
    "@id": "spdci:Identifier_1",
    "@type": "spdci:Identifier",
    "identifier_type": "UIN",
    "identifier_value": "567891011"
}
```

In this example, the Identifier instance describes the identifier type and identifier value.

### JSON-LD File on GitHub

{% embed url="<https://schema.spdci.org/core/v1/data/Identifier.jsonld>" %}


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