---
id: "worldcat_entities_id"
kind: "datatype"
status: "draft"
is_pii: false
categories: ["objectids"]
langs: ["common"]
quality: 90
url: "http://registry.apicrafter.io/datatype/worldcat_entities_id"
---

# WorldCat Entities ID (`worldcat_entities_id`)

> **Draft.** Draft records have not been reviewed yet and may be incomplete or wrong; do not treat them as authoritative for legal or compliance decisions.

Identifier of a person, place, work, event or other entity in WorldCat Entities, the linked data service of OCLC. It is the last segment of the entity URI https://id.oclc.org/worldcat/entity/<id>. OCLC publishes no formal grammar; identifiers seen in practice are 26 letters and digits that start with E39P or E39Q. It succeeds the WorldCat Identities ID.

- Personal data (PII): no
- Categories: Objects identifiers (objectids)
- Countries: global
- Languages: Common to most languages (common)
- Classification: identifier

## Detection

Regular expression (Python `re`):

```
^[a-zA-Z0-9]{2,26}$
```

## Examples

- `E39PBJfrJjjP9djpqRMMWPCPcP` — Eritrea
- `E39PBJt8p3GDkhpJkC9y6FY3wC` — California
- `E39Qhp4vBbhpRH9XvjbDFXtxhb` — World War II
- `E39PCG49K6QCxWwHvtYhKMKkMq` — Gone with the Wind (1939 film)
- `https://id.oclc.org/worldcat/entity/E39PBJfrJjjP9djpqRMMWPCPcP` (invalid example) — full entity URI, not the bare identifier

## Mappings

- wikidata: `P10832`

## Translations

- fr: Identifiant WorldCat Entities
- ru: Идентификатор WorldCat Entities

## Sources

- wikidata: <https://www.wikidata.org/wiki/Property:P10832>
- doc: <https://entities.oclc.org/worldcat/entity>

## Quality

Score 90/100. Missing: detector coverage.

JSON: <http://registry.apicrafter.io/api/v1/datatypes/worldcat_entities_id.json> · Edit: <https://github.com/apicrafter/metacrafter-registry/edit/main/data/datatypes/any/objectids/worldcat_entities_id.yaml>