---
id: "cz_nkc_aut_id"
kind: "datatype"
status: "draft"
is_pii: false
categories: ["publishing"]
country: ["CZ"]
langs: ["common"]
quality: 90
url: "https://registry.apicrafter.io/datatype/cz_nkc_aut_id"
---

# NL CR authority ID (National Library of the Czech Republic) (`cz_nkc_aut_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 record in the national authority file of the National Library of the Czech Republic (names, corporate bodies, subjects). It has two to four lowercase letters, such as jn, jk, ko or ola, and 2 to 14 digits; in many IDs the digits begin with the year the record was created. The regexp is the Wikidata format of property P691.

- Personal data (PII): no
- Categories: Publishing and print (publishing)
- Countries: Czechia (CZ)
- Languages: Common to most languages (common)
- Classification: identifier

## Detection

Regular expression (Python `re`):

```
^[a-z]{2,4}\d{2,14}$
```

## Examples

- `jn19990218037` — Franz Kafka
- `jk01021023` — Karel Čapek
- `ko2003203322` — Czech Red Cross
- `ola2003162780` — Alexander Fersman
- `KO2003203322` (invalid example) — Capital letters

## Mappings

- wikidata: `P691`

## Translations

- ru: Идентификатор авторитетной записи Национальной библиотеки Чехии: Идентификатор записи национального авторитетного файла Чехии: две-четыре строчные буквы и цифры.
- cs: Identifikátor autority NK ČR

## Sources

- doc: <https://aleph.nkp.cz/>
- wikidata: <https://www.wikidata.org/wiki/Property:P691>

## Quality

Score 90/100. Missing: detector coverage.

JSON: <https://registry.apicrafter.io/api/v1/datatypes/cz_nkc_aut_id.json> · Edit: <https://github.com/apicrafter/metacrafter-registry/edit/main/data/datatypes/CZ/publishing/cz_nkc_aut_id.yaml>