{
  "id": "lccn",
  "name": "Library of Congress Control Number (LCCN)",
  "status": "draft",
  "doc": "Serial number of a catalog record of the US Library of Congress, used since 1898. It is made of a year and a six-digit serial number with leading zeros. The year has two digits for 1898 to 2000 and four digits from 2001. A hyphen between year and serial number is optional. Some numbers start with a short alphabetic prefix such as n, sh or sn. The LCCN is not related to the Library of Congress Classification.",
  "categories": [
    {
      "id": "objectids",
      "name": "Objects identifiers"
    }
  ],
  "langs": [
    {
      "id": "common",
      "name": "Common to most languages"
    }
  ],
  "is_pii": false,
  "classification": "identifier",
  "regexp": "^[a-z]{0,3}(?:\\d{2}|\\d{4})-?\\d{6}$",
  "examples": [
    {
      "value": "11025047",
      "description": "1911 edition of Treasure Island"
    },
    {
      "value": "sn00063530",
      "description": "Serial: Malheur Enterprise (newspaper)"
    },
    {
      "value": "n81092084",
      "description": "Name authority: Royal Society for the Prevention of Cruelty to Animals"
    },
    {
      "value": "sh85037527",
      "description": "Subject heading: dialect"
    },
    {
      "value": "n7902293",
      "valid": false,
      "description": "The serial number must have six digits"
    }
  ],
  "mappings": {
    "wikidata": "P1144",
    "bioregistry": "lccn"
  },
  "links": [
    {
      "type": "wikipedia",
      "url": "https://en.wikipedia.org/wiki/Library_of_Congress_Control_Number"
    },
    {
      "type": "wikidata",
      "url": "https://www.wikidata.org/wiki/Property:P1144"
    },
    {
      "type": "wikidata",
      "url": "https://www.wikidata.org/wiki/Property:P244"
    }
  ],
  "type": "datatype",
  "wikidata_property": "P1144",
  "translations": {}
}