As of 2022-03-07, the Wikidata property National Provider Identifier (P9450) is used on 23 items as main value on statements (not counting qualifiers) of the Q and P namespaces.

Closest properties: by cardinality of intersection, by Jaccard index.

Display properties of the following types:                                    

Closest properties by cardinality of intersection

IDLabelIntersection cardinalityJaccard index
P6634 LinkedIn personal profile ID 10
 0.0002
P244 Library of Congress authority ID 8
 0.0000
P213 ISNI 7
 0.0000
P214 VIAF ID 7
 0.0000
P496 ORCID iD 6
 0.0000
P7859 WorldCat Identities ID 6
 0.0000
P2038 ResearchGate profile ID 5
 0.0001
P1960 Google Scholar author ID 5
 0.0001
P6023 ResearchGate contributions ID 4
 0.0008
P2002 Twitter username 4
 0.0000
P1153 Scopus author ID 4
 0.0000
P4862 Amazon author ID 3
 0.0005
P4012 Semantic Scholar author ID 3
 0.0001
P6178 Dimensions author ID 3
 0.0000
P6366 Microsoft Academic ID 3
 0.0000
P3108 Yelp ID 2
 0.0008
P2963 Goodreads author ID 2
 0.0001
P3500 Ringgold ID 2
 0.0000
P6782 ROR ID 2
 0.0000
P2427 GRID ID 2
 0.0000
P1053 ResearcherID 2
 0.0000
P1006 Nationale Thesaurus voor Auteurs ID 2
 0.0000
P646 Freebase ID 2
 0.0000
P2671 Google Knowledge Graph ID 2
 0.0000
P8772 Blogger user profile ID 1
 0.0110
P2607 BookBrainz author ID 1
 0.0015
P2087 Crunchbase person ID 1
 0.0006
P2611 TED speaker ID 1
 0.0004
P3347 PermID 1
 0.0002
P7029 National Library of Russia ID 1
 0.0002
P6005 Muck Rack journalist ID 1
 0.0002
P2037 GitHub username 1
 0.0001
P7400 LibraryThing author ID 1
 0.0001
P4619 National Library of Brazil ID 1
 0.0001
P3153 Crossref funder ID 1
 0.0001
P1607 Dialnet author ID 1
 0.0001
P1278 Legal Entity Identifier 1
 0.0000
P5034 National Library of Korea ID 1
 0.0000
P3065 RERO ID 1
 0.0000
P271 CiNii author ID (books) 1
 0.0000
P10283 OpenAlex ID 1
 0.0000
P349 National Diet Library ID 1
 0.0000
P8189 National Library of Israel J9U ID 1
 0.0000
P3417 Quora topic ID 1
 0.0000
P402 OpenStreetMap relation ID 1
 0.0000
P2013 Facebook ID 1
 0.0000
P691 NKCR AUT ID 1
 0.0000
P269 IdRef ID 1
 0.0000
P227 GND ID 1
 0.0000

Closest properties by Jaccard index

IDLabelIntersection cardinalityJaccard index
P8772 Blogger user profile ID 1
 0.0110
P2607 BookBrainz author ID 1
 0.0015
P3108 Yelp ID 2
 0.0008
P6023 ResearchGate contributions ID 4
 0.0008
P2087 Crunchbase person ID 1
 0.0006
P4862 Amazon author ID 3
 0.0005
P2611 TED speaker ID 1
 0.0004
P6634 LinkedIn personal profile ID 10
 0.0002
P3347 PermID 1
 0.0002
P7029 National Library of Russia ID 1
 0.0002
P6005 Muck Rack journalist ID 1
 0.0002
P2037 GitHub username 1
 0.0001
P7400 LibraryThing author ID 1
 0.0001
P2963 Goodreads author ID 2
 0.0001
P2038 ResearchGate profile ID 5
 0.0001
P1960 Google Scholar author ID 5
 0.0001
P4619 National Library of Brazil ID 1
 0.0001
P4012 Semantic Scholar author ID 3
 0.0001
P3153 Crossref funder ID 1
 0.0001
P1607 Dialnet author ID 1
 0.0001
P1278 Legal Entity Identifier 1
 0.0000
P6178 Dimensions author ID 3
 0.0000
P3500 Ringgold ID 2
 0.0000
P6782 ROR ID 2
 0.0000
P2427 GRID ID 2
 0.0000
P5034 National Library of Korea ID 1
 0.0000
P3065 RERO ID 1
 0.0000
P2002 Twitter username 4
 0.0000
P271 CiNii author ID (books) 1
 0.0000
P6366 Microsoft Academic ID 3
 0.0000
P10283 OpenAlex ID 1
 0.0000
P1153 Scopus author ID 4
 0.0000
P1053 ResearcherID 2
 0.0000
P349 National Diet Library ID 1
 0.0000
P244 Library of Congress authority ID 8
 0.0000
P8189 National Library of Israel J9U ID 1
 0.0000
P3417 Quora topic ID 1
 0.0000
P213 ISNI 7
 0.0000
P402 OpenStreetMap relation ID 1
 0.0000
P2013 Facebook ID 1
 0.0000
P1006 Nationale Thesaurus voor Auteurs ID 2
 0.0000
P496 ORCID iD 6
 0.0000
P7859 WorldCat Identities ID 6
 0.0000
P214 VIAF ID 7
 0.0000
P691 NKCR AUT ID 1
 0.0000
P269 IdRef ID 1
 0.0000
P227 GND ID 1
 0.0000
P646 Freebase ID 2
 0.0000
P2671 Google Knowledge Graph ID 2
 0.0000