{"schema_version":"4ort.packet/1","entity":{"entity_id":"checkuser","kg_uuid":"86dedfc7-8473-438a-a078-492e01fd92e1","wikidata_id":"Q21676386","name":"CheckUser","description":"MediaWiki extension that lets administrators correlate between usernames and IP addresses","type":"Event","url":"https://4ort.xyz/entity/checkuser"},"status":"complete","as_of":{"copy_written_at":"2026-11-07T18:02:14Z","last_source_edit_seen":"2026-09-18T04:58:01Z","stale_possible":true,"claims_refreshed_at":null,"source_revision":null},"facts":[{"field":"P31","label":"instance of","value":"MediaWiki extension","value_id":"Q6805426","value_raw":"Q6805426","rank":"normal","current":null,"qualifiers":[],"layer":"source","citation":{"source":"wikidata","source_name":"Wikidata","source_record":"https://www.wikidata.org/wiki/Q21676386#P31","source_edition":null,"edition_basis":"unknown","licence":"CC0 1.0 Universal","licence_url":"https://creativecommons.org/publicdomain/zero/1.0/","attribution":null,"references":[]},"trust":{"band":"unscored","basis":"wikidata-reference-support/2","calibrated":false}},{"field":"P31","label":"instance of","value":"free software","value_id":"Q341","value_raw":"Q341","rank":"normal","current":null,"qualifiers":[],"layer":"source","citation":{"source":"wikidata","source_name":"Wikidata","source_record":"https://www.wikidata.org/wiki/Q21676386#P31","source_edition":null,"edition_basis":"unknown","licence":"CC0 1.0 Universal","licence_url":"https://creativecommons.org/publicdomain/zero/1.0/","attribution":null,"references":[]},"trust":{"band":"unscored","basis":"wikidata-reference-support/2","calibrated":false}},{"field":"P856","label":"official website","value":"https://www.mediawiki.org/wiki/Extension:CheckUser","value_id":null,"value_raw":"https://www.mediawiki.org/wiki/Extension:CheckUser","rank":"normal","current":null,"qualifiers":[{"field":"P407","label":"language of work or name","value":"English"}],"layer":"source","citation":{"source":"wikidata","source_name":"Wikidata","source_record":"https://www.wikidata.org/wiki/Q21676386#P856","source_edition":null,"edition_basis":"unknown","licence":"CC0 1.0 Universal","licence_url":"https://creativecommons.org/publicdomain/zero/1.0/","attribution":null,"references":[]},"trust":{"band":"unscored","basis":"wikidata-reference-support/2","calibrated":false}},{"field":"P178","label":"developer","value":"Aaron Schulz","value_id":"Q123010069","value_raw":"Q123010069","rank":"normal","current":null,"qualifiers":[],"layer":"source","citation":{"source":"wikidata","source_name":"Wikidata","source_record":"https://www.wikidata.org/wiki/Q21676386#P178","source_edition":null,"edition_basis":"unknown","licence":"CC0 1.0 Universal","licence_url":"https://creativecommons.org/publicdomain/zero/1.0/","attribution":null,"references":[]},"trust":{"band":"unscored","basis":"wikidata-reference-support/2","calibrated":false}},{"field":"P178","label":"developer","value":"Tim Starling","value_id":"Q56636002","value_raw":"Q56636002","rank":"normal","current":null,"qualifiers":[],"layer":"source","citation":{"source":"wikidata","source_name":"Wikidata","source_record":"https://www.wikidata.org/wiki/Q21676386#P178","source_edition":null,"edition_basis":"unknown","licence":"CC0 1.0 Universal","licence_url":"https://creativecommons.org/publicdomain/zero/1.0/","attribution":null,"references":[]},"trust":{"band":"unscored","basis":"wikidata-reference-support/2","calibrated":false}},{"field":"P178","label":"developer","value":"Category:William Brown (Wikimedian)","value_id":"Q134428857","value_raw":"Q134428857","rank":"normal","current":null,"qualifiers":[],"layer":"source","citation":{"source":"wikidata","source_name":"Wikidata","source_record":"https://www.wikidata.org/wiki/Q21676386#P178","source_edition":null,"edition_basis":"unknown","licence":"CC0 1.0 Universal","licence_url":"https://creativecommons.org/publicdomain/zero/1.0/","attribution":null,"references":[]},"trust":{"band":"unscored","basis":"wikidata-reference-support/2","calibrated":false}},{"field":"P275","label":"copyright license","value":"GNU General Public License, version 2.0 or later","value_id":"Q27016752","value_raw":"Q27016752","rank":"normal","current":null,"qualifiers":[],"layer":"source","citation":{"source":"wikidata","source_name":"Wikidata","source_record":"https://www.wikidata.org/wiki/Q21676386#P275","source_edition":null,"edition_basis":"unknown","licence":"CC0 1.0 Universal","licence_url":"https://creativecommons.org/publicdomain/zero/1.0/","attribution":null,"references":[]},"trust":{"band":"unscored","basis":"wikidata-reference-support/2","calibrated":false}},{"field":"P348","label":"software version identifier","value":"2.4","value_id":null,"value_raw":"2.4","rank":"normal","current":null,"qualifiers":[],"layer":"source","citation":{"source":"wikidata","source_name":"Wikidata","source_record":"https://www.wikidata.org/wiki/Q21676386#P348","source_edition":null,"edition_basis":"unknown","licence":"CC0 1.0 Universal","licence_url":"https://creativecommons.org/publicdomain/zero/1.0/","attribution":null,"references":[]},"trust":{"band":"unscored","basis":"wikidata-reference-support/2","calibrated":false}},{"field":"P348","label":"software version identifier","value":"1.19","value_id":null,"value_raw":"1.19","rank":"normal","current":null,"qualifiers":[{"field":"P548","label":"version type","value":"stable version"},{"field":"P577","label":"publication date","value":"2024-11-26"}],"layer":"source","citation":{"source":"wikidata","source_name":"Wikidata","source_record":"https://www.wikidata.org/wiki/Q21676386#P348","source_edition":null,"edition_basis":"unknown","licence":"CC0 1.0 Universal","licence_url":"https://creativecommons.org/publicdomain/zero/1.0/","attribution":null,"references":[]},"trust":{"band":"unscored","basis":"wikidata-reference-support/2","calibrated":false}},{"field":"P348","label":"software version identifier","value":"1.20","value_id":null,"value_raw":"1.20","rank":"normal","current":null,"qualifiers":[{"field":"P548","label":"version type","value":"stable version"},{"field":"P577","label":"publication date","value":"2024-11-26"}],"layer":"source","citation":{"source":"wikidata","source_name":"Wikidata","source_record":"https://www.wikidata.org/wiki/Q21676386#P348","source_edition":null,"edition_basis":"unknown","licence":"CC0 1.0 Universal","licence_url":"https://creativecommons.org/publicdomain/zero/1.0/","attribution":null,"references":[]},"trust":{"band":"unscored","basis":"wikidata-reference-support/2","calibrated":false}},{"field":"P348","label":"software version identifier","value":"1.21","value_id":null,"value_raw":"1.21","rank":"normal","current":null,"qualifiers":[{"field":"P548","label":"version type","value":"stable version"},{"field":"P577","label":"publication date","value":"2024-11-26"}],"layer":"source","citation":{"source":"wikidata","source_name":"Wikidata","source_record":"https://www.wikidata.org/wiki/Q21676386#P348","source_edition":null,"edition_basis":"unknown","licence":"CC0 1.0 Universal","licence_url":"https://creativecommons.org/publicdomain/zero/1.0/","attribution":null,"references":[]},"trust":{"band":"unscored","basis":"wikidata-reference-support/2","calibrated":false}},{"field":"P348","label":"software version identifier","value":"1.22","value_id":null,"value_raw":"1.22","rank":"normal","current":null,"qualifiers":[{"field":"P548","label":"version type","value":"stable version"},{"field":"P577","label":"publication date","value":"2024-11-26"}],"layer":"source","citation":{"source":"wikidata","source_name":"Wikidata","source_record":"https://www.wikidata.org/wiki/Q21676386#P348","source_edition":null,"edition_basis":"unknown","licence":"CC0 1.0 Universal","licence_url":"https://creativecommons.org/publicdomain/zero/1.0/","attribution":null,"references":[]},"trust":{"band":"unscored","basis":"wikidata-reference-support/2","calibrated":false}},{"field":"P1324","label":"source code repository URL","value":"https://phabricator.wikimedia.org/diffusion/ECHU/","value_id":null,"value_raw":"https://phabricator.wikimedia.org/diffusion/ECHU/","rank":"normal","current":null,"qualifiers":[{"field":"P1552","label":"has characteristic","value":"mirror storage"},{"field":"P8423","label":"version control system","value":"Git"},{"field":"P10627","label":"web interface software","value":"Diffusion"}],"layer":"source","citation":{"source":"wikidata","source_name":"Wikidata","source_record":"https://www.wikidata.org/wiki/Q21676386#P1324","source_edition":null,"edition_basis":"unknown","licence":"CC0 1.0 Universal","licence_url":"https://creativecommons.org/publicdomain/zero/1.0/","attribution":null,"references":[]},"trust":{"band":"unscored","basis":"wikidata-reference-support/2","calibrated":false}},{"field":"P1324","label":"source code repository URL","value":"https://gerrit.wikimedia.org/g/mediawiki/extensions/CheckUser","value_id":null,"value_raw":"https://gerrit.wikimedia.org/g/mediawiki/extensions/CheckUser","rank":"normal","current":null,"qualifiers":[{"field":"P8423","label":"version control system","value":"Git"},{"field":"P10627","label":"web interface software","value":"Gitiles"}],"layer":"source","citation":{"source":"wikidata","source_name":"Wikidata","source_record":"https://www.wikidata.org/wiki/Q21676386#P1324","source_edition":null,"edition_basis":"unknown","licence":"CC0 1.0 Universal","licence_url":"https://creativecommons.org/publicdomain/zero/1.0/","attribution":null,"references":[]},"trust":{"band":"unscored","basis":"wikidata-reference-support/2","calibrated":false}},{"field":"P1324","label":"source code repository URL","value":"https://github.com/wikimedia/mediawiki-extensions-CheckUser","value_id":null,"value_raw":"https://github.com/wikimedia/mediawiki-extensions-CheckUser","rank":"normal","current":null,"qualifiers":[{"field":"P1552","label":"has characteristic","value":"mirror storage"},{"field":"P8423","label":"version control system","value":"Git"},{"field":"P10627","label":"web interface software","value":"GitHub"}],"layer":"source","citation":{"source":"wikidata","source_name":"Wikidata","source_record":"https://www.wikidata.org/wiki/Q21676386#P1324","source_edition":null,"edition_basis":"unknown","licence":"CC0 1.0 Universal","licence_url":"https://creativecommons.org/publicdomain/zero/1.0/","attribution":null,"references":[]},"trust":{"band":"unscored","basis":"wikidata-reference-support/2","calibrated":false}},{"field":"P1401","label":"issue tracker URL","value":"https://phabricator.wikimedia.org/tag/checkuser/","value_id":null,"value_raw":"https://phabricator.wikimedia.org/tag/checkuser/","rank":"normal","current":null,"qualifiers":[],"layer":"source","citation":{"source":"wikidata","source_name":"Wikidata","source_record":"https://www.wikidata.org/wiki/Q21676386#P1401","source_edition":null,"edition_basis":"unknown","licence":"CC0 1.0 Universal","licence_url":"https://creativecommons.org/publicdomain/zero/1.0/","attribution":null,"references":[]},"trust":{"band":"unscored","basis":"wikidata-reference-support/2","calibrated":false}},{"field":"P1547","label":"depends on software","value":"MediaWiki","value_id":"Q83","value_raw":"Q83","rank":"normal","current":null,"qualifiers":[],"layer":"source","citation":{"source":"wikidata","source_name":"Wikidata","source_record":"https://www.wikidata.org/wiki/Q21676386#P1547","source_edition":null,"edition_basis":"unknown","licence":"CC0 1.0 Universal","licence_url":"https://creativecommons.org/publicdomain/zero/1.0/","attribution":null,"references":[]},"trust":{"band":"unscored","basis":"wikidata-reference-support/2","calibrated":false}},{"field":"P2377","label":"MediaWiki hooks used","value":"RecentChange_save","value_id":"Q21675534","value_raw":"Q21675534","rank":"normal","current":null,"qualifiers":[],"layer":"source","citation":{"source":"wikidata","source_name":"Wikidata","source_record":"https://www.wikidata.org/wiki/Q21676386#P2377","source_edition":null,"edition_basis":"unknown","licence":"CC0 1.0 Universal","licence_url":"https://creativecommons.org/publicdomain/zero/1.0/","attribution":null,"references":[]},"trust":{"band":"unscored","basis":"wikidata-reference-support/2","calibrated":false}},{"field":"P2377","label":"MediaWiki hooks used","value":"EmailUser","value_id":"Q21675194","value_raw":"Q21675194","rank":"normal","current":null,"qualifiers":[],"layer":"source","citation":{"source":"wikidata","source_name":"Wikidata","source_record":"https://www.wikidata.org/wiki/Q21676386#P2377","source_edition":null,"edition_basis":"unknown","licence":"CC0 1.0 Universal","licence_url":"https://creativecommons.org/publicdomain/zero/1.0/","attribution":null,"references":[]},"trust":{"band":"unscored","basis":"wikidata-reference-support/2","calibrated":false}},{"field":"P2377","label":"MediaWiki hooks used","value":"AuthPluginAutoCreate","value_id":"Q21675124","value_raw":"Q21675124","rank":"normal","current":null,"qualifiers":[],"layer":"source","citation":{"source":"wikidata","source_name":"Wikidata","source_record":"https://www.wikidata.org/wiki/Q21676386#P2377","source_edition":null,"edition_basis":"unknown","licence":"CC0 1.0 Universal","licence_url":"https://creativecommons.org/publicdomain/zero/1.0/","attribution":null,"references":[]},"trust":{"band":"unscored","basis":"wikidata-reference-support/2","calibrated":false}},{"field":"P2377","label":"MediaWiki hooks used","value":"ParserTestTables","value_id":"Q21675529","value_raw":"Q21675529","rank":"normal","current":null,"qualifiers":[],"layer":"source","citation":{"source":"wikidata","source_name":"Wikidata","source_record":"https://www.wikidata.org/wiki/Q21676386#P2377","source_edition":null,"edition_basis":"unknown","licence":"CC0 1.0 Universal","licence_url":"https://creativecommons.org/publicdomain/zero/1.0/","attribution":null,"references":[]},"trust":{"band":"unscored","basis":"wikidata-reference-support/2","calibrated":false}},{"field":"P2377","label":"MediaWiki hooks used","value":"LoadExtensionSchemaUpdates","value_id":"Q21675463","value_raw":"Q21675463","rank":"normal","current":null,"qualifiers":[],"layer":"source","citation":{"source":"wikidata","source_name":"Wikidata","source_record":"https://www.wikidata.org/wiki/Q21676386#P2377","source_edition":null,"edition_basis":"unknown","licence":"CC0 1.0 Universal","licence_url":"https://creativecommons.org/publicdomain/zero/1.0/","attribution":null,"references":[]},"trust":{"band":"unscored","basis":"wikidata-reference-support/2","calibrated":false}},{"field":"P6216","label":"copyright status","value":"copyrighted","value_id":"Q50423863","value_raw":"Q50423863","rank":"normal","current":null,"qualifiers":[],"layer":"source","citation":{"source":"wikidata","source_name":"Wikidata","source_record":"https://www.wikidata.org/wiki/Q21676386#P6216","source_edition":null,"edition_basis":"unknown","licence":"CC0 1.0 Universal","licence_url":"https://creativecommons.org/publicdomain/zero/1.0/","attribution":null,"references":[]},"trust":{"band":"unscored","basis":"wikidata-reference-support/2","calibrated":false}},{"field":"P6931","label":"Repology project name","value":"mediawiki-extensions-checkuser","value_id":null,"value_raw":"mediawiki-extensions-checkuser","rank":"normal","current":null,"qualifiers":[],"layer":"source","citation":{"source":"wikidata","source_name":"Wikidata","source_record":"https://www.wikidata.org/wiki/Q21676386#P6931","source_edition":null,"edition_basis":"unknown","licence":"CC0 1.0 Universal","licence_url":"https://creativecommons.org/publicdomain/zero/1.0/","attribution":null,"references":[]},"trust":{"band":"unscored","basis":"wikidata-reference-support/2","calibrated":false}}],"unknowns":[],"omitted":{"facts":0,"reason":null},"licences":[{"source":"wikidata","source_name":"Wikidata","licence":"CC0 1.0 Universal","licence_url":"https://creativecommons.org/publicdomain/zero/1.0/","attribution":null,"fields":["P31","P856","P178","P275","P348","P1324","P1401","P1547","P2377","P6216","P6931"]}],"routes":{"entity_page":"https://4ort.xyz/entity/checkuser","packet_api":"https://4ort.xyz/api/v1/entities/checkuser/packet","facts_jsonld":"https://4ort.xyz/entity/checkuser/facts.json","changes_api":"https://4ort.xyz/api/v1/knowledge/get_entity_changes?entity=checkuser","attention_api":"https://4ort.xyz/api/v1/knowledge/get_attention?entity=checkuser","wikidata":"https://www.wikidata.org/wiki/Q21676386","official_website":"https://www.mediawiki.org/wiki/Extension:CheckUser"},"trust_rules":{"wikidata-reference-support/2":"From the references in our copy of the statement: high = it cites a source (stated in P248, or a reference URL that is not Wikipedia); medium = only 'imported from Wikimedia project' or a Wikipedia URL; unscored = our copy holds no reference (older copies dropped references, so this is not evidence that Wikidata has none). Wikidata may hold more references than our copy shows. Reference support, not a probability."},"notes":["Our copy of this item's statements has not been checked against Wikidata since tracking began (2026-10-25); a newer value may exist."]}