# Jack Dorsey founder roles

entity: /record/jack-dorsey.md  
predicate: founder_of  
page: /record/jack-dorsey/founder_of  
as_of: 2026-11-08  
cite: AsOf. "Jack Dorsey founder of: X", undated. Claim clm_0A9E8895ACF7, https://asof.is/claim/clm_0A9E8895ACF7, accessed 2026-11-08. Source: https://research.contrary.com/company/x.  

As of November 8, 2026, the AsOf record says Jack Dorsey is a founder of X, from 2 secondary sources (research.contrary.com and europe1.fr).

3 claims on Jack Dorsey's founder roles, 3 open and 0 superseded, each dated and sourced; a replaced value is closed with an end date, never deleted.

## Current founder roles

What the record asserts on 2026-11-08.

- [Jack Dorsey](/record/jack-dorsey.md) | founder_of | [X](/record/x.md) | valid undated to present | conf 0.80 | valid | [clm_0A9E8895ACF7](/claim/clm_0A9E8895ACF7.md)
  sources: https://research.contrary.com/company/x, http://www.europe1.fr/economie/jack-dorsey-confirme-aux-commandes-de-twitter-2524801, https://www.wikidata.org/wiki/Q918

## Every dated value

One claim per line, oldest first. Superseded claims stay visible.

- [Jack Dorsey](/record/jack-dorsey.md) | founder_of | [Block, Inc.](/record/block.md) | valid 2009-02-01 to present | conf 0.80 | unverified | [clm_DD74172A57D4](/claim/clm_DD74172A57D4.md)
  sources: https://www.wikidata.org/wiki/Q110778747, https://www.bitstamp.net/learn/company-profiles/what-is-block-inc/
- [Jack Dorsey](/record/jack-dorsey.md) | founder_of | [X](/record/x.md) | valid undated to present | conf 0.80 | valid | [clm_0A9E8895ACF7](/claim/clm_0A9E8895ACF7.md)
  sources: https://research.contrary.com/company/x, http://www.europe1.fr/economie/jack-dorsey-confirme-aux-commandes-de-twitter-2524801, https://www.wikidata.org/wiki/Q918
- [Jack Dorsey](/record/jack-dorsey.md) | founder_of | [Bluesky](/record/bluesky.md) | valid undated to present | conf 0.80 | unverified | [clm_807D7941E67D](/claim/clm_807D7941E67D.md)
  sources: https://www.wikidata.org/wiki/Q78194383, https://gulfnews.com/special-reports/bluesky-boom-users-flee-elon-musks-chaotic-x-1.1731887224997

## Questions this record answers

### What is Jack Dorsey founder of?

X, as the record asserts on November 8, 2026, from 2 secondary sources (research.contrary.com and europe1.fr).


## Read on

- This page: /record/jack-dorsey/founder_of (markdown: /record/jack-dorsey/founder_of.md)
- Entity twin: /record/jack-dorsey.md · timeline: /timelines/jack-dorsey.md

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AsOf is a temporal fact ledger: a structured, dated, sourced record of what is true and what changed, built for AI retrieval.