# Jack Dorsey

id: ent_jack-dorsey  
wikidata: Q335552  
kind: person  
timeline: /timelines/jack-dorsey.md  
page: /record/jack-dorsey  
same_as: https://asof.is/record/jack-dorsey (how to cite the id: /identifiers.md)  

Jack Dorsey is an American computer scientist, entrepreneur and co-founder of Twitter. On the record, Jack Dorsey is CEO of Block, Inc., since 2009; Chair of Block, Inc.; and a founder of X.

## Key facts

- CEO: Block, Inc. (since 2009) · claim: /claim/clm_B0B046AB753C.md
- Chair: Block, Inc. · claim: /claim/clm_9F36F4947299.md
- Founder: X · claim: /claim/clm_10D57145AB79.md

## Questions

**What roles does Jack Dorsey hold?** CEO of Block, Inc. since 2009, Chair of Block, Inc. and Founder of X, as the AsOf record states with its sources.

**What is Jack Dorsey's role at Block, Inc.?** CEO since 2009 and Chair.

**What is Jack Dorsey's role at X?** Founder.

## Fact pages

One page per fact: the current value with its sources, then every dated value and what replaced what. Fetch any of them as markdown.

- [Jack Dorsey CEO roles](/record/jack-dorsey/ceo_of.md)
- [Jack Dorsey chair roles](/record/jack-dorsey/chair_of.md)
- [Jack Dorsey founder roles](/record/jack-dorsey/founder_of.md)

## Current state

What the record asserts: claims that held, valid by their sources or primary-sourced at confidence 0.7 or more. Unverified, disputed, retracted and review-marked claims are listed below, labelled, not here.

- [Jack Dorsey](/record/jack-dorsey.md) | ceo_of | [Block, Inc.](/record/block.md) | valid 2009-07-01 to present | conf 0.85 | valid | [clm_E94C4CA5C0E0](/claim/clm_E94C4CA5C0E0.md)
  sources: https://www.the-independent.com/tech/jack-dorsey-block-layoffs-ai-b2928612.html, https://www.sec.gov/Archives/edgar/data/1512673/000162828026027203/sq-20260423.htm, https://www.wikidata.org/wiki/Q110778747, https://www.sec.gov/Archives/edgar/data/0001512673/000121465926005714/o57260px14a6g.htm
- [Jack Dorsey](/record/jack-dorsey.md) | chair_of | [Block, Inc.](/record/block.md) | valid undated to present | conf 0.95 | valid | [clm_B65BC25E3B00](/claim/clm_B65BC25E3B00.md)
  sources: https://www.sec.gov/Archives/edgar/data/1512673/000162828026012254/xyz-20251231.htm
- [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

## All claims

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 Superseded claims stay visible.

- [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
- [Jack Dorsey](/record/jack-dorsey.md) | ceo_of | [Twitter, Inc.](/record/twitter-inc.md) | valid 2015-09-30 to 2021-11-29 | conf 0.85 | superseded | [clm_AFDF7C7A62D5](/claim/clm_AFDF7C7A62D5.md)
  sources: https://www.wikidata.org/wiki/Q1390577, http://www.europe1.fr/economie/jack-dorsey-confirme-aux-commandes-de-twitter-2524801, https://www.sec.gov/Archives/edgar/data/1418091/000156459015008279/twtr-8k_20150930.htm, https://www.sec.gov/Archives/edgar/data/1418091/000119312521342255/d401229d8k.htm, https://twitter.com/jack/status/1465347002426867720/photo/1
- [Jack Dorsey](/record/jack-dorsey.md) | ceo_of | [Block, Inc.](/record/block.md) | valid 2009-07-01 to present | conf 0.85 | valid | [clm_E94C4CA5C0E0](/claim/clm_E94C4CA5C0E0.md)
  sources: https://www.the-independent.com/tech/jack-dorsey-block-layoffs-ai-b2928612.html, https://www.sec.gov/Archives/edgar/data/1512673/000162828026027203/sq-20260423.htm, https://www.wikidata.org/wiki/Q110778747, https://www.sec.gov/Archives/edgar/data/0001512673/000121465926005714/o57260px14a6g.htm
- [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) | chair_of | [Block, Inc.](/record/block.md) | valid undated to present | conf 0.95 | valid | [clm_B65BC25E3B00](/claim/clm_B65BC25E3B00.md)
  sources: https://www.sec.gov/Archives/edgar/data/1512673/000162828026012254/xyz-20251231.htm

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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.