# Jack Dorsey

> Jack Dorsey is the co-founder of Twitter and Square (now Block), a Bitcoin maximalist, and one of Silicon Valley's most enigmatic figures. He sent the first-ever tweet, built a payments empire, walked 5.3 miles to work daily, meditates two hours a day, eats once a day, and is currently obsessed with decentralizing everything from money to social media. His latest ventures - Bitchat (Bluetooth mesh messaging) and Block's Bitcoin treasury - reveal a builder who has moved far beyond the platforms that made him famous.

- **Role:** CEO at Block, Inc.
- **Organizations:** Block, Inc., Twitter (co-founder, former CEO), Nostr, Bitchat, Spiral, Bitkey, Cash App, TIDAL, OCEAN (seed funder)
- **From:** St. Louis, Missouri, USA
- **Nationality:** American
- **Education:** High School Diploma, Bishop DuBourg High School, Transferred (Computer Science), University of Missouri-Rolla, Dropped out (one semester before graduation), New York University
- **Known for:** Sent the world's first tweet (March 21, 2006: 'just setting up my twttr'), Co-founded Twitter, reshaping global communication and real-time news, Co-founded Square (now Block), processing $241B in payments annually for 57M users

## Career timeline

- **1991** — Age 15: Wrote dispatch routing software for taxicab companies, used for decades
- **2000** — Founded web-based dispatching company in Oakland for couriers, taxis, and emergency services
- **2006** — Co-founded Twitter with Noah Glass, Evan Williams, and Biz Stone; became first CEO; sent the first tweet ever on March 21
- **2008** — Departed as Twitter CEO; became Chairman of the Board; named MIT Technology Review TR35 top innovator
- **2009** — Co-founded Square with Jim McKelvey after McKelvey couldn't accept a credit card for a glass art sale
- **2010** — Launched Square's iconic white card reader dongle for smartphones
- **2012** — Square valued at $3.2 billion; named WSJ Innovator of the Year and TechCrunch Founder of the Year
- **2013** — Joined Disney Board of Directors; publicly aspired to become Mayor of New York City
- **2015** — Returned as permanent Twitter CEO; Square IPO on NYSE
- **2018** — Left Disney board; testified before Congress wearing popped-collar shirt
- **2020** — Pledged $1 billion (28% of net worth) to COVID relief, UBI pilots, and girls' education
- **2021** — Block acquired TIDAL; rebranded Square to Block, Inc.; resigned as Twitter CEO
- **2022** — Joined Bluesky board; left Twitter board entirely; Elon Musk acquired Twitter for $44B
- **2024** — Left Bluesky board citing centralization concerns; called X 'freedom technology'
- **2025** — Launched Bitchat (Bluetooth mesh messaging app); donated $10M to Nostr; backed diVine (Vine reboot); Block unveiled Proto Rig Bitcoin miner
- **2026** — Block cut 40% of workforce (~4,000 jobs) citing AI; Block treasury reached ~9,000 BTC (~$2.2B)

## Achievements

- Sent the world's first tweet (March 21, 2006: 'just setting up my twttr')
- Co-founded Twitter, reshaping global communication and real-time news
- Co-founded Square (now Block), processing $241B in payments annually for 57M users
- Led Square's NYSE IPO in 2015
- Pledged $1 billion to COVID relief, UBI, and girls' education in 2020
- Built Block into a Bitcoin-first fintech empire with ~9,000 BTC in treasury
- Launched Bitchat, used by protesters in Madagascar with 70,000 downloads in one week
- MIT Technology Review TR35 Top Innovator (2008)
- WSJ Innovator of the Year, Technology (2012)
- TechCrunch Founder of the Year (2012)
- Donated $10M to Nostr open-source social protocol development
- Funded OCEAN, a decentralized Bitcoin mining pool

## Latest updates

- **2026-04** — Block launched Bitcoin proof-of-reserves feature; treasury nears 9,000 BTC (~$2.2B)
- **2026-02** — Block announced 40% workforce reduction (~4,000 jobs) citing AI replacement of human roles
- **2025-11** — Backed diVine, a Vine reboot built on Nostr with 100,000 archived six-second Vine videos; bans AI content
- **2025-09** — Bitchat reached 70,000 downloads in Madagascar in one week after being used by protesters
- **2025-08** — Block unveiled Proto Rig, a modular Bitcoin mining system to challenge Bitmain's market dominance
- **2025-07** — Launched Bitchat, a Bluetooth mesh messaging app requiring no internet, accounts, or central servers; donated $10M to Nostr
- **2024-05** — Left Bluesky board citing centralization concerns; called X 'freedom technology' on same day, sparking controversy

## Links

- LinkedIn: https://www.linkedin.com/in/jack-dorsey-52409b243/
- Twitter/X: https://x.com/jack
- GitHub: https://github.com/jackjack

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Profile page: https://yespress.io/jack-dorsey
Published by YesPress — https://yespress.io
Last updated: 2026-04-28