Dorsey, along with co-founder Jim McKelvey, developed a small business platform to accept debit and credit card payments on a mobile device called Square, released in May 2010. The small, square-shaped device attaches to Android, iPad, iPhone, or iPod Touch devices via the headphone jack, and as a mini card reader, allows a person to swipe their card, choose an amount to transfer to the recipient and then sign their name for confirmation. Square is also a system for sending paperless receipts via text message or email, and is available as a free app for Android and iOS.[64][65] The company grew from 10 employees in December 2009[66] to over 100 by June 2011. Square's office is on Market Street in San Francisco.[67] In September 2012, Business Insider magazine valued Square Inc. at US$3.2 billion.[68] Dorsey is CEO of Square, Inc.[69] On October 14, 2015, Square filed for an IPO to be listed on the New York Stock Exchange.[70] As of that date, Dorsey owned 24.4 percent of the company.[71] In March 2020 the FDIC permitted Square to open a bank. It announced plans to launch Square Financial Services in 2021.[72] In May 2020, Dorsey announced that employees of Square would permanently become remote workers.[73] In 2020, for months, Square began withholding up to 30 percent of the funds that merchants collected from customers using its Cash App.[74] On December 1, 2021, CEO Jack Dorsey officially changed the name of the platform to Block, Inc. This was due in part to his interest in the blockchain as well as the new name encompassing the various businesses better than the current name, which is mostly associated with its merchant-payment services. The stock ticker for Block, Inc. would remain "SQ".[75] Bluesky edit In February 2022, Dorsey joined the board of directors of Bluesky,[76] a Twitter spin-off developing a decentralized social networking protocol and app.[77][78] In May 2024, he announced he was no longer on the board of directors.[79][80][81] He instead endorsed X (formerly Twitter), which he called "freedom technology".[82] In a 2024 interview, Dorsey said that Bluesky's shift toward a traditional corporate structure and the introduction of centralized moderation tools were major factors behind his leaving the company.[83] Digital currency edit Dorsey is one of the few persons who are speculated to be Satoshi Nakamoto, the creator of Bitcoin.[84] Other projects edit In 2013, Dorsey expressed his admiration of Michael Bloomberg to CNN,[85] and said he aspires to become mayor of New York City.[85] He served as a judge for Bloomberg's NYC BigApps competition in 2011.[86] On December 24, 2013, Dorsey was announced as a new member of the board of directors of The Walt Disney Company.[87] In January 2018, it was reported that Dorsey would not seek reelection at Disney's March annual meeting, due to increased difficulty with conflicts of interest.[88] Dorsey is a board member of the Berggruen Institute's Governance Center.[2] Dorsey gives advice in a chapter of Tim Ferriss' book Tools of Titans.[89][90][91] Dorsey is a vocal Bitcoin advocate, and has spoken at Bitcoin conferences such as "The B Word". He has said that if he were not working on Twitter and Square, he would be working on Bitcoin.[92] He also endorses and financially supported the development of the Nostr social networking protocol.[93][94] In 2023, Dorsey provided the seed funding for OCEAN, a Bitcoin mining pool with the stated goal of decentralizing Bitcoin mining by giving miners the ability to select or construct their own block templates, reducing reliance on centralized pool operators.[95][96] In 2025, Dorsey launched a peer-to-peer messaging app called Bitchat, which uses Bluetooth mesh networking to connect nearby users without the need for an internet connection.[97][98] In November 2025, Dorsey announced he is backing a new app called diVine based on the defunct Vine platform.[99] Personal life edit In 2012, Dorsey moved to the Sea Cliff neighborhood of San Francisco.[100] Meditation edit In 2015, Dorsey said he began his mornings with meditation.[101] In late 2017, Dorsey completed ten days of meditation known as Vipassanā taught by followers of S. N. Goenka.[102][103] In November 2018, Dorsey went on a birthday Vipassanā meditation trip to Myanmar.[104] Politics edit In 2019, Dorsey contributed financially to the campaigns of 2020 Democratic presidential candidates Tulsi Gabbard and Andrew Yang.[105] In 2020, he donated $15 million to 29 mayors pursuing the piloting of guaranteed basic income programs in the United States. Until 2021, Dorsey applied "world leader" exceptions that enabled Donald Trump to post content on Twitter that would normally be removed or generate sanctions per the platform's rules. In May 2020, some of Trump's tweets received warning labels, and from Election Day 2020, more flaggings were applied to his tweets.[106] On January 6, 2021, after Trump supporters stormed the U.S. Capitol, Twitter applied a 12-hour timeout to Trump's account for violating its Civic Integrity policy. Trump's account was suspended permanently on January 8 based on a review of his posts' content and context.[107] On January 14, Dorsey defended banning Trump but also said it "sets a precedent I feel is dangerous".[108] In June 2023, Dorsey endorsed Robert F. Kennedy Jr. in his campaign to become the Democratic party nominee in the 2024 United States presidential election.[109][110][111] In 2024, Dorsey tweeted in support of Gaza war protests in the United States, Vietnam war protests, and Iraq war protests.[112]