Block

Block, Inc., founded in 2009 by Jack Dorsey and Jim McKelvey as Square, builds financial tools around Square, Cash App, Afterpay and TIDAL. Headquartered in Oakland with a distributed workforce, Block serves 56M+ Cash App actives and millions of sellers, processing $200B+ annualized. Its TBD unit builds open developer infrastructure for Bitcoin and Web3, including Bitkey self-custody. The culture emphasizes craft, inclusive design and building systems that expand economic access. Block continues expanding Cash App, TBD decentralized identity protocols, and Bitkey self-custody hardware to make Bitcoin and open financial services accessible to everyone worldwide. Block operates with open-source development practices, publishing decentralized identity specs and supporting Bitcoin core developer grants worldwide.