Piete Brooks

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Event August 20, 2008 Added March 1, 2026 Updated November 9, 2026 Biography

Adam Back (1970–) — Inventor of Hashcash and the first person Satoshi Nakamoto contacted

British cryptographer and cypherpunk (born 1970) who invented Hashcash (1997). The first known person Satoshi contacted about Bitcoin (August 20, 2008). Co-founded Blockstream in 2014.