Adam Back is a cryptographer and cypherpunk who founded Hashcash, a proof-of-work system first proposed on the cypherpunks mailing list in 1997 that Satoshi Nakamoto cited directly in the Bitcoin whitepaper as the foundational mechanism for Bitcoin mining. Adam Back's TwitterScore is 629 out of 1000, ranking him #166 out of 364,257 accounts tracked on this platform.

Adam Back co-founded Blockstream in 2014 and works there as CEO; the company raised $21 million in seed funding at launch and secured a $210 million convertible note financing round led by Fulgur Ventures in October 2024, aimed at Layer-2 growth and Bitcoin treasury expansion. Adam Back also co-founded Bitcoin Standard Treasury Company (BSTR) and works there as CEO; BSTR holds 30,021 BTC and announced a business combination in July 2025 with Cantor Equity Partners I, a SPAC connected to Cantor Fitzgerald, to list on Nasdaq. He holds a PhD in Computer Science from the University of Exeter and was among the first people contacted by Satoshi Nakamoto in 2008, receiving an email asking how to correctly cite Hashcash before Bitcoin's public release. Adam Back's portfolio includes Capital B.

Adam Back was the subject of a prominent allegation in April 2026 when a New York Times investigation, based on writing-style analysis of cypherpunk mailing-list emails, alleged he was the most likely person behind the Satoshi Nakamoto pseudonym. He publicly denied the claim in a CNBC interview, and the investigation's own linguist described the results as inconclusive. Adam Back has made 70,217 posts on the platform. Adam Back has been mentioned by 1,263 accounts, with 6,955 total mentions.

Smart Followers

Adam Back has 896,426 followers on X. The accounts that follow Adam Back include 2,287 founders, 416 angel investors, 1,262 influencers and 137 VCs, among them Balaji, Brian Armstrong, Marc Andreessen, Toly, Ansem and ZachXBT.