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Who is Satoshi Nakamoto, Bitcoin's mystery creator?
The true identity of Satoshi Nakamoto, the inventor of Bitcoin, has remained a mystery since 2008. Has he been hiding in plain sight all along?
The true identity of Satoshi Nakamoto – the pseudonymous inventor of Bitcoin – is perhaps "the biggest unsolved mystery of the technology world", says Satyen Bordoloi on Sify.com. For 18 years, Nakamoto has been searched for, speculated about and occasionally wrongly outed. But could he/she/they have been hiding in plain sight all along?
That is the contention of New York Times journalist John Carreyrou, who believes he has finally established the true identity of the inventor of Bitcoin, Satoshi Nakamoto. He points the finger at Adam Back – a mild-mannered 55-year-old British developer, with the air of “a dishevelled mathematician”, who was active in the cryptocurrency from its inception in 2008 and has since “built a mini empire of Bitcoin-related companies and become one of the community's most influential members”.
Back, who is based in Malta, has been named before and he denies the charge. What triggered Carreyrou's two-year investigation was an appearance he made as an expert witness on a 2024 HBO documentary Money Electric. Carreyrou found the film's contention that Satoshi Nakamoto was the Canadian crypto expert Peter Todd unconvincing. But a scene showing Back “fidgeting” nervously when asked if he was Satoshi Nakamoto was a light-bulb moment. He now claims that forensic linguistic analysis shows “striking similarities” between Back's emails and posts and Satoshi's known output – and also in their shared enthusiasms, bugbears, coding preferences and esoteric knowledge. Back dismisses Carreyrou's evidence.
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“Whatever the truth” about Adam Back's contribution, he certainly “helped shape the ideas behind the cryptocurrency”, says The Sunday Times. The melting pot from which bitcoin eventually emerged was a 1990s libertarian movement that called itself Cypherpunk – an international group of mathematicians, cryptographers, coders and anarchists who met online and debated on early internet forums. At the time, Back was a PhD student in computer science at the University of Exeter.
Adam Back, co-founder and chief executive officer of Blockstream
(Image credit: Ronda Churchill/Bloomberg via Getty Images)
It was a fellow student who alerted Adam Back to a free encryption program called PGP (“Pretty Good Privacy”), which people used to avoid surveillance. Money was in the Cypherpunks' sights from the beginning. “To me, crypto anarchy is a means to achieve a more libertarian government,” Back wrote in 1996 – a decentralising message echoed in the white paper Satoshi Nakamoto wrote when he introduced his “Peer-to-Peer Electronic Cash System” more than a decade later. Satoshi Nakamoto also used Hashcash – “a statistical, puzzle-solving system” invented by Adam Back – to mine the first bitcoins. An early clue to Satoshi Nakamoto's nationality – seized upon by some – was his use of a British expletive.
Despite regular appearances at industry events, Adam Back remains guarded about his personal life and privacy, says The Sunday Times. The Carreyrou thesis has cast an unwelcome spotlight. Like The Economist, Back believes that if Satoshi Nakamoto was exposed as a real person, “the world of bitcoin would lose much of its magic”.
Carreyrou remains convinced he's found “the right man”, but we've been here before. Ultimately, the only means of proving Satoshi Nakamoto's identity is “cryptographic”, says Sify. Without evidence of a “private key signature”, or “verified movement of Satoshi's wallets”, even the most forensic investigation is nothing more than a “hypothesis”. The identity of the inventor of Bitcoin remains a mystery.
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Jane writes profiles for MoneyWeek and is city editor of The Week. A former British Society of Magazine Editors (BSME) editor of the year, she cut her teeth in journalism editing The Daily Telegraph’s Letters page and writing gossip for the London Evening Standard – while contributing to a kaleidoscopic range of business magazines including Personnel Today, Edge, Microscope, Computing, PC Business World, and Business & Finance.
