Adam Back has dismissed claims that he is Satoshi Nakamoto after a New York Times story claimed the British cryptographer is the strongest contender for Bitcoins yet. pseudonym creator.
In a post on X after the article was published, Back said his long record in cryptography, privacy tools and electronic cash research explains why journalists keep finding connections between his work and Bitcoin’s design.
“I’m not satoshi,” Back wrote. He said he had been “laser-focused early on on the positive societal implications of cryptography, online privacy and electronic cash” and that his work from around 1992 onwards, including discussions on the cypherpunk mailing list, led to Hashcash and other ideas that later reverberated in Bitcoin.
Back, NYT reporter John Carreyrou said, had found “many interesting bitcoin analogs in early attempts to create a decentralized ecash,” adding that early researchers explored concepts like peer-to-peer systems, proof-of-work and routing models that looked like prototypes for Bitcoin.
He also disputed a line in the story that treated a comment he made in an interview as a possible slip. Back’s remark—”I’m not saying I’m good with words, but I’ve actually done a lot of yakking on these lists”—referred to confirmation bias. Because he wrote so often about electronic cash, he said, his old comments are easier to match with Satoshi’s than those of others who have written far less.
“The rest is a combination of coincidences and similar phrases from people with similar experiences and interests,” Back wrote.
He added that he doesn’t know who Satoshi is and said it could be good for Bitcoin. In his view, the mystery helps frame Bitcoin as “a new asset class, the mathematically scarce digital commodity.”
Others also questioned the conclusions. Joe Weisenthal, a Bloomberg columnist and co-host of the Odd Lot’s podcast, said he was “not 100% convinced by the evidence or the conclusion.”
“The stylometry is interesting, but in substance all the cypherpunks had similar thoughts about politics and privacy and the architecture of the Internet,” he wrote on X. He also questioned why Back would talk openly about past work like Hashcash under his real name, but use strict anonymity for Bitcoin.
“None of us are that consistent with hyphenation,” Weisenthal added, arguing that shared writing characteristics might not be meaningful. He noted that Back was already among those closest to gathering Bitcoin-like ideas before launch, which could explain his later involvement.
The question of Satoshi’s identity has fueled speculation for years. Numerous books, documentaries, and articles have claimed to have solved it, only for those cases to unravel or fail to persuade the wider Bitcoin community. In 2024, a high-profile documentary pointed to developer Peter Todd, who denied the claim.
Nicholas Gregory, a UK-based early Bitcoin participant, also pushed back on the latest theory.
“I do not believe that Adam Back is Satoshi based on my personal interactions with him,” Gregory said. “But if he was, we’d have to respect the extraordinary lengths he’s gone to to make sure no one thinks it’s him. In that case, we should respect his clear desire for privacy.”
Gregory said the longer the search continues, the more extreme the theories become. He added that many journalists miss important parts of Bitcoin’s early history and make avoidable mistakes.
He also warned that publicly identifying Satoshi could put that person and their family at risk.
