British Cryptographer Denies He's Bitcoin's Mysterious Creator

The Investigation

A report in The New York Times said Blockstream CEO Adam Back is most likely the pseudonymous creator of bitcoin known as Satoshi Nakamoto , though Back, an early figure in the bitcoin community, denies he is Nakamoto . John Carreyrou — the author of the investigation, who rose to fame after breaking open the Theranos story in 2015 — points to similar phrasing, spelling and grammar between Back's and Satoshi's posts in early online forums, overlapping timelines of online activity and Back's early work on Hashcash, a proof-of-work system crucial for bitcoin mining .

Pulitzer Prize-winning reporter John Carreyrou's investigation took shape over more than a year, during which he sifted through thousands of decades-old internet postings. Working with the outlet's AI projects editor Dylan Freedman, Carreyrou assembled email archives from three Cypherpunk mailing lists spanning roughly 1992 to 2008, merged them into a single database, and subjected the combined record to three distinct writing analyses — each of which returned Back as the top match for Satoshi . The investigation cataloged a range of stylistic fingerprints in Satoshi's writing — double-spacing after periods, British spellings, a hyphenated "double-spending," and an inconsistent toggle between "e-mail" and "email" — and found that no one else across the hundreds of subscribers to those lists replicated every one of them. Back did .

The Times also commissioned stylometric analysis from Florian Cafiero, a computational linguist who previously helped the paper identify the people behind the Qanon movement. After comparing papers from 12 Satoshi suspects against the Bitcoin white paper, Cafiero found Back the closest match. He also said the result was inconclusive and that Hal Finney was nearly tied for the top spot .

The Denial and Pushback

"Today's New York Times story is built on circumstantial interpretation of select details and speculation, not definitive cryptographic proof," Blockstream said in a statement. "Dr. Adam Back has consistently stated that he is not Satoshi Nakamoto." "Ultimately, it doesn't prove anything," Back said in the Times article. "And I will reassure you, it's really not me."

Odd Lots co-host and Bloomberg columnist Joe Weisenthal voiced doubts on X, writing that he was "not 100 percent convinced by the evidence or the conclusion." He raised two specific objections: that punctuation habits are too inconsistent across writers to serve as reliable identifiers, and that it was hard to reconcile a scenario in which Back attached his name to foundational prior work such as Hashcash but then operated under total anonymity for Bitcoin itself .

The crypto community was not impressed by the Times' article. "This kind of pointless unmasking journalism paints a massive target on a real person for absolutely no public benefit," one individual responded to the journalist's story. If your case begins and ends with 'same circles, same vocabulary, same era,' it's less of a revelation but a case of fan fiction with potential collateral damage .

The Stakes

Whoever is behind the pseudonym may still control a Bitcoin wallet holding more than one million BTC, currently valued at approximately 70 to 78 billion US dollars. Satoshi would thereby be one of the wealthiest people in the world . In Back's case, an additional dimension comes into play: he is currently CEO of Bitcoin Standard Treasury Company, which holds more than 30,000 BTC and is planning a stock market listing via a SPAC merger. Under US securities law, a confirmed identity as Satoshi could constitute material information subject to disclosure requirements .

Gregory said the longer the search continues, the more extreme the theories become. He added that many reporters miss key parts of Bitcoin's early history and make avoidable errors. He also warned that publicly identifying Satoshi could put that person and their family at risk .

The Mystery Continues

The yearlong investigation is far from the first attempt to unveil Nakamoto's identity . The question of Satoshi's identity has drawn speculation for years. Several 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, one high-profile documentary pointed to developer Peter Todd, who denied the claim .

The true mystery surrounding Satoshi Nakamoto thus remains unsolved, as long as no cryptographically verifiable signature is presented . While Carreyrou's investigation represents one of the most thorough attempts to date, the lack of definitive proof and the heated pushback from the crypto community suggest that Bitcoin's creator will likely remain in the shadows. The real test may come if Back's company goes public and he faces legal requirements to disclose any material information—including whether he controls the world's most valuable cryptocurrency fortune