Quick Take
  • The investigation applied three separate writing analyses.
  • All three pointed to Back as the closest match for Satoshi’s writing style.
  • The team identified 325 distinct hyphenation errors in Satoshi’s corpus and found Back shared 67 of them.
  • He also suggested combining his Hashcash invention with Wei Dai’s b-money concept, which is exactly the combination Satoshi used to build Bitcoin.

What Happened

The New York Times published a year-long investigation on April 8, arguing that Blockstream CEO Adam Back, 55, is the most likely candidate for Bitcoin creator Satoshi Nakamoto, based on writing analysis and archival research spanning 34,000 mailing list users.

Reporter John Carreyrou, known for his Theranos investigation, spent over a year analyzing Satoshi’s known writings alongside thousands of posts from three cryptography mailing lists active between 1992 and 2008.

The investigation applied three separate writing analyses. All three pointed to Back as the closest match for Satoshi’s writing style.

The investigation highlighted that Back outlined nearly every core Bitcoin feature on the Cypherpunks list between 1997 and 1999, a full decade before Satoshi published the whitepaper.

However, when Satoshi announced Bitcoin in late 2008, Back went silent. He did not publicly comment on Bitcoin until June 2011, six weeks after Satoshi vanished.

Market Context

On X (Twitter), Back posted a separate response on April 8. He attributed the overlap to confirmation bias, noting his high volume of posts on the Cypherpunks list made it statistically likely he would appear in searches for electronic cash-related phrases.

Why It Matters

He also suggested combining his Hashcash invention with Wei Dai’s b-money concept, which is exactly the combination Satoshi used to build Bitcoin.

Under U.S. securities law, a confirmed identity as Satoshi, with access to an estimated 1.1 million BTC worth over $78 billion, could constitute material information requiring disclosure.

Details

Back, a British cryptographer who invented the Hashcash proof-of-work system cited in Bitcoin’s white paper, denied the claim and attributed the evidence to coincidence.

How the NYT Built Its Case Against Adam Back

With the help of AI projects editor Dylan Freedman, the team built a database of 134,308 posts from 620 candidates who had discussed digital money on the Cypherpunks, Cryptography, and Hashcash lists.

One analysis focused on grammatical quirks. The team identified 325 distinct hyphenation errors in Satoshi’s corpus and found Back shared 67 of them. The second-closest match had 38.

A filtering process that screened for traits like British spellings, double-spacing between sentences, specific hyphenation patterns, and alternating usage of terms like “e-mail” and “email” narrowed the pool from 620 suspects to one person. That person was Back.

The Technical and Behavioral Overlap

In those posts, Back proposed a decentralized electronic cash system with privacy for payer and payee, built-in scarcity, no trust requirement, and a publicly verifiable protocol.

The behavioral pattern also drew scrutiny. For over a decade, Back regularly participated in electronic cash discussions on the mailing lists.

Back later claimed on a podcast that he had participated in the 2008 discussion sparked by Satoshi’s white paper. The NYT found no evidence of this in the mailing list archives.

Back Denies the Claims, Cites Confirmation Bias

Carreyrou confronted Back in person at a Bitcoin conference in El Salvador in January 2026. Over a two-hour meeting, Back repeatedly denied being Satoshi.

“It’s not me, but I take what you’re saying that this is what the A.I. said with the data. But it’s still not me,” wrote Back in a post.

However, the reporter noted what he interpreted as a verbal slip. When Carreyrou mentioned Satoshi’s quote about being “better with code than with words,” Back responded as though he had written it himself.

He also argued that Satoshi’s anonymity benefits Bitcoin by helping it be viewed as a new asset class.

The timing adds a layer of complexity. Back is currently CEO of Bitcoin Standard Treasury Company (BSTR), which holds over 30,000 BTC.

The company is awaiting shareholder approval to go public via a SPAC merger with Cantor Equity Partners.