A year-long investigation by The New York Times has identified Adam Back, a 55-year-old British cryptographer, as the strongest candidate yet for Bitcoin (BTC) creator Satoshi Nakamoto.

The case is built on writing analysis, technical overlaps and a buried trail of decade-old mailing-list posts that appear to outline the cryptocurrency's blueprint.

Adam Back's Cypherpunk Trail

Reporters John Carreyrou and Dylan Freedman spent more than a year sifting through thousands of posts across three cryptographic mailing lists where the Cypherpunks — a group of privacy-focused anarchists formed in the early 1990s — congregated. They merged the archives into a single searchable database containing 134,308 posts from 620 users who had discussed digital money.

Between 1997 and 1999, Back proposed an electronic cash system with five attributes that later became core to Bitcoin: privacy for both payer and payee, a decentralized node network, built-in scarcity, trustlessness and a publicly verifiable protocol.

He then suggested combining his own invention, Hashcash, with another Cypherpunk's electronic cash concept called b-money — the exact combination Satoshi later used.

Back also anticipated Bitcoin's inflation solution, proposing that minting coins should "require more computational effort over time."

He even pre-empted the cryptocurrency's most common criticism by arguing that the energy cost would be lower than traditional banking — the same defense Satoshi offered a decade later.

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Writing Analysis Points to Back

The investigation's most striking findings came from forensic text analysis. The reporters ran three separate writing comparisons against the mailing-list database, and all three pointed to Back as the closest match for Satoshi.

One approach focused on grammatical tics shared by both writers.

Both confused "it's" and "its," placed "also" at the end of sentences and misused hyphens in identical ways.

Both alternated between British and American spellings — "cheque" and "check," "e-mail" and "email" — and wrote "bugfix" as one word instead of two.

A computational analysis of hyphenation errors found Back shared 67 of Satoshi's 325 distinct mistakes.

The next closest suspect had 38. Florian Cafiero, a computational linguist who previously helped the Times identify the people behind QAnon, ran a separate stylometry test and found Back was the closest match to the Bitcoin white paper — though he called the result inconclusive.

Disappearance Pattern and Denials

The timeline also raised questions.

For more than a decade, Back had been one of the most vocal participants whenever electronic cash was discussed on the Cypherpunks list. But when Bitcoin was announced in late 2008 — the closest realization of his own proposals — he went silent.

His first public comment about Bitcoin came in June 2011, six weeks after Satoshi's famous disappearance.

Back denied being Satoshi and dismissed the evidence as coincidental.

When the reporters asked him for metadata from emails he had exchanged with Satoshi — records that could clarify whether the messages were genuine or self-addressed — Back stopped responding. He holds a doctorate in distributed computer systems, used the same programming language as Satoshi and built Blockstream, a company now valued at $3.2B that has raised $1B in funding.

The investigation ruled out several other prominent suspects, including Nick Szabo, Hal Finney, Len Sassaman and Peter Todd, citing alibis, technical gaps or the fact that some had died before Satoshi's final known communication in 2015.

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