Blockstream CEO Adam Back (@adam3us) has once again pushed back against speculation surrounding the identity of Bitcoin's pseudonymous creator, this time rejecting renewed claims that Canadia
Blockstream CEO Adam Back (@adam3us) has once again pushed back against speculation surrounding the identity of Bitcoin's pseudonymous creator, this time rejecting renewed claims that Canadian developer Peter Todd is Satoshi Nakamoto.
The latest round of speculation was triggered after Todd recalled, in an unrelated post about proposed UK age limits for social media, that he had discussed Bitcoin-like systems with Back and Hal Finney as a teenager. The debate surfaced after Todd recalled discussing Bitcoin-like systems with Back and Finney as a teenager, raising the point while criticising proposed UK age limits for social media users. Todd's post stopped short of any authorship claim, despite coverage that framed it otherwise.
When one user interpreted Back's response as confirmation that Todd is Satoshi, Back rejected it directly, saying it was "no secret people were trying to discover bitcoin (then unnamed) in 1997 already." Back confirmed that Todd took part in research communities where such ideas circulated long before Satoshi's 2008 white paper.He pointed to a 1997 cypherpunks mailing list thread and a 2001 exchange between Todd and Finney on the peer-to-peer research list.
Back's broader argument is that Satoshi Nakamoto solved the double-spending problem by synthesising ideas developed across the cypherpunk community, including contributions from researchers like Hal Finney, Nick Szabo, and others. Familiarity with those discussions, he argues, does not make Todd their author. Back himself was on the receiving end of Satoshi's first known message, an email sent in August 2008 that flagged the Hashcash citation ahead of the white paper.
The exchange is the latest chapter in a years-long effort to unmask Bitcoin's creator. Three separate investigations published between October 2024 and April 2026 each named different suspects for the identity of Bitcoin's creator, but none presented cryptographic proof or showed movement of roughly 1.1 million bitcoins tied to early mining.
HBO's documentary "Money Electric: The Bitcoin Mystery" claimed that former Bitcoin developer Peter Todd is Satoshi Nakamoto.Todd told CNN flatly: "For the record, I'm not Satoshi," and accused the film of being "irresponsible" and putting his life in danger.After the documentary aired, Todd was reportedly forced into hiding due to credible threats linked to the billions in dormant $BTC associated with the pseudonym.
A separate New York Times investigation published in April 2026 identified Back, the inventor of the Hashcash proof-of-work system, as the most likely person behind the Satoshi Nakamoto pseudonym.Back said that overlaps between his decades of work on cryptography and electronic cash, and Bitcoin's design, reflect shared cypherpunk ideas and coincidence, not hidden authorship.
The true mystery surrounding Satoshi Nakamoto remains unsolved, as long as no cryptographically verifiable signature is presented.Experts often point out that the only definitive proof would be access to Satoshi's original Bitcoin holdings, believed to be worth billions. Those wallets have remained untouched since 2011.
Sources:BeInCrypto: A 1997 Mailing List Holds a Clue to the Satoshi PuzzleCoinDesk: Adam Back Denies He's Satoshi Nakamoto After NYT ReportCNN: Peter Todd Denies He Invented Bitcoin
