TLDR
- Adam Back rejected the central theory presented in the Finding Satoshi documentary.
- The film claims Hal Finney and Len Sassaman jointly created Bitcoin.
- Adam Back said timezone data contradicts Len Sassaman’s alleged role.
- He argued that forum activity logs do not match Sassaman’s schedule in Belgium.
- Back stated that Hal Finney acted only as Bitcoin’s first user and tester.
A new documentary has reignited debate over the identity of Bitcoin’s creator. However, Blockstream CEO Adam Back has publicly rejected its central theory. He argues that timezone data and activity logs contradict the film’s conclusions.
Bitcoin Documentary Proposes Finney and Sassaman Partnership
Directors Tucker Tooley and Matthew Miele released “Finding Satoshi” after more than four years of research. The film argues that Satoshi Nakamoto was not one person. Instead, it presents Hal Finney and Len Sassaman as joint creators of Bitcoin.
The documentary assigns distinct roles to each figure in its theory. It claims Finney wrote the Bitcoin code and Sassaman drafted the whitepaper. The filmmakers support their claim with linguistic analysis and shared cryptography work.
They cite Sassaman’s use of British English as a key clue. They also reference the pair’s involvement in PGP development. Furthermore, they compare online activity records with early Bitcoin forum posts.
Len Sassaman lived in Belgium while pursuing a doctorate at KU Leuven. Meanwhile, Hal Finney resided in the United States during Bitcoin’s early development. The film suggests that coordinated efforts bridged their geographic distance.
The creators rely on circumstantial evidence rather than direct proof. They argue that writing style and timing patterns reveal collaboration. They maintain that their investigation offers the clearest account so far.
Adam Back Rejects Bitcoin Creator Theory Over Timezone Gaps
Adam Back responded after The New York Times described him as a likely Satoshi candidate. He has consistently denied any involvement in creating Bitcoin. Now, he has labeled the film’s theory as “strange” and contradictory.
Back argues that forum timestamps conflict with Sassaman’s daily schedule in Europe. He states that Satoshi’s posting hours do not match Belgian time patterns. Therefore, he claims the timezone data undermines the theory.
He also questions the division of responsibilities between Finney and Sassaman. Back points to moments when Finney participated in public events. He notes that Satoshi remained active online during those times.
For example, Finney ran a marathon while Satoshi posted messages. Back says this overlap weakens claims of coordinated authorship. He insists that Finney acted only as Bitcoin’s first user and tester.
Back maintains that Finney did not co-author the system. He stresses that historical records support this position. He continues to deny any personal link to the Satoshi identity.
Despite Back’s criticism, the film has drawn praise from industry leaders. Coinbase CEO Brian Armstrong called it “the deepest look into the issue.” Entrepreneur Mark Cuban described it as “very high quality and thought-provoking.”
The debate over Bitcoin’s origin has persisted since 2009. However, the identity of Satoshi Nakamoto remains unconfirmed. Back’s latest comments have added new details to the ongoing public discussion.
