On April 22, 2026, Finding Satoshi — a documentary directed by Tucker Tooley and Matthew Miele, with business writer William D. Cohan and private investigator Tyler Maroney as primary investigators — proposed a two-person reading of the Satoshi Nakamoto pseudonym: cypherpunk cryptographers Hal Finney (1956–2014) and Len Sassaman (1980–2011) as co-creators of Bitcoin. Under the documentary’s framing, Finney wrote the code and Sassaman drafted the whitepaper.
The “two-person Satoshi” framing:
The film’s central claim is that Satoshi Nakamoto fronted a collaboration between Finney and Sassaman rather than a single individual. The proposed labor split: Finney handled implementation (codebase, early node operation, the 10 BTC test transaction) and Sassaman drafted the foundational paper. The reading extends the individual Finney = Satoshi hypothesis and the individual Sassaman = Satoshi hypothesis into a joint reading.
Lines of evidence presented:
- Activity-window analysis by Alyssa Blackburn. Data scientist Alyssa Blackburn analyzed online activity histories of the principal suspects and reportedly found a 6am–10pm PST posting window that fits the Finney + Sassaman pair more closely than any single individual in the field.
- Family testimony. Hal’s widow Fran Finney conceded in the film that her husband “probably played a role in Bitcoin’s creation.” Sassaman’s widow Meredith L. Patterson also appears on record.
- Motivation profile by Kathleen Puckett. Former FBI profiler Kathleen Puckett (known for her Unabomber investigation work) contributed a motivational reading supporting the two-person framing.
Other candidates examined:
Before settling on the Finney + Sassaman pair, the film also considered Adam Back, Nick Szabo, David Chaum, Paul Le Roux, and Wei Dai. A 90-minute 2021 interview with Sam Bankman-Fried was reportedly cut from the final edit.
Critical counterpoints:
- Jameson Lopp (CTO of Casa) flagged a timing discrepancy that overlaps with the race-day alibi already documented on the Finney hypothesis page: on April 18, 2009 Satoshi sent developer email and broadcast a transaction while Hal was running a 10-mile race in Santa Barbara — a direct temporal conflict between the documentary’s claim and Hal’s recorded activity.
- Adam Back — himself the subject of the 2026 NYT Carreyrou investigation — publicly objected on three grounds: Sassaman’s KU Leuven affiliation (2004–2011) does not align with the documentary’s PST-window evidence; Hal Finney’s Santa Barbara race-day participation overlaps with documented Satoshi activity; and neither family ever came into possession of any portion of the documented Patoshi-pattern early Bitcoin reserves.
Position in the broader Satoshi-identification record:
Finding Satoshi belongs to the post-2024 wave of major-press and documentary identifications: the 2024 HBO documentary on Peter Todd, the 2026 New York Times Carreyrou investigation on Adam Back, and the Murphy v DHS FOIA action. Finding Satoshi differs in two ways: it is the first major documentary to propose a multi-person rather than single-candidate reading, and it relies heavily on family testimony rather than stylometric inference or a government-record subpoena.
The individual constituent hypotheses are developed independently at Hal Finney = Satoshi and Len Sassaman = Satoshi. The two-person joint reading — which carries the additional burden of explaining a Finney–Sassaman collaboration that left no surviving written trace — is the documentary’s specific contribution.