Two weeks ago, the New York Times named Adam Back as Bitcoin's creator. Yesterday, a new documentary said it was two completely different people. The greatest financial mystery of the 21st century just got more complicated — and more interesting.
Finding Satoshi, a four-year investigative documentary directed by Tucker Tooley and Matthew Miele, released globally on April 22, 2026. Its conclusion: Satoshi Nakamoto was never one person. Bitcoin was created by two late cypherpunks — Hal Finney and Len Sassaman — working together under a shared pseudonym.
Here's what the documentary found, why it contradicts the NYT investigation, and why none of this changes what Bitcoin is.
The Investigation
The film follows investigative journalist and New York Times bestselling author William D. Cohan and private investigator Tyler Maroney of Quest Research & Investigations through a four-year forensic deep dive into Bitcoin's origins. Their starting point: a shortlist of six credible suspects — Adam Back, Nick Szabo, Hal Finney, Len Sassaman, Paul Le Roux, and Wei Dai.
The team brought in experts across cryptography, programming, linguistics, and behavioral analysis — including a former FBI profiler known for work on the Unabomber case — to test each candidate against what is known about Satoshi's technical skills, writing style, activity patterns, and philosophy.
One by one, candidates were eliminated. The investigation converged on two names.
Who Were Hal Finney and Len Sassaman?
Hal Finney was a Caltech graduate, cryptographer, and one of the most respected figures in the cypherpunk community. He was the first person to receive Bitcoin — Satoshi sent him 10 BTC on January 12, 2009, one day after Finney famously tweeted "Running bitcoin." He invented RPOW (Reusable Proof of Work), a direct precursor to Bitcoin's mining system. He died of ALS in 2014, having always denied being Satoshi.
Len Sassaman was a systems engineer, cypherpunk, and cryptographer who studied under David Chaum — the pioneer of digital cash — and worked on PGP encryption alongside Finney at PGP Corporation. He was deeply embedded in the same intellectual circles that produced Bitcoin. He took his own life in July 2011, several months after Satoshi's final public post. His widow, Meredith Patterson, says Sassaman was fascinated by pseudonyms and actively interested in evading stylometric analysis.
Both men were cypherpunks. Both worked at PGP. Both had the technical skills and philosophical motivation to build Bitcoin. And critically — both are no longer alive, which may explain why Satoshi's 1.1 million BTC have never moved.
The Key Evidence
Activity timing. Data scientist Alyssa Blackburn analyzed Satoshi's early mining records and communication patterns. Her research found that Satoshi was predominantly active between 6 a.m. and 10 p.m. Pacific Time — a window that pointed to the Americas. Of all the candidates, only Finney and Sassaman matched Satoshi's digital rhythm. She argued it was "inconceivable" that Back, Szabo, or Dai could be Satoshi based on this analysis alone.
The two-month gap. Will Price, who worked with Finney at PGP Corporation for 15 years, noted that Finney made no commits to his PGP work in the two months before Bitcoin's genesis block in January 2009 — the exact window when someone was finalizing Bitcoin's code. During that same period, Finney was coding in C++, the language Bitcoin was written in.
The division of labor. The documentary's most compelling theory: Finney wrote the code, Sassaman wrote the words. This split would explain why Satoshi's programming and prose have always felt like they came from slightly different minds — and why Sassaman could publicly criticize Bitcoin while still being linked to it. A person protecting a hidden identity would have reason to make their public and private voices diverge.
The widows. Fran Finney, Hal's widow, concedes in the film that her husband probably played a role in Bitcoin's creation. Meredith Patterson, Sassaman's widow, calls the co-creator theory plausible. Bram Cohen, who knew both men, said the implication that it was "Hal or Len or some combination of the two" was believable.
Coinbase CEO Brian Armstrong, whose company supported the film, said it was "the most thoughtful take on this subject I've seen out there" and added that he suspected the filmmakers got to the right answer. Security researcher Jameson Lopp — who had previously written an article arguing that Hal Finney was not Satoshi — called the documentary "easily the most expertly produced Bitcoin documentary" he had seen.
How This Contradicts the NYT Investigation
Two weeks before Finding Satoshi's release, Pulitzer Prize-winning journalist John Carreyrou published a 12,000-word investigation in the New York Times naming Adam Back — the British cryptographer who invented Hashcash and currently serves as CEO of Blockstream — as the most likely Satoshi. Carreyrou said he was "somewhere between 99.5 and 100 percent certain."
Finding Satoshi directly challenges that conclusion. The documentary's investigators reviewed the same email that Carreyrou used to support the Back theory and found it inconsistent with Satoshi's known writing style and lacking cryptographic verification. Blackburn's activity analysis further weakened Back's candidacy, placing him in a time zone and activity pattern that didn't match Satoshi's known rhythm.
Back himself has denied the NYT's claims. The documentary doesn't attack Carreyrou or the Times — it simply reaches a different conclusion from a different investigation.
So where does that leave us? With two serious, evidence-based investigations that directly contradict each other. The mystery isn't solved. It's just more interesting than it was a month ago.
Why It Doesn't Matter — and Why It Does
The Bitcoin community has long maintained that Satoshi's identity is irrelevant. The protocol runs without him. The 21 million cap doesn't change. Decentralization doesn't require a known founder.
That's true. But there's a reason the question keeps coming back. Satoshi's wallets hold an estimated 1.1 million BTC — worth roughly $80 billion at current prices — that have never moved. If those coins ever moved, the market impact would be significant. And whoever controls them holds an extraordinary amount of latent power over the network they helped create.
The fact that neither Finney nor Sassaman is alive — and that the filmmakers found no evidence their families have access to Satoshi's private keys — may be the most meaningful part of the documentary's conclusion. If they're right, those coins are effectively gone forever. And that's probably good for Bitcoin.
Few Understand. Wear the Evidence.
Whether it was Adam Back, Hal Finney and Len Sassaman, or someone else entirely — one thing is certain. Whoever built Bitcoin changed the world and then disappeared. That's the most cypherpunk move in history.
If you're the kind of Bitcoiner who goes deep on this stuff, you'll appreciate the Satoshi Nakamoto collection at FOMO21 — hats, tees, and hoodies paying tribute to the most important anonymous figure in financial history. From the Satoshi Nakamoto Bitcoin Dad Hat to the If You Don't Believe Me Satoshi Quote T-Shirt, every piece is a nod to the mystery that started it all.
And if you want the full story on the NYT's Adam Back theory, read our earlier post: Who Is Satoshi Nakamoto in 2026? Why the Adam Back Theory Is Back.
