Adam Back, known as an early bitcoin (BTC) developer, directly rebutted a documentary’s central claims about Satoshi Nakamoto’s bitcoin holdings and identity.

On April 26 local time, blockchain outlet BeInCrypto reported that Back said on X, formerly Twitter, that there were serious flaws in the so-called “Patoshi pattern” used to interpret early bitcoin mining data and estimate Satoshi’s holdings.

The dispute centres on the claim that Satoshi mined about 20 to 40 percent of all blocks in bitcoin’s first year, holding 500,000 to 1 million BTC, and has never sold any of it. Based on that premise, the documentary raised the possibility that Satoshi may already be dead.

Back said such estimates are hard to sustain from the starting point. He argued that even in bitcoin’s first year there were already many other miners, and that by hashrate it may have been 60 to 80 percent or more. As early network participation grows, it becomes harder to distinguish after the fact which blocks were mined by a specific address or person. He said statistical patterns alone have limits in precisely isolating Satoshi’s mined coins.

Back also said the premise that “Satoshi never sold” has not been proven. Even if the Patoshi pattern identifies some early mined coins, he said that does not prove the coins have remained untouched to this day.

He added that if Satoshi sold some, they might have sold more recent and more ambiguous coins first. As time passes, the pattern blends into background noise and becomes less identifiable, he said. If later mined coins were disposed of, he said it would be hard to confirm based on current analysis.

Back also questioned the documentary’s process of identifying suspects. Referring to prior analysis by Jameson Lopp, he said there is already time-slot material showing Hal Finney was running a marathon when bitcoin test transactions were being exchanged. He said that conflicts directly with the theory that Finney was Satoshi, yet the producers later shifted their focus to Len Sassaman without explaining why the initial basis was wrong.

Back described the documentary’s approach as “Gell-Mann amnesia.” He criticised it as adding other candidates without sufficiently reflecting evidence that conflicts with an earlier hypothesis. He also said it was inconsistent that the producers excluded residents in European time zones based on forum post analysis, yet later again cited Sassaman as a candidate despite time-zone issues.

Back also raised technical objections. Mentioning concerns raised by the spouse of Cam and Len Sassaman, he said Sassaman did not know C++ and never owned a Windows device. Since early bitcoin code was written in C++, he said this directly weakens the Sassaman theory. He also cited that Sassaman showed a critical stance toward bitcoin during their lifetime.

The dispute shows that existing speculation about Satoshi’s identity still lacks conclusive evidence. Analysis of early mining records and block timestamps alone makes it difficult to link in one step the scale of held coins, whether they were sold and the real person. As network participants increase and mining becomes more distributed, attributing specific actions to a specific individual becomes more unclear.

As the documentary’s existing hypothesis is shaken in this flow, other candidates such as Nick Szabo are being discussed again. Still, it remains difficult to confirm Satoshi’s identity based only on the technical analysis currently public. Critics continue to say it is not easy to reach a conclusion from early bitcoin mining data alone unless new evidence emerges or Satoshi personally appears.