There is a new documentary recently, proposing a rather bold hypothesis—Bitcoin is probably not man-made, but created through the collaboration of Hal Finney and Len Sassaman.

In other words, the creator of Bitcoin was never just one person.
Two cyberpunks, two completely different skill sets, sharing one identity.
Their backgrounds overlap so much that it’s hard not to notice:
Both are immersed in the core circle of the cyberpunk movement, both have dealt with PGP encryption, and both know PGP’s founder, Phil Zimmermann. More importantly, they share the same underlying philosophy.
On Hal Finney’s side:
A serious software engineer, a C++ expert, who had already developed RPOW, an early proof-of-work system, before Bitcoin. And he was the first person in the world to receive a Bitcoin transfer.
On Len Sassaman’s side:
A proper cryptographer, an expert in anonymous systems, who managed the cyberpunk mailing list for years. Particularly skilled in writing and protocol design, with strong writing skills.
Looking at the timeline, it becomes even more interesting.
October 2008, the Bitcoin white paper is published.
January 2009, the first Bitcoin transaction, where Satoshi Nakamoto transfers to Hal Finney. Whether this was a public interaction or prearranged is unclear.
Looking further, a detail stands out: April 18, 2009, Hal Finney participated in a 10-mile race, with photos as proof, on the timeline.
And at the same time, Satoshi was sending emails, discussing technical details, never stopping work.
One person couldn’t do both at the same time. But if it’s two people’s timelines, it makes sense.
From 2009 to 2011, Satoshi remained active, and Finney and Sassaman were still alive.
In April 2011, Satoshi completely disappeared.
In July of the same year, Len Sassaman passed away.
By 2014, Hal Finney also died.
Satoshi Nakamoto has never appeared again.
The current hypothesis is this: Finney was responsible for coding, Sassaman for writing, and together they maintained the same identity.
Maybe Satoshi really was just one person, or maybe two. But if a team was behind the scenes, this might be the closest answer to the truth so far.