Lately, I've been drawn back into this 15-year-old mystery—who is Satoshi Nakamoto?

Honestly, no one knows. But that hasn't stopped him from changing the world with a PDF.

On October 31, 2008, a person named Satoshi Nakamoto posted a paper on a cryptography mailing list—just 9 pages, yet it redefined money itself. Two months later, the Bitcoin network went live, and Block 0 was mined. Interestingly, Satoshi left a line of hidden information in the paper—the headline from The Times of London, January 3, 2009: "Finance Minister faces second bank bailout." This isn't a technical detail; it's a warning.

Over the next two years, Satoshi did almost all the pioneering work. Wrote the first client, ran the first full node, mined coins for others, sent the first BTC to developer Hal Finney, and actively discussed on forums. Then what? In 2010, he handed the project over to others. By April 2011, his last words were "I've moved on to other things," and he disappeared.

This is where things get truly shocking. It's estimated that Satoshi mined about 1 million BTC. At today's price (~$81K), that's roughly $81 billion. It's been 15 years, and not a single coin has moved. No transfers, no spending—frozen in time.

So, is he an individual or a team? Supporters of "it's one person" point to a consistent writing style, uniform development accounts, and detailed, in-depth emails. But others say his activity spans multiple time zones, his code is written at a lightning-fast pace, and his English is flawless—things that seem unlikely for just one person.

The list of suspects is even more intriguing. Hal Finney was the first recipient of Bitcoin, a renowned cryptographer, living near someone named Dorian Nakamoto, who died of ALS in 2014. Some insist he is Satoshi, while others believe he was just an early helper. Nick Szabo created "Bit Gold" in 2005, a precursor to Bitcoin; his legal, economic, and technical background matches perfectly, and his writing style is highly similar to Satoshi's. But strangely, he never posted on early Bitcoin forums. Adam Back, inventor of Hashcash (cited in the Bitcoin white paper), a veteran Cypherpunk, with British spelling matching Satoshi's, is also a suspect. Some even point fingers at Elon Musk, claiming a former SpaceX intern identified him in 2017, but Musk quickly denied it.

There are even more outrageous theories. Craig Wright has claimed to be Satoshi himself, gone to court over it, but has never signed with Satoshi's private key—something that could prove his identity instantly. The developer community largely dismisses him. Some even suggest the NSA is behind it, since the core encryption algorithm, SHA-256, was designed by the NSA, and Bitcoin's launch coincided with the 2008 financial crisis, disappearing cleanly afterward. But that’s just conspiracy theories—no solid evidence.

What I find truly worth pondering is the legacy Satoshi left behind. He gave the world a set of code and then vanished completely. No pursuit of fame, no cashing out, no desire for power. Perhaps this is the key—Bitcoin's existence doesn't depend on any founder. Its foundation is mathematics, code, and community. That’s why it cannot be destroyed. Satoshi may forever remain a mystery, but Bitcoin itself has long transcended him.