I just stumbled upon something fascinating: The pseudonymous Bitcoin creator Satoshi Nakamoto could be one of the richest people in the world—and has never lifted a finger for it.

The story is crazy. Satoshi’s estimated wealth is based on about 1.1 million Bitcoins mined in the earliest days of the network. With the current BTC price of nearly $81,000, Satoshi Nakamoto’s fortune is now around $89 billion. That’s still phenomenal—only ranking in the top 15 of the world’s wealthiest people.

What fascinates me most: Not a single Bitcoin has ever been moved. Since 2010. The wallet just sits there, untouched. Is Satoshi dead? Forgotten? Or simply consistent? No one knows.

For comparison: Most billionaires build companies, seek VC funding, go public. Satoshi did none of that. Wrote a white paper, launched a network on a few laptops—and disappeared in 2011. End of story.

The crazy part is what it has become. Bitcoin is now worth $2.4 trillion. An entire ecosystem that grew out of this one idea. And Satoshi Nakamoto’s wealth just grows along with it, without the person ever saying or doing anything again.

This week, Bitcoin hit a new all-time high, driven by ETF inflows and institutional demand. Every time the price rises, so does Satoshi’s theoretical wealth. Theoretically, because of course no one knows if these coins will ever change hands.

It’s one of the greatest mysteries in financial history: an invisible billionaire whose wealth exists only on paper. And yet—perhaps because of that—this quiet beginning has transformed what money can mean.