Being a mysterious billionaire sounds glamorous until you realize you're watching $47 billion evaporate and can't even complain about it on Twitter without blowing your cover.

Satoshi Nakamoto, the anonymous genius who invented Bitcoin (BTC) and then vanished into the digital ether, has seen their estimated net worth crater by 34%. That puts their fortune at roughly $90.7 billion today, down from a comfortable $137 billion back in October.

The culprit? Bitcoin's ongoing market beating. The cryptocurrency touched a seven-month low near $80,000 on Friday before recovering slightly to trade around $83,921—a modest 2% bounce from the previous day's depths.

This wealth destruction has real consequences for Nakamoto's theoretical status among the ultra-rich. The $47 billion haircut dropped them to 20th place on the Forbes billionaire list, sitting just behind Bill Gates and his $104 billion fortune. Not long ago, Nakamoto's dormant treasure trove of 1.096 million BTC—untouched since 2010—had launched them into the top five wealthiest people on Earth.

The broader crypto market isn't faring much better. Bitcoin has erased all of its 2025 gains, down 12% year-to-date, while Ethereum has tumbled nearly 19%. What looked like a promising year has turned decidedly ugly.

Nakamoto's paper losses highlight something fundamental about cryptocurrency: volatility cuts both ways. The same wild price swings that can mint fortunes overnight can obliterate them just as quickly. For someone who literally created the asset class and then disappeared, it's a peculiar form of passive wealth management—no rebalancing, no tax-loss harvesting, just watching the number go up and down while maintaining radio silence for 15 years.

Whether cryptocurrencies will bounce back or continue sliding remains the subject of intense debate among investors and analysts. For now, though, Nakamoto's declining net worth serves as an expensive reminder that even Bitcoin's creator isn't immune to market crashes.