cryptography – What happens when everybody decides to convert their BTC to Cash

In order for you to sell your BTC for fiat cash, another trader needs to be on the other end of that deal and be willing to buy your BTC in exchange for their fiat cash.

So as long as someone is willing to buy your Bitcoin for cash, it’ll have a dollar value. Now, if everyone only wanted to sell Bitcoin, and nobody wanted to buy it, it would be worth $0.