On May 22, 2010, Laszlo Hanyecz, a programmer, bought a pizza using 10,000 Bitcoins. At the time, Bitcoin was a fledgling currency with a very low value, and pizza was considered the first real purchase made using it.
It is one of the most famous stories in the history of cryptocurrencies.
Today, those 10,000 Bitcoins are worth hundreds of millions of dollars, making them a symbolic example of how cryptocurrencies can grow in value unpredictably. This day is celebrated annually as Bitcoin Pizza Day.