Bitcoin Pizza Day commemorates the moment a Florida man named Laszlo Hanyecz bought two Papa John’s pizzas for 10,000 BTC. At the time, it was a fun experiment in assigning real-world value to Bitcoin. Today, that transaction is often regarded as the world’s most expensive pizza order, given BTC’s subsequent price surge.

The anecdote has become Bitcoin folklore, reminding everyone how drastically perceptions of “internet money” have changed. May 22 is now celebrated in the community with pizza-themed meetups and promotions, highlighting Bitcoin’s journey from niche curiosity to mainstream financial asset.