#BinancePizza Bitcoin Pizza Day is celebrated every year on May 22 to mark the first real-world transaction using Bitcoin. On May 22, 2010, a programmer named Laszlo Hanyecz paid 10,000 bitcoins for two large pizzas from Papa John's, which was worth about $41 at the time. This transaction is significant because it was the first commercial use of Bitcoin, demonstrating its potential as a medium of exchange.