Bitcoin Pizza Day is celebrated every year on May 22nd to mark the first real-world transaction using Bitcoin. On this day in 2010, programmer Laszlo Hanyecz paid 10,000 Bitcoins for two pizzas. At the time, the Bitcoins were worth only $41, but today, that amount would be worth millions. This event showed that Bitcoin could be used as real money and sparked interest in cryptocurrency. Now, people around the world celebrate by eating pizza and remembering how one simple transaction helped launch the future of digital currency.