Have you all eaten pizza today?
On May 22, 2010, an American computer programmer named Laszlo Hanyecz exchanged "10,000 bitcoins" for 2 large pizzas, becoming the first real-world transaction using bitcoin in history.
15 years ago, the 10,000 bitcoins were worth only $41 (about NT$1,236), but now they are worth NT$32.2 billion, making them the most expensive pizzas in history.