May 22, 2010, when a programmer named Laszlo Hanyecz paid 10,000 bitcoins for two pizzas. As of May 22, 2023, the value of one bitcoin is currently fluctuating, but it's around $36,000 to $40,000 USD.

So, if we assume that the 10,000 bitcoins used to purchase the pizzas in May 2010 were held until today (May 22, 2023), their value would be between $360 million and $400 million USD.