Tomorrow, May 22, 2023, will be the 13th anniversary of Bitcoin Pizza Day. This day went down in the history of cryptocurrency because it was the first time to buy a physical product for bitcoins (BTC). Programmer Laszlo Heinitz bought 2 pizzas for 10,000 digital coins.
Today, this amount seems huge and is around $270.66 million, but at that time, this Bitcoin amount was only $25. In fact, a famous developer posted an offer to buy 2 pizzas for 10,000 bitcoins on May 18, 2010.
However, at that time, not a single BitcoinTalk forum user accepted his proposal. He will update his post 3 days later on May 21.

The next day, one Jeremy Stardivent ordered 2 mushroom pizzas for the party of the famous Papa John’s restaurant. After that, Heinitz was very angry that he made cryptocurrency history in this way because he had other significant achievements in this space.
The developer heard about BTC in 2009 and a year later released a GPU miner, which became a bold experiment in digital gold mining. Of course, that time was a success.
The fact is that at first mining was done only with zero central processing units (CPUs). Employees do not think of other ways that are more effective.
Heinitz studied graphics cards and came to the conclusion that they could allow him to play bitcoins better than CPUs. The programmer’s theory turned out to be true and he managed to increase the hashing power about ten times.
But, the anonymous Bitcoin developer under the pseudonym Satoshi Nakamoto was not interested in the discovery and said that the technology was “high” for BTC.
However, the open-source code that Heinitz posted on the Bitcointalk forum eventually became popular. Many developers have used it to create their own miners based on Windows, Mac, and Linux operating systems.