Today I want to tell an interesting story about Bitcoin, but not the famous pizza story that everyone talks about. Laszlo Hanyecz – you might only know this name from Pizza Day, but the truth is he made extremely important contributions to Bitcoin from the very beginning.

Many people on Twitter praise the moment Laszlo Hanyecz bought pizza with bitcoin, but few know that he spent nearly 10 times that amount of bitcoin on other transactions. And even more interesting – perhaps Hanyecz did this to compensate for his much greater technical contributions to Bitcoin at that time.

Look at what Laszlo Hanyecz actually did. On April 19, 2010, just a few days after registering on Bitcointalk (the forum created by Satoshi Nakamoto), he developed the first MacOS client for Bitcoin Core. At that time, Bitcoin only ran on Windows and Linux, but thanks to Hanyecz, Mac users could also participate. This laid the foundation for all later Bitcoin wallets supporting MacOS.

But the truly remarkable thing is Laszlo Hanyecz’s discovery of GPU mining. Previously, everyone used CPU hardware for mining, but Hanyecz realized that graphics cards (GPUs) were many times more powerful. He wrote on Bitcointalk on May 10, 2010: “Updated the Mac OS X binary file… It will use your GPU to generate bitcoin. This is really efficient if you have a good GPU like NVIDIA 8800.” This discovery sparked a frenzy – Bitcoin’s hashrate skyrocketed 130,000% by the end of the year, and miners began building small mining farms. These – in attics, garages, basements – are the prototypes of today’s industrial farms.

Perhaps out of concern about this, Satoshi Nakamoto wrote to Hanyecz: “A big appeal is that anyone with a computer can create some free coins. GPUs will limit the incentive to only those with high-end hardware.” In a 2019 interview, Laszlo Hanyecz admitted that he felt he had spoiled Satoshi’s project, so “he stopped promoting GPU mining afterward.”

Maybe that feeling motivated him to make the offer of 10,000 BTC for two Papa John’s pizzas in May 2010. But fewer people know that Laszlo Hanyecz spent nearly 100,000 BTC that year. According to blockchain data, from April to November 2010, he received and spent 81,432 BTC – now worth over $8.6 billion. He wrote in February 2014: “I’ve long spent all my bitcoin on pizza. Aside from some change, I’ve spent all the money I mined.”

No one can prove exactly where all that money went – maybe pizza, other goods, or Hanyecz simply gifted bitcoin to new Bitcointalk members, which was common practice at the time. But he declined to continue in August 2010, saying “I can’t generate thousands of satoshis every day anymore.”

By 2019, Laszlo Hanyecz viewed this lightly with a bit of humor. According to him, he performed a kind of “culinary alchemy” – turning electricity and computational power into cheap dinner. “An exchange happened because both sides thought they were getting a good deal,” he said. “I feel like I beat the internet, got free food. I encoded this, mined bitcoin, and felt like I won the internet that day. I got pizza for contributing to an open-source project. Usually, hobbies cost time and money, but in this case, my hobby helped me get dinner.”

So, from a pioneer in GPU mining to the first developer of a MacOS application for Bitcoin, Laszlo Hanyecz left a profound mark. Pizza Day is just the tip of the iceberg – his real technical contributions are what truly stand out.