You know the story of Bitcoin Pizza, right? Two large Papa John's pizzas for 10,000 BTC 15 years ago. Everyone talks about it, everyone calculates what that’s worth today — over a billion dollars. But here’s what most people forget: the guy behind that transaction, Laszlo Hanyecz, is much more than just a guy who made a bad deal.

In reality, Hanyecz spent nearly 100,000 BTC in bitcoins the following year. Yes, you read that right. Looking at his first address on Bitcointalk, the guy received and spent about 81,432 BTC between April and November 2010. At today’s price, that’s several billion dollars. But back then, Bitcoin was worth almost nothing, so for him, it was just... free money to spend.

But what’s really crazy is what Laszlo Hanyecz contributed to Bitcoin long before he became famous for his pizzas. On April 19, 2010, just a few days after signing up on Bitcointalk, Hanyecz created the first MacOS client for Bitcoin Core. Satoshi had coded it for Windows and Linux, but Hanyecz made it possible for Mac users to run the software. This is the foundation of all the Mac-compatible Bitcoin wallets we use today.

But wait, that’s not even the craziest part. Hanyecz discovered he could mine Bitcoin with his computer’s (GPU) graphics card. Before that, everyone was using the (CPU) processor. Since the GPU is much more powerful for this task, his discovery completely sped up mining. On May 10, 2010, he posted on Bitcointalk: “I’ve updated the Mac OS X binary... It will use your GPU to generate bitcoin. It works really well if you have a good GPU like an NVIDIA 8800.”

This innovation sparked the first digital gold rush. The total hash rate exploded by 130,000% by the end of the year. For the first time, miners started building small mining farms in basements, attics, garages. These setups became the prototypes for the mega farms we see today.

The impact was so huge that Satoshi himself acknowledged Hanyecz’s contribution. But listen, Satoshi had concerns: he worried that GPU mining would monopolize coins created too quickly, and that people with only CPUs would get discouraged. Hanyecz sensed this and stopped promoting GPU mining afterward.

In a 2019 interview, Hanyecz explained: “I thought, ‘My God, I feel like I’ve screwed up his project. Sorry, buddy.’ He was worried some people would get discouraged because they couldn’t mine with a CPU.”

Maybe that’s why Laszlo Hanyecz made the offer of 10,000 BTC for pizzas shortly after. A kind of penance? Or maybe he just wanted to show that Bitcoin could be used for real transactions.

What’s cool is how Hanyecz sees it in retrospect. He says it was a trade where both parties thought they got a good deal. He felt like he was “beating the internet” by getting free food. He coded the thing, mined some bitcoin, and felt like a winner that day.

“A hobby usually takes time and money,” he said. “But in my case, my hobby helped me get dinner. I got pizzas for contributing to an open-source project.”

There you go. Behind the Bitcoin Pizza joke, there’s a true pioneer who changed Bitcoin’s technical trajectory. Hanyecz didn’t just buy pizzas — he laid the foundations that millions of people still use today.