Here’s a tip for pizza marketers to make the most of the booming digital currency trend sparked by Bitcoin.

But before you go looking for a Bitcoin payment option from Pizza Hut, it’s important to know what this day – and, yes, Bitcoin Pizza Day isn’t without basis – is all about.

“Four years ago this week, on May 22, 2010, a BTC fan and programmer named Laszlo Hanyecz offered 10,000 Bitcoins – about $40 at that time – for two Papa John’s pizzas,” TechCrunch explains, citing the message written by Hanyecz at the time:

I’ll pay 10,000 bitcoins for a couple of pizzas… like maybe 2 large ones so I have some left over for the next day. I like having left over pizza to nibble on later. You can make the pizza yourself and bring it to my house or order it for me from a delivery place, but what I’m aiming for is getting food delivered in exchange for bitcoins where I don’t have to order or prepare it myself, kind of like ordering a ‘breakfast platter’ at a hotel or something, they just bring you something to eat and you’re happy! If you’re interested please let me know and we can work out a deal…

If you’re not familiar with the story, here’s what went on to happen.

As the legend has it, a volunteer in the UK subsequently ordered the pizzas and had them delivered to Hanyecz. According to TechCrunch, this kickstarted the trade of Bitcoin for pizza.

Today, Bitcoin is a surging digital currency that, some experts predict, will one day dominate all forms of eCommerce.

And it all started with pizza.