Date:

Bitcoin Pizza Day is celebrated annually on May 22, commemorating the first documented commercial transaction using Bitcoin on this date in 2010.

Key Participants:

- Laszlo Hanyecz: A Florida-based programmer and early Bitcoin miner who offered to pay 10,000 BTC for two pizzas.

- Jeremy Sturdivant (Jercos): A Bitcoin enthusiast who accepted the offer and arranged the pizza delivery.

Transaction Details:

- Offer: On May 18, 2010, Hanyecz posted on the Bitcointalk forum: "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."

- Execution: On May 22, Jercos ordered two Papa John's pizzas (large, with toppings) for Hanyecz, who completed the Bitcoin transfer.

- Bitcoin Value at the Time: 10,000 BTC was worth approximately $41, making each pizza ~$20.50.

Significance:

- First Real-World Transaction: Demonstrated Bitcoin's potential as a medium of exchange, moving beyond theoretical use.

- Cultural Milestone: Highlighted the evolution of cryptocurrency from a niche experiment to a viable financial tool.

- Volatility Lesson: The transaction became a famous example of Bitcoin's price volatility, as 10,000 BTC would later peak at over $600 million (based on 2021 all-time highs).

Current Perspective:

- Hanyecz's View: He has stated he doesn't regret the trade, as it helped Bitcoin gain practical traction.

- Jercos's Outcome: Used the BTC to fund travels and projects, later reflecting on the irony of its value surge.

Celebration:

The crypto community marks the day by:

- Purchasing pizza with Bitcoin (where accepted).

- Sharing memes and discussions about Bitcoin's history.

- Hosting events to reflect on cryptocurrency's growth and risks.

Technical Context:

- Mining in 2010: Block rewards were 50 BTC, so 10,000 BTC equated to 200 blocks (~33 hours of mining). Hanyecz mined extensively, accumulating coins early.

- Blockchain Record: The transaction is permanently recorded in Block 57043, a testament to Bitcoin's immutable ledger.

Legacy:

Bitcoin Pizza Day symbolizes both the grassroots origins of cryptocurrency and the unpredictability of its value. It remains a poignant reminder of how early adopters' actions shaped the digital currency landscape.