According to Sumit Gupta (@smtgpt) on Twitter, Bitcoin Pizza Day 2025 marks the anniversary of the first real-world Bitcoin transaction, where 10,000 BTC were exchanged for two pizzas. This event is widely recognized as a turning point that moved cryptocurrency into mainstream adoption (source: @smtgpt, May 21, 2025). Historically, Bitcoin Pizza Day has been associated with increased trading activity and heightened market sentiment as exchanges like CoinDCX launch special campaigns and promotions. Traders should monitor for short-term volatility and potential spikes in Bitcoin trading volume as community engagement and marketing initiatives often lead to increased participation and price movement. This annual event frequently acts as a catalyst for renewed retail interest and can influence broader crypto market trends.