In 2012, the world's first ASIC Bitcoin mining machine was born (roasted cat was the second person in the world to successfully develop ASIC mining machine). How did Fossil Hand mine 200000 BTC in 2011? ——GPU mining ⛏️ Laszlo Hanyecz, who purchased two pizzas with 10000 BTC, was the first user of GPU mining and completed the first physical Bitcoin transaction in history; GPU mining has significantly improved efficiency compared to CPU, indirectly giving rise to the subsequent era of mining machines Let's take this opportunity to review the several stages of BTC mining experience. Once the position is depleted, we can only learn along the way one ️⃣ CPU Mining Era: 2009-2010 two ️⃣ GPU Mining Era: 2010-2011 three ️⃣ FPGA mining era: 2011-2012 four ️⃣ ASIC mining machine era: 2012 present five ️⃣ Mining Pool and Cluster Mining Era: 2013 to Present