Programmer used 10,000 bitcoins to exchange for two pizzas, creating the first physical transaction in cryptocurrency history. This seemingly absurd transaction ignited the spark of decentralized finance. Today, the value of bitcoin has skyrocketed a million times. I went long on bitcoin at 10,280, but at such a high position, I still couldn't help but feel fear of heights. The technical indicators told me it would rise further, but I still closed my position at 10,314. Sigh, I perfectly missed the subsequent rally!