Glad I discovered this workout series. I’ve been using and buying bitcoin for a while, but by page 2 of the Satoshi paper, I’m already learning things I hadn’t considered before. Like the definition of a coin is a bunch of digital signatures? I should have known that, but seeing it explicitly stated was an eye opener.
Got over my head once those equations appeared to prove security, but glad I went back to the original source. Looking forward to the rest of this series.