Wow! This guy is mining for bitcoin with pen and paper!!!
He decided to see how practical it would be to mine Bitcoin with pencil and paper. It turned out that the SHA-256 algorithm used for mining is pretty simple and can in fact be done by hand. Not surprisingly, the process is extremely slow compared to hardware mining and is entirely impractical. But…
Fascinating, and interesting
for those of you who really want to dig in and understand the process.