And you plan to make this using only 100 raspberry pi?
break the bitcoin huh? Are you looking to brute force SHA256? You'll probably need more all the materials there are on earth to create computers and as much time as the known universe can provide you with.
https://www.youtube.com/watch?v=S9JGmA5_unY Pretty informative! This OP is totally shit. You need probably trillions of asics S9 miners. That would be crazy damn big computer to break bitcoins!
I'm branding this guy as a scammer, I hope everyone does too.