I'm sorry but you don't want to use permanent IP bans. Most residential circuits are DHCP meaning banning via IP only has a short term positive effect.
That said automatic scanning of known hashes, and automatically reporting to relevant authorities with relevant details should be doable (provided there is a database somewhere - I honestly have never looked).
I don't know what part your unaware of - so let me do the ELI5. They (HashiCorp) created a tool called teraform which is used for defining what servers/other infrastructure you use in places like AWS. Up until recently this was open source under the Mozilla license to something that's not quite open, but not fully closed source (yet).
Before the flood of people beehaw was one of the main instances. Now just an interesting group of people (and nowhere near the size of world).
Yep c flat or b sharp. If the octave has a half step between notes (a full step is A to B, B to C, etc), then a sharp/flat is created. The octave dictates if we call it a sharp or flat, but from a mathematical perspective they are the same tone.