I feel like this sort of thing already exists? or is it not that simple to do
I'm encoding messages into bitcoin addresses but that dude seems to have done it the way only miners can do it. When a miner finds a block, it can always put some message with it similarly to how Satoshi did it.
I know that miners can put messages when they find a new block. But is it different from your method to encode messages? I thought there is only one way to put text into bitcoin blocks.