Which part is generating the keypairs? Is it bitcoin specific? I'm curious how it's done. I'm thinking to code up something where people can have a small amo

Which part is generating the keypairs? Is it bitcoin specific? I'm curious how it's done. I'm thinking to code up something where people can have a small amount of bitcoins donated to every URL they visit. If it ever caught one if could be a way to fund content instead of ads.