Strictly speaking, there's nothing stopping anyone from making a website listing authors of books and how to pay them. And strictly speaking, there's nothing stopping pirate sites from taking said website and embedding the relevant author donation info next to a torrent/DL of the book they wrote.
Publishers wouldn't be able to take down the list website, as it's perfectly legal to send authors money. Publishers wouldn't be able to take down the pirate sites either, because they've already been trying for decades and can't win the whack-a-mole.
Publishers wouldn't be able to take down the list website, as it's perfectly legal to send authors money. Publishers wouldn't be able to take down the pirate sites either, because they've already been trying for decades and can't win the whack-a-mole.