I'm developing an App, through which illustrators/creators can distribute their own comic books for free and other readers can download the books for free as well. I don't want anyone to distribute comic books that don't belong to them or they don't have right to distribute them. Even if they do, the app doesn't hold any liability for that. How can I write a disclaimer for this. I'm a developer and don't have any knowledge in this law domain. My apologies if the question seems irrelevant. Any help will be highly appreciated.