As for how to do it - I don't see why it is hard for you to come up with something that proves ownership. Do your books have a publisher? Do you have a contract with the publisher? Or just a letter from someone at the firm confirming your work? Have you registered the work with the copyright office? Do you have proof of publishing on online portals?
You aren't helping yourself or anyone else by anthropomorphising Google. It is not your friend who can "break your heart", or a "trustworthy helper on the Web", or a "trusted ally", but a large bureaucratic corporation. Treat it like the machine it is and you will get the results you want.