[Mindwipe]

There's no key system like that that could possibly work.

But you already are required to deposit your books (or other copyrighted works) with the British Library upon publication and many other countries do the same thing.

https://bookisbn.org.uk/legal-deposit/

The US should probably do the same thing, but the amount of American works that aren't covered by the British Library are probably minimal.

[space_fountain]

The us does have the same thing https://www.copyright.gov/mandatory/