That's why it's called copyright. You can perfectly sign it away.
In Germany the right is called "Urheberrecht" which literally translates to "author's right". And while you can license your work and sign away the usage, you cannot by definition sign away the fact that you are the author of a work.
In Germany the right is called "Urheberrecht" which literally translates to "author's right". And while you can license your work and sign away the usage, you cannot by definition sign away the fact that you are the author of a work.