Addile

And that's where I don't fully agree. There are many projects licenced under "GPL v2 or later" and they don't need copyright assignment. Copyright assignment is huge and opens the door for way too many legal stuff.

Also Copyright is a pretty US thing. Law differs and many Countries don't actually allow it. Also since you brought up Getmany already: https://en.wikipedia.org/wiki/Copyright_law_of_Germany#Trans... Germany is such a country and even if you were to assign copyright to them it would be legally void to the best of my knowledge. And also other countries that base it on moral rights.

Copyright law is very different between countries and way too strong to just transfer for such a use. If they really wanted to, they should have made a license to handle it exactly the way they wanted.