The footer on every page (except chat) says:
site design / logo © 2021 Stack Exchange Inc; user contributions licensed under cc by-sa. rev 2021.5.28.39383
Does this mean only the site design and logo are copyright Stack Exchange Inc?
Or is it asserting copyright over the adaptation of the original contribution(s) as presented on the page?
The Public Network Terms of Service says:
The Network is protected by copyright as a collective work and/or compilation, pursuant to U.S. copyright laws, international covenants, and other copyright laws.
which appears to answer that in the affirmative.
Is there anywhere that explicitly states users retain copyright of their licenced contributions?
Or is that assumed to be general knowledge of how Creative Commons licencing works?