I suddenly found about 2 weeks ago that I can add license relationships (Song “Nälkän Chant” - MusicBrainz) and started to use this option. Before now all songs/recordings I wanted to add license to them were published under CC family licenses. But today I wanted to add this rel to some public domain work and understood, that I don’t know how I can do that, because there is no some one official link for public domain.
I can use Public domain - Wikipedia for this goal with changing rel type from ‘Wikipedia’ to ‘license’, but it is a language specific link and I need to do re-choose its type all the time manually. Also I can use one of these links on CC’s website:
- Public Domain - Creative Commons - general description
- CC0 - Creative Commons - not exactly public domain, but at least it is closest license link
- Public Domain Mark - Creative Commons - “Use this tool if you have identified a work that is free of known copyright restrictions. Creative Commons does not recommend this tool for works that are restricted by copyright laws in one or more jurisdictions.”
So what should be preferred?