Display CC0 tag in cloud assets?

Is there any way to display assets that are available for commercial use? Like CC0 and whatever else licenses
Currently I have no idea which assets are fine to use and which might lead me to the court like *cough* ma *cough* rio 

Amazing idea! Would really help, cause now there's just too much stuff ripped from other games.

There will be still portion of people putting a wrong license, but I think if license is set by default to be non commercial it should be a good entry filter already