Basically we use the same license as other custom rom providers. But we have our own reasons for restricting access to certain (not all) repositories. So for now it is not available to release the Unofficial version of NusantaraROM.
You can use NusantaraProject assets for design purposes such as wallpaper, bootanimation, etc. There is no need to include any attributes to use it (personal or commercial, but we would appreciate it). We do not allow assets to be used for things that are detrimental to NusantaraProject.