AetherealDream - MusicBrainz has two albums that are released on bandcamp and youtube with an empty title:
https://aetherealdream.bandcamp.com/album/-
https://www.youtube.com/watch?v=AnfPFpDlFBo
https://aetherealdream.bandcamp.com/album/--2
https://www.youtube.com/watch?v=kpYceWonZl4
However on soundcloud they are titled “Blank Project” and “Blank Project II” respectively, and their youtube playlists are that way too:
https://soundcloud.com/aetherealdream/sets/blank-project
https://www.youtube.com/playlist?list=OLAK5uy_nCM2nNviUIjytGsI0IQPEDUMBzlcQDUDM
https://soundcloud.com/aetherealdream/sets/blank-project-ii
https://www.youtube.com/playlist?list=OLAK5uy_nNfJRj-kPrzh-KicB9I47JhsHfVoGU8Yo
I’d argue that the MB entry titled “-” is completely wrong, but I’m not sure whether it should be changed to [untitled] or to “Blank Project”. On one hand “Blank Project” to me could mean that the artist explicitly wanted the albums to have no title at all (supported by the first set of links), but on the other hand “Blank Project” is a title from the artist directly so it could be seen to qualify for the “known title” that should be used instead of [unknown] or [untitled].