[lauretas]

What about http://linkedbrainz.org ? Is it a dead project?

[Freso]

LinkedBrainz is not something that the MetaBrainz team is directly involved with, however, according to themselves, «[they are] back, if basic for now.»

(Note that there's also a "GraphBrainz" project (also not something MetaBrainz is involved with), posted about earlier here: https://news.ycombinator.com/item?id=14479031 )

[lauretas]

Looks like GraphBrainz stands for "MusicBrainz + GraphQL". Unfortunately, this has nothing to do with RDF.