LRCLIB is the database plus tools. LRCGET is a frontend to search lyrics for music in your computer and you can edit or add if a lyric is missing.
It’s not federated, but they provide database dumps so a step forward for this application. Some music players/servers already have connection with lrclib.
Maybe it’s not what are you looking for but LRCLIB and LRCGET are open source:
LRCLIB is the database plus tools. LRCGET is a frontend to search lyrics for music in your computer and you can edit or add if a lyric is missing.
It’s not federated, but they provide database dumps so a step forward for this application. Some music players/servers already have connection with lrclib.