Writer splits signed at the source, registered with the right societies, so the money reaches the right names.
Songwriting is a business built on invisible ownership. A co-write happens in an afternoon, a demo goes out that evening, and the shares live in whoever's memory is loudest.
The gap between writing a song and registering it is where publishing money leaks. When the collection society finally pays out, the split that was obvious in the room is a fight in an email chain.
Add every writer in the session and the working title before you leave the room.
Deed checks the split against publishing deals already on file and flags conflicts.
Everyone signs the split sheet, and Deed hands off to registration with the correct societies.
New uses of the song trigger a notice, so a sync or a cover is met with paper, not surprise.