Everyone who worked on those tracks owns part of the copyright for them, and you'll need to have everyone's approval before you can upload them to Ryddm.

If you have written the lyrics, you own the copyright to them. However, if you did not create the beat or instrumental backing track, then somebody else owns the copyright in that (and vice versa). You would need their explicit permission before uploading the track to your profile and the other party can request that its publication shall be blocked if you do not have their permission.

Commonly, licenses to "leased" and "Purchased" beats/instrumentals may have the option for distribution and allowing online streaming and public performances. Make sure to read these license agreements carefully before uploading, and it may be best to review these before you purchase or lease a beat as an artist.