When a cypher begins you have 30 days to submit a rap. It doesn't matter when you submit, as long as you submit before the deadline.
You can get paid with PayPal or receive an Amazon.com gift card with the same monetary value.
After submission period ends, judges review all entries and pick the finalists. RapPad members with 35+ reputation are eligible to cast only one vote on a finalist of their choice. The submission with the most votes will win.
You may add MINOR sound effects to the beat, but you may not change the tempo. However you can add drops and/or shorten the beat if you don't plan on using the entire track.
At least 2 minutes, and at most the length of the beat. These are guidelines, not strict rules.