Remove the credit artists requirement
This 'Requirement is nothing short of bad.
1. The Text Credit means very little to nothing.
2. It requires even more work, on those uploading and for no good reason
3. Its just as easy to lie any use a fake name
--unless you're going to have people start using some source checking, and then it gets even worse.
4. The mobile app doesn't even support that on uploads, he'll it nearly let's you know it worked.
5. This does nothing for anyone, and doesn't even qualify for safe harbor standards.