Something that had an actual rating system, where you had to say post some code on GitHub that would then be evaluated, and you had to put some token in that co

Something that had an actual rating system, where you had to say post some code on GitHub that would then be evaluated, and you had to put some token in that code to prove it was yours, that sort of thing. Or maybe a coding test, but something freeform, that could be checked for plagarisation?