But would they be able to appeal to a human rights court?
No. This is not a criminal offense but a code of conduct. When there's an issue, they appeal to CAS.
I mean, I don't know the legalities but a federation like Rusfed would surely be able to try it because it would be without any. proof. whatsoever of involvement.
For doping faults, the athletes have to prove their innocence, not the other way around. The proof is the test result. If they want to argue they didn't do it, they can try. I mentioned an automatic suspension of the entourage to simplify things but @el henry had another way to make it work with a lot more legal safety for a coach.
Just keep in mind that wada and cas are not judging crimes but sport misconduct.