There are other ways to attack cheating. Besides, trusting a remote system you don't control is a case study in Security Failures 101. It's about as likely to w

There are other ways to attack cheating. Besides, trusting a remote system you don't control is a case study in Security Failures 101. It's about as likely to work in the long term as typical DRM schemes: it does create a barrier, and it will deter casual violation by most people for as long as that barrier holds, but if there's enough incentive then sooner or later someone who knows what they're doing will break the barrier, and then they might share that ability with everyone else anyway.