With regards to Tinder, I fail to see how this solves the "prove you're a human" problem, when those credentials will then inevitably leak, be stolen or resold.

With regards to Tinder, I fail to see how this solves the "prove you're a human" problem, when those credentials will then inevitably leak, be stolen or resold. Unless you're doing constant live verification which takes the privacy problem up several more notches, how do you know the user is still the ID'd person?