Comment by paulvorobyev

>IMO, there's a multibillion dollar company waiting to be founded to provide authenticity verification services for humans online.

The US government does authentication in real life via social security numbers. Of course, they are not very secure: a government-operated SSO or auth API for third-party applications would be a logical next step.

It would guarantee uniqueness and authenticity of users. Even better, if this were an inter-governmental program, it would deter government meddling: a state issuing too many tokens for fake accounts would arouse suspicion.