It's not the live forever that's a problem (that can be solved with a revocation strategy) it's the identity verification that's a problem.You need Oracle's to verify a signature ....
Is associated with a real (or realish) human. That's why I like keybase.io . It's put together a system to be that acts at that Oracle and has put together a recipe to self verify.
In theory yes. There are a few "identity" projects out there that use Blockchain or Blockchain like systems. Part of the issue is identity verification. That's why I like...