I made an error. This:

Hive has stake-based voting. You can fake money.

should read "You can't fake money."

It would be something that would even allow a stolen account to be de-verified based on the real person choosing to go through the same process on a different account. Would be something like this: "if you steal my account you don't steal my identity... just my funds"

If someone steals an active user's account while that user cannot or won't start account recovery for some reason and starts posting with it, I think that person will be identified as not being the original owner rather quickly. We all have a unique writing style that is very difficult to spoof. The more you have written the more identifiable your personality. In that sense, a proof of unique identity already exists.