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I think the idea is:

* Website gives person a unique code to broadcast on the blockchain to prove they have control over that identity

* 'Approved' services claim things publically about identities (eg age, allowed to drive) which others can use to verify claims

What I don't get is:

* how you know which 'approved' services to trust in the first place

* why you'd want all of that information public

* how it'd fix the original issue

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You can treat the 'approved' services list using a whitelist, like a CA.

The other issue is that none of this is necessary. If I want to prove to Person X that Gov Y says that I have property Z, why can't I just present a cryptographically signed certificate saying I have property X. You could even have a similar revocation list as CA.

revocation seems easier with the blockchain. it just comes with too much other baggage to feel worth it.

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