Please walk through just how you'd accomplish this, at scale, in a system with many chain-of-authentication holes, spanning international jurisdictions.

Please walk through as well, what the privacy, surveillance, data-disclosure, third-party bad-actor, and authoritarian-government risks of such a system would be.

Exactly the same as it already works in most countries

<https://news.ycombinator.com/item?id=49135259>