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How could digitial age verification be possibly implemented with privacy in mind? (programming.dev)

submitted 3 weeks ago by [email protected] to c/[email protected]

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Many might've seen the Australian ban of social media for <16 y.o with no idea of how to implement it. There have been mentions of "double blind age verification", but I can't find any information on it.

Out of curiosity, how would you implement this with privacy in mind if you really had to?

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[–] [email protected] 3 points 3 weeks ago (1 children)

So how would you use it to solve this problem? There still needs to be some sort of foolproof way of saying “person X is only 14 years old”.

[–] [email protected] 6 points 3 weeks ago

You would prove something like "I possess a private key that matches a public key that is in this list of public keys belonging to people at least X years old". But without revealing which item in the list is the specific one for you. Which is the zero knowledge proofs' cool trick.