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> Moreover, collusion between the government and the entity making the age check can also theoretically deanonimize.

Hmmm... no? That's not how zero knowledge works.

Not via breaking the ZKP, but via other methods of fingerprinting, which governments are very well positioned to enable.

I feel like it becomes bad faith at some point. With a sufficiently advanced attack, you can be personally identified today. ZKP for age verification does not make this worse, does it?

It's a bit like saying "no but Signal is not really encrypted, because the government can extract some metadata by looking at the network around the server".

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