> Look - I know you mean well, but it is clear from this discussion you aren't familiar with cryptography, system security guarantees, Internet infrastructure scaling, or what would be needed to introduce new descriptive information about a person on the Internet and not have it become a new privacy risk.

it's actually clear that you are the one who isn't familiar with this, I referenced remote attestation which you appear to know little about as it addresses the problem of identifying information (the service has no way to link tokens across without help from the CA).

you also don't appear to know what a nullifier is, in a ZKP system you submit identifying information and a hash of a secret string. the CA adds the hash to a public database and in the future you prove you one of the members of the database with a nullifier - the anonymity-set is everyone in the database who entered it prior to your submission. this can also be done with a blind signature to the same effect.

there is no further point to this discussion.