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.
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.