I am new here, so please pardon me if I do something out of place.
I was wondering if a standard can be proposed that can be used by smart contracts to know if certain accounts belong to the same person or not. It would be up to the other smart contracts to decide which smart contract of this protocol should be consulted to prove that multiple accounts belong to the same person.
Use cases where I think there is a dire need for this is NFTs that are related to certificates. Certificates issued to only one account and then rendering it un-transferable to other accounts can be a pain.
What I also have in mind is proving that all accounts belong to you after a certain duration again and again, to make sure that the “human” is still in control of it.