I am working on something that relates the ownership of the ethereum account address. I have a situation depicted as follows:
Someone issues a token and issuer KYCed(off-chain) my ethereum account address, So I am able to hold or buy the tokens from the crowdsale. But somehow I lost the private key of my wallet now I am not able to access my account, I quickly contact to my token issuer which has some backdoor mechanism (Not known for now but let's predict issuer has some magic) to transfer those tokens from my previous account to new account but the problem now for token holder is to verify the ownership of its lost account.
So what will be the feasible ways to prove the ownership of the address?.
I know this is something a researched base question but I really want the inputs to formalize the idea.
Any inputs are appreciable.