I am creating a money supply which distributes duration to addresses but need a way to verify each person has only one account
would you give your fingerprint or eye scan for a fair money supply?
see
https://en.wikipedia.org/wiki/Time-based_currency I will not do that. I am afraid to sell my information. because my information holders will be able to do other illegal things that I don't know. In the crypto market, we should not provide our personal information for some bad projects. They can sell all our information just to earn more money.