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_currencyIf you want to create your own cryptocurrency, what is the need to make sure that the participants on this forum use only one account? Is it vital to create cryptocurrency? I do not think so.
A fingerprint or an eye scan to use a cryptocurrency is hardly worth using. With this method, we will not be able to transfer our wallets to anyone, and we are not eternal, and we need to provide options for events if something happens to us.