Zorro is a fast way for people to prove that they're unique so they can obtain democratic DAO voting rights and other benefits. Registrants submit a photo and video of their face to a public registry. (<5 min, costs covered by the protocol).  People keep an eye on the registry to make sure there are no duplicates or invalid submissions — if they find one, they can get paid for challenging it successfully. After registering, people can pseudonymize themselves to protect their privacy.