There's no need for real names, what is needed is that you can't create multiple accounts. This can be done without linking identities by using two unrelated pa

There's no need for real names, what is needed is that you can't create multiple accounts. This can be done without linking identities by using two unrelated parties. Party A is the platform and B is the authenticator, when creating an account on A you are sent to B to authenticate your identity and get a token to finish your account creation on A. As long as A and B are separate, A never knows the identity of the user and B doesn't know what the user represents himself on A.