Graduated certification of identity
A pledge will carry more weight the greater the certainty is that the individuals making the pledge are real people, and are not “sock puppets”. Even though Platformer must hide the identities of constituents, it must also be reliable in its characterizations of the individuals who form platforms and make pledges.
Rather than hard-coding a single model of identity verification, Platformer should have an open model that allows different forms of identity verification to be ranked against one another. Since some forms of identity verification are not available to all people, and since new models occasionally emerge, we should be able to consider the relative certainty that any given individual is a unique human being, compared with all others.