Persistent

Full Title or Meme

When an entity has a Persistent Identifier the assumption is that the Behavior of the entity will remain consistent over time.

Problem

Many protocols, like OpenID Connect supply a Subject Identifier (sid) that is meant to reflect the same Subject over a period of time. Typically those protocols permit transitory binding of the Identifier to a real world entity. There appears to be no way to evaluate if the Identifier is meant to be Persistent from one connection to another other than the sort of Assurance that would destroy the pseudonymity.