A claim is a piece of information about a particular subject. It can be anything that the subject is owned by or associated with, such as name, group, preferences, etc. A claim provides a single and general notion to define the identity information related to the subject.
A user claim is a claim that is related to a user. It can be used to specify information that is directly related to the user, such as claims related to the street address, username, email, first name, and more.
An identity claim is a special claim related to identity management. It can be used to specify information about the user account or the state of a user account such as the lastLoginTime, accountDisabled and accountLocked claims. Identity claims are identified by the claim URI. All identity claims have the term "identity" appended to the claim URI as follows: