What is a claim?

A claim is a statement about a property of a subject; confirmed by an IdP or issuer it becomes an attribute assertion, and in SSI a claim is a subject-attribute-value triple that can be linked with others into a graph.

Synonyms: Aussage, Behauptung. The word signals that the statement is asserted, not necessarily verified: a claim "age over 18" only becomes trustworthy once someone the verifier trusts has signed it.

Go deeper:

• Claims-based identity (Wikipedia) — claims as statements an issuer makes about a subject, and how applications consume them.