JSON Web Key (JWK) Thumbprint was published as RFC 7638.
Mike Jones and I, credited as co-authors, have published "JSON Web Key (JWK) Thumbprint" as [RFC 7638]. This standard specifies a method for calculating a stable hash value for a JSON Web Key (JWK). Specifically, it specifies which fields of the JWK are used in the hash value calculation, and the canonicality of these fields…
