9.1. JWT Confirmation Methods Registration
Per this specification, the following value has been registered in the IANA "JWT Confirmation Methods" registry [IANA.JWT.Claims] for JWT cnf member values established by [RFC7800].
Confirmation Method Value: x5t#S256
Confirmation Method Description: X.509 Certificate SHA-256 Thumbprint
Change Controller: IESG
Specification Document(s): Section 3.1 of RFC 8705