INDICATE MEMBERSHIP PROFESSIONAL

Brand	Owner (click to sort)	Address	Description
AMERICAN SOCIETY OF FACIAL SURGEONS	American Society of Maxillofacial Surgeons	444 East Algonquin Road Arlington Heights IL 60005	indicate membership in a professional association of maxillofacial surgeons;
SVC	SOCIETY OF VACUUM COATERS	71 Pinon Hill Place, N.E. ALBUQUERQUE NM 87122	indicate membership in a professional, trade and educational organization dedicated to development of equipment and processes for high-volume production of coatings using vacuum-based processes;
WNHL	NATIONAL HOCKEY LEAGUE	One Manhattan West 395 Ninth Avenue New York NY 10001	indicate membership in a professional hockey organization;
	Where the owner name is not linked, that owner no longer owns the brand

Technical Examples

In accordance with the invention, a presenter of credentials presents to a recipient of credentials one or more chains of group credentials to prove entity membership or non-membership in a nested group in a computer network. The ability to present a chain of credentials is particularly important when a client is attempting the prove membership or non-membership in a nested group and one or more of the group servers in the family tree are off-line. A chain of group credentials includes two or more proofs of group membership and/or proofs of group non-membership Furthermore, the proofs of group membership may include one or more group membership certificates and/or one or more group membership lists; and proofs of group non-membership may include one or more group non-membership certificates and/or one or more group membership lists.