Links listed at the end of this presentation
The Authenticity Institute
Reliable Identities, Inc.
Council of Attestation Officers, Inc.
Mail Slot, Inc.
Abyx Properties, Inc.
Video (2 minutes): 
White Paper:  HAVE Identities Before You MANAGE Them
What Is PKI?
ReliableIdentities.com
Attestation.pro
Mail-Slot.com
Abyx.com