BSD Software Development RIPE NCC RIPE NCC OpenBSD This document specifies a Canonical Cache Representation (CCR) content type for use with the Resource Public Key Infrastructure (RPKI). CCR is a DER-encoded data interchange format which can be used to represent various aspects of the state of a validated RPKI cache at a particular point in time. The CCR profile is a compact and versatile format well-suited for applications such as audit trails, analytics pipelines, and validated payload dissemination.