 as ISO 14721:2003.] 
NOTE – Informative references are listed in annex B. 
 
AUDIT AND CERTIFICATION OF TRUSTWORTHY DIGITAL REPOSITORIES 
CCSDS 652.0-M-1 
Page 2-1 
September 2011 
2 OVERVIEW OF AUDIT AND CERTIFICATION CRITERIA 
This section provides an overview of some of the key concepts that are incorporated in the 
design of the metrics in this Recommended Practice. 
2.1 
A TRUSTWORTHY DIGITAL REPOSITORY 
At the very basic level, the definition of a trustworthy digital repository must start with ‘a 
mi