Libraries Group (RLG) and the National Archives and Records 
Administration (NARA) created a joint task force to specifically address digital repository 
certification. That task force published Trustworthy Repositories Audit & Certification: 
Criteria and Checklist  (TRAC—reference [B3]), on which this Recommended Practice is 
based. 
Through the process of normal evolution, it is expected that expansion, deletion, or 
modification of this document may occur.  This Recommended Practice is therefore subject