ACE (Audit Control Environment)
The Audit Control Environment is a mature set of software designed to help librarys and archives prove their holdings are intact and trustworthy. Recent developments of ACE include a new token store format to allow ACE tokens to be easily exported, transferred, and independently verified by third parties. To support the ACE tokens a python proof of concept has been developed to allow 3rd parties to write their own file validation routines using ACE tokens. Developed by University of Maryland. Written in Java.