BQE CORE has not been audited for formal DCAA Compliance yet, though it is on our roadmap. However, it follows many of the requirements for DCAA compliance. You can turn on that DCAA compliance option from the Settings > Time & Expenses screen. Check CORE Help for details.
Audit Tracking is available in CORE in the form of a feature called Record History, which provides an audit trail of all additions, updates, and deletions within your CORE database. It tracks what changes were made, who made them, and when (date and time) they occurred in some CORE modules, though not for all yet.