Comprehensive and Detailed Explanation From Exact Extract:

The Chain of Custody (CoC) is the documented and unbroken transfer record of evidence handling, from seizure to presentation in court. It ensures that the evidence has been preserved, controlled, and protected from tampering or alteration.

Evidence record documents evidence details but is less formal than CoC.

Event log and audit log are system-generated records and do not replace the formal CoC.

CoC is a fundamental forensic principle as outlined by NIST SP 800-86 and the Scientific Working Group on Digital Evidence (SWGDE) best practices, ensuring evidence admissibility and reliability in legal proceedings.