What is chain of custody and why is it essential for admissibility?

• A. A chronological record of the attorney's actions in filing the case.
• B. Documentation of every person who handled the evidence from collection to courtroom, ensuring integrity and authenticity.
• C. A map of where evidence is stored during the trial.
• D. A report summarizing the testimony of witnesses.

Answer: (B)

Chain of custody is the documented, unbroken trail showing every person who handled evidence from the moment it is collected until it is presented in court, along with the times, places, and conditions involved. This record ensures the evidence remains authentic and untampered, so the item offered at trial is the same one that was seized and analyzed. Maintaining this continuity is essential for admissibility because it lets the court trust that the evidence hasn’t been altered, substituted, or contaminated, which could undermine the case. In practice, it means proper collection, sealing, labeling, secure storage, and a clear transfer log for each time the item changes hands or sites, with details of who accessed it and under what conditions. The concept extends to digital items as well, where hashes, access logs, and metadata serve the same purpose of verifying integrity. Other descriptions—like a record of filing actions, a storage map, or witness summaries—do not capture the ongoing documentation of handling and transfer that preserves the evidence’s integrity and admissibility.