Evidence ManagementMay 2026 · 6 min read

Chain of Custody for Attorneys: What Courts Require and How to Build an Airtight Audit Trail

A broken chain of custody is one of the most common and most avoidable ways to lose a case. Defense attorneys have gotten evidence thrown out on chain-of-custody grounds in criminal cases worth decades of prison time. Civil litigators have lost damages awards because exhibit logs were incomplete. Here is what courts actually look for — and how to make your documentation bulletproof.

Why chain of custody gets evidence excluded

Courts exclude evidence when the proponent cannot establish that the evidence presented is the same evidence that was collected and that it has not been altered. A gap in the custody log — even an innocent one — creates reasonable doubt about authenticity. In criminal cases, that can mean acquittal. In civil cases, it can mean losing your key exhibit at the worst possible moment.

The 5 Events You Must Document for Every Piece of Evidence

Collection

Document who collected the evidence, from where, at what time, and under what circumstances. Courts look for gaps here first.

Transfer

Every time evidence changes hands — attorney to paralegal, firm to expert, expert to court — must be logged with names, dates, and purpose.

Storage

Where the evidence is stored, under what conditions, and who has access. Physical evidence has environmental requirements; digital has encryption requirements.

Analysis

If evidence is examined, tested, or analyzed, document who did it, when, what methodology was used, and whether the evidence was altered.

Presentation

When evidence is presented to a court, deposition, or arbitration, document the exhibit number assigned, the proceeding, and the attorney who introduced it.

How ChainKeep Handles This Automatically

ChainKeep creates a timestamped, structured log for every piece of evidence in your case. Each entry captures who handled it, what action was taken, when, and any notes about condition or context. Entries are locked once saved — you cannot go back and alter a timestamp — which gives the log the same evidentiary character as a contemporaneous business record.

The log exports as a clean PDF formatted for exhibit attachment or court filing. Nothing is stored on ShieldDrop servers. Every entry lives in your browser session or is exported immediately to your secure storage.

ChainKeep is included in ShieldDrop Legal Suite.

All 12 tools. $49/month. 7-day free trial. Evidence logs never stored on our servers.

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