the.com/chain of evidence
Proof that your proof wasn't left alone with strangers.
means The unbroken, documented trail showing who collected, handled, and stored a piece of evidence from the moment it was found until it appears in court, proving it wasn't tampered with or swapped.
from A 20th-century legal-procedural term, not a poetic coinage — it emerged from forensic science and courtroom practice as a literal metaphor: evidence is treated like a physical 'chain' of custody, where each handler is a link, and the chain must stay intact or the evidence's credibility breaks. The phrase sits alongside the older legal concept of 'custody,' formalized as forensic science matured in the 1900s and courts began demanding rigorous proof that samples weren't contaminated or switched.
- break it
- evidence becomes inadmissible, not just suspicious
- requires
- signed log of every hand that touched it
- applies to
- digital files too, not just bloody knives
- weak link
- usually the evidence locker, not the crime scene