Evidence Chain of Custody
A tamper-evident evidence trail from seizure to courtroom.
Full custody visibility from seizure to courtroom
Every seizure, transfer, and forensic handoff is logged with a blockchain-anchored timestamp and digital signature — from the officer who collects it, through Malkhana and FSL, to the day it's presented in court.
How the process runs, step by step
Officer registers evidence — ID, type, GPS, timestamp generated
Photographs and seal/bag numbers hashed and recorded
Custody transfer to Malkhana — sender, receiver, signature logged
Dispatch to FSL — courier, vehicle and receiving officer recorded
FSL report hash anchored on submission
Court presentation logged, closing a fully verifiable timeline
What this phase delivers
Evidence Registration
Officers log evidence ID, type, description, GPS and officer ID at the point of seizure. The system issues a unique evidence ID, blockchain transaction and QR code.
Photo & Seal Hashing
Every image — front, back, serial number, packaging, seal — is hashed on upload. Any later edit breaks verification.
Custody Transfer Logging
Sender, receiver, time and digital signature recorded at every handoff — officer to Malkhana, Malkhana to FSL, FSL to court.
FSL Report Verification
Only the report's cryptographic hash is anchored on-chain, keeping sensitive forensic content in secure government storage while proving it hasn't changed.
Full Audit Timeline
A chronological, blockchain-verified view of every event an evidence item has passed through, ready for court.
Why this phase matters
Prevents tampering with physical and digital evidence
Creates a transparent, tamper-evident chain of custody
Strengthens the defensibility of investigations in court
Reduces disputes over missing or altered evidence
Bring a transparent trust layer to your department
See how Gradify PoliceTrust anchors onto CCTNS and ICJS without disrupting a single existing workflow.