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.