Evidence Protection System Using Blockchain Technology

In the pursuit of a criminal case, evidence is the foundation upon which both sides build their respective arguments. During the investigation into a crime, great care must be taken to collect, preserve, and record evidence that could be critical in establishing the facts surrounding a criminal case. However, the importance of the evidence doesn’t end after the trial. As any good criminal defence lawyer knows, the evidence collected during a criminal case must be preserved for posterity to ensure that the due process rights of the accused are observed fully.

We have designed an Evidence Protection System Using Blockchain Technology to tackle the problem of evidence protection. This system has been proposed to achieve optimization by creating a chain of limited users responsible for the investigation. They are given their respective access to achieve transparency and immutability.

Blockchain is an assortment of connected squares that contain and track generally what occurs on a conveyed framework. Blockchain innovation is used in various evidence of idea executions, models and application frameworks. This a DotNet system where the Frontend involves Html, CSS, and JavaScript and the Backend involves ASP.net. The database used is MSSQL and IDE is Visual Studio.

The admin can manage users and assign them roles like Forensic, Evidence Room and Police. They can view the details of different evidence by searching the evidence IDs. They can view the log. If at any place the evidence details don’t match, for e.g. At the Evidence Room Level or Movement Level, the admin will get to know the status of exactly where the link is broken using blockchain technology.

The Forensic staff can access the system by logging in. They can add, update, delete or view evidence along with the details, date, time and type. They can also add the name and ID of Investigating Officer and Forensic Officer.

The staff at the Evidence Room can access the system by logging in. They can search for any evidence through evidence ID. They can add an entry and exit log along with item count, size, details, etc. They have to add the name or ID of the Officer who is taking or storing the evidence and of the Evidence Room Officer. They can also view the log by searching Evidence ID or date.

The Police can access the system by logging in using their credentials. They can search for any evidence through evidence ID. They can add logs of movement along with item count, size, details, etc. They also have to add the source, destination, date and time. They will also need to add the assigned Police Officer’s name and ID.

Advantages

• The system is easy to maintain.
• It is user-friendly.
• It can help to protect forensic evidence from getting tampered with.
• It can help in various investigations by involving only limited departments.