Volume 2 - Issue 2, March - April 2026

One of the major problems in crime investigation today is the lack of security and transparency in how crime evidence is stored. Traditional systems use centralized databases, which can be easily tampered with by administrators or unauthorized users. This can lead to false evidence, wrongful judgments, and a lack of trust in the justice system. In the existing system, police departments store all crime records in one central location. If someone changes or deletes data, there is usually no way to detect it. There is also no proper tracking or verification method to ensure the evidence is genuine. To overcome these problems, we propose a Blockchain-Based Crime Evidence System. This system uses Ethereum blockchain to store crime evidence in a decentralized and tamper-proof way. Each piece of evidence is recorded as a blockchain transaction, making it impossible to change without detection. Smart contracts written in Solidity are used to manage how data is added and accessed, ensuring that only authorized users can interact with the system.

G.Deepthi, Y.Vani, B.Sai Vinay,"Crime Evidence Management System using Blockchain Technology" International Journal of Advanced Multidisciplinary Research and Educational Development, V2(2): Page(1240-1243) Mar-Apr 2026. ISSN: 3107-6513. www.ijamred.com. Published by Scientific and Academic Research Publishing.