Abstract: The current system for maintaining crime records and criminal data lacks comprehensive information on offences and perpetrators, making it less secure and susceptible to fraud. This study proposes the implementation of a blockchain-based system to safeguard data and improve security measures. By utilizing blockchain technology, crime investigators can access the database using their authentication credentials and view reports authored by police and witnesses. Investigators also possess the authority to update and modify data, expediting investigations and aiding in the identification of criminals. While previous research has focused on centralizing digital evidence management, this approach poses a risk of compromising confidential operational and investigative information if the central server is compromised. To mitigate this risk, a distributed system environment using blockchain technology is proposed for managing digital evidence and investigation data. However, the storage of massive volumes of data, such as evidence films, in a blockchain can adversely impact performance. Therefore, a three-tier blockchain architecture is proposed, consisting of hot and cold blockchains. The cold blockchain stores non-changing content and files, while the hot blockchain stores frequently changing information.
The study evaluates the system's performance in terms of digital crime evidence storage and query processing, highlighting the capabilities and benefits of the multi-level blockchain architecture. Implementing this three-tier blockchain architecture can significantly enhance the security and efficiency of digital crime evidence management, thereby improving the investigative process and aiding in the fight against crime.

Keywords: Crime Record, Blockchain, Security, Cryptography.

PDF | DOI: 10.17148/IJARCCE.2023.12674

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