A Privacy Preserving Based Using Block Chain Method

Security camera video is crucial for crime prevention and investigation in smart cities. Closed-circuit television (CCTV) cameras are critical for a range of public tasks in a smart city; when coupled with Internet of Things (IoT) technology, they may morph into smart sensors that help in safety and security. The veracity of the camera, on the other hand, raises concerns regarding data integrity and application. In this paper, we present a blockchain-based method for ensuring the trustworthiness of preserved recordings, allowing authorities to determine whether or not a video has been tampered with. It enables in differentiating between real and fake recordings, as well as assuring the authenticity of security cameras.Because the blockchain's distributed ledger also records the information from the CCTV camera, the danger of data manipulation is eliminated. This immutable ledger decreases the risk of copyright infringement for law enforcement agencies and clients users by ensuring possession and identification.