Digital proof, akin to proof from CCTV and occasion knowledge recorders, is very invaluable in felony investigations, and is used as definitive proof in trials. However, there are dangers when digital proof obtained in the course of the investigation of a case is managed by means of a bodily onerous disk drive till it’s submitted to the courtroom.
Previous research have centered on the built-in administration of digital proof in a centralized system, but when a centralized system server is attacked, main operations and investigation info could also be leaked.
Therefore, there’s a have to reliably handle digital proof and investigation info utilizing blockchain expertise in a distributed system setting. However, when massive quantities of data-such as proof videos-are saved in a blockchain, the information that should be processed solely inside one block earlier than being created improve, inflicting efficiency degradation. Therefore, we suggest a two-level blockchain system that separates digital proof into cold and hot blockchains.
In the felony investigation course of, info that continuously modifications is saved within the scorching blockchain, and unchanging knowledge akin to movies are saved within the chilly blockchain. To consider the system, we measured the storage and inquiry processing efficiency of digital crime proof movies in accordance with the totally different capacities within the two-level blockchain system.