Problems of evaluation of digital evidence based on blockchain technologies

Abstract

Digital evidence is fundamentally different from physical evidence and written evidence. Securing physical evidence is primarily to prevent it from being lost or difficult to obtain in the future. Compared to traditional evidence, electronic evidence is fragile, easy to change and delete, and difficult to guarantee its authenticity. For example, data on a personal computer may be lost due to misuse, virus attack, etc. During the preparation of the case, the video can be deleted in order to hide the facts. In fact, most electronic evidence is stored in a central database. If the database is unreliable, the validity of the data is not guaranteed. Obviously, how to ensure the authenticity and integrity of digital evidence is very important when storing it.