The invention discloses an electronic evidence storage and
collection system and method based on a block chain. The
system comprises an evidence storage module and an
evidence collection module. The evidence storage module comprises a first user login module, an identity
verification module, an evidence uploading module, an on-chain storage module and an off-chain storage module; the evidence obtaining module comprises a second user login module, an authority
authentication module, an automatic evidence obtaining module and a screen recording evidence obtaining module. Various evidences are uploaded through the evidence storage module, and the main body part of the file is stored in the
distributed file system under the chain through the on-chain storage module and the off-chain storage module, so that the block chain storage pressure is relieved, and the
storage efficiency of the
system is improved. According to the method, evidence obtaining operation is performed through the evidence obtaining module, illegal users are filtered through the authority
authentication module, automatic downloading and storage of evidences are realized through automatic evidence obtaining and screen recording evidence obtaining, screen recording recording is performed on the whole evidence obtaining process, and the whole recording process is uploaded to the block chain, so that legality and security of the whole electronic evidence obtaining process are realized.