With the development of the times, Various types of digital evidence have emerged one after another in the trial process. Therefore, it is a new challenge for the judiciary to build a "Digital evidence" storage system to ensure identity and maintain the ability of evidence. Judicial Yuan, Ministry of Justice, Taiwan High Prosecutors Office, National Police Agency and Ministry of Justice Investigation Bureau jointly plan and build a "Blockchain-applied Judicial Alliance for Digital Era" in response to the digital evidence storage, authentication and verification in the digital era, with the goal of gaining people's trust and judicial credibility.