{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"The handling principles of failed blockchain upgrade include the following aspects:↵↵1. Root cause analysis: Investigate and identify the reasons for the failed upgrade, such as technical issues, human errors, or insufficient preparation.↵↵2. Emergency response: Establish an emergency response mechanism to ensure the stability and security of the blockchain system. This may include migrating to a previous version of the blockchain or implementing temporary measures to prevent further damage.↵↵3. Communication: Keep stakeholders informed about the failure and the steps being taken to resolve it. This includes providing regular updates and addressing any concerns or questions they may have.↵↵4. Reputation management: Minimize the impact of the failed upgrade on the reputation of the blockchain project and maintain trust by being transparent about the issue and the steps taken to resolve it.↵↵5. Lessons learned: Document the failed upgrade and its causes, and use this information to improve the upgrade process and prevent similar issues in the future.↵↵6.","a":"Stability principle: Maintain the stability of the blockchain network, avoid the whole network collapse or serious failures due to upgrade  failure, and affect normal operation."}]}],"pr":"ee9f6c1b5435aee352e8261597a60c8f8f361d6bcc2041ee4b0302b371a40a72"}