{"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:\n\n1. Root cause analysis: Investigate and identify the reasons for the failed upgrade, such as technical issues, human errors, or insufficient preparation.\n\n2. 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.\n\n3. 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.\n\n4. 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.\n\n5. 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.\n\n6.","a":"Security principle: When dealing with upgrade failure issues, the first thing to  ensure is the security of the blockchain network, preventing risks such as hacker attacks and data breaches."}]}],"pr":"b74000da4f8d675e47a114e01ce32c8b9c8cfd5636e4876433be74873d3c131b"}