{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What is the handling method for a failed blockchain upgrade?","a":"Check on-chain data: Inspect the blockchain data to ensure its completeness, and verify that there are no missing or damaged data. If there  are data issues, data repair or resynchronization is required."}]}],"pr":"cd68e0c674ac3c7d0c3b6f65711635d8f05ea9947fb688da8ee1cf618ca55524"}