{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"The recovery process after a blockchain upgrade includes the following steps:","a":"Synchronize block data: After installing the new version of  the node software, the node needs to synchronize the block data from the known latest block."}]}],"pr":"ad913943071e0c6543d6d5720391d576b4d213f7869936c0d693aa9842fdd6f1"}