{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"The recovery process for a blockchain upgrade is as follows:","a":"Deployment of new version nodes: All nodes need  to deploy the new blockchain software version to ensure synchronization and normal operation of the entire network. In this process, nodes need to synchronize block data and transaction data to rebuild a complete ledger on the new blockchain network."}]}],"pr":"76a4c5d9ba13ca9a8de7fd97b088f1e15e41078728397ecc2a496acc2804a29f"}