{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What are the common types of message passing in a blockchain?","a":"Block Messages: Block  messages refer to the information contained in newly generated blocks in blockchain networks. These messages include the header information of the block (such as block number, timestamp, difficulty coefficient, etc.) and the transaction records in the block body."}]}],"pr":"38bb3a0fa22de431137b33f47353ccc802405895e254d80052ff9bd259389b1c"}