{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What is the role of Query messages in Blockchain?","a":"The role of Query messages in blockchain is to allow nodes to send requests in the blockchain network to obtain specific information or verify specific transactions. This message type is mainly used for querying data in blockchain, such as checking the balance of an account, transaction history, etc. Through Query messages, nodes can request other nodes to provide the required information, thereby achieving retrieval and verification of data in blockchain network. This helps to maintain the  transparency and security of the blockchain network."}]}],"pr":"950e268186eca9daccc6c5e536951505055a498a0317fbfba3a572512e4e0b66"}