{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What definitions are needed for query messages in blockchain smart contracts?","a":"Query Request: A query request is a message received by the smart contract from an external party initiating a query request. These messages usually contain the necessary  parameters and relevant information for the query, such as query conditions, ranges, etc."}]}],"pr":"07ea3ae989b6ebc64ff6369531c17a37b0ebc11a89b21e05a2685f6aa5d90a3d"}