{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How to limit message sending to the bank module in a blockchain?","a":"Smart Contract Limitations: In a blockchain, the message sending of the bank module can be implemented through smart contracts. Developers can set the conditions and rules for sending messages in the smart contracts, such as the credibility of the nodes sending messages needs  to meet a certain level."}]}],"pr":"018d7d07ee6a49a5d692a448669c88c2c007c688fee53a2c68c9e453030e87f5"}