{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What situations could cause failure in message sending operations within a blockchain?","a":"Lost or damaged wallet private key: When  users send messages using a wallet, they need to sign the message with their private key. If the private key is lost or damaged, the message sending operation will fail."}]}],"pr":"c2d0cce0729fa937dc71935840461ea7abbf3c8798aa17899fa029914244c240"}