{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How do smart contracts on the blockchain communicate with the application front-end?","a":"Signing and encrypting: The smart contract  signs and encrypts the transaction request to ensure the authenticity and security of the request."}]}],"pr":"adfbffe7f3742a83c15a6dd60c76e9e626d13625aea90792f2687a62292303f3"}