{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How does blockchain technology solve the problems of data security and privacy protection?","a":"Smart contracts: Smart contracts on the  blockchain are automatically executed programs that facilitate and enforce the execution of contracts, helping to maintain data privacy and security by only allowing authorized access."}]}],"pr":"754bdb7d71ed0ed3b0100b81ecee918356bf57cddba0ac26b41ca7c9d000aeaf"}