{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What are the common security challenges of blockchain technology?","a":"Data Security: Although blockchain technology itself has high security, the data on the blockchain can still be attacked during transmission and storage. For example, node devices may be invaded, leading to  data leaks or tampering."}]}],"pr":"b1b6543681ea50e562072512063156d187f6dcb712d4c93366006ffabf8a0fce"}