{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What are the security vulnerabilities of blockchain?","a":"Privacy exposure and data breaches: Although blockchain has decentralized characteristics, privacy leaks and data tampering issues can still occur during data transmission and  storage processes."}]}],"pr":"c9947683f730b9cc17f181068e86cafb848914dffba9728991a257d44b12bad6"}