{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What are the potential risks of blockchain upgrading?","a":"Technical risks:  During the upgrading process, technical failures may occur in the blockchain system, such as code vulnerabilities and decreased security, thereby affecting the stability and security of the system."}]}],"pr":"88ccf929c49ab7acdd3b83f715e01e49e9622030447c4b2c38fa3412fdaaf660"}