{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What are the execution risks involved in implementing a blockchain upgrade?","a":"Technical risk: During the upgrade process, technical failures  such as code defects and security vulnerabilities may occur in the blockchain system, thereby affecting its stability and security."}]}],"pr":"b474e1c426fbd63deb700cfd309ae41842ad4583af108ca8a39671f89ed5cf00"}