{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What are the potential paths for the upgrade of blockchain technology?","a":"Technological innovation: Continuously optimize the core technology of blockchain, such as improving transaction processing speed, reducing transaction costs, and enhancing  system security."}]}],"pr":"5dcafcca1f9293df3e04211badfe5dfbd7355e84e6f0d17aca6ec4348a188467"}