{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What are the applications of blockchain in the field of environmental protection?","a":"Green Supply Chain: Using blockchain technology to establish an environmentally friendly supply  chain system, achieving full-process monitoring of raw material procurement, production processes, and product recycling, thereby improving resource utilization efficiency."}]}],"pr":"841ae62bfbdcfa5d2bbfd14df81c006f89e0e7c38ba4de24eebf78d39bd71e7d"}