{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What are the characteristics of blockchain?","a":"Decentralization: The blockchain adopts a distributed network architecture, does not rely on centralized servers or institutions, and can reduce the risk  of single-point failure."}]}],"pr":"a81f912c1bac7440e0db534d2353c5e56ad7291fb62a27cc55bd17f1b23ad6ca"}