{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What are the characteristics of blockchain?","a":"Decentralization: Blockchain adopts a distributed network architecture, does not depend on centralized servers or institutions, and can reduce the risk  of single-point failure."}]}],"pr":"a13fd255c422c6c173880bd46e0207575bc0ad9a9ffb37d427d46fa3088b2b8f"}