{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What are the technical principles of blockchain?","a":"Decentralization: Blockchain adopts a distributed network architecture, where data is  not stored and managed on a central node but is distributed across multiple nodes throughout the network, reducing the risk of single-point failure."}]}],"pr":"e0c4952e16d4b38da40c5fb5513a0e4fc59f22f1d1071ab20b700e0252533c31"}