{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"The security guarantee mechanism in blockchain refers to what?","a":"Decentralization: Blockchain adopts  a decentralized network architecture, where data storage and processing are distributed across multiple nodes, and there is no single central controller. This decentralized feature makes the blockchain system more secure because attackers cannot tamper with data by attacking a single node."}]}],"pr":"5aad755ec91b6de321217f8dc7d2e03a6f5d4b6fa499e2ccddc4d90b81c24590"}