{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How do consensus mechanisms work in blockchain?","a":"Define consensus goals: First, it is necessary to determine the consensus goals to be achieved by the blockchain system, such as achieving consistency of data and transactions on the blockchain among all nodes, preventing malicious behaviors such as double spending, etc."}]}],"pr":"3f76d978e63ad0c0048eeaa2a35faebfebdb967a95e2fc9a00b36750018eae28"}