{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How do consensus algorithms in blockchain ensure the consistency and reliability of data?","a":"Node role assignment: In the consensus algorithm, nodes are divided into different roles, such as proposer (Proposer), acceptor (Acceptor), and learner (Learner). These roles have different functions and responsibilities."}]}]}