{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What are the roles of consensus mechanisms in blockchain?","a":"Increase  decentralization: The consensus mechanism enables collaboration between multiple nodes, making the blockchain system more decentralized. Under the consensus mechanism, nodes do not need to trust any centralized institutions, thereby improving the system's security and reliability."}]}],"pr":"23e0552fbbd13cf6aecde89e7ea1cbcc7374698b090717af4e994306bdfc488a"}