{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How can the fairness and justice of PoS mining be ensured in the blockchain?","a":"Randomly selecting validation nodes: To avoid a specific node controlling the blockchain network, PoS mining systems usually randomly select a certain number of validation nodes to verify transactions. In this way, every node has a chance to become a validator, ensuring  the fairness of the network."}]}],"pr":"90a74dd233921889aeac70830da9481614ce89c4f1ac1e3245a517b2ff7971c2"}