{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How can the security of blockchain be ensured?","a":"Interest distribution and fairness: HNB uses the Dpos based on identity  attributes to select nodes, fully considering the interest distribution and fairness, avoiding the situation of a single group behaving maliciously."}]}],"pr":"c6191332920bd6237b018d9d500cc21d706aacf186c36b09fc75426ac752477d"}