{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How is the security of blockchain ensured?","a":"The nodes selected by using identity attribute Dpos consider interest distribution and fairness, avoiding the situation of a single group behaving maliciously.\n2. Fast consensus formation, the speed does not slow down with  the increase of nodes, ensuring the efficient operation of the blockchain.\n3. It has scalability, supporting a large number of nodes, enhancing the stability and adaptability of the blockchain."}]}],"pr":"70d95bef1ef5c433a535d7b35b631503c8a4f53217ce86052214179d82de6210"}