{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How does blockchain ensure the integrity and security of data?","a":"Distributed storage: The data and ledgers in the blockchain network are distributed  across nodes, without a centralized storage server. This makes the data difficult to attack or destroy. Any downtime or attacks on nodes will not lead to data loss or tampering."}]}],"pr":"5d119891e5d3406e8bdea194d821d957dea9caabdebbc5f885733473c68473a3"}