{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How does blockchain ensure the immutability of data?","a":"Decentralization: Blockchain adopts a distributed network architecture, without a central node, and  all nodes have equal status. Each node keeps a complete copy of the ledger, and any data modification requires consensus from all nodes. Therefore, it is impossible for a single entity to tamper with data alone."}]}],"pr":"c36edd07eda0b390549b331f9cce4e1f38e914087c94934cf4588be431160647"}