{"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":"640564d94e90975ffd1cae937b124e3b03f227149b9a8e05ca87b3d29e0064c6"}