{"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":"be339a541696591a9674d78abd85484b15efeb7807e5db5b0f12f4769bebf02c"}