{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What is the significance of blockchain for network security?","a":"Data integrity and traceability: Blockchain uses encryption algorithms to ensure that data cannot be tampered with. Each block contains the hash value of the previous block, forming a chain-like structure. Once the data in a block changes, it will cause the  hash value of subsequent blocks to change."}]}],"pr":"61ec3af5318371690dcfbc92b9492242ba805e346b986314a9c26c274350a6f5"}