{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What is the contribution of blockchain technology to information security?","a":"Data Integrity: Blockchain ensures the consistency and integrity of data through encryption algorithms (such as SHA-256)  and consensus mechanisms (such as proof of work). Each block contains the hash value of the previous block, forming a chain structure. Once the data in a block is changed, it will affect the subsequent blocks."}]}],"pr":"590e744af5c3df6418b2207a4ecf5b14a50d6dc1a231f673fcfadd429afdda17"}