{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How does blockchain technology ensure the tamper-proof nature of data?","a":"Blockchain technology ensures the security and immutability of data through various means such as decentralization, cryptographic technology, timestamps, and distributed storage. Decentralization means that there is no central node, all nodes are equal, and each node has a complete copy of the ledger. Any modification requires consensus from all nodes, so no one can  modify the data in the blockchain alone. Cryptographic technology uses digital signatures to verify the authenticity and source of transactions, ensuring that only those holding private keys can sign transactions. In addition, blockchain also uses hash functions and Merkle trees to ensure the integrity and immutability of data. Timestamps are used to represent"}]}],"pr":"44729eac44fdd375569f5012a963813ecf5fd7ffc0b1ac329e39722ec82eb770"}