{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What is the role of data hashing in blockchain?","a":"Achieving data anti-tampering: Due to the high computational cost of hash value calculation, tampering with data on the blockchain involves a  large amount of computation. If an attacker wants to tamper with the data on the blockchain, they need to recalculate the hash value after the tampering. This makes it difficult for attackers to tamper with the blockchain data, ensuring the security of the blockchain system."}]}],"pr":"4cd45655433984f87d4a46fb732c8a9f198095e768d545f597635a673bc029ac"}