{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What is the contribution of blockchain technology to data security?","a":"Data cannot be tampered with: Blockchain uses encryption algorithms to ensure the security of data during transmission and storage. Once data is recorded on the blockchain, it is  difficult to tamper with. This makes blockchain technology an ideal tool for data preservation, helping to prevent malicious tampering with data."}]}],"pr":"172eafd2a5c21bde3794f75428a35520613ea2b3406184d5155c59f83f537605"}