{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How does blockchain technology address data security and privacy protection issues?","a":"Immutability: Blockchain adopts a  chain-like structure, dividing data into individual blocks. Once a block of data is added to the chain, it cannot be altered or deleted, ensuring the integrity and reliability of the data."}]}],"pr":"d9561e0beac6a7f33ea2b42c3b0fdd19adaa6c343ee1c5d303c932cc85efcf38"}