{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How does blockchain technology solve the privacy protection issues in data storage and transmission?","a":"Immutability: Once data is recorded on the blockchain, it cannot be  tampered with or deleted. This feature ensures that the data remains secure and reliable."}]}],"pr":"e13bf1a279ae0ae47116b3207599f2d7200cd10b2cabebd8f8909c96fe3acd4f"}