{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How can blockchain technology be applied in the field of traceability and origin tracking?","a":"Immutability: Blockchain technology ensures the integrity and authenticity of data records  through encryption algorithms and timestamp technology. Every data change generates a new block, and once the previous block is added, it cannot be tampered with. This is of great significance in the field of traceability, ensuring the accuracy of product information."}]}],"pr":"ea5c48cdef2dc3124cad9d2711b04a10d704c496253879004d1eabdd4f880b5d"}