{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How can blockchain technology be applied to traceability and origin tracking?","a":"Immutable: Each block contains the hash value of the previous block, forming a chain structure. Once the data in a block is changed, it will cause the hash value of the subsequent blocks to change, rendering the entire chain invalid. Therefore, to tamper with  the data on a blockchain, one must tamper with all related blocks simultaneously and not be detected during the tampering process. This makes it difficult to tamper with the blockchain's data and ensures its integrity."}]}],"pr":"983f75373c8e213dce50562b2376a52e1fdf00ec4ae1a0b6c78ca8cccbf6d44e"}