{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"Does blockchain technology ensure security?","a":"Data immutability: Blockchain adopts a data structure linked in chronological order, with each data block containing the hash value of the previous block, forming a chain structure. Once the data in a block is modified, 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 needs to tamper with all the relevant blocks simultaneously.↵↵..."}]}],"pr":"497688db872f873661c535d333f8d86654a71c42044efdbcda74aceef914001a"}