{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How does blockchain technology ensure security?","a":"Data Integrity: Blockchain employs a highly redundant database structure, where each block contains the hash value of the previous  block, forming a chain-like structure. Once the data in a block is altered, it will cause the hash value of subsequent blocks to change as well, thereby"}]}],"pr":"554aca5a4542fa4525991f971547ce1f58bccc7030fd886a1485de4df0a2bbf0"}