{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How can a larger safety margin be maintained in a blockchain?","a":"Difficulty in data tampering: 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 that block to change, which will then affect the hash value of the subsequent blocks. Therefore, it is nearly impossible to tamper with the data in a blockchain system without being detected."}]}],"pr":"44376a7521828fd9fc02c1f6010e95227b552bb48eab98f269f0c1f493bf1cbc"}