{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How does the security of blockchain prevent risks such as information tampering and double spending?","a":"Information cannot be tampered with: Each block  contains a certain number of transaction records and is linked to the previous block, forming a continuously growing chain. To modify the information in a block, one must also modify all the subsequent blocks, which is a highly resource-intensive and practically impossible task."}]}],"pr":"0d8083ec14fe3c1dd889ecbd6cd81abe0efc9d85aaca58055bbe82eb789178a9"}