{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How does blockchain technology solve the problem of data tampering and forgery?","a":"Data cannot be tampered with: Each data 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, making the entire blockchain invalid."}]}],"pr":"ae343db0697e02c3fd08a9d5f8dd23a6e6c327c9d11ff48573ca5fc5ae525079"}