{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How does blockchain technology solve the problem of data privacy protection?","a":"Data cannot be tampered with: Blockchain adopts encryption algorithms to ensure that once data is recorded in a block, it is difficult to tamper with it."}]}],"pr":"c3e7496da5790c62fe86880a7a32c54776e664292182107b1b43a5bd27e4b52d"}