{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What are the advantages of blockchain in terms of privacy protection?","a":"Immutability: Once data is recorded in the blockchain, it is difficult to modify.  This makes blockchain a highly reliable storage method, helping to maintain the integrity of the data."}]}],"pr":"c6266611a2cbc09d6afd53482383646a7d41efef32ab4ff0981911c3574bd1c6"}