{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What are the privacy protection mechanisms in blockchain?","a":"Encryption Algorithm: By encrypting the data, the privacy of the data is ensured. Common encryption algorithms  include symmetric encryption, asymmetric encryption, and hash algorithm, etc."}]}],"pr":"dcb6e4059a6829b703bd2da8b29b20f5650b5645f39eeb40aa55f8be4e2ca07a"}