{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What are the privacy protection mechanisms in blockchain?","a":"Homomorphic Encryption (HE): Homomorphic encryption is a type of encryption that allows mathematical operations to be performed on encrypted data, enabling the encryption of data at rest and in transit, thus  protecting the privacy of users."}]}],"pr":"11a720d1a91d27177b3df33a4c244050ea2615fd07b5b98b131a3e4f28bf696f"}