{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How does blockchain protect personal privacy data?","a":"As a distributed database technology, blockchain plays a significant role in protecting personal privacy data. In existing solutions for protecting personal data, blockchain technology achieves privacy protection through anonymous address management  and encryption technology. When authorizing third-party services, users' personal data addresses are not directly shared with third parties, but the encrypted addresses are stored on the blockchain. This method limits third-party services to only accessing encrypted personal data, thereby protecting user privacy.↵↵To achieve fine-grained access control, blockchain-based solutions also employ smart contracts to manage access permissions. Users can set access rules in smart contracts, such as authorization and revocation of authorization. When users want to grant access to their personal data to third-party services, they can do so by setting appropriate rules in the smart contract. This ensures that third-party services can only access the personal data as authorized by the user, maintaining strict control over data access."}]}],"pr":"c718f1616348cdd4ee043edc3e461838c0015f3897d9f35fdf37ff24f36827ef"}