{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How does blockchain technology protect personal privacy?","a":"Blockchain technology protects individual privacy by adopting various cryptographic methods. Firstly, in digital currencies such as Bitcoin, hashed public keys are used as personal accounts, hiding personal information. Additionally, personal accounts  can be designed as one-time-use, with a new account being used for each transaction, making it difficult to infer user identities by tracking transaction records. The overall ledger of the blockchain is public, but information such as payment accounts, charging accounts, and transfer amounts in each transaction record can be hidden using technologies such as encryption, hashing, Merkle trees, and zero-knowledge proofs. For example, the digital currency Zcash adds privacy-preserving protocols to Bitcoin, further obscuring transaction details."}]}],"pr":"aedb468b8be431b4a01eb2fbb7799b632d3fb1ef738da8fcfcdafc4e61d6e9e4"}