{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"Does blockchain technology have privacy protection?","a":"Blockchain technology has a certain degree of privacy protection function. In traditional application architecture design, the priority of privacy protection or security design is not high, but this situation must change today. Many cryptographic technologies are adopted in the field of blockchain applications, such as hash algorithms, encryption algorithms, public key cryptography, Merkle trees, zero-knowledge proofs, etc.\n\nFor example, in Bitcoin, the hashed public key serves as the personal account, hiding the user's personal information. In addition, the ledger of Bitcoin is public, containing the paying account, charging account, and transaction amount of each transaction. In order to further improve privacy protection, some digital currencies such as Zcash have been developed. They use innovative cryptographic techniques to provide enhanced privacy features, allowing users to control their own privacy while maintaining  a secure and transparent system."}]}],"pr":"9e36419012c6445525996d02ba72a27fceef2210d34d67951e5d7b45ce1826a5"}