{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What are the differences between blockchain and centralized databases?","a":"The main differences between blockchain and centralized  databases lie in decentralization, data security, and transparency. Blockchain is a decentralized database technology that jointly maintains and validates data through numerous computers (nodes) distributed globally, achieving decentralized storage and management of data. Centralized databases, on the other hand, rely on a central server or institution to store and manage data, which is vulnerable to hacker attacks and single-point failure risks.↵↵Blockchain ensures data security and consistency through encryption algorithms and consensus mechanisms. Each block contains a certain amount of transaction data and is interconnected with other blocks, forming an immutable chain structure."}]}],"pr":"a9572269ec57549ba38827769ffd49ef392bc5e27c8ad1da7ce953bef6a49b2b"}