{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"The maintenance work of a blockchain database includes the following contents:↵↵1. Block generation: Creating new blocks to store transaction data and maintain the blockchain's growth.↵↵2. Transaction validation: Verifying the authenticity and compliance of transactions before adding them to the new block.↵↵3. Consensus mechanism: Ensuring the security and stability of the blockchain network by reaching agreements on the validity of transactions and blocks.↵↵4. Security protection: Protecting the blockchain from unauthorized access and malicious attacks.↵↵5. Data storage: Storing blockchain data, including transactions, blocks, and relevant information, on the network nodes.↵↵6. Cross-node communication: Facilitating communication between network nodes to maintain the consistency and synchronization of blockchain data.↵↵7. upgradability: Implementing updates and improvements to the blockchain protocol and software to enhance performance and security.↵↵8. Monitoring and analysis: Keeping track of the blockchain's performance, detecting","a":"Security and integrity control  of data: To prevent data leaks and malicious attacks, strict security measures must be implemented in blockchain databases, such as encryption technology and access control. In addition, it is also necessary to ensure the integrity of the data, avoiding data tampering through consensus mechanisms and encryption algorithms."}]}],"pr":"e91a6d45adb24a8efba62016794e5561a94b8f1bbc15c46e9708773aeee8a07a"}