Blockchain Maintenance Research

Glossary

Term Definitions Blockchain is a decentralized, immutable database maintained by multiple nodes. Tenant (member) Individuals or organizations participating in blockchain management. Resource Isolate Zone An independent resource area allocated to each tenant for deploying blockchain nodes. Blockchain Node Group A collection of nodes that belong to a tenant and participate in blockchain maintenance. Channels connect multiple tenants' dedicated communication subnets for private and confidential transactions. Consensus The process by which blockchain nodes reach agreement on a transaction. Consensus Nodes A node that executes a consensus algorithm. Consensus Organization An organization consisting of all consensus nodes responsible for achieving consensus and ordering of transactions. Channel Configuration Information Configuration data that defines the channel structure and member information. Incremental Configuration Information The part that reflects changes in channel configuration information and is used to update existing node information. Endorsement Policy Rules defined in the chain code to specify which nodes need to endorse transactions. Short Answer Questions

Explain the role of resource isolation zones in multi-tenant blockchain systems. Resource isolation zones provide each tenant with an independent resource space to ensure resource isolation between tenants, prevent data leakage and resource competition, and improve system security.

What role does a channel play in a blockchain system? Channels establish private communication subnets between different tenants, allowing selected tenants to share and trade data, achieving data isolation and privacy protection.

Briefly describe the process of generating a new block. The client sends a transaction request, the node simulates the execution of the transaction and endorses it, the client collects the endorsed transaction records and sends them to the consensus node, the consensus node verifies the order and generates a new block, and synchronizes it to other nodes.

Explain the role of incremental configuration information and how it simplifies the process of new nodes joining the channel. Incremental configuration information only contains the changed part of the channel configuration information. New nodes only need to obtain this information to quickly synchronize without downloading the complete channel configuration information, which reduces network transmission and synchronization time.

Describe the role of the management node in the process of adding new tenants to the channel. The management node receives the new tenant joining request, instructs the new tenant to deploy the node, obtains and sends the channel configuration information, and coordinates the new and old tenants to complete the node joining process.

Why do you need to endorse transaction records? The endorsement mechanism ensures that the transaction records are verified by authorized nodes, prevents malicious nodes from submitting illegal transactions, and improves the credibility and security of transactions.

Explain the importance of consensus in blockchain systems. The consensus mechanism ensures that all nodes agree on the transaction order and block content, ensures data consistency, and prevents data forks and malicious tampering.

Why do you need to update the endorsement policy to add new nodes? After adding a new node, you need to update the endorsement policy to include the endorsement authority of the new node to ensure that the new node participates in transaction verification and maintain the security of the blockchain.

Briefly describe the three main operations after a new tenant joins the channel. Establish a communication connection with an existing node, obtain historical block data, synchronize new block data, and complete data synchronization and status update after joining the channel.

What role does the TLS root certificate play in node communication security? The TLS root certificate is used to verify the identity of the node, ensure the security of the communication connection, prevent man-in-the-middle attacks and data leakage, and ensure the confidentiality and integrity of data transmission.

Thesis title

Analyze the data isolation and privacy protection mechanism in a multi-tenant blockchain system.

Explore the application of incremental configuration information in optimizing the scalability of blockchain nodes.

Compare the advantages and disadvantages of different consensus algorithms in terms of performance, security, and scalability.

Study the cross-tenant transaction and data sharing mechanism based on smart contracts.

Design and implement an efficient blockchain node management and monitoring system.