Blockchain cross-chain communication learning guide

Learning objectives

This guide is designed to help you review and understand the relevant knowledge about blockchain cross-chain communication technology.

Knowledge point summary

Blockchain as a service (BaaS): A platform that provides enterprise users with rapid deployment and management of blockchain network services.

Cross-chain communication: A technology that realizes information and value exchange between different blockchain networks.

Routing node: A functional node that connects different blockchain networks to realize cross-chain communication routing.

Communication protocol: The rules followed by blockchain networks for data exchange.

Connection request: A request initiated by a user or blockchain network to establish cross-chain communication.

Routing information: Information about the blockchain network that currently implements communication routing via a routing node.

Permission information: Information indicating whether a routing node is allowed to be reused by multiple blockchain networks.

Routing list: A list of routing nodes and their corresponding blockchain network information on the BaaS platform.

Transaction request: A request corresponding to a transaction operation across multiple blockchain networks.

Release request: A request initiated by a user or blockchain network to end cross-chain communication.

Test questions

Short answer questions (2-3 sentences per question)

What is a BaaS platform? What role does it play in cross-chain communication?

What is a routing node? How does it implement communication routing between multiple blockchain networks?

Explain what a connection request is and describe its role in establishing cross-chain communication.

What role does routing information play in cross-chain communication?

How does a BaaS platform determine whether communication routing between multiple blockchain networks is supported?

Explain the concept of permission information and how it improves the security of cross-chain communication.

What is a routing list? What role does it play in managing cross-chain communication routing?

Describe how routing node reuse is implemented and explain its advantages.

Explain the role of transaction requests in cross-chain communication and give examples of its application scenarios.

What is a release request? Describe its role in ending cross-chain communication.

Answer

The BaaS platform provides enterprise users with services for rapid deployment and management of blockchain networks. In cross-chain communication, the BaaS platform plays the role of a neutral third party, responsible for automatically configuring communication routing between blockchain networks as needed.

Routing nodes are functional nodes that connect different blockchain networks. They store routing information, communication addresses, and port information of blockchain networks participating in cross-chain communication. Routing nodes forward data to the target blockchain network based on this information, thereby realizing cross-chain communication routing.

A connection request is initiated by a user or a blockchain network to establish a cross-chain communication request. It contains the communication protocol information of the blockchain network participating in the cross-chain communication and the communication address and port information of at least one blockchain node. The BaaS platform establishes cross-chain communication routing based on the information of the connection request.

Routing information indicates the blockchain network information that currently implements communication routing via routing nodes, including the type of blockchain network, communication protocol, participant information, etc. Blockchain nodes and routing nodes determine whether to allow mutual communication and how to forward data based on routing information.

The BaaS platform determines whether to support communication routing between these blockchain networks based on the set of communication protocols that it supports for communication routing and the communication protocol information of the blockchain network provided by the user. If not supported, cross-chain communication cannot be established.

Permission information indicates whether a routing node is allowed to be reused by multiple blockchain networks. For example, a routing node is currently connected to blockchain networks A and B. If both A and B allow the routing node to be reused by other networks, then the new blockchain network C can join in to achieve cross-chain communication between A, B, and C. Permission information can effectively avoid unwanted cross-chain communication and improve security.

The routing list is a list of routing nodes and their corresponding blockchain network information on the BaaS platform. It contains the routing information, communication address, port information, and permission information of each routing node. The BaaS platform manages and maintains cross-chain communication routes through the routing list.

When the BaaS platform receives a new cross-chain communication connection request, it will first query the routing list to determine whether there is a routing node that can be reused. If it exists and the permission information allows reuse, the information of the new blockchain network is directly registered to the routing node to achieve reuse. Routing node reuse can save resources and improve efficiency.

Transaction requests correspond to transaction operations across multiple blockchain networks, such as cross-chain transfers and cross-chain contract calls. When a user initiates a cross-chain transaction, the transaction request will be forwarded to the target blockchain network through the routing node, and the transaction operation will be completed.

A release request is initiated by a user or a blockchain network to end the cross-chain communication. When cross-chain communication is no longer needed, the BaaS platform will receive the release request and deregister the information of the blockchain network that ends the cross-chain communication from the routing node, and update the routing list at the same time.

Paper topic (only the topic is provided, no answer is provided)

Discuss the advantages and challenges of cross-chain communication technology in detail, and explore its development prospects in different application scenarios.

Compare and contrast different cross-chain communication implementation schemes, analyze their advantages and disadvantages and applicable scenarios.

Discuss the role and function of the BaaS platform in cross-chain communication, and look forward to its future development trend.

Analyze the impact of cross-chain communication technology on the security and privacy of blockchain, and propose corresponding solutions.

Combined with specific application cases, explain how cross-chain communication technology promotes the application and development of blockchain technology.

Key Glossary

Term Definition Blockchain as a Service (BaaS) provides a platform for enterprise users to quickly deploy and manage blockchain network services. Cross-chain communication is a technology that enables information and value exchange between different blockchain networks. Routing nodes are functional nodes that connect different blockchain networks and implement cross-chain communication routing. Communication protocols are rules followed by data exchange between blockchain networks. Connection requests are initiated by users or blockchain networks and are used to establish cross-chain communication requests. Routing information indicates the blockchain network information that currently implements communication routing via routing nodes. Permission information indicates whether routing nodes are allowed to be reused by multiple blockchain networks. Routing list is a list of routing nodes and their corresponding blockchain network information on the BaaS platform. Transaction requests correspond to requests for transaction operations across multiple blockchain networks. Release requests are initiated by users or blockchain networks and are used to end cross-chain communication requests.