Blockchain interaction system, device and method

Short answer question

What is cross-chain interaction?

What are the main advantages of the cross-chain interaction solution proposed in this patent?

In which blockchain are the subscription client and the publishing client located, and what are their functions?

What role does the message queue play in cross-chain interaction?

How does the subscription event work in cross-chain interaction?

How does the cross-chain interaction terminal ensure the reliability of the message?

Why is the "queue state" of the message queue crucial to the security of cross-chain interaction?

How does the solution proposed in this patent prevent attacks from malicious nodes?

Give an example of how the solution proposed in this patent is applied to cross-chain asset transfer scenarios.

What are the advantages of the solution proposed in this patent when processing cross-chain transactions?

Short answer question answer

Cross-chain interaction refers to the process of information and value transfer between different blockchains. It allows events or transactions triggered on one blockchain to have an impact on another blockchain, thereby achieving interoperability between different blockchain systems.

The cross-chain interaction solution proposed in this patent realizes efficient, secure and reliable information transmission, and can effectively prevent attacks from malicious nodes. Through the message queue and subscription event mechanism, asynchronous communication is realized, avoiding delays in cross-chain transactions.

The subscribing client is located in the first blockchain and is responsible for subscribing to specific events and receiving messages from the second blockchain; the publishing client is located in the second blockchain and is responsible for publishing messages that match the subscribed events.

The message queue is a data structure used by blockchain nodes to store and forward messages. The subscribing client receives messages from the publishing client through the message queue without directly interacting with the second blockchain.

The subscribing client registers the subscription event with the cross-chain interaction terminal, which listens to messages matching the subscription event on the second blockchain and forwards the message to the subscribing client.

The cross-chain interaction terminal ensures the reliability of messages through status query requests and message verification mechanisms. It periodically queries the status of the message queue and verifies whether the received message comes from a legitimate publishing client.

The "queue status" of the message queue contains the processing status information of each message in the message queue. The cross-chain interaction terminal can determine whether the message has been tampered with or forged by verifying the queue status, thereby ensuring the security of message delivery.

The solution proposed in this patent prevents attacks by malicious nodes through multi-node deployment and status query mechanism. Even if a cross-chain interaction terminal is attacked, other nodes can still work normally to ensure the reliability of the system.

Assume that user A owns asset A1 on blockchain 1 and asset A2 on blockchain 2; user B owns asset B1 on blockchain 1 and asset B2 on blockchain 2. User A can transfer asset A2 to user B's B2 account through the cross-chain interaction system, and user B transfers asset B1 to user A's A1 account to achieve cross-chain asset exchange.

The solution proposed in this patent can realize efficient, secure and reliable transaction processing between different blockchains. ** Through smart contracts and cross-chain message transmission mechanisms, the atomicity and consistency of transactions can be guaranteed, avoiding the delays and security risks of traditional cross-chain transaction methods.

Glossary

Blockchain: A distributed database that uses cryptographic technology to ensure data security and immutability.

Cross-chain interaction: The process of transferring information and value between different blockchains.

Subscription Client: Located in the first blockchain, responsible for subscribing to specific events and receiving messages from the second blockchain.

Publishing Client: Located in the second blockchain, responsible for publishing messages matching the subscribed events.

Cross-chain Interaction End: Responsible for transmitting messages between different blockchains and verifying the reliability of messages.

Message Queue: A data structure used by blockchain nodes to store and forward messages.

Subscription Event: A specific event or transaction type that a subscribing client wishes to receive.

Queue Status: Contains the processing status information of each message in the message queue, which is used to verify the integrity and reliability of the message.

Smart Contract: An automatically executed contract stored on the blockchain that can automatically execute transactions according to predefined rules.

Atomicity: The entire transaction is an indivisible unit, either all executed successfully or all failed and rolled back.

Consistency: After the transaction is executed, the data of all nodes remains consistent.

Essay Question

Detail the architecture and working principle of the cross-chain interaction solution proposed in this patent.

Compare the advantages and disadvantages of the solution proposed in this patent with other cross-chain interaction solutions.

Explore the challenges and risks that the solution proposed in this patent may face in practical applications.

Analyze the impact of the solution proposed in this patent on the development of blockchain technology.

Looking forward to the future development trend of cross-chain interaction technology.