Cross-chain data interaction method with non-invasive sidechain anchoring

Cross-chain data interaction method with non-invasive sidechain anchoring

Glossary

Sidechain: A blockchain that runs in parallel with the main blockchain and can interact with the main chain.

Anchoring: The process of recording data or transactions on the sidechain to the main chain to ensure data security and consistency.

Cross-chain Interaction: The process of exchanging and communicating data between different blockchains.

Subscribing Client: A client that wants to receive data from another blockchain.

Publishing Client: A client that wants to publish data on its blockchain to another blockchain.

Cross-chain Interaction End: An entity responsible for connecting subscribing clients and publishing clients and coordinating cross-chain data interactions.

Oracle Engine: A trusted third-party service that is responsible for reading data from one blockchain and publishing it on another blockchain.

Public Key: A key used to encrypt information that can be shared publicly.

Private Key: A key used to decrypt information that must be kept secret.

SPV (Simplified Payment Verification): Simplified Payment Verification, a method that allows lightweight clients to verify transactions without downloading the full blockchain.

Short Answer Question

What is sidechain anchoring and what role does it play in cross-chain interaction? Sidechain anchoring is the process of recording data or transactions on the sidechain to the main chain to ensure data security and consistency. In cross-chain interaction, sidechain anchoring can ensure that data interaction between different blockchains is safe and reliable.

How does the subscribing client obtain the public key of the Oracle engine? The subscribing client can obtain the public key of the Oracle engine in two ways: directly from the Oracle engine, or from the publishing client through the cross-chain interaction end.

What role does the Oracle engine play in cross-chain data interaction? The Oracle engine is responsible for reading data from the blockchain where the publishing client is located, signing the data with the private key, and then publishing the data and signature to the blockchain where the subscribing client is located, thereby realizing cross-chain data interaction.

How does the cross-chain interaction end handle the subscription request of the subscribing client? The cross-chain interaction end sends the subscription request to the publishing client and waits for the publishing client to return the data. Then, the cross-chain interaction end forwards the data to the subscribing client.

Why does cross-chain data interaction require the use of an Oracle engine? Since different blockchains cannot communicate directly, a trusted third-party service Oracle engine is needed to read and publish data to achieve cross-chain data interaction.

Briefly describe the role of SPV lightweight clients in cross-chain interaction. SPV lightweight clients can use the Merkle path and block header information provided by the Oracle engine to verify whether the transaction exists on the blockchain without downloading the complete blockchain data.

How to ensure data security during cross-chain data interaction? Cross-chain data interaction ensures data security through the private key signature of the Oracle engine and the public key verification of the subscription client to prevent data tampering.

What are the advantages of non-invasive sidechain anchoring? Non-invasive sidechain anchoring can achieve cross-chain data interaction without modifying the original blockchain code, reducing the difficulty of implementation and security risks.

Give examples to illustrate the application scenarios of cross-chain data interaction. The application scenarios of cross-chain data interaction include: cross-chain asset transfer, decentralized exchanges, cross-chain oracles, etc.

Briefly describe the future development trend of cross-chain data interaction. The future development trends of cross-chain data interaction include: improving interaction efficiency, enhancing security, and realizing more complex cross-chain applications.

Essay questions

Detail the implementation principle of non-invasive sidechain anchoring in cross-chain data interaction, and analyze its advantages and disadvantages.

Compare several common cross-chain technical solutions, such as hash locking, relay chain, side chain, etc., and analyze their applicable scenarios and advantages and disadvantages.

Discuss the challenges faced by cross-chain data interaction technology in practical applications, such as security, efficiency, scalability, etc., and propose corresponding solutions.

Explore the impact of cross-chain data interaction technology on the development of blockchain, such as promoting blockchain interoperability and promoting the implementation of blockchain applications.

Design a cross-chain application scenario based on non-invasive sidechain anchoring, such as a cross-chain decentralized exchange, and describe its architecture and process in detail.