Cross-Blockchain Data Processing Study Guide

Glossary

Term DefinitionsBlockchain is a decentralized distributed database technology characterized by decentralization, openness, transparency, immutability, and trustworthiness. Cross-chain refers to the data intercommunication and interaction between different blockchain systems. Relay chain is a technology for cross-chain communication, which transmits and verifies data between different blockchains through an independent blockchain network. Validator is responsible for verifying the source and authenticity of cross-chain data and confirming cross-chain transactions under the consensus mechanism. Proof of Stake (POS) is a consensus algorithm that determines the accounting rights of a node based on the amount of stake it holds. Trusted Execution Environment (TEE) is a secure area provided in a hardware device to ensure that sensitive data is stored, processed, and protected in an isolated, trusted environment. Intel Software Guard Extension (Intel SGX) is a processor technology developed by Intel that provides a trusted execution environment called Enclave to protect applications and data from malware attacks. Attestation is an authentication mechanism used to remotely verify whether a program and its results are credible. Simplified Payment Verification (SPV) is a lightweight client verification method that only needs to store block header data to verify the validity of a transaction. SPV clients use lightweight clients with simple payment verification methods, with small storage space and fast verification speed. Short answer questions

What are the limitations of existing cross-chain technologies?

Answer: Existing cross-chain technologies, such as relay chains, have throughput bottlenecks because cross-chain data must pass the consensus of the relay chain, and the throughput of the consensus algorithm is limited. In addition, when the blockchain verifies the data on the relay chain, it needs to verify multiple signatures, and the execution efficiency is low.

What role does TEE play in cross-blockchain data processing?

Answer: TEE provides a trusted execution environment that can ensure that cross-chain data is verified and signed in a secure and isolated environment, preventing data from being tampered with, thereby improving the security and reliability of cross-chain data interaction.

How does the cross-chain data processing method mentioned in this invention improve the cross-chain data throughput?

Answer: The present invention uses a light client (such as an SPV client) in TEE to verify the target blockchain data, and uses the private key in TEE to sign the verification result, avoiding the bottleneck of the traditional relay chain consensus process, thereby improving the cross-chain data throughput.

Briefly describe the basic process of cross-chain data processing in the present invention.

Answer: The first blockchain sends a cross-chain data request to the trust prover; the trust prover obtains the cross-chain data of the target blockchain and verifies it; after the verification is passed, the trust prover uses the TEE private key to sign the data and returns the result to the first blockchain; the first blockchain verifies the signature to confirm the source and authenticity of the data.

What role does Intel SGX play in the present invention?

Answer: As a TEE technology, Intel SGX can provide an Enclave trusted execution environment, protect the code and data security in the cross-chain data processing process, and ensure the reliability of the verification and signing process.

How is SPV applied in the present invention?

Answer: The trust prover can use the SPV light client to verify the data on the target blockchain. SPV only needs to store the block header data, so it can quickly and efficiently complete the data verification without downloading the complete blockchain data.

What are the advantages of the cross-chain data processing method mentioned in the present invention?

Answer: The present invention can more efficiently realize data authentication between blockchains, with better scalability and high efficiency, and can be applied to more blockchain application scenarios, such as multi-chain interaction, cross-chain DeFi, etc.

Compared with the traditional POS consensus relay, what are the advantages of the solution proposed in the present invention?

Answer: The present invention avoids the throughput bottleneck of the traditional POS consensus relay and the efficiency problem of multi-signature verification, and can realize cross-chain data processing more quickly and efficiently, and has higher scalability.

What application scenarios are suitable for the cross-chain data processing method proposed in the present invention?

Answer: The present invention is suitable for various scenarios that require cross-chain data interaction, such as cross-chain asset transfer, cross-chain identity authentication, cross-chain data sharing, etc.

In the future, what are the development directions of the cross-chain data processing solution proposed in the present invention?

Answer: In the future, we can continue to optimize the performance and security of TEE, support more blockchain platforms, and explore the combination with other cross-chain technologies to build a more complete cross-chain ecosystem.

Essay question

Detailedly explain the role of TEE in cross-chain data processing, and analyze how it improves the security and reliability of cross-chain data interaction.

Compare and analyze the advantages and disadvantages of the present invention and traditional cross-chain technology, and explore its feasibility and challenges in practical applications.

Explain the application principle of SPV in the present invention, and analyze its impact on cross-chain data processing efficiency.

Explore the development prospects of the present invention in future cross-blockchain applications, and analyze its impact on the development of blockchain technology.

Design a specific application scenario to explain how to use the present invention to achieve cross-blockchain data interaction and business logic processing.