Cross-blockchain interaction system

Glossary

Term Definition Cross-blockchain interaction The process of exchanging data and communicating between different blockchain networks. Anchor device A device connected to the source blockchain network, responsible for monitoring and delivering cross-blockchain requests. Relay device A device connected to the target blockchain network, responsible for receiving cross-blockchain requests, obtaining data and blockchain proofs, verifying data, generating relay proofs and returning the results to the source blockchain. Blockchain proof Information generated by the target blockchain network to prove the validity of the data. Relay proof The proof generated by the relay device to prove its verification results of the target blockchain data. Trusted proof conversion technology The technology used by the relay device to convert the blockchain proof into the relay proof, such as TEE, POA, MPC, ZKP, etc. Trust root Information pre-recorded on the blockchain to verify the validity of the relay proof. Private anchor device Anchor device that is only used by a specific source blockchain network to protect data privacy. Public anchor device Anchor device that can be used by multiple source blockchain networks. Private relay device Relay device that is only used by a specific target blockchain network to protect data privacy. Public relay device Relay device that can be used by multiple target blockchain networks. A bridge device is a device that connects anchor devices and relay devices, used to bridge different types of nodes. SPV (Simplified Payment Verification) simplifies payment verification, a lightweight blockchain client verification method.

Short answer question

What is the role of the cross-blockchain interaction system?

The role of the cross-blockchain interaction system is to realize data exchange and communication between different blockchain networks, break the blockchain data island, and improve the interoperability of blockchain applications.

Please briefly describe the basic process of cross-blockchain interaction.

The source blockchain network initiates a cross-blockchain request; the anchor device monitors the request and passes it to the relay device; the relay device initiates a request to the target blockchain network and receives data and blockchain proof; the relay device verifies the data and generates a relay proof; the relay device returns the data and relay proof to the anchor device; the anchor device returns the result to the source blockchain network.

What is the difference between an anchor device and a relay device?

The anchor device is connected to the source blockchain network and is responsible for monitoring and transmitting cross-blockchain requests; the relay device is connected to the target blockchain network and is responsible for receiving requests, obtaining data and blockchain proofs, verifying data, generating relay proofs and returning the results to the source blockchain.

What are blockchain proofs and relay proofs?

Blockchain proof is information generated by the target blockchain network to prove the validity of data; relay proof is proof generated by the relay device to prove its verification result of the target blockchain data.

What are the types of trusted proof conversion technology?

Trusted proof conversion technologies include TEE, POA, MPC, ZKP, etc.

What is the role of the root of trust?

The root of trust is used to verify the validity of the relay proof and ensure the reliability of the relay device.

What is the difference between a private anchor device and a public anchor device?

Private anchor devices are only used by specific source blockchain networks to protect data privacy; public anchor devices can be used by multiple source blockchain networks.

What is the difference between a private relay device and a public relay device?

Private relay devices are only used by specific target blockchain networks to protect data privacy; public relay devices can be used by multiple target blockchain networks.

What is the role of a bridge device?

The bridge device connects the anchor device and the relay device, and is used to bridge different types of nodes, such as connecting a private anchor device and a public relay device.

What is the role of SPV?

SPV is a lightweight blockchain client verification method that can reduce the burden on anchor devices and relay devices and improve the efficiency of cross-blockchain interactions.

Essay questions

Please elaborate on the design goals and implementation principles of the cross-blockchain interaction system, and compare its advantages and disadvantages with traditional solutions.

Please analyze the characteristics and applicable scenarios of different trusted proof conversion technologies, and discuss their impact on the performance and security of cross-blockchain interaction systems.

Please explore the application scenarios and configuration methods of private anchor devices, public anchor devices, private relay devices, public relay devices, and bridge devices, as well as how to choose the appropriate node type according to actual needs.

Please look forward to the future development trend of cross-blockchain interaction technology and analyze its impact on the development and application of blockchain technology.

Please analyze the application value and challenges of cross-blockchain interaction technology based on specific cases, and explore how to promote the implementation of cross-blockchain interaction technology.