Data verification based on time-based start logic in blockchain

Data verification based on time-based start logic in blockchain

Term definitionBlockchain is a data structure that links data blocks in chronological order, using cryptographic methods to ensure the immutability and anti-counterfeiting of distributed ledgers. Smart contracts are deployed on blockchains and are executable code contracts triggered by transactions. Chaincodes are codes that define the rules and logic of blockchain networks and are included in blockchain nodes. Time start logic is defined in chaincodes and is used to determine the start time of the target smart contract and start the logic of the contract. Target smart contract blockchain nodes actively start smart contracts at a specific time point, and their code defines the scheduled tasks that need to be completed. Blockchain nodes are node devices that join the blockchain network and run chaincodes. Trusted Execution Environment (TEE) is a hardware-isolated execution environment based on CPU security extensions to ensure code and data security. Intel Software Guard Extensions (SGX) is a TEE technology that blockchain nodes can use to create secure enclaves to execute transactions. Privacy computing nodes are nodes deployed outside the blockchain network and are responsible for executing computing tasks that require privacy protection. Remote attestation is a process used to prove that privacy computing nodes are trustworthy, such as by verifying remote attestation reports issued by authoritative organizations. Distributed Digital Identity (DID) is a blockchain-based identity management solution for creating, verifying and managing identities. Decentralized Identity Service (DIS) is a blockchain system that provides DID creation, verification and management functions. Verifiable Claim (VC) is a DID application issued by a trusted institution to prove the authenticity of specific information.

Short Answer Question

What role does time start logic play in blockchain data verification?

Answer: Time start logic defines the start time of the target smart contract and instructs the blockchain node to actively execute the contract at a specific time point without relying on external transaction triggers.

What function does the target smart contract assume in blockchain data verification?

Answer: The target smart contract contains the logic code for data verification, and the blockchain node executes the contract to complete the verification of user data, such as KYC verification.

What role does the chain code play in determining the target smart contract?

Answer: The chain code can record the information of the target smart contract, such as the contract address or the specific blockchain account address that stores the contract information. The blockchain node determines the target contract by running the chain code.

How to use TEE in blockchain data verification?

A: Blockchain nodes can use TEE technology to create secure enclaves for executing smart contracts and protecting sensitive data, such as user identity information.

What role do privacy computing nodes play in blockchain data verification?

A: Privacy computing nodes can be deployed outside the blockchain network and are responsible for performing computing tasks that require privacy protection, such as decrypting user data or executing complex logic.

What role does remote authentication play in ensuring the trustworthiness of privacy computing nodes?

A: Privacy computing nodes can prove their trustworthiness through remote authentication, such as providing a remote authentication report issued by an authority to prove the legitimacy of their operating environment and code.

How is distributed digital identity (DID) applied in blockchain data verification?

A: DID can be used to identify the parties involved in data verification, such as data providers, verifiers, and privacy computing nodes, to ensure the credibility of data sources and verification results.

What role does verifiable claim (VC) play in blockchain data verification?

A: VC can be used to prove the results of data verification, such as VC issued by a privacy computing node to prove that user data has been verified, enhancing the credibility of the verification results.

What are the advantages of time-start logic compared to traditional smart contract triggering methods?

Answer: Time-start logic allows blockchain nodes to actively execute smart contracts without relying on external transaction triggers, which improves data verification efficiency and simplifies user operations.

In practical applications, what scenarios can blockchain data verification be applied to?

Answer: Blockchain data verification can be applied to scenarios that require timed data verification, such as KYC verification, supply chain traceability, IoT data security, etc.