A TEE-based decentralized oracle system and method of transferring external data in the oracle system

摘要

The present invention relates to a decentralized oracle system based on a trusted execution environment. In the decentralized oracle system, a plurality of oracle nodes are configured in a private blockchain network to provide data from an external data source according to a request from an external blockchain network. The oracle node includes: a transaction processing device that performs a transaction requested by an external blockchain network in a trusted execution environment (TEE); A consensus engine module that randomly selects a leader oracle node according to the PoET consensus algorithm; When elected as a leader oracle node, a block management module configured to generate blocks at regular intervals as a validator and distribute blocks by connecting to the block chain; is configured so that the leader oracle node selected from among the oracle nodes according to the PoET consensus algorithm can operate as a verifier node.