Decentralised Oracles for the Next Generation Internet

Slides presented at NGI Forum 2021 - Software Ecosystems for Trust Management Workshop

Transcript

1. CLICK TO EDIT MASTER TITLE STYLE Click to add subtitle Location Date DECENTRALIZED ORACLES FOR THE NEXT GENERATION INTERNET Dr Anthony Simonet-Boulogne iExec Blockchain Tech NGI Forum May 18th 2021
2. | ONTOCHAIN.NGI.EU WHAT ARE ORACLES? Oracles link blockchain app to the outside world What’s the temperature in London? What’s the temperature in London? 21.4°C 21.4°C Capture Format, validate & broadcast Use
3. | ONTOCHAIN.NGI.EU WHY ARE ORACLES CRITICAL? A compromised oracle can have disastrous consequences
4. | ONTOCHAIN.NGI.EU DECENTRALIZING ORACLES Single data source/single relayer Oracle smart contract Off-chain relayer Off-chain relayer Off-chain relayer Data source Data source Data source Data source Data source Economic incentives, node selection… Trust
5. | ONTOCHAIN.NGI.EU DECENTRALIZING ORACLES Multiple data sources/single relayer Oracle smart contract Off-chain relayer Off-chain relayer Off-chain relayer Data source Data source Data source Data source Data source Off-chain aggregation… Trust
6. | ONTOCHAIN.NGI.EU DECENTRALIZING ORACLES Multiple relayers Oracle smart contract Off-chain relayer Off-chain relayer Off-chain relayer Data source Data source Data source Data source Data source On-chain aggregation… Trust
7. | ONTOCHAIN.NGI.EU TEE DECENTRALIZING ORACLES Trusted Execution Environments with iExec Oracle smart contract Off-chain relayer Off-chain relayer Off-chain relayer Data source Data source Data source Data source Data source Data signature, remote attestation… Trust
8. | ONTOCHAIN.NGI.EU ORACLE APPLICATIONS FOR THE NGI Complex data validation as a building block for many application o Machine Learning o Image/sound recognition o Crowdsensing o … Cat 0.6 Cat 0.7 Cat 0.9 GPU + TEE « This is a picture of a cat (confidence: 0.73) »
9. | ONTOCHAIN.NGI.EU ORACLE APPLICATIONS FOR THE NGI Privacy-preserving identity validation o Zero-Knowledge Proofs o Verifiable Credentials o Self-Sovereign Identities o … « The author of this tweet holds a PhD in astrophysics » TEE
10. CHECK US OUT http://iex.ec https://developers.iex.ec https://academy.iex.ec @iEx_ec Supporting complex, trusted and privacy-preserving decentralized applications.