This document describes a service that provides consensus-based external data to decentralized systems from multiple independent oracles and a reviewer. A team of engineers and data scientists propose using a human oracle contract on a blockchain to source data from several oracles on non-blockchain topics like exchange rates, weather, and geolocation. The oracles submit answers which are reviewed and finalized on-chain if a consensus is reached, with oracle reputations updated accordingly. This could enable use cases like prediction markets, collective decision making, and event result verification.

1. A service to provide consensus-based external data to any
decentralized system

2. Team
Onur BAŞ
Mechanical Engineer, PhD.
Professor at TED University
Kerem DENK
Aerospace Engineer, MsC.
İnan Utku
TÜRKMEN
Mathematician, PhD
Cansu HÜRSES
Data Scientist
Taha Eren
SARNIÇ
Data Scientist

3. Consensus-based
€
£
$
Exchange
rates
Weather
Geolocation
Oracle problem

4. Human oracle
Question
Oracle 1
Oracle 2
Oracle 3
Reviewer Finalize
Reject
Reputation update

5. Off-chain

6. On-Chain

7. Human Oracle
Contract
Conventional
Betting
Agricultural
Insurance
Collective
Decision
Making
Prediction
Market
Answer
Match score?
Result
Drought?
Frost?
Flood?
Result
Voting?
Use cases
Result
Event result?

8. Human oracle
Thank you...