Smart contracts on Ethereum are fully self contained and any information or access to off-chain data is restricted. Tellor solves this problem by creating a system where parties can request the value of an off-chain data point (e.g. ETH/USD) and miners compete to add this value to an on-chain data bank, accessible by all Ethereum smart contracts. Inputs to a data series are secured by a network of staked miners. The main Tellor smart contract creates a time series of each requested data series and aims to become the standard source of high value data for decentralized applications. This oracle, “Tellor”, utilizes similar incentive mechanisms to other cryptocurrency systems through the issuance of Tellor’s token, Tributes, that are used to request a particular data series from miners.
Prometeus Network is a secure and decentralized ecosystem designed to solve real-world problems in data brokerage, created for the Influencer Marketing, Medical and Insurance data market industries. Prometeus Network is developed by Prometeus Labs. A company existing out of data scientists and entrepreneurs who have been working for more than 15 years on machine learning, business development and marketing.