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.
Insight Chain, a decentralized research ecosystem chain based on blockchain, will focus on data ecosystem on the blockchain domain firstly, works on building Wall Street-like financial order in the blockchain domain. It integrates companies, media, analyst and investor with blockchain technology, co-constructs a decentralized platform integrating information sharing, review & index, data trading and interaction based on research to promote the upgrade and healthy development of the blockchain industry.