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.
DATA (Decentralized AI-powered Trust Alliance) is a blockchain based digital data authentication protocol powered by AI & P2P mobile storage infrastructure. DTA is used as blockchain reward to incentivize user data onto the chain and apply AI based model to determine the device level reputation, cyber attention rewards and perform data fraud detection at the same time. DATA is partnered with Yomob International Co. Ltd., a unified mobile ad global monetization platform with 120M monthly user reach and 2000+ mobile developers.