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.
'UNI COIN describes itself as a cryptocurrency that is issued for the purpose of protecting investors. This is done in cooperation among different crypto issuers, by joint market-making and supporting the value of each token. Issuers adopting UNI COIN can save costs and diversify risks by combining everything together; exchanges, wallets, the payment system, and IR.'