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.
'Silverway provides aggregated and structured OTC (over-the-counter) data for crypto markets The ecosystem includes hundreds of professional investors, brokers, exchanges and projects as well as thousands of large and retail investors, and could potentially be opened up to far more accredited market participants The platform has been created by a team of former investment bankers and private equity professionals who have been amongst the pioneer professional investors in the crypto and blockchain sector'