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.
THORChain is building a chain-agnostic bridging protocol that will allow trustless and secure value-transfer connections with most other chains (such as Bitcoin, Ethereum, Monero and all of Binance Chain). Users will be able to instantly swap any asset at fair market prices and deep liquidity. Token holders will be able to stake any asset and earn on liquidity fees. Projects will be able to access manipulation resistant price feeds and accept payments in any currencies, no matter the type or liquidity.