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.
JEWEL (JWL) is a non – government-controlled digital currency that allows you to send money anywhere in the world instantly, securely and virtually free of charge. Moreover, the JWL aims to empower people to achieve financial independence by making each JWL coin an interest-bearing asset with a high annual interest rate. This state-of-the-art financial instrument can serve as a great way to preserve the value that is supported by network protocols, infrastructure, and services.