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.
DIGIX DAO TOKENS. Our vision for the future is a world operating on Smart Contracts. Indeed, we think this vision will become a reality very soon. In this world, a stable store of value is needed - that's why we created DGX. In order to ensure the success of DGX, we also conceived DGD; a stake in a 'Distributed Autonomous Organisation' that rewards DGD holders based on DGX's success. By participating in the DAO and working on its behalf in curating proposals, you get rewarded based on the usage of DGX in the Ethereum ecosystem. DGD holders use their tokens to decide on proposals, and determine the best way forward for Digix.