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.
Dusk Network is a high throughput permissionless blockchain aimed at providing privacy, programmability and auditability. Dusk Network is currently in the Testnet phase and is a blockchain protocol for easy deployment of programmable zero-knowledge dApps, thus becoming the backbone of an open, permissionless and global privacy-oriented dApp ecosystem. Dusk Network aims to remove technical barriers that have undermined mainstream issuance and trading of security tokens. Compliance, auditability and privacy are built into the open, permissionless Confidential Security Token-standard (XSC).