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.
Origo Network aims to feature privacy as one of the main drivers of adopting decentralized applications (dApps). Nowhere is the need for privacy more paramount than in the collection of identity and behavior data. What is Origo? A scalable privacy preserving platform for decentralized applications. Origo token is the fuel to operate privacy preserving features on Origo network. A privacy preserving protocol that supports complete privacy protection for not only transactions but also smart contracts Origo Features - Origo Privacy Preserving Protocol - complete privacy preserving technology for smart contract input and output backed by Zero Knowledge Proof - Tailored Scalability Design for Privacy - Sharding + Stateless Client + Origo Consensus (enhanced PoS: a game theory based reward-punishment protocol)