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.
Using all the advantages of blockchain technology, Sessia presents a new way of communication between businesses and customers. We call it «social marketplace» - an ecosystem where brands can simply develop and apply effective promotional tools by sharing the purchases of their client with their Friends and followers. SESSIA’s team has developed a unique iOS and Android software that eliminates the technological debt issue of many companies in less than 10 minutes. It provides businesses with 6 Sessia products in one place.