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.
Contentos is a decentralized global content ecosystem invested by Binance Labs (the blockchain incubator of world’s largest exchange, https://labs.binance.com), DHVC and various class-leading funds. Contentos TestNet was launched and its real-time network status can be viewed on Contentos Block Explorer (https://explorer.contentos.io). It aims to create a decentralized content ecosystem, where assets can be freely produced, authenticated, and distributed. The team consists of experts from the content industry, who have worked on top-tier consumer applications and blockchain projects. Contentos is not only a blueprint for what digital content ecosystem might look like in the future but we have multiple working use cases: Contentos is working with strategic partners, LiveMe and Cheetah Mobile, that have amassed over 60+ million monthly active users. With real-time user feedback, Contentos will become a premier blockchain project as it places the interest of users first.