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.
Bottos is a decentralized data sharing network based on the Blockchain technology. It is also a consensus-based one-stop platform to implement the registration, distribution and transformation of the data among different participants within our broad-based AI ecosystem. Bottos’ vision is to build and become the largest global data sharing network to evolve the AI ecosystem via smart data contracts and data mining on a Blockchain infrastructure and to help people capitalize the data assets with clear ownership and better control in data privacy through a transparent and democratic mechanism.