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.
Insolar is a global technology company building public and private blockchain solutions on the Insolar Blockchain Platform, which is a reportedly secure, flexible, and scalable blockchain for business. Insolar Blockchain Platform is a solution which streamlines interactions between companies. The platform’s key features, as described by the team, are unlimited scalability, security, simplified development, interoperability, user protection, and regulatory compliance. The Insolar team consists of 70 people (of which 45 are engineers and researchers) in 5 countries, including the US and Switzerland. The team utilizes the knowledge of engineers and industry veterans to help organizations explore blockchain use cases and tackle technological, operational, and strategic risks.