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.
Ink is a decentralised solution harnessing the combined power of Consortium Blockchain, Public Blockchain and Cross-chain Interoperability for the global Creative Industry. The vision of Ink is to provide Sovereign Consortium Blockchain to different use cases, to redefine roles, content and behaviours within the industry, and to build for the Creative Industry a decentralised infrastructure in which various applications can be created and correlate to each other under one highly integrated system. Based on a credible and stable public blockchain, an Intellectual Property Asset Exchange is built as a trusted corridor for content-to-liquid-asset conversion and token issuance, making it an integrated ecosystem. Furthermore, defining and developing the cross-chain protocol enables value and information to flow freely between public blockchain and consortium blockchain.