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.
Niobium is a Ethereum ERC20 token created in partnership between brazilian an austrian entrepreneurs. Niobium Coin will boost all the services that will be provided in the platform of the Digital Business Exchange of São Paulo (BOMESP). With BOMESP, any company can have its own currency or can operate in the world of virtual currencies in parity with the Bitcoin, Ethereum, Ripple and the Niobium Coin itself. The principal services provided by the BOMESP are charged by means of Niobiums, which ensures the maximum valuation and the use of the currency, as well as extremely low percentages in order to enable its users to carry out millions of transactions per second on its platform.