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.
NeoWorld is a multiplayer sandbox game running on the blockchain and a 3D virtual world created by users all over the globe. In NeoWorld, users can build land, create and experience third-party content or applications on the territory and even gain wealth.NeoWorld Cash (NASH) is the only currency in NeoWorld. Based on both ERC223 and ERC20 protocol, NASH has a total supply of 100 billion.