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.
GBC, Game Bank Coin in short, is the token issued by I.H.C platform in accordance with ERC20 standard. The cryptocurrency is used for ads auction and other transactions on I.H.C platform. GBC can be traded freely after the pre-sale and will be listed on serval digital currency exchange within the shortest time. The total supply amount of GBC is 3 billion and will never be issued additionally. The subscription is open to early investors in order to raise money for the platform development. Besides, GBC can also act as incentive for the contributors of I.H.C ecosystem. GBC will also be circulated on the third party digital currency exchanges.