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.
CRON is a CRYPTOCEAN project token. CRYPTOCEAN is a blockchain based ecosystem that combines financial and technological services for working with crypto-currencies, digital financial assets, and traditional fiat money. You can purchase cryptocurrencies with your bank card/account, get your fiat inside the service and legally transfer it to a card or a bank account. You can also order from them a classic plastic card (crypto card), issued together with their partner banks. It will enable you to deposit and withdraw cash from your financial and crypto accounts in regular ATMs using CRYPTOCEAN services and also pay for purchases – goods and services – with cryptocurrency, as if you were paying with a usual bank card. All the processes of exchanging cryptocurrencies on exchanges, transferring funds from exchanges to your personal account, maintaining the limits you set, will be automatic. You can also pay for goods and services without a crypto card either via our mobile application using a mobile phone with an NFC chip or directly through an online store that has switched CRYPTOCEAN on as a payment system. They made a special crypto account service – a multi-currency crypto wallet for TOP-100 cryptocurrencies. CRYPTOCEAN intend to provide the opportunity to work with the maximum possible number of cryptocurrencies.