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.
'Solve.Care is a healthcare IT company that builds blockchain platforms which the team believes may improve the way healthcare is delivered and managed. The Solve.Care platform reportedly uses blockchain technology as the underlying distributed ledger for coordinating care, benefits and payments between all parties in the chain of healthcare: patients, doctors, pharmacies, laboratories, employers, insurers, and others. SOLVE tokens may be used to secure efficient and transparent healthcare administration around the world. The token supply is fixed and the price variable, as determined by market supply and demand. SOLVE token runs natively on the Ethereum blockchain and is designed to follow the ERC20 token standard. SOLVE utility tokens are the currency used for transactions on the platform. According to the foundation, they can be utilized to pay for Care Administration Network fees, establish Care.Wallets, purchase Care.Cards, and participate in Care.Marketplace services as well as pay for associated integration fees. In addition, SOLVE is reportedly used for the emission of Care.Coins and payments requiring Care.Coins.'