Tellor (TRB) is a decentralized oracle network built on the Ethereum blockchain. It is designed to provide reliable and accurate off-chain data for decentralized applications (dApps) and smart contracts. The network relies on a network of miners who compete to provide accurate data in exchange for rewards.

Tellor's main purpose is to provide a decentralized source of information for dApps and smart contracts that need access to real-world data. For example, a smart contract that is designed to execute based on the price of a particular commodity may need access to up-to-date price data from a trusted source. By relying on a decentralized oracle network like Tellor, the smart contract can access this data in a trustless and decentralized manner.

The Tellor network works by having miners compete to provide accurate data for specific data requests made by dApps and smart contracts. Miners submit solutions to a specific data request, and the solution that is chosen by the network is rewarded with TRB tokens. The chosen solution is then stored on the blockchain, making it immutable and easily accessible to any dApp or smart contract that needs it.

One of the key features of Tellor is its use of a unique mining algorithm called Proof-of-Work (PoW) that is specifically designed for oracles. This algorithm ensures that miners are incentivized to provide accurate data and are not able to manipulate the network by submitting false or inaccurate information.

Tellor also offers a range of features and tools designed to make it easy for developers to integrate its oracle network into their dApps and smart contracts. These include a developer API, documentation, and a range of pre-built oracle contracts that can be used as building blocks for more complex applications.

Overall, Tellor is a promising project that aims to solve a key problem in the world of decentralized applications and smart contracts. By providing a reliable and decentralized source of off-chain data, it has the potential to unlock new use cases and applications for blockchain technology.