Chainlink expands the capability of smart contracts by enabling access to real-world data and systems without sacrificing the security and reliability guarantees inherent to blockchain technology.

Chainlink connects smart contracts on any blockchain to data providers, web APIs, enterprise systems, cloud services, IoT devices, payment systems, other blockchains, and much more.

Blockchains are highly secure and reliable networks for value exchange but lack the functionality to natively fetch external data or send data to off-chain systems in a manner that retains end-to-end tamper-resistance.