Chainlink

Chainlink is a decentralized oracle network that enables smart contracts to securely access off-chain data feeds, web APIs, and traditional bank payments. It acts as a bridge between blockchains and external data sources, allowing smart contracts to interact with real-world information. Founded in 2017 by Sergey Nazarov and Steve Ellis, Chainlink launched on the Ethereum mainnet in May 2019 and has since become the industry-standard oracle solution used by the majority of decentralized finance (DeFi) protocols. The network operates through a decentralized set of node operators that aggregate and deliver off-chain data to on-chain smart contracts, securing over $75 billion in total value across 1,000+ integrations on 25+ blockchains. Chainlink's services include Data Feeds, Verifiable Random Function (VRF), and Cross-Chain Interoperability Protocol (CCIP), among others. The native token, LINK, is used for paying for services and as a component of the security cryptoeconomic protocol. Chainlink has been recognized by leading independent research firms and featured in major publications such as MIT Technology Review, Forbes, and Coindesk. The company is headquartered in the Cayman Islands.