Chainlink (LINK) is a decentralized oracle network that allows blockchains to securely interact with external data, events and payments, providing reliable and trustworthy data for smart contracts. Designed to eliminate the problem of off-chain data validity, Chainlink integrates oracle nodes that collect and validate data from various sources to ensure its accuracy and security. The LINK token is used to pay for the services of oracles on the network and stimulate their work. The platform provides enhanced functionality and security for smart contracts, making them more useful for real-world applications in various industries such as finance, insurance and logistics.