Chainlink (LINK) is a decentralized oracle network that connects blockchain-based smart contracts with real-world data and off-chain systems. It serves as a critical bridge between blockchains and the outside world, enabling smart contracts to interact with external APIs, data feeds, and payment systems in a secure and trust-minimized way.
Launched in 2017 and built on Ethereum, Chainlink has grown into one of the most widely integrated and adopted oracle solutions across the entire crypto industry. It is used by hundreds of decentralized applications, DeFi platforms, insurance products, gaming ecosystems, and even enterprises needing reliable data feeds on-chain. Its native token LINK can be bought on specialized exchanges and LINK can also be traded for using other cryptocurrencies.