Chainlink

Chainlink is a decentralized oracle network launched in 2017 by Sergey Nazarov and his team. Its goal is to connect smart contracts with off-chain data and services, enabling automated execution of contract conditions. The native token LINK is used to pay for services and incentivize oracle nodes to provide accurate data. Chainlink plays a crucial role in the DeFi ecosystem and blockchain applications and is supported by many major projects and exchanges.