$LINK
Chainlink is a decentralized oracle network that connects smart contracts on blockchains (mainly Ethereum) with real-world data, such as prices, weather information, or external events.
It acts as a bridge between the blockchain world and external systems, allowing smart contracts to securely and reliably access off-chain information.
It was founded in 2014 by Sergey Nazarov and Steve Ellis, with an ICO in 2017 that raised 32 million dollars.