Chainlink is a decentralized platform that was created in 2017 and has been built on Ethereum. It’s intended to connect smart contracts to the outside world. For instance, you and your farmer friend, Jim, decided to bet on the weather. Jim’s crops may get washed away if it rains, so he makes an agreement (“smart contract”) that you’ll pay $100 if it’s going to rain tomorrow. Now, if Jim’s crops get ruined from the rain tomorrow, Chainlink will verify that it rained online and make sure Jim gets his $100!