Chainlink was created as a solution to a problem of connecting smart contracts with the real-world. These contracts are only able to work inside of a blockchain as decentralized scripts, which makes it impossible to connect and exchange the information with external sources. Chainlink works as a middleman between blockchain and the real-world. Creator of this project is Sergey Nazarov - connected with blockchain technology since 2011. He believes that blockchain can change our lives.
LINK is a utility token created in ERC677 standard. It possesses all functionalities of ERC20, and its main task is to pay node operators for retrieving smart contracts data. LINK token cannot be mined. LINK total supply is 1 000 000 000 LINK, and circulating supply equals 350 000 000 LINK. Market capitalization on 31st of July 2019 is 768 052 328 USD.