Chainlink raised $32 million in a 2017 token sale. Here is how its oracle network grew to secure $84 billion in cross-chain value
Chainlink's origin traces to September 2017, when founders Sergey Nazarov and Steve Ellis completed a $32 million sale of LINK tokens to fund a decentralized oracle network
Nine years later, that network supplies price data and cross-chain messaging to decentralized finance (DeFi) apps, stablecoin issuers and financial institutions. Chainlink says its Cross-Chain Interoperability Protocol (CCIP) has secured more than $84 billion in cross-chain token value
Blockchains cannot read information from outside their own network. A smart contract, which is a program that runs on a blockchain, cannot check a stock price or an interest rate by itself. This gap is called the oracle problem. An oracle is a service that carries outside data onto a blockchain
Using one oracle creates a single point of failure. If that one source is wrong or is tampered with, every contract that depends on it acts on bad data. In a lending app, a wrong price can trigger liquidations that should not have happened
Chainlink's answer was to avoid relying on a single source. A group of independent node operators each fetch the data, and their results are combined into one value for the contract
Chainlink grew out of an earlier company. Nazarov and Ellis co-founded SmartContract(.)com in September 2014 to connect smart contracts to outside data and payments. Nazarov graduated from New York University in 2007 with a degree in philosophy and management, and worked at venture firm FirstMark Capital before moving into crypto
The pair published the Chainlink white paper on September 4, 2017, with Ari Juels, a computer science professor at Cornell Tech. The paper described a network of independent oracles in place of a single data provider
Juels's research fed into the project later as well. In 2018, Chainlink integrated Town Crier, an oracle system he worked on that relies on trusted hardware. In 2020, it acquired DECO, a Cornell project that uses zero-knowledge proofs. A zero-knowledge proof lets someone prove a fact is true without revealing the underlying data, such as a birth date
The sale ran in two stages, according to CoinCodex. A presale opened on July 21, 2017, and a public sale followed on September 19 and 20. Most of the money came from the presale
At $12.88, LINK trades at more than 100 times its public sale price
Article continues...How Does The Chainlink Network Work?A smart contract asks for a piece of data, such as the price of ether in dollars. Several independent node operators fetch that data. The network combines their answers into a single value and delivers it to the contract. No single operator decides the result
Staking arrived in stages. Version 0.1 went live in December 2022 with a cap of 25 million LINK. Version 0.2 launched on November 28, 2023, and raised the cap to 45 million LINK
The mainnet, the live version of the network, launched on Ethereum on May 30, 2019. DeFi lending and trading apps became its first large group of users. Aave, a lending protocol, has used Chainlink for more than six years
Banks and market infrastructure firms came later. The steps below show how that happened
The first quarter brought regulatory and market changes, according to Chainlink's quarterly review
Chainlink has made four announcements since late September
Chainlink said more than $15 billion in token value moved to CCIP in the four months before the 2.0 launch. That includes BitGo's WBTC, Coinbase's cbBTC, Kraken's kBTC and Wyoming's FRNT stable token. Open Standard also named Chainlink an official data oracle for its Open USD stablecoin, Coin Edition reported
Chainlink launched the Chainlink Reserve on August 7, 2025. It is a smart contract on Ethereum that holds LINK. A system called Payment Abstraction lets customers pay in stablecoins or other tokens, then converts those payments into LINK
Chainlink said at the time that demand had created "hundreds of millions of dollars in revenue," mostly from large enterprises paying offchain. It also said it did not expect withdrawals from the reserve for multiple years
The reserve held 3.06 million LINK at the end of the first quarter. By early October it held about 6.12 million LINK, worth close to $88.8 million, The Crypto Times reported. That is under 1% of circulating supply
Gopal Solanky of The Crypto Times noted on October 2 that many CCIP transfers carry flat fees of under two dollars, so a large secured value does not mean large revenue. LINK holders also have no contractual claim on fees
Other oracle networks include Pyth Network, RedStone and Chronicle. Pyth uses a pull model, where an app requests a price only when it needs one. Chainlink's original feeds use a push model, where oracles post updates onchain on a regular basis. Chainlink's Data Streams product also uses a pull model
Chainlink turned a $32 million token sale into a network that delivers price data, verifies reserves and moves tokens between blockchains. DeFi apps and stablecoin issuers use it, Swift has piloted it, and DTCC took part in its Fulcrum demonstration. LINK is classified as a digital commodity in the U.S. and has futures on CME. At $12.88, it remains well below its 2021 peak
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Disclaimer: The views expressed in this article do not necessarily represent the views of BSCN. The information provided in this article is for educational and entertainment purposes only and should not be construed as investment advice, or advice of any kind. BSCN assumes no responsibility for any investment decisions made based on the information provided in this article. If you believe that the article should be amended, please reach out to the BSCN team by emailing [email protected]
Soumen has been a crypto researcher since 2020 and holds a master’s in Physics. His writing and research has been published by publications such as CryptoSlate and DailyCoin, as well as BSCN. His areas of focus include Bitcoin, DeFi, and high-potential altcoins like Ethereum, Solana, XRP, and Chainlink. He combines analytical depth with journalistic clarity to deliver insights for both newcomers and seasoned crypto readers
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