Chainlink is designed to address a specific problem that most people outside the blockchain industry have never heard of: the oracle problem. Smart contracts on blockchains like Ethereum can execute complex logic, but they cannot natively access data from the 'real world'. These lines of code cannot check a stock price, verify a weather reading, or confirm that a payment was made in the traditional banking system. Chainlink provides the infrastructure that connects these smart contracts to real-world data, APIs, and off-chain computation.
Launched in 2017 by Sergey Nazarov and Steve Ellis, Chainlink has become a prominent decentralised oracle solution, securing data feeds used by hundreds of DeFi protocols across multiple blockchain networks. The current LINK/AUD exchange rate is displayed live on this page. In Australia, individuals can purchase Chainlink using AUD through PayID transfers on AUSTRAC-registered platforms like Swyftx.
How Chainlink works
Chainlink operates as a network of independent node operators who are paid in LINK tokens to retrieve, validate, and deliver data to smart contracts. When a DeFi protocol needs the current price of ETH/USD to execute a liquidation or calculate a loan-to-value ratio, it queries a Chainlink price feed. Multiple independent nodes fetch the data from different sources, aggregate it, and deliver a single verified answer to the smart contract.
This is not a niche function. A significant portion of total value locked across DeFi depends on Chainlink price feeds to operate correctly. If those feeds failed or were compromised, the cascading effect on lending, trading, and derivatives protocols would likely be substantial.
More recently, Chainlink launched the Cross-Chain Interoperability Protocol (CCIP), which extends its role from data delivery into secure cross-chain messaging and token transfers across blockchain networks.
What drives LINK's price?
DeFi integration depth
Chainlink's value is linked to the number of protocols that rely on its oracle feeds and how much value those protocols secure. Growth in DeFi total value locked (TVL), new protocol integrations, and the expansion of CCIP usage can all potentially impact demand for LINK.
Supply structure
LINK has a fixed maximum supply of 1 billion tokens. Distribution includes node operator rewards, ecosystem grants, and a team vesting schedule. The rate of new circulating supply depends on usage patterns and scheduled releases.
Macro environment
As a globally traded asset, LINK is sensitive to DeFi sector sentiment, broader cryptocurrency market movements, and macroeconomic conditions that affect risk appetite for infrastructure-layer assets.
Want to learn more about Chainlink and other altcoins? Head to our guide to our deep dive on Chainlink, available on Swyftx Learn.