Chainlink (LINK)
Fact sheet · reviewed October 26, 2026
Chainlink is a network that feeds real-world data, such as prices, into smart contracts, a service called an "oracle." Its token, LINK, pays the network's node operators. LINK is a token on Ethereum and other chains, not a blockchain of its own.
Key facts
| Launched | 2017 (token sale); main network 2019 |
|---|---|
| Created by | Sergey Nazarov and Steve Ellis |
| Type | Token on Ethereum and other blockchains |
| Maximum supply | 1 billion LINK |
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What it's used for
Price feeds that lending and trading apps rely on, plus tools for moving data and tokens between blockchains.
Risks to know
- LINK's value depends on demand for Chainlink's services and the token's role in them.
- Price is volatile.
Buying and storing it
If you decide to buy, use a regulated exchange you reach directly, check fees with the true cost calculator, and store long-term holdings in a wallet you control. Read how to buy crypto safely. This page isn't a recommendation to buy.
Questions
What is a blockchain oracle?
A service that brings outside information, like the price of ETH in dollars, onto a blockchain so smart contracts can use it.
Where to next
Sources
Facts checked against the sources listed, as of October 26, 2026. Educational only; not financial advice.