Chainlink (LINK) — the oracle network and its token

Chainlink in plain words

A smart contract is a program inside a blockchain that carries out a rule written into it on its own, something like "if this event happens, make this transfer." Picture flight-delay insurance with the rule "if the flight is delayed by more than two hours, refund the passenger." Programs like this are covered in more detail in smart contract.

The trouble is that the program itself never goes online, so it has no way of learning about the delay. It needs someone to look at the departures board and report that the flight is late. A go-between like this, standing between the blockchain and the outside world, is called an oracle, and Chainlink is a whole network of many such go-betweens.

The go-betweens don't work for free, and they are paid in LINK tokens. Some participants put up LINK as a deposit, and if the network runs with failures through their fault, they lose part of it³. Chainlink is the network and the service, while LINK is its token, so there is no need to mix them up (what is a token).

This is worth knowing even if you never plan to buy LINK. When you swap one cryptocurrency for another or take out a loan in a crypto app, the price there often comes from Chainlink. If a wrong price comes through, the app may sell your collateral by mistake or give you less than you are owed.

How Chainlink works

Why Chainlink asks many participants at once

Back to the insurance example. Say a single person tells the program about the flight delay. That person might make an honest mistake, mix up the flight number or take money to send a false report. The insurance would then pay the wrong person or pay nobody at all, and that transfer can't be undone on the blockchain.

To prevent this, Chainlink asks many independent participants at once. These are computers run by different companies, and they are called network nodes. Each one checks its own source, whether that is the airport's website, the airline's website or a separate flight-tracking service. If six report "delayed" and one reports "departed on time," the program goes with the majority.

Prices work the same way. Seven participants send roughly the same price, an eighth names a figure ten times higher, and its answer is simply thrown out, with no effect on the final price. This lowers the risk of error, although it never drops to zero.

What else Chainlink does besides prices

Prices are only one of the network's jobs. Here is what else it can do, in simple examples:

• It reports prices, so a lending app knows the rate and can tell whether your collateral is still enough to keep the loan from being closed early.
• It moves cryptocurrency from one blockchain to another, much like a bank transfer between countries.
• It provides fair random numbers, so in an online game or a prize draw nobody, not even the game's creator, can fix the winner in advance.
• It runs actions on a schedule, for example an app that sends a payment by itself every month, like an automatic bank payment.
• It checks that what was promised really exists: if a company has issued tokens "backed by gold," it confirms that the gold really is in the vault.

Where Chainlink is used today

• The lending app Aave takes its prices from Chainlink, and when cryptocurrency gets cheaper, the app uses that price to see whether a borrower's collateral is still enough.
• Since 2024 the network has confirmed that every token of COPW, a stablecoin pegged to the Colombian peso from Wenia, a company in the Bancolombia banking group, is backed by pesos held in reserve⁴⁵.
• Since 2025 the US Department of Commerce has published official GDP and inflation statistics on the blockchain, and Chainlink delivers them to about ten networks at once⁶.

Big banks are trying Chainlink too, but so far these are trials, with no finished services. Even where Chainlink is used, its work is often paid for in other cryptocurrency. That is why demand for the network itself and demand for its token are two different things.

What LINK is for

• Participants are paid for their work in LINK when an app orders data from the network. Since 2025 the network automatically converts part of its fees into LINK even when they were paid in other cryptocurrency, much as a card terminal abroad converts your currency for you⁷.
• To be trusted, participants lock LINK up as a deposit. It works like a security deposit on a rented apartment, which you pay to earn trust and lose if you damage something.
• LINK gives no share in a company, no dividends and no vote on the network's rules, so it is not a stock.

What LINK staking is

• Staking means you put your LINK into the network's shared pot and earn a reward for it. While the tokens are in the pot, you can't sell them.
• If you have simply put your LINK into staking, as of 20.10.2026 you will not lose them. Only those who run network nodes are penalized, and only for a long outage³⁸.
• The pot has a fixed size, and once it is full, no new tokens are accepted⁹. You also can't take your LINK out instantly; you have to wait, and the exact waiting time is on the page.
  where to check: chain.link/economics/staking
• It differs from staking on Ethereum in its purpose. On the Ethereum network a deposit backs a participant's work of checking the network's own records, while here it backs the network's promise to bring in reliable information from the outside world.

How LINK differs from ETH and USDT

To see where LINK fits, compare it with ETH, the coin of the Ethereum network used there to pay the fee, and with USDT, a stablecoin whose price usually stays around one dollar.

	LINK	ETH	USDT
Does it have its own separate network?	no	yes	no
Is its price pegged to the dollar?	no	no	yes
Is it needed to pay the network fee?	no	yes	no
Is it needed to pay for a specific service?	yes1	no	no
Can it be put up as a deposit (staked)?	yes2	yes	no
Does it give a stake in a company?	no	no	no

1. Some Chainlink services accept other cryptocurrency, and the network converts part of that revenue into LINK. ↩
2. Into a pot of limited size and under the network's rules. ↩

Pros and cons of LINK, ETH and USDT

You can read about ETH in Ethereum, about USDT in the USDT profile, and about stablecoins in general in what is a stablecoin.

Risks of LINK

• LINK is not pegged to the dollar, so its price jumps around: something worth a hundred units today may be worth sixty or a hundred and forty a month from now.
• The value of LINK rests on demand. It is like a store gift card, which is useful while the store is open and worth nothing if the store closes. If people stop using the network or pay in ways that bypass this token, LINK has less to rest on.
• Chainlink is not the only data provider for blockchains; there are other go-between networks, and if apps move to them, demand for LINK will fall.
• Mistakes still happen, and if wrong data gets through, apps and their users suffer, for example when someone's collateral is sold at too low a price (smart contract).

Where to check current data

Check the list of networks where LINK works and the staking terms on the project's website.

Look up the current price and trading volume on a crypto data aggregator.

More detail on how the oracle works, staking and examples

The LINK token is issued under the ERC-677 standard, a set of rules for tokens that is compatible with the widespread ERC-20 standard¹.

An oracle has two parts. Outside the blockchain work the nodes, computers run by independent companies. A node takes a value from its source and signs it, like a seal that shows who brought the answer and that nobody swapped it along the way. The nodes compare their answers and pick the middle one, called the median, so a single error at either edge does not affect the result. They sign the shared answer together and put it on the blockchain as one record, so the network doesn't have to be paid for each node's answer. A group of nodes like this is called a decentralized oracle network. The second part is a small program inside the blockchain that checks the signatures and records the result for apps. Prices are written to the blockchain in advance and updated when they change noticeably, while one-off data, such as a random number for a prize draw, is brought in when an app asks for it. The oracle also works in the other direction, for example telling a payment system that a condition has been met.

In the current version of staking (v0.2), only the node operators who supply the ETH-to-dollar price on the Ethereum network can lose their deposit. If that price stops updating for a long time, each of them loses 700 LINK³⁸. Since August 2025, part of what the network earns, including ordinary money from companies, goes toward buying LINK. These tokens are set aside in a special network reserve, with no plans to spend them for several years⁷.

A few more examples of the network at work:

• In May 2026 the exchange Kraken moved its "bitcoin token" kBTC to Chainlink's service for transfers between blockchains, called CCIP¹⁰.
• On the prediction platform Polymarket, some disputes about crypto prices are settled using Chainlink data¹¹¹².
• In May 2025 the bank JPMorgan, together with Chainlink and the company Ondo, ran a trial settlement for a tokenized fund across two different blockchains¹³. Trials have also been run with SWIFT, the system banks in different countries use to send each other payment orders.
• DTCC, a major US clearing organization, is building a collateral platform on Chainlink, with launch expected by the end of 2026¹⁴.
• In Kenya the Etherisc project, working with ACRE Africa on a grant from Chainlink, has insured small farmers' harvests since 2020, but it remains a one-off experiment and never became a mass service¹⁵.

Frequently asked questions