Independent guide · Checked October 2026

What is Chainlink, and what is LINK?

Chainlink is the network that lets blockchains see the outside world and talk to each other. LINK is the token that pays for it and secures it. This is a complete, plain-English guide: how it works, who built it, who uses it, what could go wrong, and how to hold LINK safely.

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Did you know?

SmartContract.com, the company that became Chainlink Labs, was founded in September 2014 — almost a year before Ethereum itself went live.

01Market2 min read

LINK right now

Live figures from CoinGecko, refreshed every two minutes. Prices tell you what people are paying today, not what something is worth, so treat this as context rather than a signal.

Connecting to CoinGecko…

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Chainlink (LINK) in US dollars · 24h — · 7d —

7-day price chart appears here when live data loads.

Market cap

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Rank —

24h volume

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across exchanges

Circulating

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of 1B maximum

All-time high

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May 2021

Network figures worth knowing

These are not prices. They describe how much the network is used, and most come from Chainlink itself or from DefiLlama, so note the dates.

Total value secured

$110B

Q2 2026 review, 24 Jul 2026

Transaction value enabled

$30T+

cumulative, passed 30 Apr 2026

Oracle market share

~70%

by value secured, DefiLlama, 2025

CCIP quarterly volume

$4.9B

Q2 2026, up 353% on the year

Chainlink Reserve

~6.05M

LINK, early Oct 2026

Staking pool cap

45M

LINK, staking v0.2

What do "value secured" and "value enabled" actually mean?Deep dive

Total value secured (TVS) adds up the money sitting in applications that rely on an oracle. If a lending market holding $10 billion uses Chainlink prices to decide who gets liquidated, that $10 billion counts. It is a measure of how much is at stake if the oracle fails, and it rises and falls with crypto prices.

Transaction value enabled (TVE) is a running total of the value of transactions that used Chainlink services since 2022. It only ever goes up, and one dollar can be counted many times as it moves through trades. It shows activity, not revenue: $30 trillion of enabled value does not mean $30 trillion, or anything close, was paid to the network.

Neither number tells you what LINK should be worth. They are best used for comparing oracle providers on the same yardstick.

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02Start here2 min read

Chainlink in 60 seconds

If you read only one section, read this one.

The problem

Blockchains are blind

A smart contract is a program on a blockchain. It can move money automatically, but it cannot see anything outside its own chain: not a share price, not the weather, not a bank balance, not even another blockchain. Something has to tell it. That something is called an oracle.

The idea

Do not trust one messenger

If a single company supplied the data, the contract would only be as honest as that company. Chainlink instead uses many independent operators who each fetch the answer, compare notes and publish a result that no single one of them controls.

The network

More than price feeds

Chainlink began with prices for DeFi. It now also moves tokens between blockchains (CCIP), runs multi-step workflows for banks (CRE), proves reserves, generates fair randomness and enforces compliance rules. Its 2026 pitch is to be the connecting layer between traditional finance and blockchains.

The token

What LINK is for

LINK is the network's token. Node operators are paid in it, stakers lock it up as a security deposit, and revenue paid in other currencies is converted into it. Supply is fixed at 1 billion. It runs on Ethereum and fits in any Ethereum wallet.

An everyday comparison. Think of a smart contract as a vending machine: put the right thing in and it reliably does its job. But it sits in a windowless room. Chainlink is the group of independent couriers who bring in information from outside and carry instructions out again, checking each other's work so that one dishonest courier cannot fool the machine.

Five facts to remember

Who: started by Sergey Nazarov and Steve Ellis; white paper written with Ari Juels in 2017; developed mainly by Chainlink Labs.
When: live on Ethereum since 30 May 2019.
How big: the largest oracle provider, with about $110 billion in value secured as of mid-2026.
Who uses it: Aave, Lido and most large DeFi protocols; and, in pilots or production, institutions including Swift, DTCC, UBS, J.P. Morgan and Fidelity International.
Main debates: how much control Chainlink Labs retains, and how much of the network's commercial success flows through to LINK holders.

Finished? Tick it off with "Mark read" above.Next: Origins →

03History4 min read

Where Chainlink came from

The idea of a smart contract is older than Bitcoin. The idea that such a contract needs a trustworthy window onto the world is what Chainlink was built around.

Before Chainlink: SmartContract.com (2014)

In September 2014 Sergey Nazarov and Steve Ellis founded a company called SmartContract.com. Ethereum had not launched yet. Their product let people write simple agreements that would trigger on outside events, such as a payment arriving or a price being reached, and they quickly ran into the central difficulty: the contract was only as reliable as the single service feeding it information.

The pair had worked on related ideas before. Through his small venture fund, QED Capital, Nazarov had launched Secure Asset Exchange, a decentralised exchange project, and CryptaMail, a blockchain-based email service. Ellis, a software engineer, built much of the early technology.

A bank experiment

SmartContract.com's early work with Swift, the messaging network that connects the world's banks, shaped everything that followed. The team built a proof of concept in which a smart contract calculated and triggered a bond interest payment using outside rate data and Swift messages. It showed that large institutions were interested, and that they would never accept a single start-up as the sole source of truth. Nearly a decade later, Swift is still Chainlink's most important relationship.

The 2017 white paper

The answer was to decentralise the oracle itself. On 4 September 2017 Ellis, Nazarov and Ari Juels, a professor at Cornell Tech and one of the most respected academic cryptographers working on blockchains, published "ChainLink: A Decentralized Oracle Network". It described three ideas that still define the system:

Many nodes, many sources. Independent operators each query several data sources, so neither a single node nor a single website is a point of failure.
Onchain aggregation. A contract collects the answers and computes one result, discarding outliers.
Incentives. Operators are paid in a token for good service and, eventually, put up deposits they lose for bad service.

The token sale

Later that month the company sold 350 million LINK, 35% of a fixed one-billion supply, and raised about $32 million. By the standards of 2017, when projects routinely raised hundreds of millions, it was a modest round. The remaining tokens were split between a pool for node operators (35%) and the company (30%).

Quiet years, then mainnet (2018–2019)

Chainlink spent 2018 building while much of the industry was marketing. It absorbed Town Crier, a Cornell project that used secure hardware to fetch web data. On 30 May 2019 the network went live on Ethereum. Within a year, the decentralised-finance boom arrived, and almost every lending and derivatives protocol needed exactly what Chainlink sold: a price it could trust.

From price feeds to "platform" (2020–2026)

Each phase since has widened the scope. 2020 brought verifiable randomness and Proof of Reserve. The 2021 "Chainlink 2.0" white paper recast oracle networks as general-purpose offchain computers. Staking arrived in 2022. CCIP, in 2023, took Chainlink into cross-chain transfers. And from 2024 onward the focus shifted decisively toward banks, asset managers and market infrastructure, culminating in the Chainlink Runtime Environment (2025) and the Swift ledger connection and CCIP 2.0 (2026).

Who first thought of oracles and smart contracts?Deep dive

The computer scientist Nick Szabo described "smart contracts" in the 1990s, using the vending machine as his example. Bitcoin (2009) proved that a network of strangers could agree on a ledger. Ethereum (2015) made that ledger programmable. But all three left the data question open.

Early Ethereum applications used home-made oracles: often just a server run by the project's own team. Several were manipulated or failed. Research groups, notably the Initiative for CryptoCurrencies and Contracts (IC3) that Juels co-directs, worked on hardware-based and cryptographic approaches. Chainlink's contribution was less a single invention than a practical combination: redundancy, aggregation and economic incentives, packaged so that developers could simply read a number from a contract.

Why is it called "Chainlink", and why "LINK Marines"?Culture

The name describes the job: a link between chains and the outside world, and later between chains themselves. The token ticker followed.

Chainlink also has one of crypto's most persistent online communities. Supporters on message boards in 2017 and 2018 began calling themselves "LINK Marines", producing a stream of memes while the price sat under a dollar. The enthusiasm is part of the project's history, and also a reason to read community claims about partnerships with care.

Finished? Tick it off with "Mark read" above.Next: Timeline →

042014 to today7 min read

A filterable timeline

49 key moments, including the uncomfortable ones. Filter by theme to follow a single thread.

49 events shown

2014
Sep 2014
SmartContract.com is founded
Sergey Nazarov and Steve Ellis start a company to connect smart contracts to bank payments, data and other outside systems. It is the direct ancestor of Chainlink Labs.
2017
Jun 2017
Chainlink is announced
The team proposes replacing its single, centralised oracle service with a decentralised network of independent nodes.
4 Sep 2017
The white paper
"ChainLink: A Decentralized Oracle Network" is published by Steve Ellis, Ari Juels (Cornell Tech) and Sergey Nazarov.
Sep 2017
Token sale raises $32 million
350 million LINK, 35% of the fixed one-billion supply, is sold. The rest is set aside for node operators (35%) and the company (30%).
2018
Nov 2018
Town Crier joins
Chainlink brings in Town Crier, a Cornell research project (co-created by Juels) that uses secure hardware to fetch web data for smart contracts.
2019
30 May 2019
Mainnet launch on Ethereum
The network goes live. Early price feeds begin serving the first DeFi protocols.
Jul 2019
First team token sales noticed
On-chain analysts at Glassnode document 700,000-LINK transfers from a team wallet, most of which appear to reach Binance. The pattern of periodic treasury sales continues to this day.
2020
2020
VRF and Proof of Reserve
Verifiable randomness and reserve attestations launch, extending Chainlink beyond price data.
2020
DECO acquired from Cornell
DECO lets someone prove a fact about data from a website (for example, "my balance is above X") without revealing the data itself.
Aug–Sep 2020
Node spam attack
An attacker floods several node operators with requests, costing them a reported 700 ETH or so in gas. Feeds keep running; operators tighten their request filtering.
2021
Feb 2021
Off-Chain Reporting (OCR)
Nodes begin agreeing on answers offchain and submitting one signed report, cutting gas costs sharply and allowing bigger networks.
15 Apr 2021
Chainlink 2.0 white paper
A much longer paper sets out "decentralised oracle networks" that do computation, not just data delivery, plus staking.
May 2021
All-time high near $53
LINK peaks at roughly $53 during the 2021 bull market.
Dec 2021
Eric Schmidt becomes an adviser
The former Google chief executive joins Chainlink Labs as a strategic adviser.
2022
12 May 2022
The LUNA circuit breaker
As LUNA collapses, a built-in minimum price on the LUNA/USD feed is hit and the feed stops tracking the market. Lenders Venus (about $11M) and Blizz Finance (about $8.3M) are drained by users depositing near-worthless LUNA at the stale price.
2022
Economics 2.0, Build and Scale
Chainlink sets out a plan for staking, the Build programme (projects commit tokens in return for support) and Scale (blockchains subsidise oracle costs).
Dec 2022
Staking v0.1
A first, capped staking pool of 25 million LINK opens, securing the ETH/USD feed on Ethereum.
2023
Jul 2023
CCIP reaches mainnet
The Cross-Chain Interoperability Protocol goes live for early users. General availability follows in 2024.
Aug 2023
Swift publishes its CCIP experiments
Swift reports that it moved tokenised value across public and private chains with more than a dozen institutions, using CCIP as the connecting layer.
24 Sep 2023
Multisig controversy
A signer is quietly removed from a Chainlink multisig. Researcher Chris Blec argues the multisig could alter any price feed. Chainlink calls it routine signer rotation.
Oct 2023
Data Streams
A low-latency, pull-based data product launches for derivatives exchanges that need sub-second prices.
28 Nov 2023
Staking v0.2
The pool grows to 45 million LINK with an unbonding period, slashing for node operators and a modular design.
2024
May 2024
DTCC Smart NAV pilot
The US post-trade giant reports on a pilot that put fund net-asset-value data onchain using CCIP, with major banks and asset managers taking part.
Nov 2024
Swift, UBS and Chainlink in Singapore
Under the Monetary Authority of Singapore's Project Guardian, the three show tokenised fund subscriptions and redemptions settling over Swift.
Dec 2024
Smart Value Recapture (SVR)
A new feed type lets lending protocols recapture profit from liquidations that would otherwise go to block builders.
2025
Mar 2025
White House Crypto Summit
Sergey Nazarov is among the industry figures invited to the first White House crypto summit.
May 2025
CCIP reaches Solana
CCIP expands to its first non-EVM chain, followed later in the year by Aptos.
Jun 2025
Mastercard partnership
Mastercard and Chainlink announce a route for cardholders to buy crypto directly onchain.
7 Aug 2025
The Chainlink Reserve
An onchain reserve begins accumulating LINK bought with revenue from enterprise deals and network fees.
Aug 2025
ICE and the US government
Intercontinental Exchange brings FX and precious-metals data onchain via Chainlink, and the US Department of Commerce starts publishing GDP and PCE data through Data Feeds.
Sep 2025
Sibos 2025
Swift and UBS trigger tokenised-fund subscriptions with ordinary ISO 20022 messages. Phase 2 of a corporate-actions project involves 24 institutions including DTCC and Euroclear. Total value secured passes $100 billion during the quarter.
31 Oct 2025
Brazil–Hong Kong pilot
The two central banks test cross-border trade settlement, with Chainlink connecting Brazil's Drex to Hong Kong's Ensemble platform.
4–5 Nov 2025
SmartCon: CRE and Confidential Compute
The Chainlink Runtime Environment goes live as an all-in-one orchestration layer; Confidential Compute is announced. Rewards Season 1 opens to stakers.
2 Dec 2025
First US LINK ETF
Grayscale converts its Chainlink trust into an exchange-traded product, ticker GLNK.
2026
14 Jan 2026
Bitwise launches CLNK
A second US spot LINK fund begins trading on NYSE Arca with a 0.34% fee.
Feb 2026
CME futures and a CFTC seat
CME Group lists LINK futures on 9 February. Nazarov is named to the CFTC's Innovation Advisory Committee. During the quarter the SEC and CFTC issue a joint interpretation treating LINK as a digital commodity.
Early 2026
Moonwell misconfiguration
A governance proposal at lender Moonwell wires up a Chainlink-based price wrapper incorrectly, pricing cbETH at about $1.12 instead of roughly $2,200. About $1.78M in bad debt results. The underlying feeds were correct; the integration was not.
Q1 2026
Equities, Aave V4, Atlas
24/5 US equities streams go live; Aave V4 launches with Chainlink as its only oracle; Chainlink buys the Atlas order-flow auction protocol; the Bank of England picks Chainlink for its Synchronisation Lab; Deloitte completes a SOC 2 Type 2 examination of CCIP.
18 Apr 2026
The Kelp bridge exploit (not Chainlink)
About $292M in rsETH is drained from Kelp DAO's LayerZero-based bridge, which relied on a single verifier. On 5 May Kelp says it will move to CCIP. Over the quarter more than $7 billion in token value migrates to CCIP.
30 Apr 2026
$30 trillion in transaction value
Chainlink's cumulative "transaction value enabled" figure passes $30 trillion.
12 May 2026
DTCC Collateral AppChain
DTCC says it will build CRE and Chainlink data into its 24/7 collateral platform, targeting go-live in Q4 2026. On 15 July DTCC begins converting assets held at its depository into tokens used in production trades.
23 Jun 2026
Project Pangea
Chainlink and banking consortia representing more than 50 banks announce a framework for same-day (T+0) settlement of international FX.
20 Jun 2026
Quarterly release: 21M LINK
Four non-circulating wallets release 21 million LINK; on-chain trackers report about 18.4 million going to Binance and 2.6 million to the staking rewards multisig.
1 Jul 2026
Robinhood Chain
Robinhood's own blockchain launches with Chainlink as its data and cross-chain provider from day one.
24 Jul 2026
TVS at $110 billion
The Q2 review reports $110B total value secured and a Reserve of 4.5 million LINK.
Aug–Sep 2026
Coinbase and Wyoming
Coinbase selects Chainlink for its tokenised stocks. Wyoming's Stable Token Commission moves to CCIP and adopts Proof of Reserve for its state-issued stablecoin.
28 Sep 2026
CCIP 2.0 and the Swift ledger
At Sibos in Miami, Chainlink launches CCIP 2.0 with issuer-run verifiers and built-in compliance checks, and says institutions can connect to Swift's new blockchain ledger through CRE while keeping their own signing keys.
30 Sep 2026
Chainlink Fulcrum
An end-to-end product for repo and collateral management launches, combining CRE, CCIP and Data Streams.
Oct 2026
Reserve passes 6M; another release
The Reserve crosses roughly 6.05 million LINK. On 9 October a further 18.75 million LINK leaves the non-circulating wallets, taking circulating supply to about 767 million.

Finished? Tick it off with "Mark read" above.Next: How it works →

05Mechanics6 min read

How Chainlink works

No maths required. Three ideas carry most of the weight: ask many, take the middle, and make lying expensive.

1. The oracle problem

Blockchains stay secure by having thousands of computers re-run every transaction and check they all get the same result. That only works if the result never depends on something that might differ from one computer to the next. A website can return different answers a second apart, so blockchains simply forbid contracts from calling the internet.

The result is a sealed box. To get information in, somebody must write it onto the chain in a transaction. Whoever does that holds real power: if a lending contract believes ether is worth $1 instead of $3,000, every loan can be wrongly liquidated. The oracle problem is the question of how to bring in outside data without creating a single party everyone has to trust.

2. A decentralised oracle network

Chainlink's answer is a committee, called a decentralised oracle network or DON. For an important price feed it works like this:

Many sources
Professional data companies collect trades from dozens of exchanges and compute a volume-weighted market price, filtering out fake volume and outliers.
Many nodes
Each independent node operator subscribes to several of those data companies and forms its own view of the price.
Agreement offchain
Using a protocol called Off-Chain Reporting, the nodes exchange signed observations and produce one report containing the median. A supermajority must sign it.
One onchain update
The signed report is posted to a contract on the blockchain, which checks the signatures and stores the new price for any application to read.
Payment and reputation
Operators are paid for reports. Their performance is public, and persistent poor service gets them replaced. On staked feeds, they also risk losing LINK.

Try it: can a lying node move the price?

Interactive

Nine nodes report the price of an asset whose true market price is $14.82. Drag the slider to corrupt some of them.

Dishonest nodes: 0 of 9 They all report

Median (what Chainlink reports)

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Simple average (for comparison)

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The node outlined in teal supplied the median. Real feeds use more safeguards than this toy, including several data sources per node and a signature threshold.

3. When does a feed update?

Writing to a blockchain costs money, so feeds do not update on every tick. Each has two triggers: a deviation threshold (publish if the price has moved by more than, say, 0.5%) and a heartbeat (publish at least once every hour or day regardless). Applications are expected to check how fresh a price is before relying on it. Several of the incidents in the risks section come down to that check being skipped.

Try it: deviation and heartbeat

Interactive

An example feed with a 0.5% deviation threshold and a 60-minute heartbeat.

Price move since last update: 0.2% Time since last update: 20 min

4. Push and pull

The feeds above are push oracles: the network writes prices onchain and anyone can read them. They are simple and always available, but an hourly or 0.5% cadence is too slow for a derivatives exchange.

Data Streams is Chainlink's pull design. Nodes produce signed price reports several times a second and keep them offchain. When a trader acts, the application fetches the latest report and submits it in the same transaction, where a contract verifies the signatures. The data is as fresh as the trade itself. Rival Pyth Network popularised this approach; most oracle providers now offer both.

5. Crossing chains with CCIP

There are hundreds of blockchains, and they cannot see each other any more than they can see a stock exchange. Moving a token from one to another really means destroying or locking it in one place and creating or releasing it in another, on the strength of a message that says the first step happened. If that message can be forged, tokens are created from nothing. Bridge failures of this kind have cost billions of dollars since 2021.

CCIP applies the oracle-committee idea to that message, and then adds independent layers so that a single failure is not enough.

Try it: send a cross-chain transfer

Interactive

A simplified model of a CCIP token transfer. Choose a scenario and watch each stage.

From To Amount Scenario

1 · SourceTokens are locked or burned. The router emits a message.

2 · CommitAn oracle network attests to a batch of messages.

3 · VerifySeparate verifiers check it independently.

4 · ExecuteThe message is proven and run on the destination.

5 · DeliveredTokens are minted or released to the receiver.

Press "Send transfer" to begin.

What changed in CCIP 2.0?September 2026

Earlier versions of CCIP paired the main oracle networks with a separate Risk Management Network that could halt anything suspicious. CCIP 2.0, launched on 28 September 2026, generalises that into Cross-Chain Verifiers. A token issuer, such as a bank, can require that its own team or a third party it trusts also sign off every transfer, in addition to Chainlink's default committee (reported as 16 node operators).

It also connects directly to the Automated Compliance Engine, so eligibility checks and transfer limits apply before funds move, and lets issuers choose between waiting for full finality on the source chain or accepting faster, slightly riskier confirmation.

The timing was not accidental. In April 2026 about $292 million was taken from Kelp DAO's bridge, which ran on LayerZero with a single verifier. "One verifier must never be the only line of defence" became the theme of the year in cross-chain security.

What is the Chainlink Runtime Environment?Deep dive

By 2025 Chainlink had a dozen separate services, each with its own oracle networks. A bank that wanted to issue a tokenised fund had to stitch together price data, identity checks, cross-chain transfers and messages to its internal systems.

CRE is the layer that does the stitching. A developer writes a workflow: when this happens (a Swift message arrives, a price crosses a level, a timer fires), fetch that data, check these rules, then write to those chains. Each step is carried out by a decentralised network that reaches consensus on the result. Chainlink compares it to an operating system for onchain finance; a fair plain-English description is "a decentralised automation server".

A typical example is delivery versus payment. Chainlink, J.P. Morgan's Kinexys and Ondo used CRE in 2025 to swap a tokenised Treasury fund on one chain for a bank deposit token on another so that either both legs happened or neither did.

How does verifiable randomness work?Deep dive

A blockchain cannot roll dice: every computer must compute the same result, and anything derived from block data can be influenced by whoever produces the block. VRF solves this with a keypair. The oracle combines a secret key with a seed nobody could predict in advance and produces a random number plus a proof. The contract checks the proof against the oracle's public key before accepting the number. The oracle cannot choose the outcome; it can only decline to answer, and that is visible and penalised.

Curious about privacy technology that goes further than oracles? Our sister guides on Zcash and Midnight explain zero-knowledge proofs from the ground up.

Finished? Tick it off with "Mark read" above.Next: Products →

06The toolkit7 min read

Product-by-product explorer

Chainlink now describes itself as a platform of standards for data, interoperability, compliance and privacy. Here is each part and what it is for.

18 products shown

Data

Data Feeds

The original product: a shared, regularly updated reference price that any contract on that chain can read.

How it works and who uses it

A group of independent node operators each fetch a price from several professional data aggregators, agree on the median offchain, and post one signed report onchain. The feed updates when the price moves past a deviation threshold or a heartbeat timer runs out.

Used for: lending collateral, stablecoins, derivatives settlement.
Also carries: official US economic data (GDP, PCE) from the Bureau of Economic Analysis since 2025.
Model: "push" — the network pays the gas and the data is already there when you need it.

Data

Data Streams

Sub-second market data that an application pulls onchain only at the moment it needs it.

How it works and who uses it

Streams are signed reports delivered offchain at high frequency. A trading app grabs the latest report and verifies it onchain in the same transaction as the trade, which removes much of the room for front-running.

Used by: perpetuals exchanges such as GMX and Lighter, and Polymarket's short-duration markets.
2026 additions: 24/5 US equities and ETFs, FX, gold and silver, energy, and Japanese and Korean equities.

Data

SmartData and Proof of Reserve

Onchain facts about real-world assets: are the reserves there, and what is the fund worth?

How it works and who uses it

Proof of Reserve reports the collateral backing a token (a custodian's bitcoin, a stablecoin's bank balances) so contracts can check it automatically, and even refuse to mint if reserves fall short. NAVLink and SmartAUM publish fund net asset value and assets under management.

Adopters named in 2026: Wyoming's state stable token, Fidelity International's tokenised fund, Aave Horizon.
Limit to remember: a reserve feed is only as good as its source. If the data comes from the issuer itself, it is a disclosure, not an audit.

Data

DataLink

A publishing service that lets traditional data owners sell their feeds onchain without running blockchain infrastructure.

How it works and who uses it

Institutions with valuable data connect once and Chainlink distributes it across dozens of chains. Named publishers include Deutsche Börse, FTSE Russell, Tradeweb, SIX, SGX FX and Coinbase.

Data

SVR (Smart Value Recapture)

A price feed that auctions off the right to liquidate first, returning the proceeds to the lending protocol.

How it works and who uses it

When a price update makes a loan liquidatable, bots race to claim the bonus and block builders pocket most of the profit. SVR runs a private auction for that opportunity. By mid-2026 Chainlink reported more than $23 million recaptured, roughly $15M going to DeFi protocols and $8M to the Chainlink network, across $880M+ of liquidations.

Chainlink bought the Atlas order-flow auction protocol from FastLane Labs in early 2026 to extend SVR to more chains.

Interoperability

CCIP

The Cross-Chain Interoperability Protocol: move tokens and messages between blockchains.

How it works and who uses it

CCIP uses oracle networks to observe one chain, commit to what happened, and execute the result on another. It adds defence in depth: independent verification, per-token rate limits and the ability to pause.

Reach: more than 65 networks by late 2025, including Solana and Aptos.
Volume: $4.9B in Q2 2026, up 353% year on year.
CCIP 2.0 (Sept 2026): Cross-Chain Verifiers that issuers can run themselves, built-in compliance checks, and a choice between fast or fully-final confirmation.
Audit trail: SOC 2 Type 2 and ISO 27001 examinations by Deloitte.

Interoperability

Cross-Chain Token (CCT) standard

A recipe for making any token natively multi-chain while the issuer keeps control of the contracts.

How it works and who uses it

Rather than creating a "wrapped" copy owned by a bridge, the issuer deploys token pools and sets its own rate limits. Tokens are burned on one chain and minted on another, so supply stays constant. Examples include Lido's wstETH, Coinbase's cbBTC, Aave's GHO, Maple's syrupUSDC and, since May 2026, Kelp's rsETH.

Compute

Chainlink Runtime Environment (CRE)

An orchestration layer: write one workflow that reads data, calls APIs, checks compliance rules and writes to several chains.

How it works and who uses it

Launched at SmartCon in November 2025. Each step in a workflow is run by a decentralised oracle network and the results are agreed by consensus, so no single server is trusted. Developers write in TypeScript or Go.

Early uses: J.P. Morgan Kinexys and Ondo's cross-chain delivery-versus-payment test, Swift and UBS fund workflows, the Brazil–Hong Kong trade pilot.
2026: DTCC's Collateral AppChain, the Swift ledger connection, and prediction-market settlement all run on it. Functions and Automation are being folded in.

Compute

VRF

A verifiable random function: random numbers that come with a proof nobody tampered with them.

How it works and who uses it

Blockchains are deterministic, so fair randomness is surprisingly hard. VRF generates a number offchain plus a cryptographic proof that is checked onchain before the number can be used. Common in games, NFT mints, raffles and validator selection.

Compute

Automation

Reliable "wake-up calls" for smart contracts, which cannot run themselves.

How it works and who uses it

Formerly called Keepers. Nodes watch for a condition (a time, a price, a custom check) and send the transaction when it is met: harvesting yield, rebalancing a vault, settling a market. In 2026 this capability is being upgraded into CRE workflows.

Compute

Functions

Run a small piece of custom code across a decentralised network to fetch and process any web API.

How it works and who uses it

A serverless platform for the long tail of data that no ready-made feed covers. Like Automation, Functions is being absorbed into CRE, which does the same job with more building blocks.

Compliance and privacy

Automated Compliance Engine (ACE)

Rules such as "only verified investors may hold this token" enforced by code, across chains.

How it works and who uses it

ACE combines a policy manager with a reusable identity framework (Cross-Chain Identity, or CCID) that can reference credentials such as GLEIF's verifiable legal-entity identifiers. Private beta reached mainnet in Q2 2026. It was cited in June 2026 in a white paper from the Global Layer One initiative, whose contributors include the BIS Innovation Hub, IMF and MAS.

Compliance and privacy

Digital Transfer Agent (DTA) standard

A technical standard for running fund subscriptions, redemptions and record-keeping onchain within existing rules.

How it works and who uses it

UBS's uMINT tokenised money-market fund was the first to adopt it, and UBS completed an in-production, end-to-end tokenised fund workflow using it in late 2025 with DigiFT as distributor.

Compliance and privacy

Confidential Compute and the privacy standard

Keeping transaction details, business logic and data private while still settling on public or shared chains.

How it works and who uses it

Announced in November 2025, with early access planned for 2026 through CRE. It sits alongside CCIP Private Transactions (used by SBI Digital Markets) and the older DECO research. Banks rarely want positions and counterparties visible to competitors, so privacy is a precondition for much institutional activity.

Status at the time of writing: private workflows and "Confidential HTTP" were in early rollout during 2026; we could not confirm a general-availability date.

Compliance and privacy

Fulcrum

A packaged product for repo and collateral management across chains, launched 30 September 2026.

How it works and who uses it

Counterparties agree terms in one venue while cash and collateral settle on whichever networks they live on. It combines CRE (workflow), CCIP (movement) and Data Streams (valuation and haircuts). DTCC demonstrated a cross-chain securities-financing transaction with it at Sibos 2026.

Economics

Staking

LINK locked as a security deposit behind oracle services, earning rewards in LINK.

How it works and who uses it

The live version, v0.2, has a 45 million LINK pool. See the staking section for the full rules.

Economics

The Chainlink Reserve and Payment Abstraction

Customers pay in whatever they like; the system converts it to LINK and stores it onchain.

How it works and who uses it

Payment Abstraction accepts fees in stablecoins, gas tokens or fiat and swaps them for LINK on a decentralised exchange. The Reserve, launched 7 August 2025, holds the result in a timelocked contract. It held about 6.05 million LINK in early October 2026.

Economics

Build, Scale and Rewards

Programmes that tie projects and blockchains economically to the network and its stakers.

How it works and who uses it

Build gives young projects priority support in exchange for a share of their token supply — shifting in 2026 toward commercial agreements paid in LINK or liquid equivalents. Scale has blockchains cover oracle running costs on their networks. Rewards lets eligible stakers claim Build project tokens; Season 1 (late 2025) featured nine projects.

A word on naming. Chainlink renames and regroups products often: Keepers became Automation, Price Feeds became Data Feeds, and Functions and Automation are now being folded into CRE. If a term you have seen is missing here, try the glossary.

Finished? Tick it off with "Mark read" above.Next: Tokenomics →

07The LINK token4 min read

Tokenomics: supply, flows and the Reserve

One billion tokens, created once. The interesting questions are who holds the part that has not been released, and what brings LINK back out of the market.

Where the billion went in 2017

Where things stand in October 2026

Circulating: about 767M (76.7%)Non-circulating: about 233M (23.3%)

Circulating supply per DefiLlama and CoinGecko-style trackers after the 9 October 2026 release. Of the circulating amount, up to 45M sits in the staking pool and about 6M in the Reserve.

Outflow

The non-circulating wallets

The unsold 65% went to wallets controlled by the company. There is no published vesting schedule and no smart contract enforcing one. In practice, tokens leave in batches about once a quarter.

Two recent examples, both tracked on-chain: 21 million LINK on 20 June 2026, of which about 18.4M went to Binance and 2.6M to the multisig that funds staking rewards; and 18.75 million LINK on 9 October 2026. Tokens sent to an exchange are usually assumed to be sold or used for market-making, though a transfer is not proof of a sale.

Inflow

The Chainlink Reserve

Since 7 August 2025, revenue from enterprise contracts and onchain fees has been converted into LINK and locked in a contract on Ethereum with a multi-day timelock. Chainlink says it expects no withdrawals for several years.

Growth so far: 523,000 LINK at the end of Q3 2025, 3.06M at the end of Q1 2026, 4.5M at the end of Q2, and about 6.05M in early October 2026. You can check the balance yourself at reserve.chain.link.

Put the two side by side. In roughly fourteen months the Reserve absorbed about 6 million LINK. In the same period the non-circulating wallets released several times that. Both are true. Supporters point to the Reserve's accelerating pace; critics point to the size gap. The data is public and you can weigh it yourself.

What LINK is used for

Paying for services

Node operators are paid in LINK. Users may pay in other assets, which Payment Abstraction swaps to LINK on a decentralised exchange.

Staking

Node operators and community members lock LINK as a deposit backing service quality, and earn LINK rewards for doing so.

Collateral in DeFi

LINK is accepted as collateral on Aave and other lenders, and trades as futures on CME and in two US spot funds.

How does Payment Abstraction work, step by step?Deep dive

A customer pays for a Chainlink service in a stablecoin, a chain's gas token, or (for enterprises) ordinary money under a contract.
Onchain fees collected on many chains are consolidated to Ethereum using CCIP.
Chainlink Automation triggers a conversion; Price Feeds set the acceptable rate so the swap cannot be badly mispriced.
The assets are exchanged for LINK. Version 1 used Uniswap V3; version 2, audited in early 2026, adds a permissionless Dutch auction.
The LINK is routed to its destination: service providers, stakers or the Reserve. Half of the network's share of SVR fees was also redirected to the Reserve.

The offchain part depends on Chainlink Labs choosing to convert enterprise revenue. The company has said publicly that it does, and the Reserve's onchain balance is the visible evidence.

Why is LINK an "ERC-677" token?Technical

With a plain ERC-20 token, paying a contract takes two steps: approve, then call. ERC-677 adds a single function, transferAndCall, that sends tokens and notifies the receiving contract in one go. That let a user pay an oracle and make a request in one transaction. For holders the difference is invisible: every ERC-20 wallet and exchange handles LINK normally.

The LINK token contract on Ethereum is 0x514910771AF9Ca656af840dff83E8264EcF986CA. Always confirm an address against Chainlink's own documentation or Etherscan before using it; fake tokens with the same name are common.

Regulated ways to hold LINK exposureETFs and futures

Grayscale Chainlink Trust ETF (GLNK): began trading 2 December 2025; 0.35% fee; LINK held at Coinbase Custody. Assets were about $87.5 million in mid-January 2026.
Bitwise Chainlink ETF (CLNK): listed on NYSE Arca on 14 January 2026; 0.34% fee.
CME Group futures: launched 9 February 2026 in 5,000-LINK and 250-LINK "micro" sizes.
Kalshi listed LINK perpetual contracts in Q2 2026, described as a first for a CFTC-regulated US venue.

These products track the price. Holders do not own tokens, cannot stake them and pay an annual fee.

Finished? Tick it off with "Mark read" above.Next: People and organisations →

08Who is behind it4 min read

People and organisations

Chainlink is an open network, but a small number of people and one company have shaped almost all of it. Knowing who they are helps you judge both its strengths and its dependencies.

The founders and chief scientist

Sergey Nazarov

Co-founder · CEO, Chainlink Labs

The public face and strategist of the project since 2014. He has a full profile below.

Steve Ellis

Co-founder · CTO

A software engineer who co-founded SmartContract.com with Nazarov in 2014 and co-wrote the 2017 white paper. Ellis led the building of the original node software and core contracts. He keeps a much lower public profile than his co-founder and rarely gives interviews.

Ari Juels

Chief scientist · Professor, Cornell Tech

One of the best-known academic cryptographers in the field. With Markus Jakobsson he wrote the 1999 paper that coined the term "proof of work"; he was previously chief scientist at RSA; and he co-directs IC3, the leading university blockchain research group. He co-wrote both Chainlink white papers and co-created Town Crier and DECO. He has also published a thriller, The Oracle (2024), about a rogue smart contract.

Eric Schmidt

Strategic adviser since December 2021

Google's chief executive from 2001 to 2011 and later executive chairman. His appointment was widely read as a signal of Chainlink Labs' ambitions beyond crypto-native users. Advisers lend experience and contacts; they do not run the company.

Chainlink Labs leadership and notable staff

Chainlink Labs is a private company and does not publish a full organisation chart. The roles below are as described in public announcements or event programmes; people move, so treat titles as "at the time of the cited event".

Apurva Joshi

Chief product officer (SmartCon, Nov 2025)

Delivered the product keynote at SmartCon 2025, where the Chainlink Runtime Environment went live.

Andrew McCormick

Head of institutional and market development (from June 2026)

Joined from eToro, where he ran the US business, after fourteen years as a securities litigator and regulatory counsel at firms including Morgan Stanley. A newly created role focused on US banks, market infrastructure and asset managers.

Johann Eid

Senior business leader

A long-serving executive on the commercial side who has given keynotes at SmartCon on adoption and go-to-market. Often described as chief business officer.

Kemal El Moujahid

Product leadership (joined 2022)

Joined as chief product officer in 2022 from Google, where he was product lead for the TensorFlow machine-learning platform.

Ryan Lovell and William Riley

Capital markets team

Represented Chainlink Labs on Sibos 2026 panels about payments resilience and corporate actions, the latter alongside DTCC and Brown Brothers Harriman.

Other advisers and researchers

Past and present

Publicly named advisers over the years have included former LinkedIn chief executive Jeff Weiner and DocuSign co-founder Tom Gonser. The research group has included academics from Cornell, Bern and Duke who co-wrote the 2.0 white paper.

"The conversation around tokenization has changed."Andrew McCormick, Chainlink Labs press release, 4 June 2026

The organisations

Company

Chainlink Labs

The private company that writes most of the code, signs the commercial deals and employs the people above. Previously called SmartContract. It controls the non-circulating LINK wallets. It is not the network: independent companies run the nodes.

Non-profit

Chainlink Foundation

A foundation that supports the growth of the Chainlink ecosystem through grants, education and community programmes. It operates alongside Chainlink Labs; public detail about its governance and finances is limited.

Operators

Node operators

Professional infrastructure firms run the oracle nodes. Publicly known examples include Deutsche Telekom MMS, Swisscom, LinkPool, Chainlayer, Figment and Blockdaemon. The Associated Press has run a node to publish its own data. Operators are selected and onboarded rather than joining freely.

Data

Data providers

Nodes buy data from aggregators and, increasingly, from primary sources: Deutsche Börse, FTSE Russell, Tradeweb, ICE, SIX, SGX FX, Coinbase and the US Bureau of Economic Analysis all publish through Chainlink.

Community

Stakers and advocates

Thousands of addresses stake LINK. A volunteer community runs meet-ups and translations. Unlike many crypto projects, there is no token-holder vote: LINK does not confer governance rights over the protocol.

Partners

Scale and Build members

Blockchains in the Scale programme (among them Canton, Arc, Ink, Unichain and MegaETH) help pay for oracle services on their networks. Build members are start-ups that commit tokens or fees in return for support.

Who actually controls Chainlink?Governance

There is no DAO. Decisions about the roadmap, which operators serve which feed, how the non-circulating tokens are used and when contracts are upgraded rest with Chainlink Labs and the multisig signers it works with. Node operators are independent businesses and could refuse to cooperate with something they considered improper, and users can choose other oracles, so the company's power is not unlimited. But it is fair to describe Chainlink as a decentralised service with fairly centralised governance.

Chainlink's position is that critical infrastructure securing tens of billions of dollars needs the ability to respond to emergencies in minutes, and that token voting has a poor track record elsewhere. Critics reply that the same was said by every project before it decentralised. Both points have merit.

Finished? Tick it off with "Mark read" above.Next: Sergey Nazarov →

09Profile3 min read

Sergey Nazarov: a closer look

The co-founder who has spent more than a decade making one argument: that contracts enforced by cryptography will replace contracts enforced by trust in brands.

Born1986, Soviet Union
RaisedNew York City
StudiedPhilosophy and management, NYU (2007)
RoleCo-founder; CEO of Chainlink Labs
In crypto sinceEarly 2010s
PolicyCFTC Innovation Advisory Committee (2026)

Early life and education

Nazarov was born in 1986 in the Soviet Union to parents who were both engineers. The family emigrated to the United States in the early 1990s and he grew up in New York. He studied philosophy and management at New York University, graduating in 2007, and stayed on briefly as a teaching fellow at NYU's Stern School of Business.

Before Chainlink

His first venture, in 2009, was ExistLocal, a peer-to-peer marketplace for local experiences. He also worked at the venture firm FirstMark Capital. In 2011 he set up QED Capital, a small early-stage fund through which he began building in Bitcoin's ecosystem: CryptaMail, a decentralised email service, and Secure Asset Exchange, an early decentralised exchange, both around 2014.

That September he and Steve Ellis founded SmartContract.com. The experience of selling smart contracts to businesses that then asked "but where does the data come from?" led directly to Chainlink three years later.

Building Chainlink

Nazarov co-wrote the 2017 white paper and the 2021 follow-up, and has led the company through each change of emphasis: price feeds for DeFi, then cross-chain transfers, then the push into banking. The project shows an unusually long time horizon: the Swift relationship that produced headline announcements in 2026 began with a proof of concept nearly a decade earlier.

The public figure

He is one of the most recognisable speakers in the industry, in part because he has worn much the same plaid shirt on stage for years, a habit the community turned into a mascot. His talks return to a consistent theme he calls "cryptographic truth": the claim that systems whose guarantees can be mathematically checked will, over time, outcompete systems that rely on reputation and paper contracts.

Washington and regulators

Since 2025 he has become a regular presence in US policy circles. He attended the White House Crypto Summit in March 2025 and the signing of the GENIUS stablecoin act that July, and in February 2026 was appointed to the CFTC's Innovation Advisory Committee. At Sibos 2026 he shared stages with executives from DTCC, J.P. Morgan, Microsoft, Deutsche Bank and BNP Paribas.

In his words

Speaking at Sibos in Miami in September 2026 about the direction of finance, Nazarov said tokenisation will create a parallel system for onchain cash, equities, & funds.

Source: Chainlink's Sibos 2026 recap. Quoted from Chainlink's own event summary.

Criticisms

Nazarov attracts the criticisms that attach to Chainlink Labs: that the company retains too much control, that it has sold large amounts of LINK over the years without a published schedule, and that its announcements can make pilots sound like finished deployments. He has generally answered that security-critical infrastructure must be decentralised carefully and in stages.

Is there anything to the "Sergey is Satoshi" theory?Myth check

The theory rests on coincidences: his early interest in smart contracts, a domain name reportedly registered in 2008 shortly before the Bitcoin white paper, and the initials "SN". None of this is evidence. Nazarov has not claimed to be Bitcoin's creator, and no cryptographic or documentary proof has ever linked him to Satoshi Nakamoto. It is best treated as internet folklore.

Finished? Tick it off with "Mark read" above.Next: Who uses Chainlink →

10Adoption4 min read

Who uses Chainlink

Two very different customer groups: crypto-native applications that have depended on it for years, and financial institutions that are at various stages between "experiment" and "production".

Decentralised finance

Lending

Aave

The largest DeFi lender and Chainlink's longest-standing major user. Aave V4, launched in early 2026, uses Chainlink as its exclusive oracle for prices, liquidation value recapture and moving its GHO stablecoin between chains.

Staking

Lido

Uses CCIP as the official cross-chain route for wstETH across 16 chains and published its reasoning in 2026.

Derivatives

GMX, Lighter and others

Perpetual-futures exchanges rely on Data Streams for sub-second prices, including for commodities such as oil, gold and natural gas.

Prediction markets

Polymarket

Its 5- and 15-minute crypto markets, settled by Data Streams, had passed $7 billion in volume by mid-2026. Ten prediction-market apps adopted Chainlink in Q2 2026 alone, including an official FIFA World Cup 2026 partner.

Exchanges

Coinbase, Kraken, Robinhood

Coinbase publishes its exchange data and tokenised stocks through Chainlink; Kraken moved its wrapped bitcoin to CCIP; Robinhood's own chain launched in July 2026 with Chainlink built in.

Tokenised assets

Ondo, Maple, Spiko

Issuers of tokenised Treasuries, credit and stocks use NAV feeds and CCIP. A Spiko fund built with Amundi passed $400 million within three weeks of launch.

Banks, market infrastructure and governments

The "status" column matters. A pilot proves something can work; production means real assets and clients. We have tried to label each one accurately as of October 2026.

Institution	What they did with Chainlink	When	Status
Swift	Cross-chain experiments (2023); tokenised fund settlement with UBS (2024–25); institutions connecting to the new Swift blockchain ledger through CRE with a self-signing model.	2016 → Sep 2026	Ledger connectivity announced; rollout in progress
DTCC	Smart NAV fund-data pilot; corporate-actions project; CRE and Chainlink data in its Collateral AppChain; tokenising assets held at its depository.	2024 → 2026	AppChain go-live targeted Q4 2026; DTC tokenisation in production since Jul 2026
UBS	First tokenised-fund subscription and redemption workflow in production using the Digital Transfer Agent standard (uMINT fund).	2025	Production
J.P. Morgan (Kinexys)	Cross-chain delivery-versus-payment test with Ondo using CRE.	2025	Test transaction
Fidelity International	Onchain NAV for its tokenised funds, including FILQ, launched 2026.	2024 → 2026	Live
ANZ	CCIP for tokenised-asset settlement; cross-border settlement under Hong Kong's e-HKD programme with Visa, ChinaAMC and Fidelity International.	2023 → 2026	Pilots completed
Mastercard	Route for cardholders to buy crypto assets directly onchain.	Jun 2025	Launched with partners
ICE, Deutsche Börse, SIX, FTSE Russell, Tradeweb	Publishing market data, indices and benchmark prices onchain.	2025 → 2026	Live data products
US Department of Commerce	GDP, PCE inflation and related figures from the Bureau of Economic Analysis published onchain.	Aug 2025	Live
State Street and Galaxy	SWEEP tokenised liquidity fund using NAV data and CCIP.	Q2 2026	Launched
SBI Group	Strategic partnership; SBI Digital Markets uses CCIP, including private transactions, as its interoperability layer.	2025	Adopted
21X	The first EU-regulated onchain exchange for tokenised securities publishes prices via CRE.	2025	Live
Central banks	Brazil and Hong Kong trade-finance pilot; Bank of England Synchronisation Lab; Bermuda Monetary Authority embedded-supervision project.	2025 → 2026	Pilots and labs
Wyoming Stable Token Commission	State-issued stablecoin moved to CCIP and adopted Proof of Reserve.	Aug–Sep 2026	Live

Chainlink provides "the mortar that keeps the bricks together".Stijn Vander Straeten, CEO of Deutsche Börse Group's Crypto Finance, interviewed at Sibos 2026 (via Chainlink's recap)

The Swift ledger, explainedSeptember 2026

Swift carries payment instructions between more than 11,500 institutions in over 200 markets. At Sibos 2025 it announced it would add a shared blockchain ledger to its network so that banks could settle tokenised deposits around the clock. More than 40 institutions helped design it and 17 took part in the pilot, among them BNP Paribas, BNY, Citi, HSBC, Standard Chartered, UBS and Wells Fargo.

On 28 September 2026 Chainlink said institutions can connect their existing systems to that ledger through CRE. The key design point is self-signing: the bank keeps its own keys and authorises its own transactions; Chainlink coordinates the workflow but does not sign on the bank's behalf. Tokenised deposits remain on each bank's own balance sheet.

What this is not: it is not Swift adopting the LINK token, and Chainlink is not the ledger itself. It is a connectivity role, and an important one, because most banks do not want to build blockchain plumbing in-house.

Why would a bank need an oracle network at all?Deep dive

A tokenised fund share is only useful if four things can happen automatically: the token knows its current value (data), it can move to wherever the buyer keeps cash (interoperability), it refuses to go to someone who is not allowed to hold it (compliance), and the details are not visible to the bank's competitors (privacy). On top of that, the bank's 30-year-old core systems, which speak Swift messages, have to be able to trigger all of it.

Chainlink's argument is that institutions would rather adopt one set of standards covering all five needs than assemble five vendors. That is the bet behind CRE. It faces real competition from bank-owned networks and from rival interoperability providers; see our guides to Quant and Canton for two different approaches.

Finished? Tick it off with "Mark read" above.Next: Roadmap and future →

11What comes next2 min read

Roadmap and the road ahead

Chainlink does not publish a single dated roadmap. This is assembled from its quarterly reviews and launch announcements, with each item labelled by how firm it is.

Shipped 2026

CCIP 2.0

Live since 28 September 2026 and rolling out progressively across chains. Expect issuers to begin running their own verifiers over the coming months.

Shipped 2026

Fulcrum

The collateral and repo product launched on 30 September 2026. The open question is which banks and dealers take it into production.

Scheduled

DTCC Collateral AppChain

DTCC has targeted Q4 2026 for go-live of its 24/7 collateral platform with CRE inside. One of the most closely watched deadlines.

Scheduled

Link:NYC

A one-day Chainlink event in New York on 29 October 2026, the next likely venue for announcements.

In progress

Swift ledger onboarding

Connecting more institutions to Swift's ledger through CRE. Chainlink's wording is that it is "enabling" connections; widespread live use is still ahead.

In progress

Confidential Compute

Announced in late 2025 with early access during 2026 and general availability planned for "later in 2026". Private workflows were in early rollout by Q1. We could not confirm general availability.

In progress

ACE and CRE Connect

Both were in private beta on mainnet in mid-2026. Broader availability would let any issuer bolt compliance rules onto a token.

In progress

Everything into CRE

Functions and Automation are being upgraded into CRE workflows, simplifying a sprawling product list into one developer platform.

Open question

Staking's next version

Chainlink has said the 45M pool cap should rise and staking should cover more services. No date or specification for a successor to v0.2 had been published by October 2026.

Open question

Agentic finance

Chainlink is building tools for AI agents to pay for and trigger workflows, and released "agent skills" for developers in 2026. Real demand is still unproven.

In progress

Project Pangea

The framework for same-day FX settlement with bank consortia, announced June 2026. A multi-year effort.

Open question

Governance and decentralisation

There is no announced plan to hand contract control to token holders or to publish a schedule for the remaining non-circulating supply.

The big-picture bet

Chainlink's strategy assumes that a meaningful share of the world's financial assets will be issued as tokens. Citi's "Tokenization 2030" report, which names CCIP as an interoperability standard, projects tokenised markets could reach $8.2 trillion by 2030. Other forecasts are far higher and some are far lower. If tokenisation grows slowly, or if banks keep it inside private networks they control, the institutional side of Chainlink's business will be smaller than its supporters expect.

What would change the picture

Production volume, not announcements. The useful measure for 2027 is how much real value flows through the DTCC, Swift and fund deployments.
Reserve growth relative to releases. Whether revenue-funded LINK accumulation starts to approach the pace of tokens leaving non-circulating wallets.
A serious security incident in CCIP or a major feed would damage the central selling point. So far there has not been one.
Regulation. US rules became friendlier in 2025 and 2026. That can reverse, and other regions differ.

Finished? Tick it off with "Mark read" above.Next: Comparison →

12Alternatives3 min read

Chainlink compared

Chainlink competes in two markets that overlap: oracles that deliver data, and protocols that connect blockchains. Each rival made different design choices, and several are very good at what they do.

Data oracles

	Chainlink	Pyth Network	API3	Band Protocol	RedStone
Launched	2019 (Ethereum)	2021 (Solana)	2020	2019; own chain 2020	Early 2020s
Who supplies data	Independent node operators reading several aggregators; some first-party publishers via DataLink	First-party: exchanges and trading firms publish their own prices	First-party: API owners run their own oracle nodes	Validators of BandChain fetch from sources	Data providers sign prices; modular delivery
Delivery model	Push (Data Feeds) and pull (Data Streams)	Pull first; very fast updates	Push-style managed feeds	Request-based via its own Cosmos chain	Both push and pull
Strength	Largest share of value secured (about 70%, 2025); longest record; broad product range	Speed and breadth of assets (1,400+); strong on Solana and in derivatives	No middlemen between source and chain; value-recapture network	Low cost; Cosmos ecosystem integration	Fast to support new chains (110+) and new assets
Trade-off	Admin multisigs; operators are permissioned; no token governance	Relies on publishers behaving; users must submit updates themselves	Smaller footprint; depends on API owners staying engaged	Much smaller adoption in recent years	Younger; shorter track record
Token role	LINK: payment, staking deposit, Reserve asset; no governance	PYTH: governance and publisher staking	API3: DAO governance and staking	BAND: staking to secure BandChain	RED: staking

Both Chainlink and Pyth were chosen by the US Department of Commerce to publish economic data in 2025. Market-share and asset counts are from DefiLlama and third-party comparisons dated 2025–26 and move constantly.

Cross-chain protocols

	Chainlink CCIP	LayerZero	Wormhole
Who verifies a message	Chainlink oracle networks plus independent verification; from v2.0, optional issuer-run Cross-Chain Verifiers	Whatever set of "decentralised verifier networks" each application configures	A fixed set of 19 "Guardian" validators; 13 must sign
Security posture	Opinionated: defence in depth and rate limits on by default	Flexible: each app chooses its own security, for better or worse	One shared guardian set for everyone
Token standard	Cross-Chain Token (CCT)	Omnichain Fungible Token (OFT)	Native Token Transfers (NTT)
Notable incidents	No known exploit of CCIP to date	April 2026: about $292M taken from Kelp DAO's bridge, which used a single verifier, then a common default. LayerZero has since stopped supporting single-verifier setups.	February 2022: roughly $320M exploit, later made whole by a backer
Where it is strong	Institutions and large DeFi issuers; audited controls (SOC 2, ISO 27001)	Widest chain coverage and developer adoption; very large historical volume	Deep Solana roots; broad multichain liquidity
Trade-off	Has at times been slower to add chains and costlier than rivals; relies on Chainlink's operator set	Misconfiguration risk sits with each app team	Trust concentrated in the guardian set

How to read this. After April 2026, more than $7 billion of token value moved to CCIP in a single quarter, which Chainlink called a "flight to safety". That is a real shift. It is also true that the Kelp loss came from a configuration choice, not from a flaw every LayerZero application shared, and that no bridge design has yet proved itself over decades. Sensible issuers increasingly use more than one layer of verification, which is exactly what CCIP 2.0 and LayerZero's revised defaults both now encourage.

Other names you will meet: Chronicle (the oracle originally built for MakerDAO), Axelar, Circle's CCTP for USDC, and bank-focused networks such as Canton and Quant's Overledger.

Finished? Tick it off with "Mark read" above.Next: Wallets guide →

13Storage3 min read

Wallets for LINK

LINK is an Ethereum token, so there is no special "Chainlink wallet". Any reputable Ethereum wallet will hold it. The choice is about how you balance convenience and safety.

11 wallets shown

Hardware

Ledger

The most widely used hardware wallet family. Keys stay on the device; LINK is managed in the Ledger app or by pairing with MetaMask or Rabby.

Hardware

Trezor

Open-source hardware wallets with native ERC-20 support in Trezor Suite. A good fit if you value auditable firmware.

Hardware (card)

Tangem

A card-shaped wallet you tap against your phone. Simple to use, with no cable, battery or screen. Check the backup-card setup carefully.

Hardware (air-gapped)

Keystone

Signs transactions by QR code and never connects by USB or Bluetooth. Pairs with MetaMask and other software wallets.

Browser and mobile

MetaMask

The default Ethereum wallet. Shows LINK automatically on Ethereum; works with the official staking app and almost every DeFi site.

Browser and mobile

Rabby

A MetaMask alternative that previews what each transaction will do before you sign and switches networks for you.

Mobile and browser

Trust Wallet

A popular multi-chain mobile wallet. Supports LINK on Ethereum and on other networks where bridged LINK exists.

Mobile and browser

Coinbase's self-custody wallet

Separate from the Coinbase exchange: you hold the keys. Convenient if you already buy through Coinbase.

Desktop and mobile

Exodus

A polished multi-asset wallet for beginners, with Trezor and Ledger integration for larger balances.

Mobile and browser

Phantom

Best known for Solana but also supports Ethereum tokens, which is handy now that LINK and CCIP span both ecosystems.

Multi-signature

Safe

A smart-contract account that needs several approvals (say, 2 of 3 keys) to move funds. The standard for treasuries, and useful for families or serious holdings.

Listing is not endorsement. Download wallets only from the maker's official site or app store page, and check current reviews: products and companies change.

Five rules that prevent most losses

Your recovery phrase is the wallet
Write the 12 or 24 words on paper or metal and keep them offline. Never type them into a website, photograph them or store them in cloud notes. No genuine support agent will ever ask for them.
Check the network before you send
LINK exists on Ethereum and, in bridged form, on many other networks. Sending to an exchange on a network it does not support can lose the funds. Match the network on both sides and send a small test first.
Keep some ETH for fees
Moving LINK on Ethereum costs a fee paid in ether, not in LINK. A wallet holding only LINK cannot send it.
Verify the token contract
Scammers create fake "LINK" tokens. The genuine Ethereum contract begins 0x5149…86CA. Confirm the full address in Chainlink's documentation.
Distrust anything urgent
Fake staking sites, "airdrop claim" pages and impostor accounts are the most common ways people lose LINK. Reach the staking app only through links on chain.link, and read what a transaction does before signing.

Should I leave LINK on an exchange?Custody

For small amounts or if you trade often, an exchange account is convenient and spares you from managing keys. The cost is that the exchange holds your coins: if it is hacked, freezes withdrawals or fails, you are a creditor. Moving long-term holdings to a wallet you control removes that risk and replaces it with the responsibility of protecting your recovery phrase. Many people split holdings between the two.

Finished? Tick it off with "Mark read" above.Next: Where and how to buy →

14Practical2 min read

Where and how to buy LINK

This is a how-to, not a recommendation. Nothing here is advice to buy, and you should only use money you can afford to lose.

Easiest

Centralised exchanges

Coinbase, Kraken, Binance, OKX, Bybit, Gemini, Bitstamp and Robinhood all list LINK. You deposit ordinary money, buy, and can withdraw to your own wallet. Requires identity checks. Availability varies by country and, in the US, sometimes by state.

Self-custody

Decentralised exchanges

Uniswap and aggregators such as 1inch or CoW Swap let you swap ETH or stablecoins for LINK from your own wallet. No account needed, but you pay network fees and must avoid fake tokens.

Brokerage

Exchange-traded funds

In the US, GLNK (Grayscale) and CLNK (Bitwise) trade like shares. Suited to retirement or brokerage accounts. You get price exposure, not tokens, and pay about 0.35% a year.

Step by step on an exchange

Choose a regulated exchange that serves your country
Compare fees, check it is licensed where you live and read recent user reviews. Be wary of platforms you have only seen in adverts or direct messages.
Create an account and secure it
Use a unique password and an authenticator app or security key for two-factor login. Avoid SMS codes where possible.
Verify your identity
Expect to upload an identity document and sometimes proof of address. This is a legal requirement, not a scam, provided you are on the real site.
Deposit funds
Bank transfer is usually cheapest. Card purchases are faster but often carry fees of 2% to 4%.
Place the order
Search for "LINK" and check the name reads Chainlink. A market order buys immediately at the current price. A limit order lets you name your price and often costs less in fees.
Decide where to keep it
Leave it on the exchange or withdraw to your own wallet. If you withdraw, choose the Ethereum network unless you know you need another, and send a small test first.
Keep records
In most countries selling or swapping crypto is a taxable event and staking rewards may count as income. Download your transaction history regularly.

Before you buy anything volatile: LINK fell roughly 90% from its 2021 high to its later lows, and even after recovering it was still roughly three-quarters below that high in October 2026. Position sizes that feel fine in a rising market can feel very different in a falling one.

What about LINK on Solana, Base, Arbitrum and other networks?Multi-chain

The original LINK lives on Ethereum. Versions on other networks are created by locking LINK and issuing a representation elsewhere, increasingly through CCIP itself. They trade at the same price and can be moved back, but each is a separate token contract. If you plan to stake in the official programme, you need LINK on Ethereum mainnet.

Finished? Tick it off with "Mark read" above.Next: Staking explained →

15Earning and securing4 min read

Staking explained

Staking LINK means locking tokens as a guarantee behind oracle services. It pays a reward, but it works differently from staking on a proof-of-stake blockchain.

What staking is for

A node operator who has LINK locked up loses some of it if the service fails. That gives users a reason to trust the feed beyond reputation alone. Community members can add their own LINK to the pool, increasing the total deposit behind the network and sharing in rewards. Community stakers also act as watchdogs: they can raise an alert if a staked feed stops updating.

The versions so far

Dec 2022 – Nov 2023

v0.1

A deliberately limited first step: 25 million LINK cap, tokens locked with no way out until the next version, and protection for a single feed (ETH/USD on Ethereum). It is now inactive.

Since 28 Nov 2023

v0.2 (current)

Pool raised to 45 million LINK (40.875M for the community, 4.125M for node operators), an unbonding mechanism so stakers can leave, slashing for operators, and a modular design intended to extend to other services later.

The rules of v0.2 at a glance

Rule	Community stakers	Node operator stakers
Stake size	1 to 15,000 LINK per address	1,000 to 75,000 LINK
Base reward (floor)	4.5% a year in LINK; 4.32% after the 4% share passed to operators	4.5% plus delegation rewards
Can be slashed?	No	Yes: 700 LINK each if a valid alert is raised on the ETH/USD feed
Leaving	28-day cooldown, then a 7-day window to withdraw. Miss it and the LINK is re-staked.
Reward ramp-up	Rewards become fully claimable over 90 days. Unstaking any amount resets the ramp and forfeits unvested rewards to remaining stakers.
Alerting	May raise an alert if the feed has not updated for over three hours; a valid alert earns 7,000 LINK	Get a 20-minute head start to alert
Where	Ethereum mainnet only

What does 4.32% look like?

Calculator

LINK staked

Per year at the floor rate

—

Per month

—

Shown in LINK, not dollars. This is an illustration using the launch-time floor rate; the actual rate varies, and the value of both your stake and your rewards moves with the LINK price. Network fees apply when you stake, claim and withdraw.

How to stake

Hold LINK and a little ETH in a self-custody wallet
On Ethereum mainnet. A hardware wallet connected through MetaMask or Rabby is the careful option.
Go to the official staking app
Navigate from chain.link rather than a search advert. Bookmark it.
Check whether the pool has room
The pool is capped and has frequently been full. Space opens when others withdraw.
Stake, then leave it alone
Adding more later restarts your 90-day ramp-up. Withdrawing early forfeits part of your rewards.
To exit, start the cooldown and set a reminder
After 28 days you have 7 days to withdraw.

Extra

Chainlink Rewards

Stakers also earn non-transferable "Cubes" that can be allocated to projects in the Build programme to claim their tokens. Season 1 opened in November 2025 with nine projects; claimed tokens unlock over 90 days. An earlier round made 100 million SXT available to eligible stakers.

Caution

Liquid staking and exchange "earn" products

Third parties such as stake.link issue a tradable token for staked LINK, and exchanges offer LINK yield. These are not the official programme. They add smart-contract, counterparty or lending risk in exchange for flexibility.

Where do staking rewards come from?Deep dive

Not from new issuance, because LINK cannot be minted. Rewards are paid from the non-circulating supply originally set aside for node operators: on-chain trackers showed 2.6 million LINK moving to the staking rewards multisig in June 2026, for example. Chainlink's stated aim is for user fees to fund rewards over time. In 2025, half of the network's share of SVR fees that had been earmarked for operators was redirected to the Reserve.

In plain terms: today's staking yield is largely a distribution of existing reserves to people willing to lock up tokens, not a share of profits.

What are the risks of staking?Deep dive

Price risk dwarfs the yield. A 4% reward does not offset a 40% fall.
Illiquidity. You cannot sell for at least 28 days after deciding to leave.
Smart-contract risk. The contracts are audited and have run since 2023 without loss, but no contract is risk-free.
Rule changes. Parameters can be changed by Chainlink through a timelock; the longest delays exceed the unbonding period so stakers can exit first.
Phishing. Fake staking sites are the most likely way to actually lose tokens.

Finished? Tick it off with "Mark read" above.Next: Risks and criticisms →

16The other side3 min read

Risks and criticisms

Any honest guide has to give the case against. These are the strongest objections, with the usual responses, so you can weigh them yourself.

Centralisation

Multisig control of feeds

Price-feed contracts can be reconfigured by multisig wallets. In September 2023 a signer was removed without announcement, and researcher Chris Blec argued the multisig could change "any Chainlink price feed". Chainlink said it was routine rotation and that the threshold was unchanged.

Response: upgradeability lets the network react to emergencies within minutes; signers are said to be geographically and organisationally spread. Still true: users are trusting those signers, whose identities are not fully public.

Token economics

Does success reach the token?

A bank can use Chainlink under a contract paid in dollars and never touch LINK. Sceptics argue the token is therefore loosely connected to the business. The Reserve and Payment Abstraction are Chainlink's answer.

Still true: conversions of offchain revenue are at the company's discretion, total revenue is not audited or published in detail, and the Reserve holds under 1% of supply.

Supply

Company token sales

About 233 million LINK remained non-circulating in October 2026, with no published schedule. Releases of 10 to 21 million a quarter, most routed to Binance, have been a constant for years. Glassnode documented the pattern as early as 2019.

Response: sales fund development of a network that charges users relatively little, and part goes to staking rewards. Still true: it is persistent selling pressure with limited disclosure.

Competition

Rivals are credible

Pyth is faster for derivatives and strong on Solana; RedStone is quick to support new chains; LayerZero and Wormhole carry large cross-chain volumes; and banks may prefer networks they own. Oracle services may also become cheap commodities.

Response: security record, audits and breadth are hard to copy. Still true: market share in fast-growing niches is contested.

Operations

Oracle failures and edge cases

Correct data can still hurt. In May 2022 a price floor left the LUNA feed above the market and Venus and Blizz lost about $19 million between them. In early 2026 Moonwell mis-wired a Chainlink-based wrapper and took $1.78 million of bad debt.

Response: these were configuration and integration failures, and Chainlink publishes guidance on both. Still true: users of DeFi bear the result either way.

Dependency

Reliance on one company

Chainlink Labs writes the software, selects operators, negotiates deals and holds the reserves. There is no token-holder governance. If the company stumbled, the network would be badly affected.

Response: node operators are independent and the code is open source. Still true: this is key-company risk of a kind Bitcoin, for example, does not have.

Communication

Announcements versus production

Many institutional headlines describe pilots or intentions. Chainlink's own metrics, such as "transaction value enabled", are cumulative and flattering by construction.

Response: several deployments are now genuinely live (UBS, Fidelity International, DTCC's depository tokens). Still true: readers should check the verbs.

Systemic

Concentration risk for DeFi

With roughly 70% of oracle-secured value, Chainlink is a single point of dependency for much of decentralised finance. A serious fault would spread widely and quickly.

Response: each feed is a separate network with separate operators. Still true: shared software and shared admin keys are common-mode risks.

Staking

Limited "skin in the game"

The 45M LINK pool is small next to $110 billion secured, and slashing covers one feed with a 700 LINK penalty per operator. Staking today is more a first step than a full economic guarantee.

Response: the design is intentionally incremental. Still true: the timetable for expansion is unknown.

Market

Volatility and regulation

LINK has fallen roughly 90% from a peak before. Its US classification as a digital commodity dates only from 2026, and rules elsewhere differ and can change.

No price history or legal status guarantees anything about the future.

Chainlink attributed the LUNA circuit-breaker event to "unprecedented volatility across the cryptocurrency markets".Chainlink statement reported by The Record, 13 May 2022

Finished? Tick it off with "Mark read" above.Next: Myths vs facts →

17Reality check3 min read

Myths versus facts

Ten things you will hear about Chainlink, from fans and critics alike. Tap each to see what holds up.

Myth"Chainlink is a blockchain."Show the facts

What holds up

Chainlink has no chain of its own. It is a collection of oracle networks that serve many blockchains — more than 60 by 2026 — and LINK is a token on Ethereum.

Myth"Oracles just copy a price from one exchange."Show the facts

What holds up

Each node pulls from several professional data aggregators, which in turn blend many exchanges weighted by volume. The network then takes the median across nodes. That is three layers of aggregation before a number lands onchain.

Myth"Banks using Chainlink means banks are buying LINK."Show the facts

What holds up

Institutions typically sign commercial contracts and many will never touch the token. Chainlink says revenue is converted to LINK through Payment Abstraction, with part held in the Reserve. That is a real mechanism, but its scale relative to supply is modest so far: about 6 million LINK against a billion.

Myth"A partnership announcement means it is live in production."Show the facts

What holds up

Many headlines describe pilots, proofs of concept or stated intentions. Read the verbs. "Completed a production workflow" (UBS, 2025) is different from "working to enable" or "exploring". This site tries to keep that distinction.

Myth"Chainlink is fully decentralised, so nobody can change a feed."Show the facts

What holds up

Feeds are produced by many independent operators, which is meaningful decentralisation. But the contracts are upgradeable and administered by multisig wallets. Chainlink says this allows quick responses to emergencies; critics say it is a trust assumption users should know about.

Myth"Staking LINK is like staking ETH."Show the facts

What holds up

Not really. LINK staking does not validate a blockchain. It is a capped security deposit behind specific oracle services, currently with slashing only for node operators on one feed. Rewards come from a pre-allocated pool rather than from protocol inflation.

Myth"The supply is fixed, so there is no dilution."Show the facts

What holds up

The total is capped at 1 billion, but about 23% was still outside circulation in October 2026 and is released in batches of roughly 10 to 21 million a quarter. Existing holders are not diluted by new minting, but the tradable float does keep growing.

Myth"Chainlink has never had a problem."Show the facts

What holds up

The oracle networks have a strong record, but the wider system has had incidents: LUNA in 2022, a spam attack on operators in 2020, and integration errors by protocols. A correct price delivered to a badly configured contract can still cause losses.

Myth"CCIP won because competitors got hacked."Show the facts

What holds up

The April 2026 Kelp exploit did trigger a wave of migrations to CCIP. But that exploit came from a single-verifier configuration, and other bridges have since tightened their defaults. Security reputations in cross-chain have changed hands before; none is permanent.

Myth"Sergey Nazarov is Satoshi Nakamoto."Show the facts

What holds up

A long-running internet theory with no evidence beyond coincidences. Nazarov has not claimed it, and nothing verifiable supports it.

Finished? Tick it off with "Mark read" above.Next: Glossary →

18Reference4 min read

Searchable glossary

Plain-English definitions of every piece of jargon used on this page.

Search the glossary

50 terms

ACE: Automated Compliance Engine. Chainlink's toolkit for enforcing identity and policy rules on tokens across chains.
Aggregation: Combining many nodes' answers into one, usually by taking the median, so no single node decides the result.
API: A way for one computer system to request data from another. Most real-world data reaches oracles through APIs.
Automation: Chainlink's service for triggering smart-contract functions when conditions are met. Formerly Keepers.
Build: A programme in which projects commit tokens or fees to the Chainlink ecosystem in exchange for services and support.
CCIP: Cross-Chain Interoperability Protocol. Chainlink's standard for moving tokens and messages between blockchains.
CCT: Cross-Chain Token standard. A way to make a token multi-chain through CCIP while the issuer keeps control.
CCV: Cross-Chain Verifier. In CCIP 2.0, an extra verification layer a token issuer can run or appoint.
Chainlink Labs: The private company, led by Sergey Nazarov, that is the main developer of the Chainlink protocol.
Chainlink Foundation: A non-profit that supports the growth of the Chainlink ecosystem alongside Chainlink Labs.
Circuit breaker: A safety limit on a feed, such as a minimum or maximum price. It can stop manipulation but can also leave a price stale, as with LUNA in 2022.
Cooldown (unbonding): The 28-day wait between asking to unstake LINK and being able to withdraw it.
CRE: Chainlink Runtime Environment. An orchestration layer for writing workflows that span data, chains and legacy systems.
Data Feed: An onchain reference value, most often a price, maintained by an oracle network on a push basis.
Data Streams: High-frequency, signed market data that applications pull and verify onchain at the moment of use.
DeFi: Decentralised finance: lending, trading and other financial services run by smart contracts rather than companies.
Deviation threshold: How far a price must move (for example 0.5%) before a feed publishes a new onchain update.
DON: Decentralised oracle network. A committee of independent nodes that jointly performs a service and signs the result.
DTA: Digital Transfer Agent standard. A specification for running fund administration tasks onchain.
DvP: Delivery versus payment. The asset and the cash change hands at the same instant, so neither side can be left empty-handed.
ERC-20: The common standard for tokens on Ethereum. LINK is compatible with it.
ERC-677: An extension of ERC-20 used by LINK that adds "transferAndCall", letting a payment trigger an action in one step.
Heartbeat: The maximum time a feed will go without an update, even if the price has not moved.
ISO 20022: The messaging standard used by banks worldwide. Chainlink's Swift work lets these messages trigger onchain actions.
LINK: The token of the Chainlink network: used to pay for services, as a staking deposit and as the asset held in the Reserve.
Median: The middle value when answers are sorted. Unlike an average, it ignores extreme outliers.
MEV / OEV: Profit extracted by ordering transactions cleverly. "Oracle extractable value" is the part triggered by price updates; SVR aims to recapture it.
Multisig: A wallet needing several signatures. Chainlink feed contracts are administered by multisigs, which critics see as a centralisation risk.
NAV: Net asset value: what one share of a fund is worth. Publishing it onchain is essential for tokenised funds.
Node operator: A company that runs Chainlink node software, fetches data and signs reports. Examples include Deutsche Telekom MMS and Swisscom.
OCR: Off-Chain Reporting. The protocol nodes use to reach agreement offchain and post a single signed report.
Oracle: Any system that brings outside information to a blockchain, or sends blockchain instructions out to the world.
Oracle problem: A blockchain cannot verify outside facts itself, and a single trusted source would undo the point of decentralisation.
Payment Abstraction: Infrastructure that lets users pay for Chainlink services in other assets, which are then converted to LINK.
Proof of Reserve: Feeds that report the assets backing a token so contracts and users can check them automatically.
Pull oracle: A design where the application fetches a signed price and submits it onchain itself, when needed.
Push oracle: A design where the oracle network writes updates onchain on a schedule, so data is always there to read.
Rate limit: A cap on how much value can cross a CCIP lane in a period, limiting damage if something goes wrong.
Reserve: The Chainlink Reserve: a timelocked onchain contract accumulating LINK bought with network and enterprise revenue.
RWA: Real-world asset. A traditional asset such as a bond, fund or property represented by a token.
Scale: A programme in which blockchains pay some oracle operating costs to speed up growth on their network.
Slashing: Taking part of a staker's deposit as a penalty. In v0.2 only node operators can be slashed.
Smart contract: A program stored on a blockchain that runs exactly as written when its conditions are met.
Staking: Locking LINK as a security deposit behind oracle services in return for rewards.
SVR: Smart Value Recapture. Price feeds that auction liquidation rights and share the proceeds with protocols.
Tokenisation: Issuing a blockchain token that represents ownership of an asset such as a fund share, bond or deposit.
Tokenised deposit: A commercial bank balance recorded on a blockchain ledger. It is bank money, not a stablecoin.
TVE: Transaction value enabled. Chainlink's cumulative measure of the value of transactions its services have facilitated.
TVS: Total value secured. The value held in applications that depend on a given oracle provider.
VRF: Verifiable random function. Random numbers delivered with a cryptographic proof of fairness.

Finished? Tick it off with "Mark read" above.Next: Quiz →

19Test yourself4 min read

The Chainlink quiz

Fourteen questions covering the whole guide. Each answer comes with an explanation.

The quiz needs JavaScript. All of the answers are in the sections above.

Finished? Tick it off with "Mark read" above.Next: FAQ →

20Quick answers3 min read

Frequently asked questions

Short answers to the questions people ask most.

What is Chainlink in one sentence?

Chainlink is a network of independent computers, called oracles, that delivers outside data to blockchains, moves value between blockchains and connects them to existing financial systems, so that smart contracts can do useful things in the real world.

What is the difference between Chainlink and LINK?

Chainlink is the network and its services. LINK is the token used within that network: it pays node operators, is locked as a staking deposit, and is the asset accumulated in the Chainlink Reserve. You can use applications that depend on Chainlink without ever owning LINK.

Who created Chainlink?

Sergey Nazarov and Steve Ellis founded SmartContract.com in 2014 and launched Chainlink in 2017, writing the white paper with Cornell Tech professor Ari Juels. Chainlink Labs, with Nazarov as chief executive, remains the main developer.

Is Chainlink a blockchain?

No. Chainlink is not a blockchain and has no blocks of its own. It is a set of oracle networks that run alongside blockchains and write to them. LINK itself lives on Ethereum as a token.

How many LINK are there?

The maximum and total supply is 1 billion LINK, all created in 2017. Roughly 767 million were circulating in October 2026. The remainder sits in non-circulating wallets controlled by Chainlink Labs and is released in batches, typically each quarter.

Can I mine LINK?

No. LINK is not mined. Node operators earn LINK by providing services, and stakers earn LINK rewards, but no new tokens are created.

Can I stake LINK, and what does it pay?

Yes, through the official staking app when the pool has space. Community stakers can deposit between 1 and 15,000 LINK. The floor reward rate at launch was 4.5% a year in LINK, or 4.32% after the share that goes to node operators. The rate is variable, the pool is capped at 45 million LINK and is often full, and withdrawals take 28 days.

Is there a Chainlink ETF?

Yes. In the United States, the Grayscale Chainlink Trust ETF (GLNK) began trading on 2 December 2025 and the Bitwise Chainlink ETF (CLNK) on 14 January 2026. Both hold LINK directly. They give price exposure through a brokerage account but you do not own the tokens.

Does the Swift partnership mean banks have to buy LINK?

No. Banks using Chainlink infrastructure generally pay under commercial agreements, often in ordinary currency. Chainlink says a system called Payment Abstraction converts such revenue into LINK, some of which goes to the Reserve. How much value this creates for the token is debated.

Has Chainlink ever been hacked?

The core oracle networks have not suffered a known compromise in which nodes were made to publish false prices. There have been incidents around the edges: a 2020 spam attack that cost node operators gas, the 2022 LUNA circuit-breaker episode, and integration mistakes by protocols such as Moonwell in 2026.

What are Chainlink's main competitors?

For price data: Pyth Network, RedStone, API3, Band Protocol and Chronicle. For cross-chain messaging: LayerZero, Wormhole, Axelar and Circle's CCTP. Chainlink is the largest oracle provider by value secured, with roughly 70% share on DefiLlama's measure in 2025.

Where can I buy LINK?

LINK is listed on almost every major exchange, including Coinbase, Kraken, Binance, OKX, Gemini and Robinhood, and on decentralised exchanges such as Uniswap. Availability depends on your country.

Which wallet should I use for LINK?

Any Ethereum-compatible wallet works. For meaningful amounts, a hardware wallet such as a Ledger or Trezor is the usual recommendation. MetaMask or Rabby are common for everyday use and for staking.

Is LINK a security?

In the United States, a joint SEC and CFTC interpretation in early 2026 classed LINK as a digital commodity, according to Chainlink's Q1 2026 review. Treatment differs elsewhere, and rules can change.

Is LINK a good investment?

This site does not give investment advice or price predictions. LINK is a volatile crypto asset and you can lose money. Read the risks section, look at the sources, and speak to a qualified adviser if you need personal guidance.

Finished? Tick it off with "Mark read" above.Next: Sources →

21Check our work2 min read

Sources and further reading

Everything dated on this page was checked against these sources in October 2026. Where a figure comes from Chainlink itself we say so; treat company-reported numbers with appropriate care.

Corrections. Crypto moves quickly and we will have got something wrong or out of date. Titles and roles of individuals, the status of pilots, and supply figures are the most likely to have changed since October 2026. Always confirm anything important against primary sources.

That is the whole guide.

Keep exploring

Related guides

This site is part of The Coin Galaxy, a series of independent explainers. These are the guides that bear most directly on Chainlink.

The Coin GalaxyPart of The Coin Galaxy: browse every guide · thecoingalaxy.com Ethereum UnpackedThe chain LINK lives on and where Chainlink feeds first went live · ethereumunpacked.com What is Aave?The lending market that liquidates positions off Chainlink price feeds · whatisaave.com What is Ondo?Tokenised Treasuries that use Chainlink feeds and CCIP to move across chains · whatisondo.com What is Quant?The other interoperability pitch to banks, compared with CCIP in this guide · whatisquant.com

What is Chainlink, and what is LINK?

Network figures worth knowing

Blockchains are blind

Do not trust one messenger

More than price feeds

What LINK is for

Five facts to remember

Before Chainlink: SmartContract.com (2014)

A bank experiment

The 2017 white paper

The token sale

Quiet years, then mainnet (2018–2019)

From price feeds to "platform" (2020–2026)

SmartContract.com is founded

Chainlink is announced

The white paper

Token sale raises $32 million

Town Crier joins

Mainnet launch on Ethereum

First team token sales noticed

VRF and Proof of Reserve

DECO acquired from Cornell

Node spam attack

Off-Chain Reporting (OCR)

Chainlink 2.0 white paper

All-time high near $53

Eric Schmidt becomes an adviser

The LUNA circuit breaker

Economics 2.0, Build and Scale

Staking v0.1

CCIP reaches mainnet

Swift publishes its CCIP experiments

Multisig controversy

Data Streams

Staking v0.2

DTCC Smart NAV pilot

Swift, UBS and Chainlink in Singapore

Smart Value Recapture (SVR)

White House Crypto Summit

CCIP reaches Solana

Mastercard partnership

The Chainlink Reserve

ICE and the US government

Sibos 2025

Brazil–Hong Kong pilot

SmartCon: CRE and Confidential Compute

First US LINK ETF

Bitwise launches CLNK

CME futures and a CFTC seat

Moonwell misconfiguration

Equities, Aave V4, Atlas

The Kelp bridge exploit (not Chainlink)

$30 trillion in transaction value

DTCC Collateral AppChain

Project Pangea

Quarterly release: 21M LINK

Robinhood Chain

TVS at $110 billion

Coinbase and Wyoming

CCIP 2.0 and the Swift ledger

Chainlink Fulcrum

Reserve passes 6M; another release

1. The oracle problem

2. A decentralised oracle network

Many sources

Many nodes

Agreement offchain

One onchain update

Payment and reputation

Try it: can a lying node move the price?

3. When does a feed update?

Try it: deviation and heartbeat

4. Push and pull

5. Crossing chains with CCIP

Try it: send a cross-chain transfer

Data Feeds

Data Streams

SmartData and Proof of Reserve

DataLink

SVR (Smart Value Recapture)