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      placeholder="Enter your email address" id="Email" required=""><input type="submit" value="Subscribe now" data-wait="Please wait..." class="btn btn-secondary w-button"></div><label id="checkbox"
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Text Content

Developers
Developers
Docs
Start building your universally connected smart contracts

Developer Resources
Tools, tutorials, and technical support

Developer Experts Program
Chainlink’s most active and supportive technical community members
Products
Products
Cross-Chain Communication

new
Global standard for building secure cross-chain applications

Market and Data Feeds
Decentralized and high-quality data feeds for DeFi, sports, weather, and more

Functions
Serverless developer platform that can fetch data from any API and run custom
compute

Automation
Reliable, high-performance, decentralized automation for smart contracts

VRF
Verifiable, tamper-proof random number generator for blockchain gaming and NFT
projects

Proof of Reserve
Autonomous, reliable, and timely verification of on-chain and off-chain
reserves 
Use Cases
Use Cases
Overview
Decentralized services powering hybrid smart contract use cases across a
wide-variety of industries
Learn more
Financial Services


DeFi


Gaming

NFT Collectibles

Climate Markets

Enterprise

Insurance
Ecosystem
Ecosystem
Chainlink Ecosystem
Provide oracle computation directly to smart contracts and earn revenue by
running critical data infrastructure

Data Providers
Leverage the Chainlink Network to make your data accessible on-chain directly
through your own Chainlink nodes
Community
Community
Chainlink Community
Gain access to resources and events for Chainlink’s global community
Learn more
Grant Program

Funding and supporting the creation of new smart contract applications built by
the community

Events
Upcoming Chainlink virtual and in-person events, hackathons, meetups, and more
Resources
Resources
Blog
Discover the latest product news, deep dives, developer tutorials, and more
Learn more
Whitepaper


Case Studies


Tech Talks

FAQs

Education Hub
Economics
Economics
Staking app
Stake your LINK to help secure the Chainlink Network and earn rewards
View the app
Economics 2.0


Staking

BUILD Program
Connect Wallet
Menu

Connect Wallet

Total Airdrop Value:
$
50,000,000
Chainlink TVE is calculated by taking the sum of the USD value associated with
each transaction utilizing Price Feeds since the start of 2022, currently
covering Arbitrum, Avalanche, BNB Chain, Ethereum, Fantom, Gnosis Chain, HECO
Chain, Metis, Moonbeam, Moonriver, Optimism, and Polygon.
Updated
June 27, 2023

NEW
The ChainLink Airdrop is here!
Connect Wallet
SmartCon is LIVE right now. Discover 200+ leading DeFi, NFT, and blockchain
projects.

Sign up today
Airdrop Live
Participate in the ChainLink Airdrop!
Connect Wallet
Chainlink Labs is hiring. Come join an industry-leading team.
See current openings


WELCOME TO THE CHAINLINK AIRDROP!



ChainLink is providing its community with a $50,000,000 Airdrop! Giving back to
those who are here today, building the Web3 World of tomorrow together with us.

Connect Wallet

Questions? 

Contact us.

Slide 7 of 7.






CREATE WEB3 VALUE WITH CHAINLINK SOLUTIONS


RELIABLE, TAMPER-PROOF NETWORK

Use decentralization, trusted nodes, premium data, and cryptographic proofs to
connect highly accurate and available data/APIs to any smart contract.


SEAMLESS CONNECTION TO ANY API

Build on a flexible framework that can retrieve data from any API, connect with
existing systems, and integrate with any current or future blockchain.


PROVEN, READY-MADE SOLUTIONS

Integrate pre-built, time-tested oracle solutions that already secure tens of
billions in smart contract value for market-leading decentralized applications.



HIGHLY RELIABLE AUTOMATION

Use a decentralized network of Chainlink Automation nodes to automate contracts,
mitigating risk of manual interventions and centralized servers. 

Deploy your Chainlink smart contract


INTEGRATE CHAINLINK SERVICES INTO YOUR DAPP TODAY

Data & Services

RUN
Market Data
□
□
□
int256:
34361000000

function getThePrice() public view returns (int) {
       (
           uint80 roundID,
           int price,
           uint startedAt,
           uint timeStamp,
           uint80 answeredInRound
       ) = priceFeed.latestRoundData();
       return price;
   }

Integrate Price Feeds

RUN
Weather Data
□
□
□
uint256:
30218644067796614000

function requestAvgTemp(
   ) external {
       Chainlink.Request memory req = buildChainlinkRequest(
           avgTempJobId,
           address(this),
           this.fulfillAvgTemp.selector
       );
       sendChainlinkRequest(req, fee);
   }

Integrate weather data

RUN
Sports Data
□
□
□
int256:
168000000000000000000

function requestScore(
   ) external {
       Chainlink.Request memory req = buildChainlinkRequest(
           sportScoreJobId,
           address(this),
           this.fulfillWinner.selector
       );
       sendChainlinkRequest(req, fee);
   }

Integrate sports data

RUN
Keepers
□
□
□
TRUE

function checkUpkeep(
   bytes calldata checkData
 )
   external
   returns (
       bool upkeepNeeded,
       bytes memory performData
   );

Integrate Chainlink Automation

RUN
Randomness
□
□
□
int256:
1164636110501196599387136881304611
0418128642690385609708155250752713
810786281

unit256 public randomResult;
function fulfillRandomness(uint256 requestId, unit256[] randomness) internal
override {
      randomResult = (randomness[0] % 50) + 1;
}



Integrate Chainlink VRF

RUN
Any Api
□
□
□
int256:
425500000000000000000

function requestData() public returns (bytes32 requestId)
{
   Chainlink.Request memory request = buildChainlinkRequest(jobId,
address(this), this.fulfill.selector);
   request.add("get", "https://my-api.com/endpoint");
   request.add("path", "status");    
   return sendChainlinkRequestTo(oracle, request, fee);
}
function fulfill(bytes32 _requestId, uint256 _response) public
recordChainlinkFulfillment(_requestId)
{
   response = _response;
}

Access any external data
Market Data

Weather Data

Sports Data


Automation

Randomness


Any API



POWERING THE FUTURE OF SMART CONTRACTS

“Part of composability is that you don’t have to build everything by yourself.
Chainlink’s oracle is very good, and it’s part of this whole composability idea,
it’s vital.”


Stani Kulechov

CEO

“We really did our due diligence and looked around... Chainlink is definitely
the most established, and every time we dealt with them the level of expertise
was incredible so I feel like we are in good hands.”

Justin Moses

CTO

“This product is built on the foundation of blockchain technology and utilizes
Arbol’s smart contracts along with decentralized weather data provided by
Chainlink to offer users a product unlike any other on the market.”

Siddhartha Jha

CEO and Founder



"Public network infrastructure provisioning has been a core business model of
telco companies for decades. Providing critical Web3 infrastructure by running
Chainlink oracle nodes has enabled new revenue streams and opened the door to
Web3 opportunities."

Dr. Andreas Dittrich

Head of Blockchain Solutions Center


View Chainlink Data FeedsExplore solutions


BUILD AND LEARN WITH CHAINLINK

Guides /
Education



WHAT IS CHAINLINK? A BEGINNER’S GUIDE

Guides /
Education



77+ SMART CONTRACT USE CASES ENABLED BY CHAINLINK

Guides /
External APIs



HOW TO CONNECT ANY API WITH CHAINLINK

Guides /
Verifiable randomness



BUILD, DEPLOY, AND SELL YOUR OWN DYNAMIC NFT

Read more about Chainlink


JOIN CHAINLINK’S GLOBAL OPEN-SOURCE COMMUNITY

Chainlink is open-source technology that is collectively developed by a large
community of developers, researchers, and users who share the goal of building
Chainlink into a public good for the benefit of the entire blockchain ecosystem.

Discord
Get involved
Twitter
Read the latest
YouTube
Watch videos
Telegram
Join discussion
GitHub
Build with us


GET INVOLVED THROUGH OUR GRANT PROGRAMS

The Chainlink Grant Program funds individuals and teams building a more
functional, accessible, and impactful smart contract economy.

Read more about our grant program

Connect your wallet


MetaMask


Coinbase


Trust Wallet


Binance Wallet


WalletConnect




CHAINLINK NEWS


SWIFT AND CHAINLINK EXPLORING HOW TO CONNECT FINANCIAL INSTITUTIONS TO
BLOCKCHAINS

The worldwide bank messaging system Swift has launched a set of experiments in
partnership with decentralized oracle network provider Chainlink to examine more
closely how major financial institutions might integrate with blockchains.


BLOOMBERG TV: SERGEY NAZAROV DISCUSSES AI AND BLOCKCHAIN TECHNOLOGY

Sergey Nazarov, Co-Founder of Chainlink, a Web3 services platform, says
blockchains are AI resistant because they are built to resist adversaries.


COINBASE CLOUD WILL RUN CHAINLINK NODE IN BID TO IMPROVE SMART CONTRACT SECURITY

Oracles like Chainlink are the way that DeFi protocols get access to data that
allow them to execute smart contracts.


SWIFT AND CHAINLINK EXPLORING HOW TO CONNECT FINANCIAL INSTITUTIONS TO
BLOCKCHAINS

The worldwide bank messaging system Swift has launched a set of experiments in
partnership with decentralized oracle network provider Chainlink to examine more
closely how major financial institutions might integrate with blockchains.


BLOOMBERG TV: SERGEY NAZAROV DISCUSSES AI AND BLOCKCHAIN TECHNOLOGY

Sergey Nazarov, Co-Founder of Chainlink, a Web3 services platform, says
blockchains are AI resistant because they are built to resist adversaries.


COINBASE CLOUD WILL RUN CHAINLINK NODE IN BID TO IMPROVE SMART CONTRACT SECURITY

Oracles like Chainlink are the way that DeFi protocols get access to data that
allow them to execute smart contracts.


CHAINLINK’S NEW PLATFORM LETS WEB3 PROJECTS CONNECT TO WEB 2.0 SYSTEMS LIKE AWS
AND META

Chainlink, a web3 services platform, is launching a self-service, serverless
platform to help developers connect their decentralized applications (dApps) or
smart contracts to any Web 2.0 API

Read more news


GET THE LATEST CHAINLINK CONTENT STRAIGHT TO YOUR INBOX.


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DEVELOPERS

 * Docs
 * Developer Resources
 * Developer Experts
   APPLY
 * Chainlink Hackathon
 * Bootcamp
 * Using Data Feeds
 * Use Randomness (VRF)
 * Using Chainlink Automation
 * Using Any API
 * Node operators


PRODUCTS

 * Market and Data Feeds
 * Functions
 * VRF
 * Automation
 * Proof of Reserve
 * Cross-Chain Bridging


USE CASES

 * Overview
 * Financial Services
 * DeFi
 * Gaming
 * NFT Collectibles
 * Climate Markets
 * Enterprise
 * Insurance


COMMUNITY

 * Community Overview
 * Grant Program
 * Events
 * Become an Advocate
 * Code of Conduct


RESOURCES

 * Whitepaper
 * Case Studies
 * Tech Talks
 * Blog
 * Economics 2.0
 * Staking
 * FAQs
 * What Is DeFi?
 * What Is an Oracle?
 * What Is a Smart Contract?
 * What Is an NFT?
 * What Is the Metaverse?
 * What Is Web3?


CHAINLINK

 * Ecosystem
 * Data Providers
 * Press
 * Team
 * Circulating supply
 * Careers
   WE ARE HIRING!
 * Brand Assets
 * Chainlink Badging


CONTACT

 * Talk to an expert
 * Security
 * Support
 * Custom Chainlinks
 * Press inquiries


SOCIAL

 * Twitter
 * YouTube
 * Discord
 * Telegram
 * WeChat
 * Reddit
 * Kakao

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