Key metricsKey metrics
Asset TypeAsset TypeAPI
StructureStructureFor Profit Company
Project StatusProject StatusWorking Product
Funds raisedFunds raised32M
CountryCountryUnited States
Key personKey personSergey Nazarov

ChainLink (LINK) Information{coin_name} ({symbol}) Information

Your smart contracts connected to real world data, events and payments.

The Chainlink network aims to provide reliable tamper-proof inputs and outputs for complex smart contracts on any blockchain. Chainlink is first being implemented on Ethereum and is currently only available on the testnet. A Chainlink is a decentralized oracle which can be used to provide external data to Ethereum smart contracts. Connecting external data allows a contract to have knowledge of real-world external events, APIs, and other blockchains.

Team OverviewTeam Overview

Sergey Nazarov

Sergey began his career building peer-to-peer marketplaces, going on to the investment team at FirstMark Capital. He joined the cryptocurrency revolution in 2011, and believes it has the ability to change the way societies distribute wealth, enforce contracts, and share critical information with their citizens.

Steve Ellis

Steve was previously a Software Engineer and Team Lead at Pivotal Labs, where he worked on securing sensitive HIPAA compliant data and building scaleable payments automation software. He's a big fan of Ethereum, Bitcoin and the decentralized future we're all working towards.

Ari Juels
Technical Advisor

Ari is a Professor of Computer Science in the Jacobs Institute at Cornell Tech and a Co-Director of IC3 (Initiative for Cryptocurrencies and Contracts). He was previously the Chief Scientist of RSA.

Andrew Miller
Technical Advisor

Andrew is a well known leader in decentralized consensus research and secure blockchain infrastructure. He's an Associate Professor of Computer Science at the University of Illinois and an advisor to both Zcash and Tezos.


Chainlink Ltd SEZC

Strathvale House, 90 North Church Street, George Town, KY1-1102, Grand Cayman

Questions and AnswersQuestions and Answers

What is the LINK token used for?
The LINK token is an ERC677 token that inherits functionality from the ERC20 token standard and allows token transfers to contain a data payload. It is used to pay node operators for retrieving data for smart contracts and also for deposits placed by node operators as required by contract creators.
Will there be a token swap?
The Chainlink network’s main net will operate on top of the Ethereum main net. As additional smart contract platforms gain native support by the Chainlink network in the future, details will be released about how to transfer LINK to that blockchain.
How much LINK to run a node?
You will be able to run a Chainlink node with 0 LINK, however, you will not be able to participate in requests that require a deposit until you’ve earned some LINK first. Requesters may specify an amount of LINK that all nodes must deposit as a penalty fee in case the node doesn’t fulfill the request. However, since penalty fees are optional, not all requests will require it.
How do I set up a Chainlink node?
You can set up a node to run on a test network or a local blockchain right now. The node will not be able to participate in fulfilling shared requests yet, but will in the near future. However, it can be used to fulfill its own requests and you can add external adapters to it for extending its functionality.
What are the hardware requirements for a Chainlink node?
The hardware requirements of the Chainlink node are very minimal to start with. For example, Chainlink can be compiled and effectively ran on a Raspberry Pi. You may need to add resources only if your node receives extremely frequent usage. However, connectivity to an Ethereum client is required for communication with the blockchain. Hardware requirements of Ethereum clients may change over time.
How do I request data from Chainlink?
We are currently running a node on the Ropsten test network and can fulfill requests from any open API endpoint. We have a guide available to show how to create and deploy a contract on Ropsten. That contract may be modified to fit your specific use-case. Feel free to ask questions in the community about how to make changes to the contract.
How do I select Chainlink nodes for my requests?
There will be a listing service provided by us, and the ability for additional listing services created by 3rd parties, that will display information on nodes. For now, we have a page with our Addresses and Job Specs and available Chainlinks. You can use the chainlinkRequestFrom method to create requests to multiple oracles.
Do I need to have access to APIs in order to provide data?
The Chainlink node can fulfill requests from open (unauthenticated) APIs out-of-the-box, without the need for External Adapters. For these requests, requesters would supply the URL to the open API they wish each node to retrieve, and the Chainlink node will use its core adapters to fulfill the request.
How many nodes are currently running?
Under the current architecture, with a node operator using their own oracle contract on-chain in order to fulfill requests, it would only be realistically possible to see the number of active nodes by utilizing an off-chain listing service. With the service agreement protocol, which will utilize the coordinator contract, it should be possible to see the history of nodes that have registered with it on-chain. However, a listing service would provide additional capabilities that aren't available on-chain, like displaying information about the nodes which the node operator has provided. The general nodes ran by the Chainlink team are available on the Addresses and Job Specs page, and specialized Chainlinks are available as well.
Can Chainlink be used to connect to <some blockchain/API>?
Yes, by using external adapters. External adapters allow for connectivity to any resource as long as the adapter conforms to a minimal JSON specification for communicating to and from the Chainlink node.


Key metricsKey metrics
ProofProofProof of work
Token InformationToken Information
ChainLink is a token on the ETH platform using the ERC-20 standard. The address of the token contract is 0x514910771AF9Ca656af840dff83E8264EcF986CA.

Source Code Repositories

smartcontractkit/chainlink 475 Stars 31 Contributers 16 Open Issues

node of the decentralized oracle network, bridging on and off-chain computation


Tradeable CoinsTradeable Coins
364,409,568 (36% of total) ({tradeable_of_total} of total)

Rich List Addresses holding the largest balances

AddressAddress AmountAmount NameName
0x98c63b7b319dfbdf3d811530f2ab9dfe4983af9d 350,000,011.5555
0x4e9ce36e442e55ecd9025b9a6e0d88485d628a67 104,390,871.8821 Binance 6
0x75398564ce69b7498da10a11ab06fd8ff549001c 50,000,000.7777
0x5560d001f977df5e49ead7ab0bdd437c4ee3a99e 50,000,000
0xe0362f7445e3203a496f6f8b3d51cbb413b69be2 50,000,000
0xdad22a85ef8310ef582b70e4051e543f3153e11f 50,000,000
0xbe6977e08d4479c0a6777539ae0e8fa27be4e9d6 50,000,000
0xf37c348b7d19b17b29cd5cfa64cfa48e2d6eb8db 35,590,421.01
0x89526ae6a268be75cd13f3330a58373cd2a87a12 9,679,256.6
0x3f5ce5fbfe3e9af3971dd833d26ba9b5c936f0be 4,719,212.0734 Binance 1
0x17125b59ac51cee029e4bd78d7f5947d1ea49bb2 2,597,411.383
0x0e0662913bf5c67cbca93b16c4d59beea56c6c34 2,512,859.1483
0xd072a5d8f322dd59db173603fbb6cbb61f3f3d28 2,365,051.4
0x2ee799fe66e7a1e783a5fb438669666022d88f07 2,301,235.316
0xfa4b5be3f2f84f56703c42eb22142744e95a2c58 2,169,555.7568 Huobi 11
0xc54bd1f466f2f4f36de59f4024e86885386d6f1b 2,000,000
0xd714129a5c366b108482972766c125348ecbff60 2,000,000
0x155320a59fc374187d17266b51e5e6b33e050d67 1,889,500
0xd551234ae421e3bcba99a0da6d736074f22192ff 1,789,214.1742 Binance 2
0x0681d8db095565fe8a346fa0277bffde9c0edbbf 1,782,012.0066 Binance 4

Exchange Markets

ExchangeExchange MarketMarket PricePrice DiffDiff Volume 24hVolume 24h SpreadSpread Spread $1kSpread $1k
Binance LINK/BTC $1.8467 -0.03% $20,123,496 0.1% 0.27%
Binance LINK/USDT $1.8481 0.04% $7,372,076 0.15% 0.31%
Binance LINK/ETH $1.8528 0.3% $1,514,760 0.47% 0.68%
Binance LINK/USDC $1.8468 -0.03% $141,435 0.83% 0.91%
Binance LINK/TUSD $1.8374 -0.54% $107,822 0.72% 1.1% LINK/USDT $1.8419 -0.29% $78,195 0.86% 1.7%
Binance LINK/PAX $1.8388 -0.46% $18,713 1% 1.2% LINK/ETH $1.8392 -0.44% $7,375.31 1.3% 2.4%

Latest ChainLink NewsLatest ChainLink News

Chainlink - Official Channel on Twitter

General-purpose decentralized database @VSYSCoin selects Chainlink oracles to power its off-chain connections!

ChainLink on Twitter ReadRead 

Chainlink - Official Channel on Twitter

Congratulations @AriJuels on being named the Jacob Technion-Cornell Institute's Weill Family Foundation and Joan and Sanford I. Weill Professor, the institute's first endowed professorship! We're honored to have Professor Juels as an incredible advisor.…

ChainLink on Twitter ReadRead 

Chainlink - Official Channel on Twitter

Enterprise #blockchain company @Dapps_inc integrates with Chainlink to enable Salesforce users accurate, real-time data feeds for smart contract management. #smartcontracts

ChainLink on Twitter ReadRead 

Chainlink - Official Channel on Twitter

Kaiko is now live as an official Chainlink node operator and data provider! @Kaikodata will provide trade and aggregated cryptocurrency market data to #chainlink's decentralized oracle network.

ChainLink on Twitter ReadRead 

Smart Contract Chainlink Startup Tapped By Google As Blockchain Partner

Google has tapped a startup token project, Chainlink , as an official Cloud Partner and the relationship suggests a deep and detailed interest in blockchain technology by the Mountain View giant. The partnership, described in a detail Google Cloud blog post , aims to place BigQuery data on the blockchain using a...

Coindesk ReadRead 

Chainlink - Official Channel on Twitter

We're thrilled to share that Google is one of the great companies integrating #Chainlink into their approach to smart contract adoption. Here's how @GCPcloud users can use Chainlink to connect to BigQuery, one of Google's most popular cloud services.

ChainLink on Twitter ReadRead 

Chainlink - Official Channel on Twitter

#Smartcontracts have not moved beyond #tokenization. We explore how decentralized oracles can change this by creating a secure connection between smart contracts and various off-chain resources. #blockchains

ChainLink on Twitter ReadRead 

Chainlink - Official Channel on Twitter

By integrating with Chainlink, @maticnetwork gives dApp developers on its network access to decentralized oracles that connect their smart contracts with external data

ChainLink on Twitter ReadRead 

Chainlink - Official Channel on Twitter

Excited that @go_chain is joining the growing group of projects using Chainlink to connect real-word data into their blockchains.

ChainLink on Twitter ReadRead 

Chainlink - Official Channel on Twitter

Stablecoin and digital payment app @reserveprotocol to use Chainlink for price data to bring currency stability to countries with high inflation.

ChainLink on Twitter ReadRead 
This information is provided AS IS and is not adviceThis information is provided AS IS and is not advice. May contain errors or omissions. Please always do your own research before trading.May contain errors or omissions. Please always do your own research before trading.