Chainlink

Chainlink is a decentralized oracle network that enables smart contracts to securely access off-chain data feeds, web APIs, and traditional bank payments. Chainlink is consistently selected as one of the top blockchain technologies by leading independent research firms such as Gartner. It is well known for providing highly secure and reliable oracles to both large enterprises (SWIFT) and leading smart contract development teams (Web3 Foundation, Wanchain, OpenLaw, Zeppelin, Accord and more).

Features

• Connect to any API
• Send payments anywhere

Prizes Offered

1. First place: 2,500 euros in LINK for the most compelling Chainlink prototype
2. Second place: 1,000 euros in LINK for the most innovative and creative Chainlink project
3. Third place: 500 euros in LINK, judges choice project

Getting Started

Add Chainlink to a Smart Contract

With NPM:

npm install chainlink --save
npm install chainlink --save

With Yarn:

yarn add chainlink
yarn add chainlink

Add to your smart contract:

import "chainlink/contracts/ChainlinkClient.sol";

If you are using ZeppelinOS, you can link it to your project by running:

zos link chainlink
zos link chainlink

Run a Chainlink node with Docker

The instructions are longer, read the documentation for more details.

Need Help

• The team are available on Discord to answer your technical questions: https://discordapp.com/invite/hEQQG5m
• Documentation: https://docs.chain.link
• Github: https://github.com/smartcontractkit/chainlink
• Whitepaper: https://link.smartcontract.com/whitepaper
• Collection of resources all things Chainlink https://github.com/JohannEid/awesome-chainlink
• Developer references (Hackaton project) https://github.com/JohannEid/awesome-chainlink#developer-resources