Chainlink is an open-source, generalized framework for building and connecting to decentralized oracle networks that give your smart contract access to secure and reliable data inputs and outputs. Through Chainlink, developers can connect their smart contracts to data providers, web APIs, enterprise systems, cloud providers, IoT devices, payment systems, other blockchains, and much more. The Chainlink Bounty Program is designed to encourage smart contract developers to evaluate the open-source code base and hunt for critical bugs.
This gives developers a chance to learn about how the most widely used oracle throughout DeFi works on the backend, enabling developers to become more familiar with Chainlink Nodes and Chainlink’s core smart contracts. Prizes will be paid out in LINK for any unique vulnerability, especially for anything that puts user funds at risk.
Please use this for general guidance. All final decisions are at the discretion of SmartContract. For reports affecting the node through an on-chain Chainlink request, we will provide a bonus.
Severity & Payment in LINK
Low - $2,000
Medium - $4,000
High - $8,000
Critical - $16,000
The Chainlink node is a part of a decentralized oracle network used to feed data to smart contracts. Job Specifications are added to the node through a REST API so that it knows what tasks to perform. The Chainlink node utilizes a websocket connection (for pubsub) to an Ethereum client (Geth or Parity) in order to watch for new blocks containing specific event logs. Once the external data is retrieved, the Chainlink node will sign the transaction, and broadcast it through the Ethereum client (the wallet is stored on the Chainlink node, not the Ethereum client). An overview of the architecture is available here.
The Chainlink node and its smart contracts are the core focus of this program. Issues related to a loss of funds for the node operator or requester will take the highest bounty reward. There are a few areas of this code base which are out-of-scope, see the Scope section at the bottom of this page for details.
We also have a project tracker where existing bugs are kept. Be sure to check there for issues that we already know about.
Solidity Smart Contracts
The smart contracts residing on the Github repository are in scope and will be awarded with bonuses if a vulnerability is found through creating Chainlink requests.
LINK Testnet Faucets
The faucets provide users with the ability to receive test LINK on test networks. Since they are test networks, we are more concerned with vulnerabilities which would cause a loss of service.
Chainlink Explorer allows requesters to view information about their request without requiring access to the Chainlink node themselves.
The application and source code driving the Decentralized Price Reference Data page.
Installation & Setup
We have guides available for how to get a Chainlink node running locally. See the links below for step-by-step walk-throughs. Feel free to reach out on our Discord for help.
Visit the Prize Explorer to check out the prizes posted by our hackathon sponsors. Click each prize to show important details, including the submission requirements, submission deadline, etc.
Chat with other hackers, ask sponsors and the Gitcoin team questions, find or create a team, and communicate real-time. Click here to join the party!.
When your team is formed please have one of your teammates navigate to each prize page you plan to compete for and click the “Start Work” button.
Build your cool ideas and make your vision come true with your team!
When your project is completed, submit your work by clicking the “Submit Work” button on the prize page/