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Gitcoin Virtual Hackathon

Harmony ONE Love - Round 2

May 25, 2021 - Aug 9, 2021

This hackathon event had ended at Aug. 9, 2021, 11:59 p.m., please check the ongoing hackathons.

Harmony ONE Love - Round 2

May 24 - July 24, 2021

Up to $300,000 in prizes

Go to the Harmony Discord Channel to connect with other hackers and with Harmony Devs.

What is Harmony?

The Future is One.

Harmony is a fully Ethereum-compatible blockchain that enables you to build scalable cross-chain applications and interoperate on any blockchain.

Our developers use Ethereum tooling such as Solidity and Ether.js. Users use Metamask to store and they use our bridge to swap Harmony and Ethereum assets. We achieve 2-second finality for fast transactions and support 1000 delegating stakers for secure shards.

What is ONE Love?

Harmony ONE Love is a hackathon inviting all participants to help build out the Harmony ecosystem. All the bounties are designed to grow, improve, and add value to the Harmony Network and benefit its developers, users, and the ecosystem. This is your chance to make your mark and participate.

Why Round 2?

Because 1 was not enough!


We are awarding up to $300,000....

Judges and Mentors

The Harmony Engineering leadership will be judging.

What are your submission requirements?

Read the specific bounty description. It's all there.

Do you have a grant program?

YES. Ultimately, we don't want a bunch of applications submitted that have no users and are dead-on-arrival. We want to continue to support a select handful of projects by fast-tracking them through our Grant program. One of the workshops will discuss our Grant process. More on that later. But, yes, we do have a Grant program and would love for all submissions to be sooooo gooooood that each one receives a Grant and further support after the hackathon.

Join the Harmony discord

Go to our Discord to connect with our developers: https://discord.gg/f98bmsuYe7

Join us in the Gitcoin Discord to discuss and shill your hacks and get support!

๐Ÿ‘‰ Discussions at #๐Ÿ––hacker-talk
๐Ÿ‘‰ Learn at #๐Ÿ“†workshops
๐Ÿ‘‰ Networking at #๐Ÿ˜บfind-teammates
๐Ÿ‘‰ Present at #๐ŸŒˆdemo-slam
๐Ÿ‘‰ Assistance at #๐Ÿšฉevents-support
๐Ÿ‘‰ Party at #๐Ÿ”Ÿgr10-hackathon
๐Ÿ‘‰ Jam at ๐Ÿ”Š๐Ÿฆœhacker-lounge
bounty explorer
Check out the Prizes

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.

express interest
Join the Hackathons Chat Workspace

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!

bounty explorer
Start Work via Gitcoin

When your team is formed please have one of your teammates navigate to each prize page you plan to compete for and click the โ€œStart Workโ€ button.

express interest

Build your cool ideas and make your vision come true with your team!

bounty explorer
Submit Work via Gitcoin

When your project is completed, submit your work by clicking the โ€œSubmit Workโ€ button on the prize page/