About the challenge

HackOnChain is where blockchain visionaries and builders unite to shape the decentralized future. It's the place where passion meets purpose.

You can join us in IRL in Warsaw, Poland, or hack online.

You'll have a chance to bring to life your vision, meet other builders and if you win, incubate your project with investors.

Don't worry if you don't have a team, we'll help you find one.

Don't worry if you're not a master in Solidity or Rust. There's a plenty of other things you can hack before deploying a smart contract. And we have mentors on board!

Get started

Join our Telegram group: https://t.me/+ZUoxuIzMmMs2MjRk


What to Build


Privacy (by Aleph Zero) - challenges coming soon.. [Rust Substrate Framework]

Analytics (by Cookie3) - challenges coming soon..

General (by Foundance) - challenges coming soon..

What to Submit

If submitting a smart contract then don't forget to keep the deployed version of the contract into GitHub repo.

Provide a URL to your code repository for judging and testing OR a link to a functional, deployed application.

Must have a video tutorial or a well-documented readme file/presentation to review.

Hackathon Sponsors


$28,000 in prizes
Cryptocurrency logo Prizes paid in cryptocurrency

Aleph Zero
Cryptocurrency logo

Prize Pool: 10.000$


Prize Pool: 6.000$

Cryptocurrency logo

Prize Pool: 3.000$

Cryptocurrency logo

Prize Pool: 5.000$

zkSync Era
Cryptocurrency logo

Prize Pool: 4.000$

Devpost Achievements

Submitting to this hackathon could earn you:


Adam Gągol

Adam Gągol
Co-Founder Aleph Zero

Mark Findlater

Mark Findlater
CTO Foundance

Wojciech Piechociński

Wojciech Piechociński
CTO Cookie3

Judging Criteria

  • Practicability
    - How useful is this submission in the real world? outside of the crypto community? - If the project were to be specifically targeted to the crypto community, how correctly targeted is it?
  • Innovation
    - How innovative is the project? - Is the project leveraging a new technology? - Is the project enabling a new type of solution to be created?
  • Technicality
    - How hard was the project to build? - How well does the project leverage technology?
  • Originality
    - How original is the project? - Is this something completely new or are there other existing instances of the same type of projection and/or execution?

Questions? Email the hackathon manager

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