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2023/07/07 → 2023/07/10, 07:00

MACI[Judge MACI Voting Round]Decreasing Frictions in DeFi | 0x, AWS, Family, Polygon |

  • -Signups

  • -MACI messages

  • 10,000 USDMatching pool

Tips for Voting

Welcome dear judges, to the Decreasing Frictions in DeFi Hackathon, powered by 0x project, Polygon, and other sponsors! We are delighted to have you here as DoraHacks, the platform supporting this hackathon and the ongoing MACI voting round. We would like to provide you with some helpful tips here:

  • Voting is easy: please click on the “cart icon” on the left side of the page and connect your wallet (via Polygon Matic Network). Then just add your favorite projects to the cart and give them your vote and love!

  • Whitelisted Addresses: In a MACI voting round, only addresses that have been whitelisted can be recognized by the smart contract and participate in the voting process. To ensure your vote is valid, please make sure to use the provided address for casting your vote. If you are unsure which address to use, you can refer to the following link: [Insert link here].

  • Voting Credits and Cost Calculation: Each voting address has been assigned 100 voice credits, which serve as voting tickets. In quadratic voting, the cost of casting votes grows quadratically as the number of votes increases. The cost of N votes from the same address will be N^2 voice credits. Here are a few examples to illustrate this:

    • 2 votes will cost 4 voice credits.
    • 5 votes will cost 25 voice credits.
    • 10 votes will cost 100 voice credits, which reaches the limit of the voice credits you possess.
  • On-chain Observability: It is important to note that the entire MACI voting process is unobservable on-chain, which is one of the intriguing aspects of the MACI mechanism itself. Once the voting period ends, the zero-knowledge proofs of MACI messages will be released and updated on the website. These proofs can be verified using snarkjs.

  • Contact and Enquiries: If you have any questions or need further assistance, please feel free to reach out to DoraHacks on Telegram via @dorahacksofficial. We are here to support you.

Thank you once again for joining us as judges in this event. Your participation is greatly appreciated!

Prize Pool

In short, there is a MACI Quadratic Funding prize pool totaling $10,000 plus three winning projects will receive $20,000 AWS credits, $30,000 worth of prizes.

  • 0x + Family + Polygon: $10,000 USD Quadratic Funding Pool

  • AWS 1st place: $10,000 in AWS credits

  • AWS 2nd place: $5,000 in AWS credits

  • AWS 3rd place: $5,000 in AWS credits

Judging Criteria

Sponsors and their judges reserve the right to give a partial prize or no prize if they do not feel any submission has met the challenge. The judges’ decisions are at their own discretion and final, binding and incontestable.

All submissions must fulfill the following requirements to be considered valid:

Submissions will be judged on the following criteria:

  • Technical Implementation

    • The code well-written, technically sound, and clean, and the project is technically complete

    • The use cases for the Swap API and ConnectKit make sense. The app is deployed on either Polygon Mainnet or Mumbai

  • Creativity

    • The idea solves an existing problem in a unique way
  • Design

    • Project has a delightful UI/UX and is easy to use
  • Adoption & Market

    • The project has potential to gain real-world traction

    • The project fills a market gap and has the potential to be adopted by a sizable and diverse audience

  • Overall Presentation

    • The project is clearly presented, including the demo video and documentation


  • William Doom - 0x, Senior Account Manager

  • Jessica Lin - 0x, Developer Advocate

  • Brad Feinstein - AWS, Global Business Development

  • Lochie Axon - Family, Design Engineer

  • Steph Orpilla - Polygon, Senior Developer Relations Engineer

  • Tony Olendo - Polygon, Lead Developer Relations Engineer

List of Partners


0x is developers’ one-stop shop to build financial products on crypto rails. 0x empowers hundreds of developers with essential web3 tools to enable faster trading, better prices and superior UX. Our suite of APIs has processed over 52 million transactions and $125B in volume from more than 6 million users trading on apps like Coinbase Wallet, Robinhood Wallet, Metamask, Zerion, Zapper, and more.

Founded in 2017 by Will Warren and Amir Bandeali, the 0x team is also the creator of the decentralized exchange Matcha. The team has made significant technical contributions, including the NFT token standard (ERC721) and has raised $109M up to Series B from leading investors as Pantera Capital, Greylock, Coinbase and Jump.

Website | Twitter | Discord


Polygon is the leading platform for Ethereum scaling and infrastructure development. Its growing suite of products offers developers easy access to all major scaling and infrastructure solutions: L2 solutions (ZK Rollups and Optimistic Rollups), sidechains, hybrid solutions, stand-alone and enterprise chains, data availability solutions, and more. Polygon’s scaling solutions have seen widespread adoption with 18000+ applications hosted, 1B+ total transactions processed, ~100M+ unique user addresses, and $5B+ in assets secured.

Website | Twitter | Reddit | Telegram | Discord

Amazon Web Services (AWS)

From Airbnb to Zocdoc, the world's top startups build on AWS. But they didn't do it alone. So whether you're looking for help solving a technical challenge, hiring the right engineers, or finalizing a fundraising round, we have all the resources you need to get started. There’s a reason more startups build on AWS than any other provider: we're here to help you succeed, from inception to IPO.

Website | Twitter


Friendly crypto software. Builder of ConnectKit a powerful React component library for connecting a wallet to your dApp. It supports the most popular connectors and chains, and provides a beautiful, seamless experience. Building Family Wallet, our goal is to create the wallet you'll enjoy using every day. That’s why we pour so much time and effort into making every last detail feel delightful.

Website | Twitter