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ZBay

ZBay

a Zero-Knowledge auction house

Built at LionHack 2023
🥈2nd Place

Created on 16th April 2023

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ZBay

ZBay

a Zero-Knowledge auction house

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The problem ZBay solves

Typical online auctions have poor integrity and don't ensure user privacy. A zero-knowledge "blind" auction means that users never reveal their bid prices and that auction houses can't call a fake bidder the winner.

Challenges I ran into

I dealt with a lot of issues when trying to use Aztec Noir's example repositories and integrating with their sdk. To overcome this, I ended up running proving/verification on an express backend by just running nargo commands. Another sufficient obstacle was creating a reliable deployment script for the contracts. With hardhat though, a lot of the fog was cleared up.

Tracks Applied (4)

LionHack

I competed in LionHack

DeFi Prizes

An auction house manages money, and in this case, a smart contract is used to verify the state of bids coming in

Aztec

Used Aztec's Noir language to count votes and prove winners of the auction are valid

🏆Fool's Gold

It's an easily exploitable and highly incomplete proof of concept. I think it's safe to say that any hackathon project w...Read More

Technologies used

Solidity

React

ethers.js

Express.js

Zero-Knowledge Proofs (ZKPs)

TypeScript

Tailwind CSS

Vite

Aztec Noir

Discussion

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