PulseAid is a decentralized charity platform on Arbitrum that uses zero-knowledge proofs for private institution verification, economic staking to prevent fraud, and smart contract escrow to secure donations. Institutions stake funds, raise money transparently, and submit proof of impact before receiving funds. Donors track every dollar through 6 transparency layers and see exactly where their money goes. With optimistic governance, automatic proof validation, and near-zero fees (~0.1%), PulseAid makes charity transparent, efficient, and unstoppable - ensuring donations reach those who need them most.
Privacy DeFi powered by FHE. Swap, transfer, earn yield with fully encrypted balances. Prove compliance cross-chain without revealing amounts. Your trades are invisible, your credit travels
Runera turns real effort into on-chain reputation
Orinx allows users to receive, hold, and send funds onchain while protecting their financial privacy.
A transparent, on-chain lottery and giveaway platform that lets creators and projects engage their fans with fair, verifiable, and fun community experiences.
TXExplain is a transaction explainer project that generates a fully detailed explanation of a transaction on Arbitrum One using the transaction hash
A private "offline-first" chat app with built-in Post-Quantum ethereum wallet. Sign transactions and broadcast them over bluetooth mesh network to find a peer connected online to relay it to a RPC.
Borrow WETH against tokenized equities on Robinhood Chain.
Multi-DEX LP Battle Arena on Arbitrum where liquidity providers compete head-to-head in time-bound PvP matches.
Doba is an onchain audio streaming service.
DeFi tokenized the asset side of finance but has no repo - the backbone of institutional funding. Repo Protocol brings title transfer and rehypothecation on-chain. The missing funding primitive.
Instead of turning the blockchain into a fully opaque privacy layer (which undermines the transparency that made blockchains valuable in the first place), we built StealthPay—an opt-in privacy primitive for users who don’t want their on-chain activity easily trackable, while still preserving the public verifiability of transactions. StealthPay is built on ERC-5564 (Stealth Addresses) and ERC-6538 (Stealth Meta-Address Registry), using the stealth “announcer” flow to enable users to send and receive funds on-chain via one-time stealth addresses rather than their public wallet address. For this hackathon, we shipped an MVP focused on core stealth transfers. Post-hackathon, we plan to expand with features like P2P flows, ENS-based routing (we hit an ENS resolver issue on Arbitrum during implementation, which we also want to support as a first-class feature), a message/inbox experience, and other privacy-forward UX improvements.
