Welcome to the database where you can see all previous projects from our past hackathons.
Explainable launch intelligence for Robinhood Chain.
Meme-World Assets (MWA) Protocol — RWA-backed token launchpad on Robinhood Chain . Creators lock tokenized stocks as collateral, issue MEME tokens with an optional 3/5/10% buyback premium, and automatically redeem collateral after the lock expires. Live on testnet with 3 deployed contracts. https://mafsc.github.io/mwa/
Decentralized Fact-Checking & Misinformation Detection Subnet
# Sakartvelo Exchange **A working demonstration that privatization can have a real primary market — built, deployed, and verified on Arbitrum One.** ## The problem Every large-scale privatization has failed the same way, twice. Sell state assets for cash, and only people who already have capital can buy in. Give them away as free vouchers instead — the historical "fairer" alternative — and ownership still ends up right back with whoever had capital, just a few months later, because the vouchers were tradable from day one and got sold cheap under financial pressure. Crypto has quietly reproduced the same failure at industry scale: most tokens are tradable the instant they're minted, with no real primary-market phase standing between issuance and speculation. That's not a side effect of bad token design — it's a structural gap. Traditional finance solves this with a real separation between primary allocation and secondary trading. Crypto, and historical privatization alike, usually don't have one. ## What we built A three-phase mechanism — **monetization, privatization, capitalization** — that reconstructs that missing separation, live on-chain: - **Monetization**: citizens receive an equal, one-time allocation of a currency that cannot be resold or gifted — only spent bidding on real assets. - **Privatization**: that currency competes in a proportional, multi-round auction. Unfilled bids carry forward automatically; settlement cost is mathematically bounded regardless of how large a company's total share count is. - **Capitalization**: the currency's transfer restriction lifts — permanently, for everyone — only once real, on-chain progress (a company crossing 51% sold) proves privatization is genuinely underway. Not a calendar date. Not an announcement. A verifiable fact. ## What's actually live, right now Ten companies. Real auctions. Real governance — shareholders elect term-limited governors with rotating operating keys, not standing control. A real treasury layer with sealed-bid asset sales and shareholder-voted vendor payments. All five contracts verified on Arbiscan, Sourcify, and Blockscout — anyone can read the exact logic running this, not just take our word for it. ## Why it's worth building on Arbitrum Because the interesting part of this project isn't the idea — plenty of people have written about crypto's missing primary market. The interesting part is what happens when you actually try to build it: we found and fixed a real unbounded-gas vulnerability in our own settlement logic before it could lock anyone's funds, documented it publicly, and formalized the fix as a provable bound. That's the difference between a whitepaper and a working system — and Arbitrum's low, predictable gas costs are what made iterating on that fix fast enough to actually catch it. ## What's honest about where this stands This is a fictional simulation, not a real financial product — every contract says so explicitly. We have no proof-of-personhood, no formal game-theoretic proof of the auction's incentive properties, and no professional security audit yet. We say this plainly because a project that hides its limitations is less trustworthy than one that names them — and because closing exactly these gaps is what we're building toward next.
Use staked L1 tokens as collateral to borrow USDC.
JUJING is an independent market intelligence and verification layer for tokenized stocks. Starting with Robinhood Stock Tokens on Robinhood Chain, it connects exact token identity, issuer-defined rights, onchain controls and source evidence with reference pricing, liquidity, freshness and execution context. This helps wallets, trading venues and protocols understand which instrument they are supporting and retain a reproducible verification record.
RNA therapeutics will define the next decade of medicine, turning RNA inverse-folding into a continuously contested public market.
Kipio is a decentralized vault for permanent, private ownership of personal content, built to give people lasting control over their digital memories.
INSTANT WIN — The distribution layer for tokenized assets The trillion-dollar problem nobody solved Tokenized assets are coming to Arbitrum at scale. Robinhood Chain will issue them. Institutions will mint them. And then somebody has to put them in the hands of real people — millions of them, most of whom have never installed a wallet. Right now, that layer does not exist. Every distribution tool today forces a choice: verifiable but crypto-only, or accessible but unprovable. A brand giving away 10,000 tokens picks a spreadsheet and a promise. A protocol doing an airdrop reaches the same 200,000 wallets everyone else reaches. The 3 billion people outside crypto stay outside. What we built INSTANT WIN is the rail between them. A campaign holds its prize in a verified contract on Arbitrum One. Winners are drawn by Chainlink VRF — nobody picks, not even us. Prizes are claimed straight from the contract, and claims can never be blocked. Every entry, every draw, every payout is on Arbiscan. And the entrant? They use their email. No wallet, no extension, no gas, nothing to install. Under the hood each person gets a real wallet, created invisibly, signing their own on-chain entry. This is the part everyone claims and almost nobody does honestly: no relayer stuffing entries in bulk. The contract requires each entry to come from its own participant, so the proof holds. Web2 in, proof out. One verified person, one entry — phone verification, zero cost per participant, no bot farms taking the prize. Live on Arbitrum One today Not a demo. Not a testnet. Deployed, verified, running. Lottery — 30-minute rounds, VRF draws, pull-payment prizes. Automated end-to-end by Chainlink CRE. Event Center — anyone runs a campaign. Prize modules for ERC-20, ERC-721 and ERC-1155, all deployed and verified, so a campaign can distribute any tokenized asset — including real-world assets issued on Arbitrum and Robinhood Chain. Four paths, one barrier — creators and entrants each choose wallet or no wallet. Phone verification is mandatory in all four. The platform never holds a prize it cannot prove it delivered. Core: 0xEA91eb545FBB7e82f0085ff30555ed06C1Baf739 Lottery: 0xB1935f2d6D0A8dEb7cfB074b17f179fd842d324a Don't believe us. Go check. Where this goes Physical prizes as NFT vouchers — a brand uploads a product, the platform mints the voucher, the winner redeems it in-store. Creator identity signed on-chain, so a winner denied a prize holds a contract, not a screenshot. A creator score built on confirmed deliveries — the one asset in this space that capital cannot buy and only time can build. Then the regulated entity, then licensing, then any platform instrument. In that order, never before it. Why now The rails for tokenized assets are being laid this year. The distribution layer is not. We built it, it runs, and it is the only one where the person receiving the asset does not need to know what a wallet is. Stack Solidity 0.8.21 / Foundry · Chainlink VRF v2.5 · Chainlink CRE · React + wagmi/viem · Vercel serverless · Supabase · Resend Four independent security audits. 425 tests. Migrations executed against a real Postgres before touching production. The proof is in the repo — as it should be.
The competitive market for verified query plans.
Physical-layer identity verification for Web3 — kernel-level bot detection via eBPF/XDP and cross-chain temporal correlation across 12 L2 networks.
Hood Relief is a community relief pool. Someone in trouble a medical bill, a stolen wallet, a lost job, a house fire files a case describing what happened and what they need. The case opens for a five-day community vote. One wallet, one vote. If it clears quorum, funds are released from the shared pool and the payout is written to a public ledger with its transaction hash. No single case can request more than a set percentage of the pool balance. There is a second path that skips all of that: a direct campaign, where the creator names their own payout address and supporters send money straight to it. Hood Relief never holds that money and never releases it. The payout address locks the moment the first donation confirms, so nobody can build an audience on one address and swap in another. The project's home chain is Robinhood Chain, an Arbitrum Orbit L2. Donations are also accepted and verified on Arbitrum One, Ethereum, Base, Optimism, Polygon, BNB Chain, Avalanche, Solana and Bitcoin every transfer is proven server-side against the chain before it counts toward the pool. Members without a wallet sign in with email or Google and get an embedded wallet, because the people this is for are usually not the people who already own a hardware wallet. It is live at hoodrelief.com.
