Open Farm
Open Farm is a real-world AgTech platform that uses Web3 as infrastructure — not as a game. It puts a verifiable on-chain identity and harvest record on every physical farm and every crop it produces, then lets consumers see that record by scanning a QR code. The product is a Sui Move stack (Farmer Passport, Season Log NFT), a Walrus-backed Harvest Story for tamper-evident media, an AI Copilot that signs its advisories on chain, and a public Consumer Trust Scan landing page. Built as a Devpost hackathon submission; the Web3 is intentionally invisible to normal shoppers.
/Features
- ✦Farmer Passport — on-chain farmer identity with a trust score, sustainability certifications, and Green Points earned per verified season
- ✦Season Log NFT + Walrus Harvest Story — a milestone timeline (planting, watering, harvest, delivery) for every crop, with photos and notes pinned to Walrus so the record cannot be silently edited
- ✦AI Copilot with signed advisories — disease detection, weather, irrigation, and climate risk, with each recommendation signed on chain via AISignerCap and protected against replay
- ✦Consumer Trust Scan — a public QR landing page that anyone can open; no wallet required, with zkLogin available for buyers who want to leave feedback or follow the farm
- ✦Escrow-gated milestones — harvest evidence unlocks payouts progressively, so the on-chain record and the off-chain settlement stay aligned
- ✦Web3 stays invisible — sponsored transactions and zkLogin mean a normal shopper never has to think about a wallet, a seed phrase, or gas
Food has a trust gap. Shoppers cannot verify who grew what, where, or how. Farmers have no portable digital identity and no way to prove the quality and sustainability of a specific harvest. Climate change is making outcomes less predictable every season. Open Farm turns each harvest into a signed, queryable record so trust is grounded in evidence — not in marketing copy.
/How it's built
- Move packages on Sui — Farmer Passport, Season Log NFT, AI advisory signer, and escrow module (object-centric design, UpgradeCap-governed)
- Storage — Walrus for tamper-evident harvest media and AI advisory payloads
- Auth & onboarding — zkLogin for farmers and consumers, sponsored transactions so the chain stays out of the way
- Frontend — Next.js, TailwindCSS, Framer Motion; a public read view for the QR scan flow
- AI — image recognition for crop health and climate analytics; outputs are signed before being written on chain
- Data layer — indexer and worker for farm events, provenance lookups, certifications, and AI advisory replays
/What's next
- Direct-market escrow so buyers can pay farmers against verified harvest milestones
- Regional climate intelligence maps built on top of signed advisories
- Export verification tool that reuses the Walrus-backed harvest record
- Cooperative-level Green Points so small farms can pool sustainability reputation
- Floor insurance primitive for farmers whose AI-flagged risk crosses a threshold
- Open APIs for retailers and food safety auditors to query the on-chain provenance directly
/Links
Original Idea
💡 Henry Nguyen
This project was built based on the original idea from this person.