Foxhound
Parametric drought insurance for 1.5B unbanked smallholder farmers — ZK-verified weather oracles, automatic XRP escrow payouts, no bank account or claims adjuster required.
Demo Video
Project Information
At a Glance
Parametric drought insurance for 1.5B unbanked smallholder farmers — ZK-verified weather oracles, automatic XRP escrow payouts, no bank account or claims adjuster required.
Description
FOXHOUND — Parametric Climate Insurance on XRPL 1.5 billion smallholder farmers feed 70% of the world's population. Less than 5% have access to any crop insurance. One drought can erase an entire year's income. POWERPOINT : https://github.com/R4iid3n/FoxHound/blob/main/FOXHOUND_Pitch_v2.pptx Traditional insurance requires credit history, a bank account, formal identity, and physical agents on the ground. Most African smallholder farmers have none of these. When drought hits, they have nothing.
FOXHOUND changes that.
What it does A farmer registers their farm with GPS coordinates and crop type. FOXHOUND mints an NFT insurance policy on XRPL, locks coverage XRP in an on-chain escrow, and monitors for drought in real time via QuickNode Streams.
When a drought is detected, FOXHOUND queries 5 independent weather oracles (two satellites, three atmospheric models). The aggregation runs inside a RISC Zero zkVM — producing a cryptographic proof that the drought determination was honest. The proof is committed to Ethereum Sepolia via the Boundless prover network, and the Sepolia TX hash is embedded in the XRPL escrow release memo.
The escrow releases automatically to the farmer's wallet. No human in the loop. No claims adjuster. No paperwork. Pure math.
What makes it special Trustless payouts — the farmer trusts math, not FOXHOUND. The ZK proof is the trigger. Permissionless access — any XRPL wallet can register. No KYC, no bank account, no credit score. Transparent pool — every premium, deposit, and payout is public and auditable on XRPL in real time. DeFi-native — investors earn AMM yield in calm seasons; capital covers payouts in drought seasons. Classic catastrophe bond model, now open to anyone. Impact NFTs — NGOs and climate funds deposit capital and receive immutable on-chain proof of contribution for ESG reporting. Who participates Role What they do 🌾 Farmer Registers farm, pays micro-premium, receives automatic payout if drought 🌍 Sponsor Pays 2 XRP to cover a stranger's farm — recorded on XRPL forever 📈 DeFi Investor Deposits capital, earns AMM yield + premium share 🏛 NGO / ESG Fund Deposits capital, receives Impact NFT as verifiable proof Scale potential 500 million smallholder farms exist globally. At 2 XRP per farm per season: 1 billion XRP in escrow transactions annually. Each farm generates 4–6 XRPL transactions per year (registration, premium, escrow create/finish). At 10 million farms: 40–60 million transactions per year on XRPL — from a demographic that has never touched financial infrastructure before.
Technical Details
Stack: Next.js 14 · xrpl.js · RISC Zero zkVM · Boundless prover network · QuickNode Streams + Functions + RPC · Ethereum Sepolia · Three.js
XRPL features: EscrowCreate (locks coverage), EscrowFinish (releases payout), NFTokenMint (insurance policy + Impact NFTs), Payment (premiums, sponsorship), TrustSet (RLUSD stablecoin line), SourceTag 2026040004 on all TXs.
Boundless (RISC Zero): 5-oracle weather aggregation runs inside a RISC-V zkVM guest program. A ProofRequest is EIP-712 signed and submitted to the Boundless market contract on Sepolia (0xc211b581…). The resulting Sepolia TX hash is embedded in the XRPL EscrowFinish memo — creating a cross-chain cryptographic link between the ZK proof and the payout.
QuickNode: Streams monitors the pool wallet in real time and triggers drought checks on incoming premium payments. Functions run serverless oracle aggregation. RPC handles all XRPL submissions.
Challenge solved: No single weather source can be trusted. A central server aggregatin
Team
2Islam ABOUBAKAROV
Iznaour Aboubakarov
Hackathon
HACK THE BLOCK 2026 Paris Blockchain Week XRPL Hackathon
Duration
Apr 11, 6:30 AM - Apr 12, 6:00 PM UTC