FarmTrace is a blockchain-based supply chain traceability platform designed to help agricultural producers comply with the EU Deforestation Regulation (EUDR). The system enables farmers, cooperatives, exporters, and regulators to interact through tamper-proof, plot-level, verifiable records — ensuring agricultural commodities are deforestation-free and fully traceable from origin to export.

Built on Solana, FarmTrace leverages Program Derived Accounts (PDAs), interactive mapping tools, satellite-based deforestation monitoring, and automated Due Diligence Statement generation to make compliance simple, scalable, and fraud-resistant.

• Draw polygon boundaries on an interactive map.
• GeoJSON coordinates are hashed using SHA-256.
• Farm Plot PDAs store immutable identifiers and metadata.

• Backend analysis uses satellite imagery and land-cover models.
• LLMs evaluate deforestation risk.
• Signed verification proofs are submitted on-chain.
• Only verified plots can create harvest batches.

• Each harvest batch is linked to a specific plot.
• PDAs track:
  • Commodity type
  • Weight
  • Status (Harvested → Processing → InTransit → Delivered)
  • Timestamps & supply chain events
• Ensures an unbreakable chain of custody.

• Aggregates geolocation data, batch history, verification results, and compliance scores.
• Generates importer-ready DDS files.
• Provides transparent, tamper-proof compliance evidence.

• Enforces EUDR eligibility rules at protocol level.
• $0.00001 transaction fees enable global accessibility.
• Extremely high throughput supports large-scale agricultural networks.

The EU Deforestation Regulation requires:

1. Plot-level traceability with polygon coordinates.
2. Proof of no deforestation after December 31, 2020.
3. A tamper-proof chain of custody across the entire supply chain.
4. A Due Diligence Statement (DDS) for every shipment.

Centralized databases struggle because they:

• Cannot provide cryptographic trust guarantees.
• Are easy to tamper with.
• Require middlemen trust across multiple countries.
• Lack verifiable auditability.
• Introduce single points of failure.

Blockchain solves these issues with immutability, transparency, and decentralized trust — but only if it's affordable and scalable.

FarmTrace uses a hybrid on-chain + off-chain model:

Three primary PDA types:

Stores:

• Polygon coordinate hash
• Plot metadata (ID, farmer, location)
• Compliance score
• Links to satellite verification results

Stores:

• Parent plot
• Commodity data
• Weight & timestamps
• Current supply chain status
• Destination & next handler

Stores:

• Deforestation analysis results
• LLM assessment summaries
• Verification timestamps
• Backend signatures

Smart contracts enforce:

• Only verified plots can register harvest batches.
• Valid transitions through the supply chain (Harvested → Delivered).
• Regulatory business rules defined by EUDR.

• Monitors plots for land-cover changes.
• Uses Google Earth Engine, Sentinel-2, Landsat.
• LLM interprets pixel changes and vegetation indices.
• Signs results and commits them on-chain via record_satellite_verification.

• Interactive polygon drawing tool (GeoJSON-based).
• Wallet authentication (Phantom/Solflare).
• Dashboard for:
  • Plot registration
  • Batch creation
  • Supply chain updates
  • DDS generation

Coordinates → SHA256 → submission on-chain.

• Anchor Framework
• Program Derived Accounts (PDAs)
• Anchor Events
• Cross-Program Invocations (CPI)
• IDL-based frontend integration

Ethereum gas fees ($5–$50) are impossible for smallholder farmers earning $2–$5/day.
Solana fees: $0.00001
→ Register 100 batches for ~$0.01.

Mobile wallets make onboarding seamless.

Agricultural supply chains generate huge transaction bursts during harvest season.
Solana’s 50,000+ TPS handles it effortlessly.