First-mile traceability and certification: chain of custody, lots and mass balance

Why does traceability start at the first mile?

Most traceability systems start at the warehouse or the port. By then, product from hundreds or thousands of smallholders has already been bulked together, and the link to individual farms is lost. Yet that link is exactly what regulation and customers now ask for.

First-mile traceability means linking product to the farmer and plot that produced it, and following it through the first steps: farm gate, collection point, cooperative and first buyer. Under the EUDR, a due diligence statement has to include the geolocation of the plots behind the product, which makes this link essential.

How does Farmer1st build the chain of custody?

1. At the farm gate. Each delivery is recorded at the buying point, offline if needed, against a verified farmer and plot, with weight, quality and date.
2. Through collection. Movements between collection points, warehouses and cooperatives are recorded, with the plots carried along.
3. Into lots. Deliveries are aggregated into lots; lots can be split, merged or transformed while keeping the link to their plots.
4. To the shipment. Each shipment carries the full list of plots and farmers behind it.

Records come from Farmer1st’s own apps or from the systems you already use, through data integration.

Segregation or mass balance: which model fits?

Farmer1st supports both, and can apply different models at different steps. For EUDR, a declared lot only ever contains product from verified plots, so every plot listed in the DDS actually supplied it. Balances reconcile continuously, and any lot that would exceed its verified input is flagged.

How do you catch volumes that don’t add up?

Each farmer’s deliveries are compared with what their plots can plausibly produce. Volumes that exceed that capacity, or patterns that suggest the same harvest was sold twice, are flagged by fraud detection, which works across buyers without exposing one buyer’s data to another. This protects the integrity of each lot and of every declaration built on it.

How does it prepare certification audits?

For standards such as Rainforest Alliance and Fairtrade, auditors look for consistent records: who the members are, where their plots are, what training they received, what they delivered and how volumes moved. Farmer1st keeps these records in one place, versioned and never overwritten, so audit preparation means exporting what is already there instead of assembling files by hand.

How does traceability feed EUDR compliance?

Because each lot keeps the list of plots behind it, the DDS for a shipment is built from exactly those plots, with the geolocation and deforestation results provided by geo and polygons. EUDR compliance then produces the due diligence report and submits the DDS. For the regulatory background, see our EUDR guide.

What is a farmer-attested consumer QR code?

A QR code on the final product can lead to origin information confirmed by the farmers who grew it: the region, the cooperative, the practices used, perhaps a message from the farmers. Farmers choose what is shown. It turns traceability data into a story that is verified at the source.

Farmer1st is the first-mile infrastructure built around farmers: a farmer-controlled network where companies, governments and organisations collect, verify and share origin data, and build the services they need on top of it.

Can the chain of custody follow our own flows?

Yes. Lot rules, transformation ratios and custody models follow the way your supply chain works. Modules switch on as you need them, and anything specific, we prototype with you in the Nursery.