Wholechain: Blockchain Traceability for Real Fishermen
The promise of blockchain traceability in seafood has always been straightforward: create an immutable record of where a fish came from, who caught it, and how it was handled — a record that anyone in the supply chain can verify and no one can manipulate.
The problem has been equally straightforward: most tools built to deliver that promise were designed for enterprise buyers, not independent fishermen with salt-stained hands and no IT department.
Wholechain is the exception.
Built for the Dock
Wholechain's core product is a mobile application that captures Critical Tracking Events (CTEs) — the GDST and GS1 EPCIS events that define a complete traceability record — directly at the point of harvest. A fisherman can log a harvest event in under two minutes:
That's it. No barcode scanners, no enterprise software, no EDI. The data goes to a blockchain ledger and immediately becomes shareable with any downstream partner who needs to verify it.
GS1 Compliance Without the Complexity
GS1 is the global standard for product identification — barcodes, QR codes, and EPCIS events are all GS1 infrastructure. GDST traceability requires GS1-compliant identifiers throughout the supply chain.
Implementing GS1 from scratch is a significant technical undertaking. Wholechain does the heavy lifting: it generates GS1-compliant GTINs (Global Trade Item Numbers) and GLNs (Global Location Numbers) for each producer and lot, and formats all recorded events as valid EPCIS messages.
From the fisherman's perspective, none of this is visible. They enter catch data; Wholechain handles the standards compliance.
FSMA 204 Readiness
The FDA's Food Traceability Final Rule (Section 204 of FSMA) requires covered facilities to maintain records of Key Data Elements for Critical Tracking Events for foods on the Food Traceability List — which includes salmon, ahi tuna, smoked fish, crustaceans, and bivalve mollusks.
Compliance deadline: January 2026.
Wholechain's harvest records satisfy the KDE requirements for the "first receiver" CTE — the starting point of the traceability chain. For small producers who are also direct marketers (selling to restaurants, at farmers markets, through CSF programs), Wholechain covers the entire first-mile record-keeping requirement.
The Network Effect
Traceability is most valuable when it spans multiple handoffs. A harvest record from a fisherman is useful. A harvest record that follows the lot through a processor, distributor, and retailer — each adding their own verified CTEs — is transformative.
Wholechain facilitates this through its partner network. When a processor receives a Wholechain-tracked lot, they can scan the QR code, verify the upstream harvest record, and append their own processing event. The chain grows with the product, and every participant can audit the whole history.
For buyers who want to make verified sustainability claims — and increasingly, they do — this chain of custody is the product. It's what justifies the premium and the label.
Getting Started
Wholechain offers onboarding support for independent harvesters and small processors. The basic tier is free for harvesters recording harvest events only. Fees apply for advanced analytics, processor accounts, and retail integration.
Pacific Cloud Seafood is a Wholechain integration partner. We can facilitate introductions and provide onboarding guidance for producers in our network.