MauriTrace — Blockchain traceability for Mauritania octopus
MauriTrace is the application developed by Mauritania Octopus Export to cryptographically timestamp every event in the octopus traceability chain — from sea capture through to shipment to Europe. Proofs are anchored on the Bitcoin network via the open protocol OpenTimestamps: they are immutable, publicly verifiable and cannot be tampered with retroactively.
Why paper documentation is no longer enough
Standard documentary certification in the fishing sector — health certificate, certificate of origin, EUR.1 — proves the existence of a lot at a given point in time and its declared compliance with EU standards. It does not prove that the information it contains faithfully reflects the reality on the ground.
A paper certificate can be issued with inaccurate data on the fishing zone, capture date or processing plant. Cold chain continuity can be declared without being genuinely verified. Lot numbers can be reassigned.
This trust deficit is structural in the Mauritanian octopus market. MauriTrace was designed to solve it with technology that no one had previously applied to this supply chain.
How MauriTrace works
1. Field event recording
MauriTrace is an Android application used directly by operators at every link in the chain: vessel captain, port agent, plant manager, logistics coordinator. Each event is recorded at the time it occurs (capture, landing, weighing, freezing, container loading).
Data recorded includes: vessel, FAO fishing zone, date and time, weight, lot number, operator, temperature conditions.
2. Cryptographic fingerprint (hash) generation
For each event, MauriTrace generates a SHA-256 hash of all the recorded data. This hash is a unique mathematical fingerprint: if even one character of the data is subsequently modified, the hash will be different — making any tampering detectable.
The hash contains no sensitive personal or commercial data: it is a fingerprint, not the data itself.
3. Anchoring on Bitcoin via OpenTimestamps
The hash is submitted to the OpenTimestamps protocol, an open and public timestamping standard. OpenTimestamps aggregates thousands of hashes and anchors them in a Bitcoin transaction via the OP_RETURN field of the blockchain.
Once the transaction is confirmed (approximately 10 minutes), the proof of existence of this hash at this precise date is immutable: no entity — including Mauritania Octopus Export — can modify or delete it retroactively.
4. Independent public verification by any third party
Any buyer, auditor or regulatory authority can independently verify that a traceability event existed at a given date, without having to trust Mauritania Octopus Export or any certified third party.
Verification is done by recalculating the hash of the data and comparing it with the OpenTimestamps proof — a process that requires access to the public Bitcoin blockchain, accessible to everyone.
What MauriTrace concretely delivers to a B2B buyer
- Non-manipulable prior proof: capture, landing and freezing data for the lot were recorded before shipment and cannot have been modified afterwards to match a certificate.
- Independent verifiability: your quality team or auditor can verify the proofs without going through us. The Bitcoin blockchain is public and permanent.
- Beyond EC 1224/2009: our lots satisfy standard regulatory requirements — MauriTrace adds a cryptographic layer that goes well beyond what the regulation requires.
- Supplier differentiator: in a sector where trust in documents is chronically fragile, a cryptographic proof is a strong signal to your own customers, distributors or auditors.
- No trusted third party required: unlike traditional certifications that rely on a certifying body, MauriTrace relies on mathematics and Bitcoin's decentralisation.
Timestamped events in the MauriTrace chain
Sea capture
Authorised vessel, licence number, FAO 34 fishing zone, date and time, fishing method, captain. Recorded by the captain at landing via the Android app.
Landing and port inspection
Landing port (Nouadhibou / Nouakchott), official weighing, sanitary inspection, primary lot number, port agent. Recorded at the time of inspection.
Processing in approved plant
Plant approval number, production date, grade (T1–T7), format (IQF/Block), freezing temperature, shelf life. Recorded by the production manager.
Container loading and shipment
Container number, seal number, departure temperature, Bill of Lading, destination port. Recorded by the logistics coordinator at the time of loading.
MauriTrace in the context of EU regulatory traceability
Regulation EC 1224/2009 requires the traceability of fishery products imported into the European Union: vessel identification, FAO zone, fishing method, processing plant, production date and lot number. This information must be documented and accessible throughout the commercial chain.
Our lots fully satisfy these requirements through standard export documents (health certificate, packing list, EUR.1). MauriTrace does not replace these documents — it complements them by adding a cryptographic proof layer that makes the information independently verifiable, beyond what the regulation requires.
For buyers whose own customers (retailers, restaurant chains, food processors) are beginning to integrate enhanced traceability requirements into their specifications, MauriTrace represents a concrete advance on current industry practice.
Frequently asked questions about MauriTrace
Is MauriTrace an official certification?
No. MauriTrace is not an official certification — it is a cryptographic timestamping system. It does not replace the health certificate, EUR.1 or other official EU-model documents required for import. It adds an independent layer of verifiable proof on top of standard documentation, based on mathematics and the Bitcoin blockchain rather than a certifying body.
How can an auditor or buyer independently verify a MauriTrace proof?
Verification requires two elements: the original event data (which we provide in the traceability file) and the OpenTimestamps proof file (.ots format). Any person with access to the OpenTimestamps open-source tool can recalculate the SHA-256 hash of the data and verify that it matches the proof anchored on the Bitcoin blockchain. The Bitcoin blockchain is public, permanent and accessible without permission to anyone worldwide.
Why use Bitcoin rather than a private blockchain?
A private or consortium blockchain is controlled by a company or a group of companies — which means timestamps can potentially be retroactively altered by those who control the chain. Bitcoin is a public, decentralised and censorship-resistant network: no entity controls it. A proof anchored on Bitcoin cannot be altered or deleted by anyone, including Mauritania Octopus Export. This is the only configuration that provides genuine mathematical immutability.
Does MauriTrace cover all lots?
MauriTrace is deployed on our current export operations. Every lot shipped with MauriTrace coverage is accompanied by a traceability file with the corresponding OpenTimestamps proofs. For buyers who want systematic MauriTrace coverage for all their orders, this can be confirmed at the order stage.
What is OpenTimestamps and why is it trustworthy?
OpenTimestamps is an open-source project created by Bitcoin developer Peter Todd. It is a public, auditable and free standard for cryptographic timestamping via Bitcoin. Its source code is fully open on GitHub. It has been used since 2016 for legal timestamping, notarisation and data integrity applications. It does not require trust in any intermediary: the only assumption is that the Bitcoin blockchain continues to function — which is the most robust computational assumption currently available.