Blockchain and Traceability in the Sea Cucumber Supply Chain: What the Technology Can and Cannot Do

There is a pattern that repeats itself whenever a new technology intersects with a supply chain problem that industry has struggled to solve for decades. The technology arrives with significant promise, attracts genuine investment, generates a body of research, and begins to find implementation. Then, as implementation proceeds, the gap between what the technology promised and what it delivers in practice becomes visible. The gap is not a failure of the technology. It is a failure of the assumption that technology alone can solve problems that are fundamentally about human behavior, institutional relationships, and economic incentives.

Blockchain is at this juncture in the seafood supply chain, and sea cucumber is one of the sectors where the stakes of getting traceability right are highest. Understanding what blockchain actually does, where it genuinely helps, and where the persistent vulnerabilities remain is essential for any organization evaluating digital traceability as part of its supply chain risk management.

What Blockchain Is, and What It Does

Blockchain is a distributed ledger technology. At its core, it maintains a record of transactions or data entries across a network of participants in a way that makes alteration of historical records computationally prohibitive. Each new entry is cryptographically linked to the one before it, creating a chain of records that cannot be silently changed without disrupting the entire subsequent chain.

Blockchain technology can potentially enhance transparency, traceability, and trustworthiness within the seafood supply chain, effectively addressing seafood fraud and safety issues. A systematic review of 99 relevant academic publications from 2018 to 2025 examined blockchain adoption and its impacts on key stakeholders across the supply chain.

In practical seafood supply chain terms, blockchain enables multiple parties who do not necessarily trust each other, harvesters, processors, exporters, importers, distributors, and retailers, to share a common record of a product's journey without any single party controlling that record. The immutability of the record means that a participant cannot retroactively alter what was recorded at an earlier stage without detection. This addresses a specific and well-documented problem in the sea cucumber trade: the alteration of harvest origin and species records at the processing or export stage to obscure product from illegal or quota-exceeding harvests.

The Fundamental Limitation: Garbage In, Garbage Out

The most important limitation of blockchain in any supply chain context is one that the technology cannot solve by itself. Blockchain is unable to safeguard against fraudulent endeavors that were instigated prior to the inclusion of data into the system. The lack of compliance between digital and physical goods is a significant vulnerability. The quality of data stored in a database is contingent upon the accuracy and reliability of the input, and this is frequently referred to as the "Garbage In, Garbage Out" problem.

In the sea cucumber supply chain, this limitation is structural. The most consequential fraud occurs at the point of harvest and initial processing, before any formal data entry would occur in a blockchain system. A harvester who records a catch of legally compliant, quota-within, correctly identified Holothuria scabra on a blockchain platform, when the actual catch was obtained in a closed area or contains a mix of species, has simply moved the fraud one step earlier. The blockchain records what was entered. It has no independent mechanism for verifying that what was entered matches what was actually harvested.

Adoption of blockchain remains limited due to technical complexity, high implementation costs, and fragmented integration between supply chains, according to research published in Scientific Reports (Nature, 2026) demonstrating blockchain-enabled traceability in Australian seafood. The implementation cost finding is particularly relevant for the Indonesian sea cucumber supply chain, which is characterized by large numbers of small-scale harvesters whose technical capacity and economic resources make individual blockchain participation impractical without substantial external support.

Where Blockchain Genuinely Adds Value

Despite these limitations, blockchain addresses specific, real vulnerabilities in the sea cucumber supply chain that conventional paper documentation systems cannot address as effectively.

The first is tamper-evidence in the middle and downstream portions of the supply chain. Once product has been correctly documented at the point of harvest and initial processing, and that documentation has been entered into a blockchain system, subsequent alterations by processors, trading intermediaries, or exporters become detectable. The history of a product's journey from processor to exporter to importer is recorded in a way that cannot be quietly modified by any single participant.

The second is multi-party verification without centralized authority. In the sea cucumber supply chain, multiple regulatory authorities, CITES Management Authorities in Indonesia, customs authorities in destination countries, and food safety agencies all require different documentation from the same shipment. A blockchain system shared across these authorities would allow each to verify the same underlying record rather than relying on paper documents that can be separately falsified for each authority.

Governance and regulation can create a strong compliance pull by aligning requirements for structured digital product information with regional policy frameworks, such as the Digital Product Passport introduced under the European Union's Ecodesign for Sustainable Products Regulation, with the first waves of implementation expected around 2026 for priority product groups. Regulatory emphasis on standardized and interoperable traceability data is increasing across export-oriented and sustainability-sensitive supply chains, particularly within EU governance environments.

For Indonesian sea cucumber exporters targeting European markets, this regulatory trajectory is directly relevant. The EU's Digital Product Passport framework, as it extends to seafood categories, will require documented supply chain information in structured digital formats. Exporters who have established blockchain-compatible documentation systems will be better positioned to meet these requirements without building entirely new compliance infrastructure when the regulations take effect.

The Adoption Barriers Specific to Sea Cucumber

Research published in PMC examining critical barriers to blockchain adoption in Chinese fisheries supply chains identified five pivotal barrier factors through systematic analysis: regulatory compliance complexity, cost of implementation, complex supply chain network structure, lack of standardized data formats, and limited technical capacity among small-scale operators. All five of these barriers apply with particular intensity to the Indonesian sea cucumber supply chain.

The complex supply chain network structure of Indonesian sea cucumber is among the most challenging in global seafood trade. Product moves from individual or small-group harvesters to village-level collectors, from collectors to regional aggregators, from aggregators to processing facilities, and from processing facilities to export operations. Each link in this chain involves a different entity with different technical capacity, different economic incentives, and different relationships with regulatory authorities. Implementing blockchain across this network requires every link to participate consistently, which creates a coordination problem that technology alone cannot resolve.

Key bottlenecks of blockchain-enabled traceability adoption in the seafood supply chain include the need for standardized data formats, interoperability between different blockchain platforms used by different supply chain participants, and the challenge of creating economic incentives for small-scale operators who bear implementation costs but do not directly capture the value premium that traceability creates for downstream buyers.

This last point is the most commercially significant for the Indonesian context. The economic value of traceability accrues primarily to downstream parties: exporters who can demonstrate documented supply chains to premium buyers, and buyers who can satisfy their own customers' sustainability requirements. The harvesters who must change their recording practices to make blockchain-based traceability possible receive the smallest share of this value, creating an incentive misalignment that has slowed adoption in multiple seafood sectors globally.

What Blockchain-Based Certification in Fisheries Has Achieved

Research published in IoT (MDPI, December 2025) surveyed blockchain-based certification technologies and methodologies applied specifically to the fisheries sector, analyzing 25 publications covering implementations from 2018 to 2024. The survey found that blockchain enhances trust through immutable record-keeping, smart contracts, and decentralized verification mechanisms. Research activity in blockchain-based fisheries certification intensified considerably from 2020 onwards, reflecting strong and growing interest in integrating blockchain with fisheries supply chains, cold-chain monitoring, and certification workflows.

Practical implementations in seafood have demonstrated measurable improvements in documentation efficiency where the upstream data entry problem has been adequately addressed. A case study in the Philippines demonstrated a blockchain-based system tracking fish supply chains from harvest to retail, with documented reductions in processing time for trade documentation. The Australian seafood sector has implemented blockchain-enabled traceability for specific high-value species as part of compliance with Australia's export certification requirements.

The common thread in successful implementations is not the blockchain technology itself but the governance structure around it: clear assignment of responsibility for data entry at each supply chain node, economic incentives aligned with accurate recording, and regulatory frameworks that treat blockchain records as the authoritative source for compliance verification.

The IoT Bridge: Linking Physical Product to Digital Record

The most promising technical development for addressing the garbage-in vulnerability is the integration of blockchain with Internet of Things devices that capture data automatically rather than relying on manual entry. The incorporation of IoT devices and the implementation of automated transactions through smart contracts show potential as viable approaches to address the gap between digital records and physical products.

In the sea cucumber supply chain context, IoT applications under active research include electronic tagging systems for tracking product through processing stages, temperature and humidity sensors for cold chain monitoring during export logistics, and automated weight and size measurement systems at processing facilities that generate machine-readable records for blockchain entry without requiring manual data transcription.

These technologies are not yet in routine use in Indonesian sea cucumber processing operations. Their implementation requires investment in hardware infrastructure, connectivity in remote coastal processing locations, and technical maintenance capacity that is not universally available across the Indonesian export sector. But the trajectory is established, and operations that begin building IoT-compatible data infrastructure now will be positioned to implement blockchain-based traceability more effectively as the underlying technology matures and the regulatory pressure from destination markets increases.

The Practical Implication for Supply Chain Decision-Making

For organizations currently evaluating blockchain as a traceability solution for their sea cucumber supply chains, the research literature points toward a consistent practical conclusion. Blockchain is not a substitute for supplier qualification. It is a supplement to it. The organizations that extract the most value from blockchain-based traceability are those that have already established the foundational elements of a documented supply chain: suppliers with established regulatory relationships, harvest origin documentation at the regional level, species verification protocols, and CITES compliance infrastructure. Blockchain enables these organizations to make their existing documentation systems more transparent and more tamper-evident to downstream parties.

For supply chains that lack these foundational elements, blockchain implementation will record undocumented or inaccurate information with the same immutability as documented and accurate information. The technology cannot distinguish between the two.

Sepanjang's supply chain documentation is built on the foundational elements that make blockchain integration meaningful: direct operational presence in Indonesian waters, established CITES compliance infrastructure, and multi-decade relationships with Indonesian regulatory authorities. We welcome conversations with organizations exploring how documented supply chain partnerships can support their traceability reporting requirements, with or without blockchain as the recording mechanism.

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Sepanjang — Indonesia's Specialty Ocean Products Co. Sourcing high-quality sea cucumber directly from Indonesian waters for over 20 years.

PT Sepanjang Laut Nusantara is an Indonesia's Specialty Ocean Products Co. specializing in Sea Cucumber, Seaweed, Abalone, and Seashell from Indonesia — for domestic and international B2B markets.

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