Spanish Logistics and Blockchain: Supply Chain Traceability

Blockchain in logistics: separating signal from noise

Blockchain in logistics has been in the hype cycle for years. Presentations promise immutable traceability, elimination of intermediaries, and distributed trust. The reality in Spanish logistics in 2025 is more nuanced: there’s real adoption in specific niches, regulatory pressure accelerating it, and a majority of companies that still haven’t found a use case that justifies the investment.

The goal of this article isn’t to sell blockchain or dismiss it. It’s to document where it’s generating real value, where it’s not, and what a Spanish logistics company should consider before investing.

Where blockchain is already in production

Food traceability

The sector with the greatest real adoption. The reason: legal obligation. EU Regulation 2023/1115 on deforestation requires complete supply chain traceability for products like coffee, cocoa, soy, palm oil, cattle, timber, and rubber. Importing companies must demonstrate that the product doesn’t come from land deforested after December 2020.

IBM Food Trust (now in transition following IBM Blockchain’s closure) demonstrated that traceability from origin to the supermarket shelf is viable with blockchain. Carrefour was one of the first adopters in Spain, implementing blockchain traceability for free-range chickens in 2019. The consumer scans a QR and sees: farm of origin, slaughter date, processing plant, temperature during transport.

Walmart, which processed over 500 million blockchain-traced items in its supply chain, demonstrated that the time to trace a product’s origin was reduced from 7 days to 2.2 seconds. The number is impressive, but it needs context: the bottleneck wasn’t technological but organizational. Blockchain forced all participants to record data in a standardized way, which previously depended on emails, faxes, and Excel spreadsheets.

International trade documentation

International trade documents (bill of lading, certificates of origin, letters of credit) pass through multiple intermediaries, each with their own copy. TradeLens, the Maersk and IBM blockchain platform, processed over 40% of global container traffic before shutting down in 2022. Its closure doesn’t invalidate the concept; it invalidates the centralized business model owned by two competitors.

The current alternative: GSBN (Global Shipping Business Network), a consortium of 9 Asian shipping lines, and the DCSA (Digital Container Shipping Association) initiative that defines digitalization standards without imposing a specific blockchain platform. For Spanish logistics operating with maritime transport, DCSA is more relevant than any specific blockchain.

Spanish Customs (AEAT) doesn’t require blockchain for customs documentation, but the EU Single Window project (European single customs window, planned for 2025-2027) could incorporate distributed ledger elements for document verification between administrations.

Verifiable credentials in transport

The Digital Product Passport (DPP), mandatory in the EU for batteries (from 2027) and textiles (from 2030), requires an immutable record of the product’s lifecycle: components, material origin, carbon footprint, recycling instructions. Blockchain is a natural candidate for the DPP backend, though not the only one.

For Spanish logistics companies transporting batteries or electric vehicles, the DPP will mean that each shipment must carry an associated verifiable digital identity. The platforms building this infrastructure (Circulor, Everledger) use blockchain as an immutability layer.

Where blockchain is not the answer

Intra-company traceability: if all actors in the supply chain are within the same organization (or a controlled corporate group), you don’t need distributed trust. A conventional database with immutable audit logs (append-only) provides the same guarantee at lower cost and complexity.

High-volume operational transactions: recording every barcode scan in a warehouse on blockchain makes no economic or technical sense. Write latency on blockchain (seconds at best) is unacceptable for warehouse operations requiring milliseconds. Operational data belongs in a WMS. Only relevant traceability milestones (receipt, dispatch, delivery) deserve immutable recording.

When the problem is data quality, not trust: blockchain guarantees that recorded data isn’t modified. It doesn’t guarantee the data was correct at the time of recording. If the operator scans the wrong pallet, blockchain faithfully records the error. GIGO (Garbage In, Garbage Out) applies equally with or without blockchain.

Pragmatic alternatives

For the average Spanish logistics company (10-200 employees, 5-50 million revenue), pure blockchain may be overkill. Alternatives that provide verifiable traceability without blockchain complexity:

Immutable audit logs: append-only databases (Amazon QLDB, Immudb, or PostgreSQL with triggers preventing UPDATE/DELETE on audit tables). They provide practical immutability without distributed consensus.

Digital signatures with timestamping: each document or milestone is digitally signed with a qualified certificate (eIDAS) and sealed with a TSA (Time Stamping Authority). The result is a verifiable record with legal validity throughout the EU, without blockchain.

Anchoring: recording hashes of critical data on a public blockchain (Ethereum, Bitcoin) as proof of existence and integrity, without moving the data to the blockchain. The cost is minimal (an Ethereum transaction costs cents) and the immutability guarantee is that of the public blockchain. Companies like Originstamp and OpenTimestamps offer this service.

What your company should do today

1. Assess regulatory pressure: are your products subject to the DPP, the deforestation regulation, or sector regulation requiring verifiable traceability? If yes, start building the data infrastructure (not necessarily blockchain) to support it.

2. Identify the real pain point: is the problem that you can’t demonstrate the chain of custody? Or that traceability data exists but is scattered across 8 different systems? The second option is solved with data integration, not blockchain.

3. Pilot with anchoring: if you need verifiable immutability, start with hash anchoring on a public blockchain. Minimal cost, implementation in days, and sufficient for most audit and compliance requirements.

Supply chain traceability is a real problem with growing economic and regulatory value. Blockchain is one of the possible solutions, not the only one, and not always the best. Engineering is about choosing the right tool for the problem, not the right problem for the tool.

To design the right traceability architecture for your supply chain, our data engineering team evaluates technical and regulatory options. Explore our experience in the logistics sector and our article on logistics automation for a broader view of the sector’s digital transformation.