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EU Digital Product Passport on Cardano

Feasibility study for storing EU Digital Product Passports on the Cardano blockchain.

Scope and limitations

This is an architectural exploration, not compliance guidance. Three layers are clearly separated throughout:

  1. Regulatory layer — what the EU mandates (ESPR, Battery Regulation, delegated acts). Cited from EUR-Lex with specific articles.
  2. Data model layer — industry schemas (Battery Pass, UNTP, GS1). Not EU mandates — implementations aligned with regulatory requirements.
  3. Technical implementation layer — Cardano-specific architecture (MPFS, Aiken, did:prism). None of this is mandated by any EU regulation. The EU is technology-neutral.

Do not use this study for compliance decisions without cross-checking against the official regulation texts.

The EU DPP roadmap

The European Union is rolling out mandatory Digital Product Passports across virtually all physical products placed on its market. The ESPR (EU) 2024/1781 provides the framework; sector-specific regulations and delegated acts define the details.

timeline
    title EU DPP rollout
    section In force
        2023 : Battery Regulation enters into force
        2024 : ESPR enters into force
             : Construction Products Regulation enters into force
        2025 : Battery carbon footprint declaration
             : Separate textile collection mandatory (WFD)
    section 2026–2027
        2026 : EU DPP Registry operational
             : Destruction ban on unsold textiles
             : First ESPR delegated acts (iron/steel, textiles, tyres)
        2027 : Battery passport mandatory
             : Tyre DPP compliance expected
             : Detergents DPP mandatory
    section 2028–2030
        2028 : Battery recycled content thresholds
             : Textile DPP compliance expected
             : Electronics/ICT DPP expected
             : Furniture DPP expected
        2029 : Toys DPP mandatory
        2030 : Construction products DPP
             : ELV Environmental Vehicle Passport
    section 2031+
        2031 : Stricter battery recycled content

This study analyses three sectors with the earliest deadlines and deepest Cardano integration potential:

Sector Regulation Deadline Why it matters This study
Batteries (EU) 2023/1542 Feb 2027 First DPP ever mandated. Item-level. Dynamic SoH data. Strongest blockchain case. Regulatory drivers · Architecture
Tyres ESPR delegated act ~2027 #1 microplastics source. 6PPD crisis. Retreading collapse. Regulatory drivers · Granularity analysis
Textiles ESPR delegated act ~2027-2028 Forced labour. Greenwashing. Destruction ban. <1% recycling. Regulatory drivers · Supply chain

For the full list of upcoming DPP mandates across all sectors, see the DPP rollout timeline.

What is a DPP

The Digital Product Passport is a structured data record linked to physical products via a data carrier (QR code, RFID, NFC). It is not a tracking device — it is a regulatory compliance data infrastructure that makes six other EU regulations enforceable at product level:

Regulation What it requires DPP role
ESPR Ecodesign requirements (durability, recyclability, carbon footprint) Carries the data per product
CSDDD Supply chain due diligence (human rights, environment) Carries product-level evidence
EUDR Deforestation-free sourcing Carries traceability to origin
CBAM Carbon border adjustment for imports Carries embedded carbon data
Empowering Consumers Bans unsubstantiated green claims Provides verifiable data
WFD revision EPR eco-modulation for textiles Data substrate for fee differentiation

Why Cardano

The MPFS infrastructure (Merkle Patricia Forestry Service) provides production-grade on-chain/off-chain support for per-operator Merkle Patricia Tries with Aiken validators. Each economic operator manages one trie; products are leaves. One on-chain UTxO per operator.

Property Benefit for DPP
eUTxO model One UTxO per operator — naturally maps to per-operator trie roots
MPFS on-chain validators Aiken validators verify MPT transition proofs in a single transaction
did:prism W3C DID method anchored on Cardano — operator identity
Formal verification Aiken validators can be formally verified for compliance logic
Low fees ~$18/year per operator for daily root updates (batteries); <$10/year for static sectors

Key findings

Aspect Assessment
Technical feasibility High — MPFS infrastructure, Aiken validators, did:prism cover all requirements
Cost ~$18/year per battery operator (daily updates); <$10/year for tyres/textiles
Scalability One UTxO per operator — millions of products as MPT leaves, no on-chain bloat
EU compliance Technology-neutral regulation; adapter middleware needed for EU registry
Ecosystem maturity Early-stage — MPFS is production-grade; DPP Blueprint is docs-only; LW3 is pre-product

Contents

Sector studies (regulatory drivers → data model → Cardano architecture):

  • Batteries — critical raw materials, carbon footprint, second-life markets, consumer protection, safe recycling
  • Tyres — microplastics, 6PPD chemicals, retreading, EUDR, durability, end-of-life
  • Textiles — waste crisis, forced labour, greenwashing, destruction ban, environmental impact, EPR

Cardano platform (shared infrastructure):

EU DPP background: