======================================================================== ICO-TS-001 August 2026

DPP-CQ: Digital Product Passport for Cultural & Quality Goods Standard Architecture and Core Specifications

                Version 2.0.0-draft — Public Review Draft (2nd round)

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Originating Organization: International Communication Organization (ICO) Document Number: ICO-TS-001:2026 Status: Public Review Draft Comment Period: September 1 – October 15, 2026 (2nd review: interoperability & compliance) Feedback: info@icoun.org | GitHub Issues ========================================================================

DPP-CQ: Digital Product Passport for Cultural & Quality Goods

Standard Architecture and Core Specifications

(ICO Digital Trust Standards Framework v2.0.0-draft)

Abstract

Against the backdrop of deep integration between the digital economy and global trade, cross-border product circulation is evolving from physical flow to trusted flow. Digital Product Passports (DPPs), as an emerging digital trust infrastructure, have achieved significant progress in the environmental data domain for industrial products, yet notable gaps remain in their coverage of cultural products, specialty agricultural goods, geographical indication products, and other categories.

This document systematically presents the overall architecture, core specifications, governance mechanisms, and implementation roadmap of the DPP-CQ Digital Product Passport for Cultural & Quality Goods standards framework. Built upon mature technologies such as W3C DIDs, Verifiable Credentials (VCs), and standards-based selective disclosure (SD-JWT / BBS+), this framework focuses on establishing digital trust in the cultural value and quality dimensions, addressing the inclusivity gap in existing DPP standards ecosystems.

The core standard, ICO Std 2001 (DPP-CQ), is a digital passport specification for cultural and quality products. It supports dual carriers of QR codes and NFC, provides a three-tier verification mechanism, and protects sensitive craftsmanship and commercial data through selective-disclosure proofs (SD-JWT / BBS+). The standards framework employs a multi-stakeholder governance model to ensure openness, neutrality, and inclusivity.

This document is issued as a Public Review Draft. We sincerely invite governments, enterprises, academic institutions, and non-governmental organizations worldwide to participate in building a more inclusive global digital trust ecosystem.

v2.0.0-draft update (Aug 2026): Following the first public review, this revision substantially expands the standard's international interoperability and compliance posture: a GS1 Digital Link / GTIN interop profile, three-tier physical carrier specification (open QR + SDM NFC + tamper-evident NFC) aligned with EN 18220, two normative credential format profiles (W3C Data Integrity with BBS+ and IETF SD-JWT VC / RFC 9529), an optional Chinese national cryptography suite (SM2/SM3/SM4), an ISO 14067-aligned sustainability data module (quality + sustainability dual-dimension model), AI-assisted assessment transparency provisions aligned with GB/T 47507-2026 and EU AI Act Art. 50, data lifecycle governance metadata, and UNTP-style conformity claims. All v2.0 additions are backward compatible with v1.x credentials.

Keywords: Digital Product Passport; Cross-Cultural Digital Trust; Quality Assets; DPP-CQ; Decentralized Identifiers; Verifiable Credentials; Selective Disclosure (SD-JWT / BBS+); GS1 Digital Link; Multi-Stakeholder Governance

Scope

This document describes the overall architecture, core specifications, governance mechanisms, and implementation roadmap of the DPP-CQ Digital Product Passport for Cultural & Quality Goods standards framework, with particular focus on the technical framework and application model of the core product-level standard ICO Std 2001-2026 (DPP-CQ).

Applicability: - Categories with cultural value and quality attributes, including cultural products, Intangible Cultural Heritage-related products, Geographical Indication (GI) products, specialty agricultural goods, and haute couture products - Application scenarios including product identity verification, quality grading, traceability verification, and digital confirmation of cultural value - Technical integration and system interoperability for all participating parties, including producers, certification bodies, trading platforms, and consumers

Exclusions: - Highly regulated special categories such as pharmaceuticals and medical devices (which must comply with sector-specific regulatory requirements) - High-sensitivity scenarios at the financial-grade or personal safety level, such as financial payment and identity authentication - Replacement of mandatory compliance requirements such as statutory product safety and quality inspection in respective jurisdictions

Purpose

This document aims to: 1. Systematically present the design philosophy and overall architecture of the ICO standards framework, providing a panoramic understanding for all stakeholders; 2. Define the core technical specifications and interoperability requirements of the DPP-CQ standard, guiding technical implementation; 3. Describe the governance mechanisms and participation pathways of the standards framework, inviting global stakeholders to co-build; 4. Solicit feedback from all sectors of society to promote continuous improvement and widespread adoption of the standards.

Status of This Document

This document is a Public Review Draft published by the International Communication Organization (ICO).

The content of this document may be revised based on community feedback. The official version shall be as officially published by ICO. This v2.0.0-draft incorporates the results of the first public review (July 6 – August 20, 2026) and opens a second review period: September 1 – October 15, 2026, focused on the new international interoperability and compliance annexes. Feedback may be submitted through the following channels:

• GitHub Issues: https://github.com/ICO-cloud/dpp-cq-standard/issues
• Email: info@icoun.org

This document does not constitute a legally binding instrument, nor does it represent the official position of ICO members. Formal publication of the standard requires approval by the ICO Standards Council.

Copyright Notice

© 2026 International Communication Organization (ICO). All rights reserved.

This document and associated standards are published under the Creative Commons Attribution 4.0 International License (CC BY 4.0). You are free to share, adapt, and use this work for commercial purposes, subject to the following conditions: - Attribution: You must give appropriate credit, provide a link to the license, and indicate if changes were made. - No additional restrictions: You may not apply legal terms or technological measures that legally restrict others from doing anything the license permits.

Reference implementations and software source code are released under the Apache License 2.0 open-source license.

Editors and Contributors

Technical Editor: ICO Technical Secretariat Standards Working Groups: DPP-CQ Technical Working Group, Governance & Compliance Model Group, Interoperability Working Group

Contributing Organizations (in alphabetical order): - International Communication Organization (ICO) - Tianji Credibility Research Institute - (Additional organizations to be added)

For the complete list of contributors and detailed revision history, please refer to the commit history of the GitHub repository.

Revision History

Table of Contents

1. Introduction
2. Mission & Vision
3. Background & Rationale
4. Standards Architecture
5. Core Standards
6. Governance
7. Technical Approach
8. Compliance & Legal Framework
9. Getting Involved
10. Roadmap & Pilots
11. Risks & Challenges
12. Conclusion
13. Annex A (Normative): DPP-CQ Technical Specification Draft
14. Annex B (Informative): Glossary
15. Annex C (Informative): Abbreviations
16. Annex D (Informative): References
17. Annex E (Informative): Frequently Asked Questions
18. Annex F (Normative, separate documents): v2.0 Interoperability & Compliance Annexes

1. Introduction

In an era of deep integration between the digital economy and global trade, cross-border product circulation is transitioning from physical flow to trusted flow. However, significant inclusivity gaps exist in the current global digital product verification ecosystem:

• Existing Digital Product Passport (DPP) standards primarily focus on environmental and circular economy data for industrial products, and do not adequately cover categories such as cultural products, specialty agricultural goods, and geographical indication products.
• A vast number of products with unique cultural value and quality advantages lack digital trust-transmission tools, making it difficult for them to fully realize their value in global markets. According to a joint OECD/EUIPO study, global trade in counterfeit goods reached USD 467 billion in 2021, accounting for 2.3% of global imports. Among these, geographical indication products and specialty cultural products, with their high recognizability and premium pricing potential, have become prime targets for counterfeiting. Specialty products from developing countries are severely undervalued due to lack of trust.
• Developing economies face multiple challenges in digital trust infrastructure development, including technological, standardization, and capacity gaps. The UN Global Digital Compact (GDC) explicitly calls for increased support for digital capacity building in developing countries to ensure that digital technologies benefit all people.

The International Communication Organization (ICO), as a multi-stakeholder international cooperation platform, is committed to advancing Global Digital Inclusion and Cross-Cultural Digital Trust. This document presents the overall architecture, core standards, governance mechanisms, and implementation roadmap of the ICO standards framework, and invites global stakeholders to join us in building a more inclusive global digital trust ecosystem.

2. Mission & Vision

2.1 Mission

To empower the digital preservation and value transmission of global cultural and quality assets through open standards.

2.2 Vision

To build a globally applicable, technology-neutral, and culturally inclusive digital trust standards framework, ensuring that every product carrying cultural value and quality commitment possesses a verifiable, traceable, and mutually recognizable digital identity. By 2030, achieve 100,000+ cultural and quality products with globally mutually recognizable digital identities, driving global trade from price competition to value competition.

2.3 Core Principles

3. Background & Rationale

3.1 The Trust Deficit in Global Trade

In current cross-border global trade, categories such as specialty agricultural goods, cultural products, and handicrafts face pervasive trust challenges: consumers struggle to verify the true origin, quality grade, and cultural background of products; purchasers lack efficient and reliable supply chain traceability tools; authentication of geographical indication products is costly; and cultural value and craft heritage cannot be effectively transmitted through traditional channels.

A direct consequence of this trust deficit is the "bad money drives out good money" effect — genuinely superior products and producers who uphold traditional craftsmanship are unable to obtain returns commensurate with their value in the global market.

3.2 Coverage Gaps in Existing Standards

Existing DPP standards are primarily led by advanced economies, focusing on environmental footprints and circular economy data for industrial products, compliance-driven mandatory information disclosure, and serving the market access requirements of developed economies. Significant standard gaps remain in the following areas:

3.3 Interoperability with Existing Standards

ICO standards adopt a strategy of "baseline compatibility, differentiated value":

• W3C DID/VC: Used as the underlying identity and credential technology foundation, fully compatible; v2.0 supports both Data Integrity proofs (BBS+) and SD-JWT VC (RFC 9529)
• GS1 Identification System: GTIN/GLN identifiers and GS1 Digital Link resolution are supported through a normative interop profile; supply-chain events map to EPCIS 2.0/CBV 2.0; DID and GTIN are bound as complementary identifiers
• EU DPP / ESPR / EN 18219-18223: Open data carriers (EN 18220), unique identifiers (EN 18219) and sustainability data attributes are aligned at field level; conformity claims use UNTP-style vocabulary
• UN/CEFACT UNTP: Conformity claim and interoperability vocabulary adopted as the multilateral bridge for cross-regime data exchange
• ISO standards: Compatible with ISO 22000 (food safety), ISO 14067 (product carbon footprint), ISO 26000 (social responsibility), ISO 22739 (blockchain terminology)
• Chinese national standards: AI trustworthiness (GB/T 47507-2026) and commercial cryptography (SM2/SM3/SM4) supported for domestic deployments

DPP-CQ does not replace statutory conformity assessment or sectoral certification held by producers; it carries and references such attestations in a verifiable, machine-readable form.

3.4 Technology Maturity Window

Technologies such as W3C DIDs (Decentralized Identifiers), Verifiable Credentials, blockchain-based evidence anchoring, and selective-disclosure credential technology (SD-JWT, BBS+) have entered mature application phases, providing the technical foundation for building a globally applicable open standard for the cultural and quality dimensions.

Meanwhile, international documents and data such as UNESCO's Operational Directives for the Implementation of the Convention for the Safeguarding of the Intangible Cultural Heritage (2016/2018 edition) and WIPO's World Intellectual Property Indicators 2024 all indicate the urgency and necessity of leveraging digital technology to protect cultural assets and geographical indications. The timing is opportune for establishing open standards oriented toward the cultural and quality dimensions.

4. Standards Architecture

4.1 Four-Layer Architecture

┌─────────────────────────────────────────────────────┐
│ Layer 4  Governance & Compliance                     │
│  Standards development process · Multi-stakeholder   │
│  governance · Dispute resolution · Assessment rules │
│  rules                                               │
├─────────────────────────────────────────────────────┤
│ Layer 3  System & Assessment                        │
│  Institutional credibility assessment · Cross-       │
│  cultural trust framework · AI content provenance    │
├─────────────────────────────────────────────────────┤
│ Layer 2  Product Standards                          │
│  Cultural & Quality DPP · Haute couture · GI mutual  │
│  recognition · ICH craftsmanship                     │
├─────────────────────────────────────────────────────┤
│ Layer 1  Base Protocols                             │
│  Digital identifiers · Data provenance · Credential  │
│  formats · Naming conventions                        │
└─────────────────────────────────────────────────────┘

4.2 Standards Numbering System

4.3 Initial Core Standards Inventory

5. Core Standards

5.1 ICO Std 2001: Digital Product Passport for Cultural & Quality Goods (DPP-CQ)

Positioning: A digital identity standard for cultural products, specialty agricultural goods, geographical indication products, and ICH handicrafts, providing a unique, trustworthy, and verifiable digital identity credential for every product carrying cultural value and quality commitment.

Core Data Dimensions:

Technical Features:

• Based on W3C DID Core and Verifiable Credentials international standards
• Supports dual-carrier verification via QR code and NFC
• Three-tier verification mechanism: Quick Verification (<1s) / Deep Verification / Judicial-Grade Verification
• Hybrid storage architecture: data stored off-chain, hashes anchored on-chain
• ZKP-enabled Privacy: The standard enables manufacturers, ICH transmitters, and distribution entities to prove compliance with specific quality grades and origin regulatory requirements to consumers and regulatory authorities through selective-disclosure proofs (SD-JWT / BBS+), without disclosing core craft recipes, supply chain node identities, or commercial procurement prices — achieving "data usability without visibility, trustworthiness without information leakage"
• Selective Disclosure: Data holders may choose the scope of disclosure based on the verification scenario

Applicable Categories: Geographical indication agricultural products (tea, grains & oils, fruits, medicinal herbs, spices), Intangible Cultural Heritage products (ceramics, embroidery, lacquerware, woodwork), haute couture and cultural attire, premium food and beverages, handicrafts and cultural creative products.

5.2 ICO Std 1001: Global Information Integrity & Data Provenance

Defines the credibility assessment framework and provenance methodology for digital content and data assets, with particular emphasis on provenance identification specifications for AI-generated content. Covers data integrity verification, provenance chain construction methods, credibility grading assessment, timestamps, and evidence anchoring interfaces.

5.3 ICO Std 3001: Global Digital Credibility Assessment (GDCC)

A digital credibility assessment and evaluation standard for institutions (enterprises, media, NGOs, etc.), constructing an assessment system across multiple dimensions including information transparency, data credibility, governance compliance, and cultural responsibility, with support for cross-cultural scenario adaptation.

6. Governance

6.1 Multi-Stakeholder Governance Model

The ICO standards framework employs a multi-stakeholder governance model to ensure the openness, representativeness, and credibility of standards. Important decisions follow a consensus-first principle; where consensus cannot be reached, decisions are adopted by a two-thirds majority.

Governance design references best practices from international standards bodies such as W3C and IETF, ensuring: - Balanced representation of economies at different development stages - Diverse participation from government, industry, academia, and civil society - Effective separation of technical decision-making from commercial interests

6.2 Governance Structure

General Assembly (supreme decision-making body): Convened annually to deliberate on strategic direction, budget, and Council elections.

Standards Council (decision-making body): Responsible for strategic decisions, standard approval, budget approval, and final dispute adjudication. Seats are allocated by category: Government Representatives 25% / Industry 25% / Academia 20% / Civil Society 20% / Technical Secretariat 10% (non-voting).

Specialized Committees: - Technical Committee: Responsible for standard technical review and technical roadmap planning - Strategy Committee: Responsible for strategic planning and external cooperation - Compliance & Dispute Committee: Responsible for compliance review and dispute adjudication

Standards Working Groups: - WG-DPP: Digital Product Passport Working Group - WG-GI: Geographical Indication Mutual Recognition Working Group - WG-DID: Decentralized Identifiers and Credentials Working Group - WG-GDCC: Institutional Credibility Assessment Working Group - WG-Governance: Governance Rules Working Group

6.3 Technical Secretariat

The Technical Secretariat is the neutral executive body of the standards framework, undertaken by a designated entity authorized by the Standards Council. Its core responsibilities: - Maintain reference implementations and open-source code repositories for the standards - Provide technical support and conformance testing platforms - Operate the root resolution infrastructure and trusted registries - Support the technical work of working groups - Organize technical training and developer community building

Key Principle: The Technical Secretariat does not participate in standard voting, ensuring the separation of technical execution from standards development.

6.4 Infrastructure and Root Resolution Mechanism

To ensure high security and continuous availability of data resolution in global cross-border circulation, the ICO Council authorizes the Technical Secretariat to build and operate:

• ICO Root Resolver Network: A globally distributed DID resolution infrastructure providing highly available, low-latency identifier resolution and credential status query services
• Tianji Credibility Registry (TCR): A unified credential hash registration and anchoring database

Operating Mechanism: When any third-party certification body or service provider issues Digital Product Passports under ICO Std 2001/2003, the credential hash fingerprints and identifiers (DIDs) generated must be registered and consensus-anchored at the root nodes, ensuring traceability and judicial-grade authenticity verification across networks and geographical regions worldwide.

Security Assurance: - Multi-region redundant deployment with 99.99% availability target - At least one independent third-party security audit per year, with audit reports made public - Major technical upgrades require review by the Technical Committee and approval by the Standards Council

7. Technical Approach

7.1 Technology Selection Principles

• International Standards First: Prioritize adoption of published international standards (W3C, IETF, ISO)
• Open Source & Open: Core technology stack based on open-source licenses
• Extensible Architecture: Modular design supporting future standard extensions
• Privacy by Design: Data minimization principle, implemented via standards-based selective disclosure (SD-JWT / BBS+)

7.2 Core Technology Stack

7.3 Multi-Chain and Multi-Cloud Architecture

ICO standards are not bound to any specific blockchain or cloud platform. Through a unified hash anchoring abstraction layer, multiple underlying storage solutions are supported (public chains, consortium chains, distributed hash tables, trusted cloud storage, etc.). Different jurisdictions may select anchoring solutions compliant with local regulations while maintaining cross-chain verification consistency.

7.4 Open Source Strategy

7.5 Intellectual Property Policy

The ICO standards framework adopts an intellectual property policy of "openness first, reasonable protection":

Standard-Essential Patent (SEP) Policy: - Encourages patent holders to license their essential patents on FRAND (Fair, Reasonable, and Non-Discriminatory) terms - Core standards (DIDs, credential formats, and other base layers) prioritize open-source technology solutions free of patent encumbrances - Patent searches and disclosures are conducted prior to standard publication to minimize potential patent risks - An Intellectual Property Working Group is established to oversee patent policy development and dispute resolution

Trademark and Logo Policy: - "ICO Verified" mark, "DPP-CQ" mark, and others are registered trademarks of ICO - Products and services meeting DPP-CQ conformance requirements may use official marks subject to compliance requirements; DPP-CQ conformance is an assessment/verification, not statutory certification - Logo usage specifications and supervision mechanisms are established to prevent abuse and misleading - Logo usage by regional nodes and partners requires authorization and review

Copyright Policy: - Copyright in standard texts is held by ICO and made available under the CC BY 4.0 license - Copyright in reference implementations and tool code is held by contributors and open-sourced under the Apache 2.0 license - Third-party derivative works must comply with the corresponding open-source licenses and indicate source

7.6 Standards Version Management

Version Numbering Scheme: Uses the format "major.minor.patch" (e.g., v1.2.3) - Major version: Architectural expansion of the standard's scope (e.g. v2.0 adds the GS1 interop profile, SD-JWT VC format and sustainability module); all v2.0 data additions are OPTIONAL so v1.x credentials remain valid - Minor version: Backward-compatible functional additions within the same architecture - Patch version: Backward-compatible bug fixes

Backward Compatibility Commitments: - Minor version updates maintain backward compatibility of data formats and interfaces - Major version updates provide at least 12 months of transition period and migration tools - The validity of issued credentials is not affected by standard version updates

Standards Lifecycle: - Working Draft (WD) → Committee Draft (CD) → Public Review Draft (PR) → International Standard (IS) - International standards are reviewed every 5 years to ensure continued validity - Obsolete standards initiate revocation procedures with advance notice to all adopters

7.7 Physical Carrier Strategy: Three-Tier, Open by Default

DPP-CQ v2.0 defines three physical carrier levels (normative detail: Carrier Specification):

Two principles govern carrier design:

1. Open carrier principle (aligned with ESPR Art. 9 and EN 18220): every product must be readable with generally available means — no proprietary app, registration, or fee. Security is achieved through cryptographic verification of the resolved data, never through hiding the payload.
2. Dual carrier for international products: products in the GS1 interop profile carry both an open QR (universal scanning, retail/customer flows) and an SDM NFC tag (cryptographic authenticity); both resolve to the same passport, and the verification page indicates which carrier was presented.

7.8 Dual-Dimension Data Model: Quality + Sustainability

Existing DPP regimes (notably the EU ESPR framework) organize product data primarily around environmental sustainability and circular economy. DPP-CQ's core differentiation is the quality and cultural value dimension. v2.0 formalizes a dual-dimension model rather than choosing between them:

• Quality & cultural dimension (DPP-CQ core): quality grade, sensory and laboratory attributes, craftsmanship, ICH/GI status, artisan lineage, assessment methodology and AI-use disclosure.
• Sustainability dimension (v2.0 optional module): product carbon footprint per ISO 14067, material composition with recycled content, end-of-life guidance — structured to map onto ESPR delegated-act data attributes as they are adopted per product class.

This design lets a single credential serve both purposes: it satisfies the cultural/quality trust gap DPP-CQ was created to address, while producing machine-readable sustainability data that EU importers, retailers and regulators can consume. The quality assessment itself remains governed by ICO standards (notably Std 3001), preserving the framework's independence.

7.9 AI-Assisted Assessment Transparency

Where AI systems support quality assessment (data extraction, pre-scoring, image recognition), DPP-CQ adopts transparency and human-oversight rules aligned with GB/T 47507-2026 (AI trustworthiness general rules) and the transparency direction of EU AI Act Art. 50:

• AI participation MUST be disclosed in the credential (qualityAttributes.assessment.aiDisclosure).
• The final grading decision MUST be made by a qualified human assessor; the credential identifies the decision role and review process.
• The assessment methodology reference and full report MUST be retrievable via the credential (reportReference).

8. Compliance & Legal Framework

8.1 Data Sovereignty and Cross-Border Compliance Architecture

ICO standards employ an architectural design of "data localization, hash cross-border", fundamentally reducing cross-border data compliance risks:

• Raw data stored locally: Detailed product quality, craftsmanship, and supply chain data are stored locally by the issuer or certification body, with no mandatory cross-border transmission
• Hash fingerprint anchoring: Only hash fingerprints of data (one-way irreversible) are registered and anchored at root nodes; hashes themselves contain no identifiable original information
• Selective-disclosure verification: Sensitive data is verified via SD-JWT / BBS+ selective disclosure; verifiers receive only the claims or compliance conclusions they are authorized for, without access to undisclosed raw data

This architecture is compatible with China's Data Security Law and Personal Information Protection Law, the EU's General Data Protection Regulation (GDPR), and the data sovereignty principles of most countries.

8.2 Compliance Adaptation by Major Jurisdictions

8.2b International Interoperability Position

DPP-CQ is an independent international standard and does not subordinate itself to any regional regulatory regime. Its interoperability strategy is "baseline compatibility, differentiated value":

• Baseline compatibility (non-negotiable interop): open data carriers, global identifiers (GTIN alongside DID), standard credential formats (W3C VC / SD-JWT VC), standard APIs, and machine-readable conformity claims. These ensure DPP-CQ credentials can be read and cross-checked by EU DPP, retail, customs and GS1-based systems.
• Differentiated value (kept independent): the quality-and-culture assessment methodology (Std 3001), the multi-stakeholder governance model, affordability for small producers, and applicability to cultural product categories that environmental DPPs do not cover.
• Multilateral bridge: active engagement with the UN/CEFACT UNTP (UN Transparency Protocol) conformity-credential vocabulary and the ISO DPP work item (ISO/PWI 25534-1 track), so that DPP-CQ interops through neutral, multilateral standards rather than through any single jurisdiction's registry.

DPP-CQ's flagship categories (tea, wine & spirits, cultural crafts, traditional medicine and health products, specialty agri-foods) are not within the first ESPR priority product groups; the standard therefore has a strategic window to mature its interop profile before any statutory DPP obligations potentially reach its categories.

8.3 Data Lifecycle Governance

Every DPP-CQ credential in v2.0 carries a dataLifecycle record identifying the data controller, retention policy, storage jurisdiction, cross-border mode (default: hash-only), deletion/anonymization rules, privacy notice URI, and PIA/DPIA summary URI. A public PIA summary is maintained at docs/compliance/pia-summary.md, and conformity declarations against GB/T 47507-2026, the ESPR/EN framework, and data-protection regimes are maintained at docs/compliance/conformity-declarations.md.

8.4 Electronic Evidence and Legal Effect

ICO standards are themselves technical and industry standards, without legal force (consistent with the nature of international standards such as those from ISO). However, their design fully considers judicial evidence requirements:

• Hash integrity proof: Cryptography-based data integrity verification can serve as electronic evidence in most jurisdictions
• Trusted timestamps: Integration with authoritative timestamp services meets the temporal certainty requirements for electronic evidence
• Complete evidence chain: Issuance chains, change records, and revocation logs constitute a complete evidence chain
• Third-party audits: Root nodes and core services undergo regular independent third-party audits to enhance evidentiary credibility

Specific legal effect varies by jurisdiction. ICO encourages regional nodes to collaborate with local legal institutions to promote recognition of the evidentiary weight of DPP-CQ credentials in their respective jurisdictions.

8.5 Dispute Resolution Mechanism

Referencing UNCITRAL (United Nations Commission on International Trade Law) arbitration rules and international commercial arbitration practices, ICO establishes a three-tier dispute resolution mechanism:

1. Self-Help Mediation: Parties negotiate independently through platform tools
2. Expert Review: A review panel composed of industry and technical experts issues a ruling
3. Arbitration (Final): Submission to international commercial arbitration, with arbitral awards enforceable globally under the New York Convention

9. Getting Involved

9.1 Membership Categories

9.2 Participation Pathways

Technical Participation: Join the GitHub open-source community and contribute code, documentation, and technical solutions

Standards Participation: Apply to join relevant standards Working Groups (WGs) to participate in standard development and review

Ecosystem Participation: Become a verified service provider, regional node operator, or joint laboratory partner

Adoption Participation: Implement ICO standards in products or services and apply for DPP-CQ conformance assessment

10. Roadmap & Pilots

10.1 Three-Year Development Roadmap

2026: Foundation and Ecosystem Launch Year - Q3: Publish governance standards and DPP-CQ v1.0 - Q3: Establish Technical Secretariat, launch Root Resolver Network - Q4: Host Global Digital Credibility Governance Summit - Q4: Publish GDCC standard draft - Year-end target: 3+ standards published, 50+ member institutions, 1,000+ pilot products

2027: Ecosystem Expansion and Regional Deployment Year - Publish 2–3 new standards (GI mutual recognition, haute couture, etc.) - Launch 3 regional nodes: Southeast Asia, Middle East, Africa - Establish 5+ industry joint laboratories - 500+ institutional adopters, 10,000+ verified products - Establish formal cooperation with 2–3 international standards organizations

2028 and Beyond: Global Mutual Recognition and Ecosystem Maturity Year - 10+ standards published - 20+ national/regional nodes - 1,000+ institutional adopters, 100,000+ verified products - Establish mutual recognition mechanisms with major international standards organizations

10.2 Initial Pilot Framework

The first batch of flagship product assessment pilots will launch in the second half of 2026:

Pilot evaluation dimensions: number of verified products, traceability data quality, user verification frequency, cross-border transaction improvement, producer value gain.

11. Risks & Challenges

12. Conclusion

In the digital age, trust is the most precious public good.

From the Industrial Revolution to the Information Revolution, every leap in human society has been accompanied by iterations in trust mechanisms. Today, as digital technology reshapes global trade and cultural exchange at an unprecedented pace, we need a more inclusive and pluralistic digital trust infrastructure — one that not only serves efficiency optimization for industrial products but also safeguards the diversity of human culture, ensuring that the unique value of every civilization can be seen, recognized, and respected in the digital world.

The ICO standards framework is committed to providing open, neutral, and inclusive digital trust infrastructure for global cultural and quality assets. We are not building a closed standards system; rather, we are contributing to the global digital trust edifice — using W3C's technical language to write chapters of cultural value; using multi-stakeholder governance wisdom to build cross-cultural bridges of trust.

We look forward to a future where every product carrying human wisdom and cultural value possesses a trustworthy digital identity — making global trade fairer, cultural heritage more vibrant, and the digital economy more human-centered.

We invite stakeholders worldwide to submit revision proposals by August 20, 2026 (Accelerated Procedure · 45-day review period), and to join us in building a more inclusive global digital trust future.

Annex A (Normative): DPP-CQ Technical Specification Draft

Annex A (Normative): DPP-CQ Technical Specification Draft

This annex presents a summary of the DPP-CQ standard technical specification draft. The complete technical specification will be published in the official version of ICO Std 2001-2026.

A.1 DID Identifier Format

The DPP-CQ product DID uses the did:ico:dpp method name, with the following format:

did:ico:dpp:<namespace>:<unique-id>

• namespace: Category or issuer namespace (e.g., tea, ceramic, fashion)
• unique-id: Product unique identifier; UUID v4 or GS1-like coding is recommended

Examples:

did:ico:dpp:tea:longjing-xh-2026-001
did:ico:dpp:ceramic:jz-yd-2026-0892

A.2 JSON-LD Context Example

The JSON-LD context definition for DPP-CQ credentials:

{
  "@context": [
    "https://www.w3.org/2018/credentials/v1",
    "https://www.w3.org/2018/credentials/examples/v1",
    "https://icoun.org/contexts/dpp-cq/v1"
  ],
  "id": "did:ico:dpp:tea:longjing-xh-2026-001",
  "type": ["VerifiableCredential", "DPPQualityCredential", "CulturalHeritageCredential"],
  "issuer": "did:ico:issuer:zjtea-assoc",
  "issuanceDate": "2026-07-15T00:00:00Z",
  "expirationDate": "2027-07-14T23:59:59Z",
  "credentialSubject": {
    "id": "did:ico:dpp:tea:longjing-xh-2026-001",
    "productName": "West Lake Longjing Tea",
    "category": "geographical-indication-tea",
    "qualityGrade": "Premium",
    "origin": {
      "type": "GeographicalIndication",
      "giNumber": "GI-CN-0001",
      "region": "West Lake, Hangzhou Production Area",
      "country": "CN"
    },
    "culturalData": {
      "heritageStatus": "National Intangible Cultural Heritage",
      "heritageYear": 2008,
      "craftMethod": "Hand-pan-fired · Ten Traditional Techniques",
      "artisanInfo": {
        "name": "(Optional, disclosed upon authorization)",
        "generation": "5th Generation Inheritor"
      }
    },
    "traceability": {
      "harvestDate": "2026-03-28",
      "processLocation": "Longwu Tea Town, Hangzhou",
      "batchNumber": "XH20260328A01"
    },
    "qualityAttributes": {
      "appearance": "Flat and smooth, tender green color",
      "aroma": "Lasting fresh aroma",
      "taste": "Fresh, mellow, and smooth"
    }
  },
  "proof": {
    "type": "BbsBlsSignature2020",
    "created": "2026-07-15T10:30:00Z",
    "proofPurpose": "assertionMethod",
    "verificationMethod": "did:ico:issuer:zjtea-assoc#keys-1",
    "proofValue": "..."
  }
}

A.3 Root Resolver Node API Specification (Draft)

A.4 Three-Tier Verification Process

Scan QR / NFC Tap
    │
    ├── Quick Verification (<1s)
    │   └── Verifies: DID validity + Credential status + Basic information
    │
    ├── Deep Verification (3–5s)
    │   └── Verifies: Complete credential signature chain + Traceability data
    │                    + Quality details + ZKP proof
    │
    └── Judicial-Grade Verification (application required)
        └── Verifies: Root node anchored hash + Timestamp proof
                     + Complete audit trail

Annex B (Informative): Glossary

Annex B (Informative): Glossary of Terms

Annex C (Informative): Abbreviations

Annex C (Informative): Abbreviations

Annex D (Informative): References

Annex D (Informative): References

1. United Nations. A Global Digital Compact — Our Shared Agenda. 2024.
2. WIPO (2024). World Intellectual Property Indicators 2024. Geneva: World Intellectual Property Organization.
3. UNESCO. Convention for the Safeguarding of the Intangible Cultural Heritage. 2003.
4. UNESCO. Operational Directives for the Implementation of the Convention for the Safeguarding of the Intangible Cultural Heritage. 2016/2018.
5. OECD/EUIPO. Mapping Global Trade in Fakes 2025: Global Trends and Enforcement Challenges. Paris: OECD Publishing, 2025.
6. W3C. Decentralized Identifiers (DIDs) v1.0. W3C Recommendation, July 2022.
7. W3C. Verifiable Credentials Data Model v2.0. W3C Recommendation, May 2025.
8. UNECE. Global Digital Product Passport Interoperability Initiative. United Nations Economic Commission for Europe.
9. European Commission. Proposal for a Regulation on Ecodesign for Sustainable Products (ESPR). 2022.
10. OECD. Enhancing Digital Trust for All. 2024.
11. World Bank. Digital Economy and Inclusive Growth. 2023.
12. UNCITRAL. UNCITRAL Model Law on Electronic Commerce.
13. ISO. ISO 22000: Food Safety Management Systems. International Organization for Standardization.
14. GS1. EPCIS 2.0 and Core Business Vocabulary (CBV). GS1 Standard.
15. IETF. RFC 9529 — SD-JWT: Selective Disclosure for JWTs (SD-JWT). 2024.
16. W3C. Verifiable Credential Data Integrity 1.0 (EdDSA / BBS cryptosuites). W3C Recommendations.
17. GS1. GS1 Digital Link: URI Syntax, version 1.6. GS1 Standard, 2024.
18. CEN-CENELEC JTC 24. EN 18216:2026 / EN 18219–18223:2026 — Digital Product Passport horizontal standards. 2026.
19. European Union. Regulation (EU) 2024/1689 (AI Act), Art. 50; Regulation (EU) 2023/1542 (Batteries).
20. ISO. ISO 14067:2018 — Greenhouse gases — Carbon footprint of products.
21. UN/CEFACT. UN Transparency Protocol (UNTP) — Conformity Credential specification. untp.unece.org.
22. SAC. GB/T 47507-2026 AI trustworthiness general rules. 2026.
23. IETF. The BBS Signature Scheme. IETF Draft.

Annex E (Informative): Frequently Asked Questions

Annex E (Informative): Frequently Asked Questions

Q1: What is ICO? What qualifications does it have to develop international standards?

ICO (International Communication Organization) is a multi-stakeholder international cooperation platform dedicated to advancing global digital inclusion and cross-cultural digital trust.

The ICO standards framework employs an open community-driven development model, following best practices in international standard-setting (openness, transparency, consensus, balanced representation). The vitality of standards lies in adoption and ecosystem, not administrative mandate — the core Internet protocols (TCP/IP, HTTP, etc.) were not promulgated by governments or official bodies, but became de facto standards through joint advancement by open-source communities and standards organizations and widespread market adoption. ICO is committed to becoming the de facto standard-setter in the field of cultural and quality digital trust.

Q2: What is the relationship between ICO standards and the EU DPP? Will they conflict?

A complementary relationship, not a competitive one.

The EU DPP (under the ESPR framework) focuses primarily on environmental and circular economy data for industrial products — a "green dimension" Digital Product Passport. ICO DPP-CQ focuses on the cultural value and quality dimensions of cultural products and specialty agricultural goods — a "cultural dimension" Digital Product Passport. The two cover different product categories and data dimensions; they are complementary rather than substitutive.

At the technical level, DPP-CQ is fully compatible with W3C DID/VC standards, sharing the same technical foundation as the EU DPP, enabling data interoperability. v2.0 makes this concrete: products in the GS1 interop profile carry GTIN identifiers and open GS1 Digital Link carriers (aligned with EN 18219/18220), credentials support SD-JWT VC (RFC 9529) alongside BBS+, and sustainability data follows ISO 14067 and UNTP-style conformity claims, so EU importers and regulators can read and cross-check DPP-CQ data with standard tooling. DPP-CQ's flagship categories (tea, wine & spirits, cultural crafts, traditional medicine products) are not in the first ESPR priority product groups, so there is no statutory conflict; the two regimes address different dimensions and can be carried by the same passport. We welcome standard coordination and mutual recognition dialogue with relevant EU institutions.

Q3: Why is a Root Resolver Network needed? Will it create a monopoly?

The core function of the Root Resolver Network is to ensure consistency of DID resolution and queryability of credential status in global cross-border circulation. This is analogous to the root servers of the Domain Name System (DNS) — not for the purpose of monopolization, but for the purpose of interoperability.

The design of the root resolution mechanism follows the following principles: - Technology-neutral: Root nodes only provide resolution and anchoring services; they do not participate in standard-setting and do not engage in commercial competition; - Governance constraints: Root node operation is overseen by the Technical Committee and authorized by the Standards Council; major changes require approval through governance processes; - Gradual decentralization: The long-term goal is to establish a distributed root node network with multiple regions and multiple operators, avoiding single-point dependencies; - Open source and open: The reference implementation of root nodes is fully open-source, and any institution may deploy a compatible node.

Q4: How are data security and privacy ensured? Will data exit issues arise?

ICO standards employ an architectural design of "data localization, hash cross-border": - Raw data stored locally: Detailed product quality, craftsmanship, and supply chain data are stored locally by the issuer or certification body, with no mandatory cross-border transmission; - Hash fingerprint anchoring: Only hash fingerprints of data (one-way irreversible) are registered and anchored at root nodes; hashes themselves contain no identifiable original information; - Selective disclosure: Sensitive data is verified via SD-JWT / BBS+ proofs; verifiers receive only the claims or compliance conclusions they are authorized for, without access to undisclosed raw data; - Compliance adaptation: Regional nodes may conduct localized deployment and compliance adjustments in accordance with local data regulations.

This architecture fundamentally reduces the risk of cross-border flow of raw data and complies with regulatory requirements for data sovereignty and data security in all countries.

Q5: What is the relationship between the Tianji system and ICO?

The Tianji system is one of the institutions undertaking the role of Technical Secretariat for the ICO standards framework, responsible for reference implementation of standards, root node operation and maintenance, and technical support.

This arrangement is analogous to the relationship between W3C and host institutions such as MIT/ERCIM — standards are developed jointly by the community, and the Technical Secretariat is responsible for execution and implementation. The Tianji system, as a technical service provider, does not participate in standard voting, ensuring separation of standard-setting from technical execution.

Q6: Is there a fee to adopt ICO standards?

The standards themselves are completely free. - Standards documentation: Free to download and use (CC BY 4.0 / Apache 2.0) - Reference implementations: Open-source and free, freely modifiable and commercially usable - Basic verification: Basic functions such as scan-to-verify are freely available

Value-added services (such as custom development, advanced assessment services, technical support, etc.) may be provided by service providers in the ecosystem; ICO itself does not directly operate commercial services.

Q7: What is the relationship with GS1 and ISO? Is this a separate stovepipe effort?

No, it is not a separate stovepipe effort. ICO standards are built upon existing international standards such as W3C, ISO, and GS1, serving as a supplement and extension of the existing standards ecosystem in the cultural and quality dimensions.

W3C DID is the "technical standard for ID cards" (telling us how to make the card), ISO/GS1 is the "industry coding specification" (telling us how to number things), and ICO DPP-CQ is the "content specification for cultural product passports" (telling us what content goes in the passport and how to verify cultural value). We use W3C's card technology, are compatible with GS1's coding system, and focus on content standards for the vertical domain of culture and quality.

We actively seek cooperation and mutual recognition with standards organizations such as ISO, W3C, and GS1.

Q8: Can small and medium-sized producers afford it? Will it increase their burden?

This is precisely one of the core concerns of ICO standards.

Our design goal is to enable small and medium-sized producers and ICH transmitters to "afford and benefit from" the system: - Low-cost solutions: Support low-cost verification methods such as QR codes, with startup costs as low as a few cents per item; - Lightweight onboarding: SaaS-based assessment platforms are provided, requiring no technical team — usable upon registration; - Volume discounts: Discounts or waivers for small and medium-sized producers and ICH transmitters; - Capacity building: Training and technical support provided through regional nodes and partners.

We believe that the "premium for quality" effect brought by digital passports will far exceed their usage cost — helping good products command good prices is the most direct value empowerment for producers.

Q9: What about the legality and evidentiary effect of the standards?

ICO standards are themselves a set of technical and industry standards, without legal force (consistent with the nature of international standards such as those from ISO). However, their design fully considers judicial evidence requirements:

• Hash anchoring: Cryptography-based data integrity proof can serve as electronic evidence in most jurisdictions;
• Trusted timestamps: Integration with authoritative timestamp services meets the temporal certainty requirements for electronic evidence;
• Complete evidence chain: Issuance chains, change records, and revocation logs constitute a complete evidence chain;
• Third-party audits: Root nodes and core services undergo regular independent third-party audits to enhance evidentiary credibility.

Specific legal effect varies by jurisdiction. ICO encourages regional nodes to collaborate with local legal institutions to promote recognition of the evidentiary weight of DPP-CQ credentials in their respective jurisdictions.

Q10: How is the neutrality of the standards ensured? How can we be certain no single party dominates?

The multi-stakeholder governance mechanism is the institutional guarantee for standard neutrality:

• Balanced representation: Council seats are allocated by category (government 25%, industry 25%, academia 20%, civil society 20%, Technical Secretariat 10% non-voting), so no single group can dominate decision-making;
• Consensus-first: Important decisions prioritize seeking consensus rather than simple majority voting;
• Separation of technology and standards: The Technical Secretariat does not participate in standard voting, separating execution from decision-making;
• Transparency and openness: Governance processes are open and transparent, subject to community oversight;
• Open participation: Any institution may apply to join, regardless of nationality, size, or ownership structure.

How to Cite This Document

English Citation:

International Communication Organization (ICO). DPP-CQ: Digital Product Passport for Cultural & Quality Goods — Standard Architecture and Core Specifications[R]. ICO-TS-001:2026, v2.0.0-draft (Public Review Draft). August 2026. https://github.com/ICO-cloud/dpp-cq-standard

Annex F (Normative): v2.0 Interoperability & Compliance Annexes

Annex F (Normative): v2.0 Interoperability & Compliance Annexes

The following separate documents form a normative part of ICO Std 2001 v2.0. They are maintained in the repository under docs/:

Relationship to external frameworks

Published by: International Communication Organization (ICO) Document No.: ICO-TS-001:2026 Version: v2.0.0-draft Status: Public Review Draft Issued: August 2026 Comment Deadline: October 15, 2026 (second review round: international interoperability & compliance) Feedback: info@icoun.org Repository: https://github.com/ICO-cloud/dpp-cq-standard

This is a public review draft. Content is subject to change based on community feedback. The official version published by ICO shall prevail.

© 2026 International Communication Organization (ICO). This work is licensed under a Creative Commons Attribution 4.0 International License.