EUDI Wallet Interoperability Testing - Launchpad 2025, 420 Tests, HAIP 1.0, ARF

EUDI Wallets Launchpad 2025 delivered 420 successful interoperability tests across OpenID4VC standards, with HAIP 1.0 achieving 98% pass rates and ARF ensuring ecosystem-wide compatibility for December 2026 cross-border deployment.

EUDI Wallets Launchpad 2025: Brussels Testing Event

The Launchpad offers two complementary testing modes designed to validate both the correctness and interoperability of implementations. Together, these testing modes help ensure readiness for cross-border use of EUDI Wallets, providing complete validation before production deployment.

OpenID4VC HAIP 1.0: 98% Pass Rate Achievement

Testing of OpenID for Verifiable Presentations (OpenID4VP) 1.0 combined with OpenID4VC High Assurance Interoperability Profile (HAIP) 1.0 and the Digital Credentials API (DC API) achieved a 98% passing rate on 44 pairs across credential types and queries.

OpenID4VP 1.0 with HAIP 1.0 without DC API achieved a 73% passing rate on 11 pairs, while OpenID for Verifiable Credential Issuance (OpenID4VCI) testing delivered an 82% passing rate on 22 pairs.

HAIP 1.0 Publication

OpenID4VC High Assurance Interoperability Profile (HAIP) 1.0 was published on December 24, 2025, establishing the technical foundation for high-assurance digital identity verification across the EUDI Wallet ecosystem.

Technical Standards: OpenID and ISO Compliance

The testing covered complete technical standards ensuring interoperability across wallet implementations:

OpenID4VC High Assurance Interoperability Profile (HAIP) 0.4: The draft specification used during Launchpad 2025 testing (December), leading to HAIP 1.0 publication on December 24, 2025.

OpenID for Verifiable Credential Issuance 1.0 (OpenID4VCI): Standard protocol for issuing verifiable credentials to digital wallets, achieving 82% pass rates in interoperability testing.

OpenID for Verifiable Presentations 1.0 (OpenID4VP): Protocol for presenting verifiable credentials from wallets to relying parties, achieving 98% pass rates when combined with HAIP 1.0 and Digital Credentials API.

ISO/IEC 18013-5: International standard for mobile driving licenses (mDL), with testing scenarios including successful presentation of an mDL via QR code and BLE (Bluetooth Low Energy) according to ISO/IEC 18013-5 proximity presentation test cases.

Architecture Reference Framework (ARF): Ecosystem Interoperability

The EUDI Wallet Architecture and Reference Framework (ARF) defines the architecture, components, and interactions of the EUDI Wallet ecosystem, providing the technical foundation for ensuring ecosystem-wide interoperability, security, and privacy.

ARF Interoperability Goals

One of the main rationales for the ARF is to reach a high level of interoperability, achieved on different layers. On the technical level, interoperability is achieved by using common standards, protocols and technical specifications, ensuring common language for attestation Providers, Wallet Providers and Relying Parties.

The ARF specifications continue to evolve, with new versions released regularly to address emerging requirements and refine technical specifications for the wallet ecosystem.

Testing Participants: Industry and Government Collaboration

Participating organizations in recent interoperability testing included:

Mattr: Digital trust infrastructure provider contributing to credential issuance and verification testing.

Bundesdruckerei GmbH: German government technology provider bringing public sector expertise to wallet testing.

Google Wallet: Major digital wallet platform testing cross-platform interoperability.

Panasonic Connect: Technology provider contributing to hardware and software integration testing.

My Mahi and Meeco: Digital identity solution providers participating in multi-vendor interoperability validation.

Large Scale Pilots (LSP): Real-World Testing Infrastructure

Since 2023, the European Commission has supported several large-scale pilots to trial wallet use cases with public administrations and private partners across Member States. These pilots cover travel, education, social security, and payments scenarios.

Wallets capable of interoperability with at least one LSP Interoperability Testbed, or offered by government-led initiatives (such as the German EUDI Wallet Challenge or the EU Reference Wallet), participate in complete testing programs ensuring cross-border readiness.

December 2026 Deployment Timeline

Under Regulation (EU) 2024/1183, Member States must make available at least one EU Digital Identity Wallet within 24 months of the date of entry into force of the implementing acts for the wallet's core rules and PID/EAAs.

The first set of implementing regulations was published on December 4, 2024, and entered into force 20 days later. This anchors national wallet availability by late December 2026.

Coordination and Standards Development

The European Commission and Member States coordinate technical specifications and testing through the European Digital Identity Cooperation Group and ARF workstreams. This collaborative approach ensures consistent implementation across all member states.

The wallet must be interoperable and work cross-border, requiring constant work on standards and testing. Work continues on the Architecture and Reference Framework (ARF), the basis for the reference implementation of the project, with new versions of specifications released regularly.

Ensuring Cross-Border Readiness

With EUDI Wallets Launchpad 2025 completing 420 successful tests (December 10-12, Brussels), OpenID4VP 1.0 + HAIP 1.0 achieving 98% pass rates with Digital Credentials API (published Dec 24, 2025), OpenID4VCI 1.0 delivering 82% pass rates, ISO/IEC 18013-5 proximity presentation testing via QR code and BLE, ARF defining ecosystem-wide technical standards for attestation Providers, Wallet Providers, and Relying Parties, Large Scale Pilots validating real-world use cases (travel, education, social security, payments), and December 2026 deployment deadline anchored by Regulation (EU) 2024/1183, the EUDI Wallet ecosystem demonstrates strong interoperability testing infrastructure.

The combination of multi-vendor testing (Mattr, Bundesdruckerei, Google Wallet, Panasonic Connect, My Mahi, Meeco), two complementary testing modes (correctness and interoperability validation), ongoing ARF specification evolution, European Digital Identity Cooperation Group coordination, and high interoperability success rates positions the EUDI Wallet for smooth cross-border operation from December 2026 — ensuring German citizens can use credentials in France, Italians in Netherlands, and all EU citizens can access digital services across member states with confidence in technical compatibility.