The European Central Bank published the outcome of the 20th meeting of the Digital Euro Scheme Rulebook Development Group, summarising progress on the digital euro scheme rulebook and associated implementation specifications. Discussions covered a proposed approach to minimum user experience requirements, dispute management, latency targets that will inform architecture decisions, and the interface and data structures for settlement and other services. Work progressed on coordination with standardisation bodies, including exploring synergies at points of interaction also discussed for instant payments. The ECB presented a framework to define minimum UX requirements intended to support a consistent user experience across payment service providers while allowing reuse of existing solutions, with RDG members highlighting the need for pragmatic compliance validation and a channel for future change requests and inquiries. On disputes, the ECB indicated it will distinguish between types of disputes in the rulebook, while latency work focused on figures for end-to-end flow TM-1.2 and included discussion of sanction checks referenced to Article 29 of the proposed digital euro regulation and alignment with the Instant Payment Regulation. Technical work included a high-level DESP interface overview with a preference for harmonised RESTful APIs and a balance-based instruction logic, plus continued experimentation on ledger data structures; offline digital euro work centred on real-time proximity P2P and point-of-sale payments without third-party involvement and with the highest level of privacy. Next steps include drafting additional rulebook content for version 0.9 after integrating expert-session findings, validating the RESTful API preference in the next workstream sprint, and validating latency figures through bilateral follow-ups with the option of another expert session. RDG members were asked to provide input on the UX framework, collect PSP data needs for business and regulatory compliance on a best-effort basis, and review the DESP interface implementation specifications draft version 0.3 and the traceability matrix addressing comments on rulebook version 0.8; the next RDG meeting is scheduled for 22 March.
European Central Bank 2025-03-11
European Central Bank publishes 20th digital euro rulebook group outcomes covering minimum UX requirements and DESP interface specifications
The European Central Bank released results from the 20th meeting of the Digital Euro Scheme Rulebook Development Group, detailing progress on the rulebook and implementation specifications. Key discussions included user experience requirements, dispute management, latency targets, and coordination with standardisation bodies. The ECB also presented a framework for consistent user experience across payment service providers and outlined next steps for rulebook development and technical validation.