ECB Launches Appia Group for Wholesale DLT Settlement
The European Central Bank has opened a call for participants in the Appia contact group, an initiative to design wholesale DLT-based settlement infrastructure for European financial markets. The move marks a concrete regulatory step toward interoperable tokenized settlement across Europe.
Yuri Konnov
Appia and its companion project Pontes were both launched by the Eurosystem in 2025. The two tracks serve distinct but complementary purposes. Pontes is the near-term bridge: it will connect market DLT platforms with the Eurosystem's existing TARGET Services, enabling settlement of tokenized assets in central bank money, with a pilot scheduled for the end of Q3 2026. Appia is the longer-horizon undertaking — a wholesale financial ecosystem designed from the ground up, with a formal blueprint due in the second half of 2028.
The Appia contact group is intended to channel structured market and public sector input into the design of that ecosystem. According to Ledger Insights coverage of the Appia consultation, the group's scope spans six building blocks: asset interoperability and standards, monetary policy and collateral management on DLT, tokenized central bank money infrastructure, cross-border and international integration, legal and regulatory frameworks, and implementation strategy. A separate public consultation closed earlier, with market and public sector feedback due by 22 April 2026.
The dual-track architecture traces directly to a decision by the ECB Governing Council in February 2025 to expand its DLT settlement initiative and approve the two-track plan. That decision followed exploratory work conducted between May and November 2024, during which 64 participants — including central banks, commercial banks, central securities depositories, and new market entrants from nine countries — carried out more than 50 trials testing interoperability solutions for wholesale central bank money settlement. According to the Digital Euro Association, the programme involved more than 50 distinct experiments before the Governing Council committed to the current structure.
The demand signal from that exploratory phase was notable. As reported by Capital Pioneer's ECB blockchain settlement coverage, ECB officials noted that within a few months of announcing the initiative in December, 64 stakeholders from nine countries had signed up to participate. The cohort included central banks, commercial banks, CSDs, and newer DLT-native market participants.
The Appia contact group call does not constitute a procurement, a regulatory mandate, or a commitment to any specific technical architecture. The ECB has not disclosed which DLT protocols or platforms will be certified for interoperability with TARGET Services under Pontes, nor has it identified which asset classes will be prioritised in the Appia blueprint process. The 2028 blueprint timeline means no finalized ecosystem design, governance framework, or legal standard will emerge from the current consultation phase. Participation in the contact group does not confer preferential access to the Pontes pilot or any regulatory approval.
What the 1 June announcement concretely establishes is a formal application window — closing 19 June 2026 — through which institutions can seek a seat in the group that will shape Appia's design. It does not launch a live settlement service, identify specific real estate or capital market asset mandates, or confirm which institutions have already been selected. The Pontes pilot remains on track for Q3 2026 as a separate, operationally distinct workstream, but the Appia blueprint process is at an early consultation stage with no finalized output committed before the second half of 2028.
