Appia’s consultation findings expose a trade-off between pooling settlement liquidity and preserving competition among networks, with the architecture still open.

Christine Lagarde will step down as European Central Bank president on Feb. 7, 2027, while the Eurosystem is still weighing how to organize the infrastructure for Europe’s tokenized financial markets through its Appia initiative.

The departure announcement on Oct. 29 comes a day after the Eurosystem published Appia consultation findings that expose a basic tension: concentrating settlement money on one network could make markets more efficient, but concentrating control could make them harder to enter.

Appia is the Eurosystem’s initiative to develop an integrated ecosystem for tokenized wholesale finance, where assets are issued or represented on distributed ledgers. Its new report summarizes 127 responses and leaves the architecture open ahead of a blueprint due by 2028. The findings describe stakeholder views; the Eurosystem has expressed no architecture preference in the report.

Settlement infrastructure determines how buyers pay for assets and how transactions are completed. Appia’s architecture question is where central bank money should be available within a market built across different distributed ledger technology, or DLT, platforms.

Respondents identified advantages to putting settlement on a single network. Concentrated liquidity, common processes and simpler coordination could reduce fragmentation and duplicated investment.

The same arrangement could also concentrate activity in infrastructure with systemic importance. Respondents warned about dependence on a particular technology or vendor and weaker incentives to innovate. Pooling money would therefore solve only part of the integration problem if participants became locked into the platform that held it.

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