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DCM Core Policy Brief | PB-2026-03

Offline CBDC Portability: Assessing the Risk Matrix

DCM Core Regulatory Intelligence Unit
Publication: March 2026 | Format: 6-Page Standard

01 Executive Summary

The rapid proliferation of Fiat-Referenced Tokens (FRTs), commonly known as stablecoins, has created severe macro-financial dependencies between decentralized settlement networks and traditional banking reserves. This brief outlines the critical prudential standards mandated by the EU’s Markets in Crypto-Assets (MiCA) regulation, specifically addressing the reserve segregation rules, capital adequacy requirements for issuers of significant e-money tokens (EMTs) and asset-referenced tokens (ARTs).

We conclude that while MiCA successfully mitigates the immediate run-risk of under-collateralized stablecoins, the stringent 2% own-funds requirement for "significant" tokens will radically limit the number of viable European issuers, driving market consolidation.

02 Problem Statement

Historically, unregulated stablecoins have operated largely as shadow banks: issuing demand-deposit-like liabilities without the commensurate capital buffers or liquidity ratios required of commercial banks. When market stress occurs, doubts regarding the quality and liquidity of the underlying reserve assets (such as commercial paper or corporate bonds) can trigger sudden, cascading redeemptions—a classic "bank run."

"The existential threat of stablecoins is not their technological issuance via DLT, but the maturity and liquidity transformation they engage in without a central bank backstop."

The problem for regulators is preventing this systemic contagion from spilling over into the traditional financial system (TradFi) while not entirely stifling the efficiency of DLT-based instant settlement.

03 Policy Context

In response to these risks, the EU Parliament finalized MiCA, which establishes a bespoke prudential regime that officially activates in 2024–2025. MiCA categorizes stablecoins into two primary buckets:

1. Asset-Referenced Tokens (ARTs): Pegged to a basket of currencies or other commodities.
2. E-Money Tokens (EMTs): Pegged to a single official fiat currency (e.g., EUR, USD).

MiCA further classifies tokens as "significant" if they exceed thresholds such as €5 billion in market capitalization or 1 million transactions per day. Significant ARTs/EMTs fall under the direct supervisory purview of the EBA (European Banking Authority) rather than national competent authorities.

04 Analysis & Operational Impact

The operational impact on issuers is severe. MiCA Article 35 mandates that issuers of ARTs must hold "own funds" equal to at least 2% of the average reserve assets (3% for significant ARTs). Furthermore, the reserve composition is strictly limited.

For a stablecoin issuer with €10 billion in circulation, a 2% own-funds requirement means parking €200 million in highly liquid, low-yield core capital. Additionally, the reserve assets themselves must be bankruptcy-remote, segregated from the issuer's estate, and held at EU-licensed credit institutions or crypto-asset service providers (CASPs).

Economic Consequently: The yield generated from the reserve assets (e.g., holding short-term sovereign debt) must now outpace the opportunity cost of the idle own-funds capital, plus compliance overhead. This fundamentally kills the unprofitable, sub-scale stablecoin business model.

05 Policy Recommendations

Based on our systemic modeling of MiCA's prudential rules, we issue the following recommendations for Institutional CROs and National Competent Authorities (NCAs):

Actionable Recommendations for Regulators & Infrastructures:

  • Accelerate Tri-Party Repo Infrastructure: EU clearing houses should establish specific intraday repo facilities for stablecoin reserve assets to ensure emergency liquidity without breaking segregation rules.
  • Standardize Real-Time Proof of Reserves (PoR): NCAs should mandate that PoR attestations be cryptographically verifiable on-chain via zero-knowledge proofs (zk-SNARKs) rather than relying on delayed monthly auditor reports.
  • Revise the 1-Million Transaction Cap: The hard cap on non-EUR EMT utility transactions (1 million/day) will artificially constraint global settlement efficiency and should be replaced by a dynamic, percentage-of-GDP-based threshold.

06 References & Citations