European Union and United Kingdom

4.1 MiCA: What It Covers and What It Doesn't

The Markets in Crypto-Assets Regulation, known as MiCA, entered into force in June 2023 and became fully applicable across the European Union in December 2024. It is the most comprehensive crypto-specific regulatory framework enacted by any major jurisdiction, covering the issuance, trading, and custody of crypto assets through a single regulation applicable in all 27 EU member states. For practitioners working in US tokenized securities, the first thing to understand about MiCA is what it doesn't cover.

MiCA regulates 3 categories of crypto assets: asset-referenced tokens (stablecoins backed by baskets of currencies, commodities, or other assets), e-money tokens (stablecoins backed 1:1 by a single fiat currency), and a catch-all category of other crypto assets that don't qualify as financial instruments under existing EU law. What MiCA explicitly does not cover is financial instruments as defined under MiFID II, the Markets in Financial Instruments Directive. Tokenized traditional securities, including tokenized equities, tokenized bonds, and tokenized fund shares, are financial instruments under MiFID II and remain subject to MiFID II, the Prospectus Regulation, the AIFMD, and other existing EU financial regulation. MiCA doesn't touch them.

This is the same structural pattern as the US framework: a new crypto-specific regulatory layer coexists with existing securities law, and the boundary between them is drawn by whether the instrument is a "security" (or "financial instrument" in EU parlance). Practitioners who spend time understanding MiCA thinking it governs tokenized securities are reading the wrong document. The document they need is MiFID II, the Prospectus Regulation, and the fund regulations applicable to their asset class.

What MiCA does provide that is relevant to tokenized securities practitioners is a clear regulatory framework for the stablecoins that tokenized securities platforms use as settlement currencies. A tokenized security settled in a MiCA-compliant e-money token (EUR stablecoin issued by a regulated e-money institution) has a cleaner regulatory profile than one settled in a non-compliant or unregulated stablecoin. As the tokenized securities market grows, stablecoin settlement will become increasingly important, and MiCA provides the framework that governs which stablecoins are fit for institutional use in the EU.

4.2 The DLT Pilot Regime: Live Testing in a Sandbox

The EU's DLT Pilot Regime, which entered into application in March 2023, is the mechanism through which the EU is testing tokenized securities trading and settlement in live market conditions. The Pilot allows authorized market infrastructure operators (regulated exchanges, CSDs, and investment firms) to operate DLT-based multilateral trading facilities and DLT-based settlement systems under a modified regulatory framework, with exemptions from certain MiFID II and CSDR requirements that would otherwise make DLT-based systems impractical.

The Pilot is subject to a €6 billion per operator market cap on the total market value of DLT financial instruments admitted to trading or recorded, which limits its immediate scale but allows real transactions with real market participants. Several major European financial institutions have obtained Pilot permission, including Deutsche Börse's D7 platform and SIX Digital Exchange (SDX) in Switzerland (operating under a parallel Swiss DLT framework). The Pilot is scheduled for review in March 2026, with the EU Commission expected to propose a permanent regulatory framework for DLT-based market infrastructure based on lessons learned.

The Pilot's significance is structural, not just operational. It establishes that the EU is willing to create real regulatory accommodation for tokenized securities infrastructure, not just sandbox protections. The permanent framework that follows the Pilot review will determine whether the EU becomes a leading jurisdiction for institutional tokenized securities trading.

4.3 Luxembourg: The Tokenized Fund Hub

Luxembourg's position as the dominant EU jurisdiction for fund administration makes its approach to tokenized securities particularly consequential. Luxembourg domiciles over €5 trillion in investment fund assets and is the world's second-largest fund domicile after the United States. The Commission de Surveillance du Secteur Financier (CSSF) has been among the most proactive EU regulators in providing guidance on tokenized fund structures.

The connection between Luxembourg's regulatory environment and the ERC-3643 standard is not coincidental. Tokeny, the company that developed the T-REX (Token for Regulated EXchanges) protocol and the ERC-3643 standard, is based in Luxembourg. The standard was designed to satisfy the CSSF's requirements for on-chain investor identity verification and compliant transfer restrictions, which is why it found early adoption among European fund managers. ERC-3643's on-chain identity registry (built on ERC-735) allows fund administrators to verify investor eligibility at the token contract level, matching the know-your-customer and anti-money-laundering requirements that Luxembourg fund law imposes. Euronext's 2024 acquisition of Tokeny brought ERC-3643 into the institutional mainstream; the standard is now supported by major European banks and fund administrators, and it is increasingly the institutional standard for tokenized fund shares in the EU context.

4.4 The United Kingdom: Principles Over Prescriptions

The UK Financial Conduct Authority's approach to tokenized securities reflects the UK's broader regulatory philosophy: principles-based rather than rules-based, with supervisory discretion playing a larger role than prescriptive statutory requirements. The UK's departure from the EU means that MiCA does not apply in Britain, and the FCA has developed its own framework for crypto assets and tokenized securities.

The Digital Securities Sandbox (DSS), launched by the FCA and Bank of England in 2024 under the Financial Services and Markets Act 2023, is the UK's primary mechanism for testing tokenized securities infrastructure in live market conditions. Unlike the EU DLT Pilot, the DSS allows participants to test tokenized securities trading and settlement without requiring full compliance with every existing regulatory obligation from day one, with a graduated entry process that relaxes regulatory requirements as participants demonstrate they can meet the underlying objectives those requirements serve. Several major UK financial institutions and fintech firms have entered the DSS.

The FCA's approach to classifying crypto assets for securities purposes parallels the SEC's functional analysis: the question is whether the instrument has the economic characteristics of a specified investment (the UK equivalent of a US security), regardless of the technology used to represent it. Tokenized shares are regulated as shares. Tokenized bonds are regulated as bonds. The technology is not the classification driver.

The divergence between the UK and EU frameworks is meaningful for issuers considering a European tokenized securities program. The EU's MiCA framework provides a single passport for crypto-asset services across 27 member states; a MiCA-authorized entity can operate throughout the EU without separate national authorization. The UK's post-Brexit framework offers no equivalent passport. But the UK's principles-based approach may offer more flexibility for novel tokenized securities structures that don't fit neatly into existing EU regulatory categories.

The geographic survey continues eastward. Asia-Pacific and the Middle East have produced regulatory environments that, in several cases, are more advanced than either the US or EU in specific dimensions of tokenized securities infrastructure.