Practitioners highlighted for a distinctive sub-specialty edge in this field — beyond the directory criteria.
European Commission · European Union
Editor's note. European Commission MiCA/DORA architect steering the 2026 MiCA effectiveness review. The most direct policy signal on where the EU crypto framework heads after the first implementation cycle.
Peter Kerstens is the European Commission's adviser on financial-sector technological innovation and cybersecurity, and is widely credited as the architect of MiCA and DORA. He co-chaired the Commission's FinTech Taskforce and led the Digital Finance Strategy that produced Regulation (EU) 2023/1114. Earlier he served as Finance Counsellor at the EU Embassy in Washington DC. As of 2026 he is steering the Commission's MiCA effectiveness review — the public consultation that runs to 31 August 2026 — and has argued the EU should prioritise tokenisation over a rushed MiCA 2.0. For operators reading where the framework goes next, Kerstens is the single most direct signal.
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New York State Department of Financial Services (NYDFS) · United States
Editor's note. NYDFS Superintendent operating the most rigorous US state-level crypto licence (BitLicense). Active policy voice on stablecoin reserves and operational supervision.
Adrienne A. Harris is Superintendent of the New York State Department of Financial Services (NYDFS), the regulator that operates the NYDFS BitLicense — the most rigorous US state-level crypto credential. Harris took the Superintendent role in January 2022. Her NYDFS tenure has overseen substantial expansion of the BitLicense framework, crypto-asset operator authorisations including major exchanges and custodians, and policy development on stablecoin reserves and operational requirements. NYDFS under Harris has been one of the most active US regulators on crypto-asset firm supervision.
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United States Senate · United States
Editor's note. Co-sponsor of GENIUS Act (US federal stablecoin framework) and broader US crypto-asset legislative architecture. Most prominent congressional voice on crypto legislation.
Cynthia M. Lummis is United States Senator from Wyoming and one of the most prominent congressional voices on crypto-asset legislation. Senator Lummis co-sponsored the GENIUS Act (Guiding and Establishing National Innovation for US Stablecoins Act of 2025), the federal stablecoin regulatory framework that took effect in the US stablecoin landscape. She has been an advocate for crypto-asset legislative clarity since entering the Senate in 2021 and is one of the principal legislative architects of the emerging US federal crypto-asset framework.
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European Banking Authority (EBA) · European Union
Editor's note. EBA Chair coordinating EU significant CASP supervision (MiCA Article 85), ART/EMT issuer framework, and AMLA development. Critical EU regulator voice on crypto-asset firm coordination.
José Manuel Campa is Chair of the European Banking Authority (EBA), the EU-level regulator responsible for ART and EMT issuer supervision coordination, significant CASP framework under MiCA Article 85, and the broader EU AML framework including the new AMLA. Campa took the EBA Chair role in March 2019. His EBA tenure spans the full MiCA legislative development and implementation phase plus the AMLR/AMLA framework development. The EBA's central role in EU crypto-asset framework operationalisation makes Campa one of the most influential EU regulator voices on crypto-asset firm supervision.
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Bundesanstalt für Finanzdienstleistungsaufsicht (BaFin) · Germany, European Union
Editor's note. BaFin President with FINMA CEO heritage. Combined Swiss-German regulator-side perspective on crypto-asset firm supervision — most-respected EU supervisor positioning.
Mark Branson is President of BaFin (Bundesanstalt für Finanzdienstleistungsaufsicht), the German financial regulator with one of the most rigorous EU supervisor approaches to crypto-asset firms. Branson took the BaFin Presidency in August 2021 after serving as CEO of FINMA (Swiss Financial Market Supervisory Authority) from 2014 to 2021. His combined Swiss-German regulator experience covers crypto-bank licensing development (SEBA, Sygnum under FINMA) and MiCA implementation in Germany (KMAG framework). The combination makes him one of the most consequential EU regulator voices on crypto-asset firm supervision.
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European Securities and Markets Authority (ESMA) · European Union
Editor's note. ESMA Chair leading EU-level crypto-asset market integrity supervision. Most influential regulator voice on MiCA significant CASP framework (Articles 92-94) and ESMA direct supervisory powers.
Verena Ross is Chair of the European Securities and Markets Authority (ESMA), the EU-level supervisor responsible for crypto-asset market integrity, MiCA coordination, and direct supervision of significant CASPs under MiCA Articles 92-94. Ross took the Chair role in November 2021 after extensive prior ESMA service including Executive Director. Her ESMA tenure spans the full MiCA legislative development, implementation, and operationalisation phase — making her one of the most influential EU regulator voices on crypto-asset framework development.
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Custodia Bank · United States
Editor's note. Architect of Wyoming SPDI framework — most-developed US state-level crypto-banking model. Federal Reserve master-account litigation shapes public-record analysis of crypto-bank regulatory access.
Caitlin Long is Founder and CEO of Custodia Bank, a Wyoming-chartered Special Purpose Depository Institution (SPDI) designed specifically for digital-asset custody and banking. Long is one of the architects of the Wyoming digital-asset regulatory framework — the most-developed US state-level crypto regulatory framework — and has been one of the most-influential industry voices on banking-system integration with crypto-assets. Her Federal Reserve master-account application litigation has shaped the public understanding of crypto-bank Federal Reserve access framework.
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Circle Internet Financial · United States, European Union
Editor's note. Regulator-to-industry transition from CFTC Chair to Circle CLO. Bridges institutional US derivatives regulation insight with stablecoin issuer compliance positioning.
Heath Tarbert is Chief Legal Officer of Circle Internet Financial — the issuer of USDC, one of the largest USD-pegged stablecoins globally. Before joining Circle in 2021, Tarbert served as Chairman of the US Commodity Futures Trading Commission (CFTC) from 2019 to 2021, where he oversaw US derivatives regulation during a period of substantial crypto-asset framework development. His move from CFTC Chair to Circle is one of the highest-profile regulator-to-industry transitions in US crypto policy and gives Circle institutional regulator-side insight that has shaped USDC's compliance positioning under MiCA, the GENIUS Act, and global stablecoin frameworks.
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US Securities and Exchange Commission · United States
Editor's note. Most influential US regulator-side voice on token-classification and the Howey test. Token Safe Harbor proposal essential primary-source reading for US securities-law analysis.
Hester Peirce is a Commissioner at the US Securities and Exchange Commission. Known publicly as "Crypto Mom" for her constructive engagement with the crypto-asset industry, Peirce has been one of the most-influential US regulator voices on token-classification, the Howey test application to crypto-assets, and the broader securities-law framework for digital assets. She proposed the influential "Safe Harbor" framework for token offerings designed to provide a regulated pathway for token network development. Her dissents on SEC enforcement actions against crypto operators have been widely cited and have shaped industry understanding of US securities-law boundaries.
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American University Washington College of Law · United States
Editor's note. Most-rigorous academic-side counterweight to industry-friendly crypto deregulation arguments. Driverless Finance essential reading on financial-stability implications.
Hilary J. Allen is Professor of Law at American University Washington College of Law and one of the most-influential academic critics of crypto-asset deregulation in the United States. Her published research and policy commentary focus on financial stability implications of crypto-asset markets, stablecoin systemic risk, and the broader question of whether crypto-asset financial infrastructure should be integrated with or quarantined from the traditional financial system. Her book "Driverless Finance" addresses the broader question of automation and financial-system stability with substantial application to crypto-asset frameworks.
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Circle Internet Financial · European Union, Germany
Editor's note. Most-visible Circle EU regulatory voice through MiCA implementation. Public commentary widely-cited on Title IV EMT pathway specifics.
Patrick Hansen is Director of Crypto Policy and Strategy at Circle Internet Financial, focused on the European Union regulatory framework for stablecoins and crypto-asset services. Hansen has been one of the most visible Circle-side voices on MiCA framework implementation, EMT issuer authorisation, and the broader EU crypto regulatory landscape through the 2023-2026 period. His public Twitter/X commentary, conference appearances, and policy analyses have been widely-cited industry references on EU crypto policy development.
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Tether Operations Limited · British Virgin Islands, European Union, United States
Editor's note. General Counsel of largest stablecoin issuer through systemic-scale growth period. Operational compliance positioning across BVI, US NYAG settlement, and EU MiCA frameworks.
Stuart Hoegner is General Counsel of Tether — the issuer of USDT, the largest stablecoin globally by issuance volume. Hoegner has held the General Counsel role since 2017 through Tether's growth from emerging stablecoin to systemic USD-denominated digital-asset payment infrastructure. His role spans regulatory engagement across multiple jurisdictions including the British Virgin Islands (Tether's primary corporate base), the United States (including the New York Attorney General settlement), the European Union (MiCA framework analysis), and the broader global supervisor environment that systemic stablecoins now operate within.
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Gide Loyrette Nouel · France, European Union
Editor's note. Ex-AMF Fintech Division founder — the rare French crypto practitioner with deep regulator-side experience plus an active private practice. Distinctive credibility under Hard Rule #24.
Franck Guiader is Head of Practice for Innovation, Digital Finance, Fintech, AI and Web3 at Gide Loyrette Nouel in Paris. Between 2011 and 2018 he was Director of the Asset Management Regulation Division at the French AMF and subsequently established and headed its Fintech, Innovation and Competitiveness division. He is one of the key architects of the Paris financial market's digital-assets framework and a leading voice on MiCA implementation in France.
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A&O Shearman · Spain, European Union
Editor's note. One of Spain's go-to fintech-regulation partners — advised on early Spanish blockchain capital-markets issuances and ranks Band 1 in Chambers Spain Fintech.
Salvador Norberto Ruiz Bachs is a Partner at A&O Shearman in Madrid and one of Spain's recognised fintech and digital-finance practitioners. He is an expert in debt capital markets, derivatives, structured finance, and financial regulation, and has advised on some of the first blockchain capital-markets issuances and ongoing crypto-currency business under the CNMV's MiCA regime.
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Linklaters LLP · Germany, European Union
Editor's note. Lead author of one of the clearest published analyses of the MiCAR / EMD2 / PSD2 interplay for stablecoin issuers — exactly the rule-set the EMT vs ART regime forces issuers to scope first.
Marius Raetz is Counsel in Linklaters' Financial Regulation Group in Frankfurt. His public work focuses on the interplay between MiCA, EMD2, and PSD2 — including a detailed analysis of the EBA's EMT no-action approach to dual MiCA / payment-services authorisation for stablecoin issuers.
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