Slides from selected presentations are available here.

Speaker, Webinar on Cryptocurrencies as Legal Tender, hosted by Singapore Management University and University of Hong Kong Faculty of Law, September 14, 2021.

Witness, United States Senate Committee on Banking, Housing, & Urban Affairs Hearing, Cryptocurrencies: What are they good for?, July 23, 2021.

Panelist, Cryptoassets & DLT: The Legal Dimension, Conference on Cryptoassets and Financial Innovation 2021, hosted by the Swiss National Bank and University of Basel Center for Innovative Finance, May 21, 2021. Virtual

Panelist, Crypto, Exchanges and Wallets: What’s the right approach to regulation?, Conference on Hot Topics in Digital Finance, hosted by the Alliance for Innovative Regulation, May 3, 2021. Virtual

Digital “Cash” and Financial Privacy, Conference on Privacy and Personal Data Protection under Chinese and American Laws, St. Mary’s University School of Law and Beihang University School of Law, March 31, 2021. Virtual

Blockchain Emergencies & Open-Source Software Governance: Is ‘Rough Consensus’ a Suicide Pact?, The Impact of Blockchain on the Practice of Law, sponsored by the NYU Journal of Law & Business and the Classical Liberal Institute, March 25, 2021. Virtual

The Role of Ethics in Software Development, Ethics, Privacy & Data Protection in the Cyber Domain, sponsored by the Global Cyber Security Program at St. Thomas University, Jan. 29, 2021. Virtual

Panelist, Blockchain Legal Education, Stanford CodeX Blockchain Law & Policy Summit 2021, Stanford University, January 26, 2021. Virtual

Panelist, Governance in Decentralized Ecosystems, European Blockchain Convention 2020, September 22, 2020. Virtual

Panelist, The Role of Digital Payments and Cryptocurrencies in the Coronavirus Crisis, Webinar by Columbia Institute for Tele-Information, May 28, 2020. Virtual

Panelist, Fiduciary Duty and Blockchain: In Whom Do We Trust?, HLS Blockchain & Fintech Initiative 2020 Conference, Harvard Law School, Cambridge, MA, March 2, 2020.

Intermediaries Who Must Not Be Named? A Research Agenda for Crypto Miners, Distinguished Blockchain Lecture Seminar Series, Carnegie Mellon University (CyLab Security & Privacy Institute), Pittsburgh, PA, January 27, 2020.

Invited Participant, Simons Institute Workshop on Blockchain in Society: Applications, Economics, Law, and Ethics, UC Berkeley, Berkeley, CA, Nov. 18-22, 2019.

Locating “Process” in Blockchain Systems, Seminar on Blockchain & Procedural Law: Law and Justice in the Age of Disintermediation, Max Planck Institute Luxembourg for Procedural Law, Luxembourg, November 15, 2019.

Panelist, Roundtable: Digitalisation of Money and Finance: Challenges and Opportunities, at the Workshop on Digital currencies, Central Banks, and the blockchain: policy implications, hosted by Oesterreichische Nationalbank and the Bank for International Settlements, Oesterreichische Nationalbank, Vienna, Austria, October 25, 2019. (Program_CBDC).

CryptoSpeak, Keynote Speaker, ACM Conference on Advances in Financial Technologies, Zurich, Switzerland, October 21-23, 2019.

CryptoSpeak, Cryptoeconomic Systems: Field Building Summit, MIT Media Lab, Cambridge, MA, October 5-6, 2019.

Invited Participant, Peter Wall Institute for Advanced Studies International Research Roundtable on Blockchain Technology, University of British Columbia, Vancouver, June 10-12, 2019.

Deconstructing ‘Decentralization’: Exploring the Core Claim of Crypto Systems, Blockchain@UBC Annual Conference, University of British Columbia, Vancouver, June 10, 2019.

Intermediaries Who Must Not Be Named? The Role of Miners in Public Blockchains, Public Policy Conference on the Future of Financial Regulation, George Mason University Antonin Scalia School of Law, Washington, DC,  May 16, 2019.

Panelist, Software Developers as Fiduciaries, Consensus 2019, New York, NY, May 15, 2019.

Debate with Peter Van Valkenburgh, moderated by Peter McCormack, featured event at Atomic Swap Conference, New York, NY, May 15, 2019.

Invited Participant, Wharton Reg@Tech: Regulatory Approaches to Cryptocurrencies and Digital Assets, The Wharton School of the University of Pennsylvania, Philadelphia, PA, March 28-30, 2019.

Panelist, Blockchain Deathmatch: Permissioned vs Permissionless, SXSW 2019, Austin, TX, March 14, 2019.

Intermediaries Who Must Not Be Named? The Role of Miners in Public Blockchains, Research Roundtable on the Future of Financial Regulation, George Mason University Antonin Scalia School of Law, Washington, DC,  March 1, 2019.

Emerging Technologies & Social Justice: It’s Complicated, Panelist at Conference on Justice & Social Concerns – Panel on Balancing Cyber security needs with protection of human privacy: A Balancing Act?, St. Mary’s University, San Antonio, TX, February 28, 2019.

Deconstructing Decentralization: Exploring the Core Claim of Cryptoassets, Association of American Law Schools Annual Faculty Conference, Invited Speaker, Section on Securities Regulation, New Orleans, LA, January 5, 2019.

Panelist, Crypto-Law: (Re)Thinking the Nomenclature & Taxonomy, DC Fintech Week hosted by Georgetown University Institute of International Economic Law and the International Monetary Fund, Washington, DC, November 5, 2018.

Panelist, Texas Blockchain Activities &  Research Showcase, University of Texas at Austin Blockchain Initiative at McCombs School of Business, Austin, TX, October 23, 2018.

Thinking Critically About Blockchain Technologies, Business Week at St. Mary’s University Greehey School of Business, San Antonio, TX, October 3, 2018 (invited plenary speaker).

Deconstructing Decentralization: Exploring the Core Claim of CryptoassetsWorkshop on Cryptoassets and the Law, London School of Economics, London, UK, September 4, 2018.

Deconstructing Decentralization: Exploring the Core Claim of Cryptoassets, Law & Money IV – Banking in the Shadows: Fintech, Cryptocurrencies and Emerging Financial Systems, Sheffield Institute for Corporate & Commercial Law, University of Sheffield School of Law, Sheffield, UK, September 3, 2018.

The Path of the Blockchain Lexicon (and the Law), Webinar for Federal Reserve Working Group on Digital Assets and Blockchain Technologies, August 21, 2018.

Critical Thinking for Crypto Counsel, Block (Legal) Tech Conference, sponsored by The Law Lab at Chicago-Kent School of Law, Chicago, IL, August 9, 2018.

Blockchains as InfrastructureArtificial Cosmoi and the Law, Workshop hosted by UCL Centre for Law, Economics & Society, Yale Law School, & the University of Athens, Athens, Greece, July 30, 2018.

Panelist at ITU Workshop on Standardizing Digital Fiat Currency (DFC) and its Applications – Panel on Regulatory Requirements and Policy Implications for DFC, New York, NY, July 18-20, 2018.

Does Blockchain Have a Governance Problem?,  Blockchain@UBC Mini-Conference on The Future of Blockchain, Blockchain Summer Institute at the University of British Columbia, Vancouver, Canada, May 25, 2018 (invited keynote speaker).

Panelist at Smart Financial Regulation Roundtable: Implications of Cryptocurrenciessponsored by the Mercatus Center and the Institute for Financial Markets, Washington, DC, April 11, 2018.

Cryptocurrencies & Systemic Risk, Guest Lecture in Financial Crisis Seminar, UC-Irvine School of Law (remote), April 4, 2018.

Cryptocurrencies & the Law: A Whirlwind Tour, Guest Lecture to the Facultad Libre de Derecho de Monterrey, Monterrey, Mexico (remote), April 4, 2018.

Nailing Jelly to the Wall: The Challenges of Blockchain Language, Webinar for the INET Young Scholars’ Initiative Working Group on Finance, Law & Economics, March 26, 2018.

Panelist at Symposium on Innovation, Blockchain, Cryptocurrency and Artificial Intelligence 2018, sponsored by the Harvard Law School Alumni Association and the Harvard Alumni Association, New York, NY, March 21, 2018.

Cryptocurrencies and the Law: A Whirlwind Tour, Blockchain and Cryptocurrency Educational Series: Law, Regulations, Economics, and Markets; Geekdom, San Antonio, TX, March 19, 2018.

Public Blockchain Governance, Guest Lecture at NYU Law School and NYU Stern School of Business course on Digital Currencies and Blockchain Technology, New York, NY, February 12, 2018.

Cryptocurrencies as Emerging Market Sovereigns: Implications of Wall Street’s ‘Hot Money,’  Works in Progress Program on Blockchains and the Law, Cardozo Law School, New York, NY, January 26, 2018.

DLT and its applications: Revolution or evolution?, European Capital Markets Institute Annual Conference, Brussels, Belgium, November 23, 2017 (invited keynote address).

Thinking Critically About Blockchain Technology, ScotChain17, Edinburgh, Scotland, October 13, 2017 (invited plenary speaker).

Blockchain Technology and Finance: For Better or For Worse?, Annual Conference of the Center for International Securities & Derivatives Markets of Isenberg School of Management of the Univ. of Massachusetts-Amherst, Boston, MA, October 6, 2017 (invited plenary speaker).

Invited Participant, Re-Imagining Finance: The Promise of Decentralized Technologies, Workshop hosted by the Columbia Law School’s Center on Global Legal Transformation, New York, NY, September 22-23, 2017.

Open-Source Operational Risk and Public Blockchains, New Context Conference hosted by Digital Garage, Tokyo, Japan, July 26, 2017 (invited speaker).

The Fiduciaries of Public Blockchains, Blockchain and the Constitution of a New Financial Order: Legal and Political Challenges, University College London, June 19, 2017 (invited speaker).

The Path of the Blockchain Lexicon (and the Law), Symposium on The Law of FinTech: Regulating Cryptocurrency, Crowdfunding, Robo-advisors, and Digital Banking, sponsored by Boston University Review of Banking & Financial Law, Boston, MA, February 27, 2017 (solicited contribution).

Open Source Operational Risk: Should Public Blockchains Serve as Financial Market Infrastructures?, Silicon Valley Ethereum Meetup, Institute for the Future, Palo Alto, CA, January 27, 2017 (invited speaker).

Open Source Operational Risk: Should Public Blockchains Serve as Financial Market Infrastructures?, selected in competitive Call for Papers for Blockchain Protocol Analysis and Security Engineering 2017 Conference (sponsored by Stanford University Cyber Initiative), Stanford University, January 26, 2017.

Communication Problems & Systemic Risk: How Imprecise Language Could Taint System-Wide Decisions on Blockchain Technology, Association of American Law Schools Annual Faculty Conference, Winner of Call for Papers by Section on Financial Institutions and Consumer Financial Services, San Francisco, CA, January 6, 2017.

Discussant, Ferdinando M. Ametrano, Hayek Money: The Cryptocurrency Price Stability Solution, 2nd International Workshop – P2P Financial Systems 2016, University College London, September 9, 2016.

The Fiduciaries of Public Blockchains, selected in competitive Call for Papers for 2nd International Workshop – P2P Financial Systems 2016 (sponsored by Bank of England, Bank of Canada, Deutsche Bundesbank, Federal Reserve Bank of St. Louis, LOEWE Center – Sustainable Architecture for Finance in Europe, and University College London Research Centre for Blockchain Technologies), University College London, September 8, 2016.

Invited Participant, W3C Workshop – Blockchains and the Web, MIT Media Lab, Cambridge, MA, June 29-30, 2016 (position statement quoted in opening keynote address by Prof. Arvind Narayanan).

Guiding Principles for Transnational Regulatory Engagement with Blockchains, roundtable discussion with invited participants sponsored by Center for International Governance Innovation, New York, NY, May 3, 2016.

Engaging with International Regulators (moderator), Consensus 2016 (prominent blockchain industry conference), New York, NY, May 3, 2016.

Blockchains as Infrastructure, International Conference on Contracts (KCON), San Antonio, TX, February 26, 2016.

The Hidden Fiduciaries of Public Blockchains, The Federalist Society Annual Faculty Conference, Works-In Progress Presentation, New York, NY, January 9, 2016.

The Hidden Fiduciaries of Public Blockchains, Faculty Workshop, Texas A&M University School of Law, Ft. Worth, TX, December 4, 2015.

The Bitcoin Blockchain as Financial Market Infrastructure: A Consideration of Operational Risk, Symposia on Payments Machines: Digitalization, Disruption & Reform sponsored by the Modern Money Network, Columbia Law School, New York, NY, November 16, 2015.

The Hidden Fiduciaries of Public Blockchains, Texas Southern University Thurgood Marshall School of Law, Houston, TX, September 16, 2015.

The Hidden Fiduciaries of Public Blockchains, Harvard Business School Club of San Antonio, San Antonio, TX, August 4, 2015.

The Hidden Fiduciaries of Public Blockchains, Southeastern Association of Law Schools Annual Conference, New Scholar Program, Boca Raton, FL, July 31, 2015.

Invited Discussant, Banking in a Free Society, Faculty Colloquium sponsored by The Federalist Society and the John Templeton Foundation, Annapolis, MD, June 5-6, 2015.

Money: Definitions, Institutions, and the Travel of Value Across Borders, Monetary Design in Global Perspective Research Conference, part of the Institute for Global Law and Policy Biannual Conference at Harvard Law School, June 1-2, 2015 (invited participant).

Why Bitcoin Fails as Money: An Operational Risk Analysis, Conference on Governance of Emerging Technologies, Scottsdale, AZ, May 27, 2015 (selected after competitive call for papers).

Bitcoin and the Problem of Accountability, Arizona State University Legal Scholars Conference, March 15, 2014.