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- April 2025
- Case
Sharon Goldberg and BastionZero
By: Jeffrey J. Bussgang, James Barnett and Maxim Pike Harrell
In December 2023, BastionZero co-founder and CEO Sharon Goldberg considered her startup’s future. Established in 2017 as a blockchain company focused on improving the security of cryptocurrency trading, in March 2020 the VC-backed startup shifted focus to a new... View Details
- April 2025
- Article
An Anatomy of Crypto-Enabled Cybercrimes
By: Will Cong, Campbell Harvey, Daniel Rabetti and Zong-Yu Wu
The advent of cryptocurrencies and digital assets holds the promise of improving financial systems by offering cheap, quick, and secure transfer of value. However, it also opens up new payment channels for cybercrimes. Assembling a diverse set of public on- and... View Details
- February 2025 (Revised March 2025)
- Case
Accounting for Bitcoin at Block
By: Charles C.Y. Wang, Seil Kim and Sa-Pyung Sean Shin
Abstract: This case explores Block Inc.'s accounting practices for Bitcoin transactions and their impact on financial reporting. Following a 10% stock price drop after missing revenue estimates in Q3 2024, Block faced scrutiny over its Bitcoin-driven revenue model.... View Details
- 2025
- Working Paper
Tax Planning, Illiquidity, and Credit Risks: Evidence from DeFi Lending
By: Lisa De Simone, Peiyi Jin and Daniel Rabetti
This study establishes a plausible causal link between tax-planning-induced illiquidity and credit risks in lending markets. Exploiting an exogenous tax shock imposed by the Internal Revenue Service (IRS) on cryptocurrency gains, along with millions of transactions in... View Details
- November 2024
- Teaching Note
Mercado Bitcoin: M&A, IPO, or Series B?
By: Raymond Kluender, Emanuele Colonnelli and Sabrina Howell
Teaching Note for HBS Case No. 825-047. In April 2021, Brazilian cryptocurrency platform Mercado Bitcoin, had to decide how to scale: go public, M&A with a bank, or take a VC big check. In a highly volatile market, Roberto Dagnoni, chairman of the board, viewed the... View Details
Keywords: Cryptocurrency; Mergers and Acquisitions; Business Growth and Maturation; Business Startups; Decision Making; Going Public; Ownership Stake; Strategic Planning; Venture Capital; Problems and Challenges; Business Cycles; Digital Platforms; Emerging Markets; Market Timing; Expansion; Diversification; Valuation; Value Creation; Investment Funds; Initial Public Offering; Price; Price Bubble; Negotiation Offer; Information Technology Industry; Financial Services Industry; Brazil; Latin America
- October 2024
- Teaching Note
El Salvador: Launching Bitcoin as Legal Tender
By: Laura Alfaro
Teaching Note for HBS Case No. 322-055. In June 2021, Nayib Bukele, El Salvador’s president, surprised the world with the announcement that the country would adopt bitcoin as legal tender, becoming the first nation to do so. Bitcoin was mostly used for trading and had... View Details
- September 2024 (Revised March 2025)
- Supplement
Wemade: (Re)Establishing Trust in Blockchain Games (B)
By: Jung Koo Kang, Charles C.Y. Wang, David Allen and Kwangmoon So
This supplement reviews Wemade's efforts to rebuild confidence in its business after its WEMIX coin was delisted from the major South Korean cryptocurrency exchanges on December 8, 2022. It outlines Wemade's strategy of transparency, which included partnerships with... View Details
- August 2024 (Revised November 2024)
- Case
Mercado Bitcoin: M&A, IPO, or Series B?
By: Raymond Kluender, Emanuele Colonnelli, Sabrina T. Howell and Karina Souza
In April 2021, Brazilian cryptocurrency platform Mercado Bitcoin had to decide how to scale: go public, M&A with a bank, or take a VC big check. In a highly volatile market, Roberto Dagnoni, chairman of the board, viewed the unprecedent crypto momentum as a window of... View Details
Keywords: Cryptocurrency; Mergers and Acquisitions; Business Growth and Maturation; Business Startups; Decision Making; Going Public; Ownership Stake; Strategic Planning; Venture Capital; Problems and Challenges; Business Cycles; Digital Platforms; Emerging Markets; Market Timing; Expansion; Diversification; Valuation; Value Creation; Investment Funds; Initial Public Offering; Price; Price Bubble; Negotiation Offer; Financial Liquidity; Information Technology Industry; Financial Services Industry; Latin America; South America; Brazil; Sao Paulo; United States
- July 2024
- Case
Stellar Development Foundation
By: Shai Benjamin Bernstein, Scott Duke Kominers and George Gonzalez
Blockchain pioneer Stellar Development Foundation oversees one of the earliest and largest crypto networks (Stellar) and the management of its native token XLM. The foundation partnered with cross-border payments provider MoneyGram to help on and off-ramp... View Details
- June 2024 (Revised March 2025)
- Case
Wemade: (Re)Establishing Trust in Blockchain Games (A)
By: Jung Koo Kang, Charles C.Y. Wang, David Allen and Kwangmoon So
This case explores the fundamental challenges and accounting issues arising from the integration of blockchain technology into traditional business models. It features Wemade, a South Korean online gaming company that has staked its future on blockchain-based games.... View Details
- February 9, 2024
- Article
The Rise of Consumer Crypto
By: Steve Kaczynski and Scott Duke Kominers
Although non-fungible tokens are often misunderstood and even derided, they remain a general and flexible solution for establishing and tracking ownership in the digital domain. As a superior solution to existing technology in many areas of the consumer economy, their... View Details
- February 2024 (Revised April 2024)
- Case
Uniswap: Fighting a Vampire Attack (A)
By: Shikhar Ghosh, Shweta Bagai and Liang Wu
This is the first of a three-case series that explores the challenges faced by Uniswap, a key player in the decentralized finance (DeFi) sector. Founded by Hayden Adams, the case traces Uniswap's rapid growth from a simple idea inspired by a Reddit post to becoming one... View Details
Keywords: Blockchain; Cryptocurrency; Crypto Economy; Community; Decentralization; Decentralized Exchange; Decentralized Finance; Open Platforms; Open-source Innovation; Market Distruption; Stablecoin; Vampire Attack; Web3; Token; Digital Platforms; Entrepreneurship; Governance; Technological Innovation; Competitive Strategy; Financial Liquidity; Financial Services Industry; Technology Industry; United States
- November–December 2023
- Article
Tax-Loss Harvesting with Cryptocurrencies
By: Lin William Cong, Wayne Landsman, Edward Maydew and Daniel Rabetti
We describe the taxation landscape in the cryptocurrency markets, especially concerning U.S. taxpayers, and examine how recent increases in tax scrutiny have led to changes in crypto investors' trading behavior. We argue conceptually and then empirically document that... View Details
- November 2023
- Case
Will Fintechs and Central Banks Play in Emtech's Sandbox?
By: Daniel Isenberg and William R. Kerr
In February 2023, Emtech’s founder Carmelle Cadet is facing a dilemma. Rapidly running out of cash, Cadet has a term sheet from a leading VC but has a choice of how to structure the investment. The decision will have significant implications for Cadet’s own stake, as... View Details
- November 2023 (Revised April 2024)
- Case
Celsius Network Inc.: Fear, Uncertainty, and Doubt in the Brave New World of Crypto Bankruptcy
By: Stuart C. Gilson and Sarah L. Abbott
In July 2022, Celsius Network filed for Chapter 11 bankruptcy. CEO Alex Mashinsky acknowledged that Celsius had grown its assets “faster than the Company was prepared to deploy [them]” and as a result had made “certain poor asset deployment decisions.” Two months after... View Details
- October 2023
- Case
Kevin O'Leary: Building a Brand in Shark-infested Waters
By: Reza Satchu and Patrick Sanguineti
For more than fifteen years, successful Canadian entrepreneur and investor Kevin O’Leary had developed his brand into a global powerhouse. Since his first appearance on the Canadian television program Dragons’ Den in 2006 and his meteoric rise to stardom through the... View Details
- September 2023
- Case
The Rise and Fall of FTX
In November 2022, Sam Bankman-Fried's multi-billion-dollar crypto exchange, FTX, collapsed, wiping out investors and throwing the crypto industry into disarray. As FTX's founder and CEO, Bankman-Fried developed a reputation for his unerring business sense and... View Details
- September 2023
- Case
Diamond Standard
By: Lauren H. Cohen, Zhaoheng Gong and Grace Headinger
Cormac Kinney, Founder and CEO of Diamond Standard, was on a mission to transform the U.S. diamond market through unlocking the precious gems as market-traded assets. As a serial FinTech entrepreneur, he hoped to add an additional service to his vault: Carats. The... View Details
Keywords: Tokenization; Fintech; Cryptocurrency; Liquidity; Digital; Rare Earth Minerals; Decentralized; Crypto Economy; Financial Product; Metals; Diamonds; Commodity; Assets; Financial Instruments; Financial Institutions; Financial Markets; Investment; Technological Innovation; Natural Resources; Business Startups; Currency; Financial Services Industry; United States
- August 2023
- Case
Ripple 2023
By: David B. Yoffie, Andy Wu and Sarah von Bargen
This case covers Ripple’s events from 2020–2023. The focus of this case is Ripple’s 2023 victory over the SEC, which sued Ripple in 2020 claiming that they did not register their XRP coins as securities. After Ripple’s victory, CEO Garlinghouse faced numerous... View Details