Publications

May 2022
Article

Coins for Bombs: The Predictive Ability of On-Chain Transfers for Terrorist Attacks

By: Dan Amiram, Evgeny Lyandres and Daniel Rabetti

This study examines whether we can learn from the behavior of blockchain-based transfers to predict the financing of terrorist attacks. We exploit blockchain transaction transparency to map millions of transfers for hundreds of large on-chain service providers. The... View Details

Keywords: Blockchain; Bitcoin; Accounting; AI and Machine Learning; National Security; Governing Rules, Regulations, and Reforms

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December 2019 (Revised February 2024)
Teaching Note

Ripple: The Business of Crypto and Ripple 2023

By: David B. Yoffie

The case explores Ripple CEO Brad Garlinghouse’s mission to disrupt the global payments industry by leveraging the cryptocurrency XRP. Students will learn about Bitcoin and the blockchain industry, as well as Ripple’s unique crypto business model. The case provides an... View Details

Keywords: Payment Systems; Cryptocurrency; Bitcoin; Blockchain; Fintech; Business Startups; Business Model; Disruption; Strategy

April 2022
Supplement

MicroStrategy: Accounting for Cryptocurrency (B)

By: Jonas Heese and Annelena Lobb

In early 2022, the technology firm MicroStrategy unveiled a series of letters with the SEC that questioned its accounting practices around its holdings of Bitcoin. Since 2020, the firm had shifted its strategy to include not just selling software but buying and holding... View Details

Keywords: Cryptocurrency; Bitcoin; Holding Structures; SEC; Accounting; Finance; Financial Strategy; Technology Industry

October 2017 (Revised January 2018)
Case

Bitfury: Blockchain for Government

By: Mitchell Weiss and Elena Corsi

In the Republic of Georgia, legend had it their land was a precious gift from God he had intended to keep for his mother. But over time, the land had been under intermittent threat from without and within. In 2017, the Bitfury Group, which Valery Vavilov had... View Details

April 2018 (Revised July 2018)
Case

Maersk: Betting on Blockchain

By: Rajiv Lal and Scott Johnson

In March 2018, international shipping giant Maersk is getting ready to debut a trade digitization platform. Maersk hopes the platform will help streamline global trade since shipping goods internationally is an extraordinarily complicated and inefficient process.... View Details

Keywords: Maersk; IBM; Blockchain; Shipping; Shipping Line; Trade; Bitcoin; Digitization; Container Shipping; Joint Ventures; Ship Transportation; Transportation Networks; Digital Platforms; Information Technology; Technology Adoption; Applications and Software; Shipping Industry; Technology Industry

2023
Working Paper

The Effects of Cryptocurrency Wealth on Household Consumption and Investment

By: Darren Aiello, Scott R. Baker, Tetyana Balyuk, Marco Di Maggio, Mark J. Johnson and Jason Kotter

This paper uses transaction-level data across millions of accounts to identify cryptocurrency investors and evaluate how fluctuations in individual crypto wealth affect household consumption, equity investment, and local real estate markets. We estimate an MPC out of... View Details

Keywords: Cryptocurrency; Marginal Propensity To Consume; Household Balance Sheet; Real Estate; Etherium; Bitcoin; Investment; Housing; Spending

SSRN

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17 Aug 2023
Research & Ideas

‘Not a Bunch of Weirdos’: Why Mainstream Investors Buy Crypto

in crypto’s popularity The heart of the paper sought to answer a fundamental question: Who invests in crypto? Among the findings: Booming interest in Bitcoin in 2017 drove new investors into cryptocurrency at a rate of about 10,000 people... View Details

Keywords: by Ben Rand

Spring 2015
Article

Bitcoin: Economics, Technology, and Governance

By: Rainer Böhme, Nicolas Christin, Benjamin Edelman and Tyler Moore

Bitcoin is an online communication protocol that facilitates virtual currency including electronic payments. Since its inception in 2009 by an anonymous group of developers, Bitcoin has served tens of millions of transactions with total dollar value in the billions.... View Details

Keywords: Market Platforms; Online Technology; Currency

Find at Harvard

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18 Jul 2022
Research & Ideas

After the 'Crypto Crash,' What's Next for Digital Currencies?

Recent high-profile financial meltdowns at Bitcoin, Celsius, and Terraform Labs, which together wiped out hundreds of billions in market value, helped trigger a flight from the cryptocurrency market, driving its value from $2.9 trillion last fall to less than $900... View Details

Keywords: by Christina Pazzanese, Harvard Gazette; Financial Services; Technology

June 2023
Case

Block: Creating an Ecosystem of Ecosystems

By: Lauren Cohen, Richard Ryffel, Grace Headinger and Ruoshi Qi

At Investor Day 2022, Block announced a new vision for its businesses: creating an ecosystem of ecosystems. Outside the norm for many public growth companies, Block had recently acquired a variety of new business streams in the creator economy and Bitcoin despite a... View Details

23 Sep 2014
First Look

First Look: September 23

http://www.hbs.edu/faculty/Publication%20Files/Kiatpongsan%20Norton%20PPS_31f17547-5033-401c-8ed2-ccc9b6a2b433.pdf Working Papers Bitcoin By: Böhme, Rainer, Nicolas Christin, Benjamin Edelman, and Tyler Moore Abstract—Bitcoin is an... View Details

Keywords: Sean Silverthorne

June 2021 (Revised November 2024)
Case

MicroStrategy: Accounting for Cryptocurrency

By: Jonas Heese and Annelena Lobb

On February 15, 2021, Alina Moss, an analyst who covered the technology company MicroStrategy, pondered a rise in MicroStrategy’s share price. Moss had dialed into the company earnings call. When it ended, Moss had more questions than answers. MicroStrategy had... View Details

Keywords: Cryptocurrency; Share Price; Electronic Commerce; Intangible Assets; Assets; Accounting; Financial Statements; Financial Management; Financial Reporting; Analytics and Data Science; E-commerce

March 2023
Case

Ransomware Attack at Colonial Pipeline Company

By: Suraj Srinivasan and Li-Kuan Ni

On the morning of May 7, 2021, Colonial Pipeline Company became aware that the company had been the victim of a malicious ransomware attack that had stolen and locked up company data. The extortionists demanded 75 bitcoins (worth about $4.4 million at the time) in... View Details

March 2023
Teaching Note

Ransomware Attack at Colonial Pipeline Company

By: Suraj Srinivasan and Li-Kuan Ni

Teaching Note for HBS Case No. 123-069. On the morning of May 7, 2021, Colonial Pipeline Company became aware that the company had been the victim of a malicious ransomware attack that had stolen and locked up company data. The extortionists demanded 75 bitcoins (worth... View Details

May 2022
Case

From GOP to NFT: Anthony Scaramucci and the Launch of Flatter NFT

By: Lauren Cohen, Richard Ryffel and Grace Headinger

Anthony Scaramucci, Managing Director of SkyBridge Capital, considered whether he should officially greenlight the launch of SkyBridge’s own NFT platform — Flatter NFT. He had led the investment firm to push first into Bitcoin and then Ethereum to make SkyBridge a... 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