Publications

Peer-reviewed Papers:

ADESS: A Proof-of-Work Blockchain Protocol to Deter Double-Spend Attacks (2024) 

Authors: Daniel Aronoff, Isaac Ardis

APA Citation: Aronoff, D., Ardis, I. (2024). ADESS: A Proof-of-Work Protocol to Deter Double-Spend Attacks. In: Arai, K. (eds) Advances in Information and Communication. FICC 2024. Lecture Notes in Networks and Systems, vol 920. Springer, Cham. https://link.springer.com/chapter/10.1007/978-3-031-53963-3_11

Hamilton: A High-Performance Transaction Processor Designed for Central Bank Digital Currencies (2023)

Authors: James Lovejoy, Cory Fields, Madars Virza, Tyler Frederick, David Urness, Kevin Karwaski, Anders Brownworth, Neha Narula

APA Citation: Lovejoy, J., Fields, C., Virza, M., Frederick, T., Urness, D., Karwaski, K., Brownworth, A. & Narula, N. (2023). Hamilton: A High-Performance Transaction Processor for Central Bank Digital Currencies. 20th USENIX Symposium on Networked Systems Design and Implementation (NSDI 23). https://www.usenix.org/conference/nsdi23/presentation/lovejoy

Double-Spend Counterattacks: Threat of Retaliation in Proof-of-Work Systems (2020) 

Authors: Daniel J. Moroz, Daniel J. Aronoff, Neha Narula, David C. Parkes 

APA Citation: Moroz, D. J., Aronoff, D. J., Narula, N., & Parkes, D. C. (2020). Double-Spend Counter-Attacks: Threat of Retaliation in Proof-of-Work Systems. Cryptoeconomic Systems, 0(1). https://cryptoeconomicsystems.pubpub.org/pub/cb2oh2jw

Clockwork:  An Exchange Protocol for Proofs of Non Front-Running (2020) 

Authors: Dan Cline, Thaddeus Dryja, Neha Narula

APA Citation: Cline, D., Dryja, T., & Narula, N. (2020). Clockwork: an exchange protocol for proofs of non front-running. The Stanford Blockchain Conference.

Responsible Vulnerability Disclosure in Cryptocurrencies (2020)

Authors: Rainer Böhme, Lisa Eckey, Tyler Moore, Neha Narula, Tim Ruffing, Aviv Zohar

APA Citation: Böhme, R., Eckey, L., Moore, T., Narula, N., Ruffing, T., & Zohar, A. (2020). Responsible Vulnerability Disclosure in Cryptocurrencies. Communications of the ACM, 63(10), 62-71. https://cacm.acm.org/research/responsible-vulnerability-disclosure-in-cryptocurrencies/

Going from bad to worse: from Internet voting to blockchain voting

Authors: Sunoo Park, Michael Specter, Neha Narula, Ronald L Rivest

APA Citation: Park, S., Specter, M., Narula, N., & Rivest, R. L. (2021). Going from bad to worse: from internet voting to blockchain voting. Journal of Cybersecurity, 7(1), tyaa025l,
https://doi.org/10.1093/cybsec/tyaa025

Cryptanalysis of Curl-P and Other Attacks on the IOTA Cryptocurrency (2020)

Authors: Ethan Heilman, Neha Narula, Garrett Tanzer, James Lovejoy, Michael Colavita, Madars Virza, Tadge Dryja

APA Citation: Heilman, E., Narula, N., Tanzer, G., Lovejoy, J., Colavita, M., Virza, M., & Dryja, T. (2020). Cryptanalysis of Curl-P and Other Attacks on the IOTA Cryptocurrency. IACR
Transactions on Symmetric Cryptology, 2020(3), 367-391. https://doi.org/10.13154/tosc.v2020.i3.367-391

A Lower Bound for Byzantine Agreement and Consensus for Adaptive Adversaries using VDFs (2020)

Authors: Thaddeus Dryja, Quanquan Liu, Neha Narula

APA Citation: Dryja, T., Liu, Q. C., & Narula, N. (2020). A Lower Bound for Byzantine Agreement and Consensus for Adaptive Adversaries using VDFs. CoRR abs/2004.01939. https://arxiv.org/pdf/2004.01939

On the Financing Benefits of Supply Chain Transparency and Blockchain Adoption (2020)

Authors: Jiri Chod, Nikolaos Trichakis, Gerry Tsoukalas, Henry Aspegren, Mark Weber

APA Citation: Chod, J., Trichakis, N., Tsoukalas, G., Aspegren, H., & Weber, M. (2020). On the Financing Benefits of Supply Chain Transparency and Blockchain Adoption. Management Science 66(10):4378-4396. https://doi.org/10.1287/mnsc.2019.3434

Compelled Decryption and the Fifth Amendment: Exploring the Technical Boundaries (2018)

Authors: Aloni Cohen, Sunoo Park

APA Citation: Cohen, A., & Park, S. (2018). Compelled Decryption and the Fifth Amendment: Exploring the Technical Boundaries. Harv. JL & Tech., 32, 169. https://jolt.law.harvard.edu/assets/articlePDFs/v32/32HarvJLTech169.pdf

The Impact of Blockchain Technology on Finance: A Catalyst for Change (2018)

Authors: Michael Casey, Jonah Crane, Gary Gensler, Simon Johnson, Neha Narula

APA Citation: Casey, M, J Crane, G Gensler, S Johnson and N Narula (eds) (2018), ‘Geneva 21: The Impact of Blockchain Technology on Finance: A Catalyst for Change‘, CEPR Press, Paris & London. https://cepr.org/publications/books-and-reports/geneva-21-impact-blockchain-technology-finance-catalyst-change

Practical Accountability of Secret Processes (2018)

Authors: Jonathan Frankle, Sunoo Park, Daniel Shaar, Shafi Goldwasser, Daniel Weitzner

APA Citation: Frankle, J., Park, S., Shaar, D., Goldwasser, S., & Weitzner, D. (2018). Practical Accountability of Secret Processes. In 27th USENIX Security Symposium (USENIX Security 18) (pp. 657-674). https://www.usenix.org/conference/usenixsecurity18/presentation/frankie

It wasn’t me! Repudiability and Unclaimability of Ring Signatures (2018)

Authors: Sunoo Park, Adam Sealfon

APA Citation: Park, S., & Sealfon, A. (2019). It wasn’t me! Repudiability and claimability of ring signatures. In Advances in Cryptology–CRYPTO 2019: 39th Annual International Cryptology Conference, Santa Barbara, CA, USA, August 18–22, 2019, Proceedings, Part III 39 (pp. 159-190). Springer International Publishing. https://link.springer.com/chapter/10.1007/978-3-030-26954-8_6

Static-Memory-Hard Functions, and Modeling the Cost of Space vs. Time (2018)

Authors: Thaddeus Dryja, Quanquan Liu, Sunoo Park

APA Citation: Dryja, T., Liu, Q. C., & Park, S. (2018). Static-memory-hard functions, and modeling the cost of space vs. time. In Theory of Cryptography: 16th International Conference, TCC 2018, Panaji, India, November 11–14, 2018, Proceedings, Part I 16 (pp. 33-66). Springer International Publishing. https://eprint.iacr.org/2018/205.pdf

zkLedger: Privacy-Preserving Auditing for Distributed Ledgers (2018)

Authors: Neha Narula, Willy Vasquez, Madars Virza

APA Citation: Narula, N., Vasquez, W., & Virza, M. (2018). zkLedger:Privacy-Preserving Auditing for Distributed Ledgers. In 15th USENIX symposium on networked systems design and implementation (NSDI 18) (pp. 65-80). https://www.usenix.org/system/files/conference/nsdi18/nsdi18-narula.pdf

SpaceMint: A Cryptocurrency Based on Proofs of Space (2017)

Authors: Sunoo Park, Albert Kwon, Georg Fuchsbauer, Peter Gaži, Joël Alwen, Krzysztof Pietrzak

APA Citation: Park, S., Kwon, A., Fuchsbauer, G., Gaži, P., Alwen, J., & Pietrzak, K. (2018). Spacemint: A Cryptocurrency Based on Proofs of Space. In Financial Cryptography and Data Security: 22nd International Conference, FC 2018, Nieuwpoort, Curaçao, February 26–March 2, 2018, Revised Selected Papers 22 (pp. 480-499). Springer Berlin Heidelberg. https://link.springer.com/chapter/10.1007/978-3-662-58387-6_26

Reports:

Beware the Weak Sentinel: Making OpenCBDC Auditable without Compromising Privacy (working draft)

Targeted Nakamoto: A Bitcoin Protocol to Balance Network Security and Energy Consumption (in submission)

Enhancing the Privacy of a Digital Pound with the Bank of England (2024)

Application of Programmability to Commercial Banking and Payments with JPMC (2024)

A Framework for Programmability in Digital Currency (2023) 

PARSEC: Executing Smart Contracts in Parallel (2023) - pdf of executive summary 

CBDC: Expanding Financial Inclusion or Deepening the Divide (2022) - pdf of executive summary 

Project Hamilton Phase 1 Executive Summary (2022) 

The Future of Our Money: Centering Users in the Design of Digital Currency (2021) - pdf of executive summary

51% Attacks report 5 - January 23 - February 5 reorgs (no defense) (2020)

51% Attacks report 4 - Bitcoin Gold (BTG) was 51% attacked (2020)

51% Attacks report 3 - Vertcoin (VTC) was 51% attacked (2020)

51% Attacks report 2 - Expanse (EXP) was 51% attacked (2019)

51% Attacks report 1 - Litecoin Cash (LCC) was 51% attacked (2019) 

Utreexo: A dynamic hash-based accumulator optimized for the Bitcoin UTXO set (2019)

The Decentralized Web: Defending Internet Freedom through Decentralization: Back to the Future? (2017)

Discreet Log Contracts (2017)

Student Master’s Theses:

Scaling Privacy Preserving Payments (2024)

Mitigating Undercutting Attacks: A Study on Mining and Transaction Fee Behavior (2024) 

Transformable Discreet Log Contracts (2021)

An Empirical Analysis of Chain Reorganizations and Double-Spend Attacks on Proof-of-Work Cryptocurrencies (2019)

b_verify: Scalable Non-Equivocation for Verifiable Management of Data (2017)

Auditable Private Ledgers (2016)

Code:

Visit the DCI’s Github

Blockchain Labs Working Group Reports (MIT student action lab course)

Adoption of Digital Currencies at Scale in Online Retail Payments with American Express (2021)

Wholesale CBDC: Potential Impacts to Dollar Funding Markets with Fidelity Investments (2021)

Lightning Network Interest Rate with Fidelity (2021)

Mining Pools with Fidelity (2021) 

Key Design Principles of Better Money: Examining the implications of wholesale Central Bank Digital Currency (wCBDC) on the velocity of money, transaction costs, and counterparty risk with Deloitte (2021)

Digital Identity: International Benchmarking with the Federal Reserve Bank of Boston (2021)

Onboarding individuals and organizations onto the Grant Payments Blockchain with the US Treasury: Office of Financial Innovation and Transformation (FIT) (2021)

Success Factors for a Blockchain Consortium (Blockchain Consortium with Boston Consulting Group (BCG)) (2020)

Central Bank Digital Currency (CBDC) Privacy with Boston Consulting Group (BCG) (2020)

Blockchain Based Know-Your-Customer (KYC) System for SME Customers (Know-Your-Customer (KYC) with Monetary Authority of Singapore (MAS)) (2020)

Central Bank Digital Currency (CBDC) Flowback Impact with Monetary Authority of Singapore (MAS) (2020)

Price Discovery in the Bitcoin Spot and Derivatives Markets (Spot vs. Unregulated with Fidelity) (2020)

Bitcoin and Bitcoin Derivatives with Fidelity (2020)

Choosing and Implementing an Enterprise Blockchain to Solve Supply Chain Challenges (Blockchain and AI applied to Supply Chain with ATKearney) (2019)

Traceability in Genetic Data Sharing (Healthcare Applications with Boston Consulting Group (BCG)) (2019)

Central Bank Digital Currencies and Long-Term Advancement of Financial Stability: Lessons from Two Histories (Digital Fiat Currencies with Boston Consulting Group (BCG)) (2019)

The Shipping Industry & Blockchain Interoperability (Blockchain Interoperability with Deloitte) (2019)

UTreeXO (UTreeXO Wallet with Digital Garage (DG)) (2019)

Tokenized Securities & Commercial Real Estate (Stablecoins, Decentralized Exchange and Security Tokens with Fidelity) (2019)

The Economics of Mining with Fidelity (2019)

Making the case for financial inclusion: A b_verify based solution to promote agriculture credit in Peru (Applications of b_verify with Inter-American Development Bank (IADB/IDB)) (2019)

Traceability of Agricultural Supply Chains in Latin America using Blockchain: Guidelines to implement traceability of Avocados in Columbia (Traceability of Agricultural Products in Latin America with Inter-American Development Bank (IADB/IDB)) (2019)

Oracle for Smart Cities With Use Case: Parametric Flight Delay Insurance (Trusted Oracles for Smart Cities with Monetary Authority of Singapore (MAS)) (2019)

Cryptoasset Quality Based on Source Code and Developer Dynamics (Token Quality Based on Source Code with Monetary Authority of Singapore (MAS)) (2019)

Loanchain Protocol (Social Capital and Blockchain with Nomura Research Institute (NRI)) (2019)

Privacy-preserving analytics for the securitization market: a zero-knowledge distributed ledger technology application (zkLedger: Privacy-Preserving Auditing with Deloitte) (2018)

A Stakeholder Analysis of Agricultural Finance in Ukraine: Prospects for Blockchain-based Warehouse Receipts (b_verify for Warehouse Receipts with Inter-American Development Bank (IADB/IDB)) (2018)

Network Value To Transaction Volume (NVT) Analysis (Valuing Cryptoassets with Fidelity) (2018)

Capital Formation in the Age of Blockchain (Initial Coin Offerings with Fidelity) (2018)

Does your Supply Chain Need a Blockchain? (Supply Chains with the Boston Consulting Company (BCG)) (2018)