Blockchain and Privacy

AML/KYC

Base Layer Neutrality (Paradigm blog) -- claiming that base layer participants are not required to monitor or censor the sanctioned addresses under current OFAC guidance

by Rodrigo Seira, amyaixizhang, Dan Robinson (Sep 2022)

https://www.paradigm.xyz/2022/09/base-layer-neutrality

Tornado Cash and Blockchain Privacy: A Primer for Economists and Policymakers -- describing how Tornad Cash works, and proposing a balanced approach

by Matthias Nadler and Fabian Schär (Apr 2023)

https://research.stlouisfed.org/publications/review/2023/02/03/tornado-cash-and-blockchain-privacy-a-primer-for-economists-and-policymakers

Blockchain Censorship -- quantitative reasearch on how censorshipi affects on neutrality and security

Anton Wahrstätter et al. (Jun 2023)

https://arxiv.org/abs/2305.18545

Blockchain Privacy and Regulatory Compliance: Towards a Practical Equilibrium -- proposing a smart contract-based privacy-enhancing protocol allowing users to publish a zero-knowledge proof, demonstrating that their funds originate from known lawful sources, without publicly revealing their entire transaction graph.

by Vitalik Buterin et al. (Sep 2023)

https://papers.ssrn.com/sol3/papers.cfm?abstract_id=4563364

ZKP

An Introduction to Zero-Knowledge Proofs in Blockchains and Economics -- explaining how ZKP works and their applications, data confidentiality and efficiency

by by Aleksander Berentsen et al. (Oct 2023)

https://research.stlouisfed.org/publications/review/2023/05/12/an-introduction-to-zero-knowledge-proofs-in-blockchains-and-economics

"Being private about personal characteristics is one example where ZKPs could be used for data confidentiality. As an example, Carlos wants to prove at the entrance of a nightclub that he is 18 without revealing his exact age or any other personal characteristic. Judy wants to enter a fancy club she has a membership to but does not want the doorman to know who she is."

GDPR

Blockchain and the General Data Protection Regulation -- rigorous study to clarify the tension between blockchain and the GDPR, and how blockchain may help achieving GDPR objectives, suggesting policy options

by European Parliamentary Research Service Scientific Foresight Unit (Jul 2019)

https://www.europarl.europa.eu/RegData/etudes/STUD/2019/634445/EPRS_STU(2019)634445_EN.pdf

Singapore

GUIDE ON PERSONAL DATA PROTECTION CONSIDERATIONS FOR BLOCKCHAIN DESIGN -- addressing considerations and recommendations associated with storing personal data related to blockchains

by Personal Data Protection Commission (PDPC) Singapore (July 2022)

https://www.pdpc.gov.sg/Help-and-Resources/2022/07/Guide-on-Personal-Data-Protection-Considerations-for-Blockchain-Design