Jusletter IT

The Interplay of Blockchain Technologies and Data Protection

  • Autor/Autorin: Rolf H. Weber
  • Beitragsart: Blockchain
  • Region: Schweiz, EU
  • Rechtsgebiete: Blockchain, Datenschutz
  • DOI: 10.38023/e85a8001-b86f-4e40-93ef-d82253ed10eb
  • Zitiervorschlag: Rolf H. Weber, The Interplay of Blockchain Technologies and Data Protection, in: Jusletter IT 30. September 2020
The new technological infrastructures such as blockchain cause challenges in respect of compliance with the continuously stronger data protection principles around the world. Particularly the relatively strict data privacy provisions in Europe have a substantive impact on blockchain business models. This contribution analyses the manifold (but mostly not unsurmountable) tensions caused by blockchain characteristics to data protection objectives and outlines to what extent distributed ledgers can also serve as privacy-enhancing tools.

Table of contents

  • 1. Introduction
  • 2. Basic Regulatory and Technological Framework
  • 2.1. Scope of Application of Data Protection Laws
  • 2.2. Protection of Personal Data
  • 2.3. Anonymization and Pseudonymization Issues
  • 3. Controller and Processor
  • 4. Key Principles of Data Protection
  • 4.1. Lawfulness and Transparency
  • 4.2. Purpose Limitation
  • 4.3. Data Minimization and Storage Limitation
  • 4.4. Data Subjects Rights
  • 4.4.1. Right to Rectification
  • 4.4.2. Right to Erasure / Right to be Forgotten
  • 4.4.3. Right to Data Portability
  • 4.4.4. Right against Automated Data Processing
  • 5. Blockchain as a Tool for Improving Data Privacy Objectives
  • 5.1. Technological Developments
  • 5.2. Blockchain as Privacy-Enhancing Tool
  • 5.3. Policy Options
  • 6. Outlook

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