The European Union’s regulatory bodies have issued new guidelines focusing on the intersection of blockchain technology and the protection of personal information.
A newly released report from the European Data Protection Board (EDPB) emphasizes the need for careful assessment of how blockchains handle data to ensure compliance with the EU’s General Data Protection Regulation (GDPR). The EDPB states that these evaluations are crucial for GDPR adherence.
According to the EDPB, evaluations should address key considerations, including:
“Does the blockchain system involve the processing of any personal data?”
“If personal data is involved, is the utilization of a blockchain truly essential for this specific processing activity? What justifies this choice, and what alternative approaches exist?”
“What type of blockchain is appropriate for the application? Could a private or permissioned blockchain suffice? Is a zero-knowledge architecture feasible for enhancing privacy?”
“What technical and organizational safeguards are implemented to protect personal data? Will personal data be stored on-chain or off-chain? Are privacy-enhancing technologies employed, and if not, why not?”
The EDPB clarifies that blockchains are not exempt from GDPR regulations and must be designed with data processing requirements in mind. To adhere to GDPR standards, the regulator suggests that, if the design of the blockchain does not account for the erasure of GDPR-relevant data, complete removal of the blockchain may be necessary.
“Personal data must be permanently deleted once it has served its intended purpose, and any mandatory retention periods have expired. This is in compliance with the principle of storage limitation.”
“Deleting specific data related to individuals on a blockchain can be complex and often requires customized, purpose-built architectures. If deletion capabilities were not incorporated from the outset, deleting the entire blockchain might become a necessary measure.”
James Smith, special projects lead at the Ethereum Foundation, commented on LinkedIn that these new EU guidelines could pose a significant challenge to the viability of public blockchains.
“Implications for Ethereum and Web3:
The very structure of public blockchains, such as Ethereum, is now under scrutiny.
Without a strong response, we risk facing a regulatory environment that demonstrates a fundamental lack of understanding regarding decentralized technology.
This goes beyond mere compliance issues. It raises questions about whether public blockchains can legally operate within Europe.”
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