Europe Moves to Rein In Blockchain Data Access With New Privacy Guidelines

The European Knowledge Safety Board has authorised draft guidelines governing how private knowledge is saved and shared on blockchains, marking one other step towards aligning decentralized expertise with present requirements.
The brand new tips restrict entry to saved data and adjust to the Basic Knowledge Safety Regulation (GDPR) protections, in line with the EDPB, which ratified the foundations this month and opened public remark till June 9.
“Blockchains have sure properties that may result in challenges when coping with the necessities of the GDPR,” the EDPB stated in a model of the rules obtainable on-line. “The rules spotlight the necessity for Knowledge Safety by Design and by Default and enough organizational and technical measures.
The doc added: “As a basic rule, storing private knowledge on a blockchain ought to be prevented if this conflicts with knowledge safety rules.”
The rules come amid ongoing considerations in regards to the safety of blockchain expertise. GDPR outlines a listing of rights for people to guard their private data.
The rules suggested organizations to implement technical and structure-wide measures early within the design phases of knowledge processing, and emphasised the significance of transparency, rectification, and erasure of non-public knowledge.
This contains accounting for the varied roles of actors concerned in separate phases of blockchain processing of non-public knowledge.
The EDPB stated that organizations ought to conduct Knowledge Safety Impression Assessments (DPIAs) earlier than processing any private knowledge utilizing blockchain expertise. That is presuming that processing is prone to lead to a excessive danger to the rights and freedoms of people.
The board urged organizations to concentrate on guaranteeing people’ private knowledge isn’t made obtainable to an “indefinite variety of individuals by default.”
Knowledge privateness consultants have combined opinions about blockchain’s function in knowledge privateness and the brand new tips.
Bryn Bennett, Senior BD at Hacken, a Ukrainian Web3 safety agency, advised Decrypt that “the EDPB’s tips are a well timed reminder that decentralization does not imply deregulation.”
“We see privateness as a part of core infrastructure—not a post-launch add-on,” Bennet stated. “Initiatives that deal with consumer knowledge casually danger each authorized blowback and safety breaches. Privateness-by-design, off-chain storage, and correct governance aren’t simply finest observe—they’re survival instruments.”
Nevertheless, in an interview with Decrypt, Harry Halpin, the founder and CEO of decentralized privateness agency Nym Applied sciences, stated that “it is a mistake to place private knowledge on the blockchain.”
“The use-cases I’ve seen, resembling digital identification methods, or worse, COVID passports, inherently violate privateness and result in authoritarianism,” Halpin stated. “Private knowledge ought to use zero-knowledge proofs off-chain and have community privateness by way of mixnets, as we use with cost data on Nym.”
He added: “It is usually a mistake to use knowledge safety legal guidelines to knowledge on the blockchain, because the ‘proper to be forgotten’ would successfully require decentralized blockchains to be mutable and censored by regulators. If that is the aim, then simply use regular centralized databases.”
Edited by Sebastian Sinclair