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mortoray profile image
edA‑qa mort‑ora‑y

I was tempted to say using indexed data in the chain might be acceptable.

It has a problem though, the transaction records themselves, just with the IDs, are private data. A history of a user can be recreated without knowing their personal details just from the history of transactions. It also probably isn't too difficult to establish your real identity given enough records -- a problem with "anonymous" web records already.

 
pbouillon profile image
Pierre Bouillon • Edited

Right ! Thanks for your feedback !

Would you say that the adoption of GDPR just killed the Blockchain technology and we cannot apply it anymore as it currently is or should we focus on a way to find a compromise?

 
mortoray profile image
edA‑qa mort‑ora‑y

There are plenty of uses that don't involve user data, or that would rightly be considered a permanent part of public record.

Whether ID->DB links are sufficient will remain to be seen.

It's also unclear as to whether the right to erasure/modification applies to both public and private data. If the blockchain is never shared publically can it contain any user data?

Maybe I should expand this thought experiment as an article.