GDPR (permanent link ->
https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=celex:32016R0679was made to protect Personal Data Information from Other Part Entities / Third Part Entity. Two conditions here
[1] ..
In order to the others principles, such as Data Portability, Right to be Forgotten, etc to be applied
you need firstly relate data stored on the blockchain to a PII ( personally identifiable information )
So my understand and interpretation is ...
data can exist forever on the blockchain as far as it not linked to a person.
Now, the tricky puzzle.
thought experiment ..
If you decide to prove your ID, lets say, by sign a message with your private keys would it not be ultimately your own responsibility since nobody
controls the
BTClockchain ? and Lets say you decide that
BTClockchian is controled by distinct entity ... who/what that entity would be ?
[1] GDPR Jargon
Controller – “means the natural or legal person, public authority, agency or other body which, alone or jointly with others, determines the purposes and means of the processing of personal data”
Processor – “means a natural or legal person, public authority, agency or other body which processes personal data on behalf of the controller”