Amazon QLDB does solves some of the QDPR compliance shortfalls of blockchain, for example the physical location of the data could be guaranteed. But it doesn't solve the big one: the right to full erasure, also known as the right to be forgotten. The tactics suggested by other users here, such as 'losing' the key, do not fully qualify as full erasure, just pseudo-erasure. So far, to the best of my knowledge, nobody has as yet developed a GDPR-complaint, public-facing DAO application. It's a grey area. I am working on a blockchain wallet that allows contractors and gig economy workers to request, own and administer their own employment references. The main problem we're facing is to guarantee full erasure, and to guarantee the physical domicility of data (for example,in the EU region). I was excited about QLDB but I see many problems in its current state.