Feedback from Polkadot Blockchain Academy (CESS Sharing 240122)

[jimmychu0807]

In Polkadot Blockchain Academy CESS sharing, I met with students with following feedback:

1. Talked to a student in healthcare industry. They care a lot about the patient record privacy. There is a policy that the record is only kept for a certain period (say 180 days) and afterward have it deleted. Can we have a Proof of Deletion that certain user data has been deleted?
2. This request is related to the above. To fulfill Europe GDPR policy, the website/app owner has to confirm user data is removed when the user data is expired. Is it possible to set the lifetime of the data (like 90 days), and when the lifetime of the data is reached, the data is deleted and generate a proof for that?
3. CDN is a hard problem to solve it well, as you need to setup edges globally. Firms like Akamai have poured billions of dollars in building a good CDN network. Will you consider experimenting/leveraging the existing (centralized) CDN solutions in building your CDN layer?