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Dropbox dropped the ball on security, haemorrhaging customer and third-party info.
(www.theregister.com)
This is a most excellent place for technology news and articles.
By design nothing in the chain can be altered. But of course you could have a block indicating "person X is now person Y". But you can always read that Y was at some point X (and at what point the change happened). That would not be good, as it would be a public ledger of all trans people. It would also make things like witness protection impossible because inserting a block "today in 2024, person W was born in 1974" is very suspicious
Awesome, thank you for the insight!