yes absolutely. In my scifi utopia, the government provides a digital identity to each citizen as a social service :) One of the downsides of this is that it a

yes absolutely. In my scifi utopia, the government provides a digital identity to each citizen as a social service :) One of the downsides of this is that it actually degrades privacy by improving private institutions (and the governments) ability to track you. One way I've thought of to get around this is to allow people to spawn new identities from their own root identity. This could allow a certain amount of anonymity, while allowing institutions to filter identities by requiring a certain amount of social proof (e.g. length of time since identity has been created). Some services might ban non-root identities (e.g. banks), while others (like a bar) just needs to be able to trust that you have a valid ID and can be used to prove you're over a certain bio age. In the event that you need to prove you own a specific ID, there could be a way that given a root ID and a non-root ID, you re-generate the non-root ID from the root - thus proving you own it.