There is Authentication and there is authorization. Does this scheme limit access to some "class" of users without knowing their identities? If it does, how do you gain access without the openid provider knowing their identity?
I heard you like ecash, so we used ecash to secure ecash mints.
Blind authentication will allow mint operators to restrict the use of their mint to only registered users, while still providing them great privacy.
This is one of the most-requested features for Cashu.
The spec is now open for discussion: https://github.com/cashubtc/nuts/pull/198
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