News about PRIVATE KEYS

News about Private Keys

Programmatically verify that someone owns a particular ETH address, without asking for his private keys

So i'm wrapping my head around this issue. I want to verify that a user of my app owns a particular ETH address. I found out that i could use web3 to make the "signature message flow". But as far as i understand, at some point the user...

Any project/technology working on "compartmentalized permission" private keys?

Not sure how to describe this, because I didn't read about this somewhere. This just popped up as an original thought, but I'm confident someone has already thought of it and is either working on it or discovered it isn't feasible. Anyway...

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