It doesn't make sense to have an airgapped signer as your main nostr signing key; it would be stupidly cumbersome just to like a post.
My demo branch in the above thread instead focused on #nip26 delegation. Your main key is protected via the airgapped signer, but you use it to authorize a delegate key to sign on your behalf for a limited time. That delegate key gets loaded as a hot key in your nostr apps. If it gets compromised, oh well, it'll eventually expire.
brilliant. A perfect solution. Thank you for all your efforts
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Unfortunately, I don't think #nip26 ever got any real adoption. Apparently the delegation complicates how relays index notes. Also the inability to revoke a delegation was seen as a problem.
oh too bad- the search continues