Something like that yes. But with the difference of intentionally linking the master and the children.

So, it works as the BIP 85? From one pair of keys, you can generate child keys...

Bitcoiner1

Ideally, one would generate a master private key in a cold wallet and then use that one to sign subkeys that could ne used from a browser extension and with a limited validity period. If compromised, just sign a revokal and a new subkey with the master one.

Does something like this exist? In PGP there's something like that.

nostr

My Nostr keys are in a Hot wallet?

Ideally, one would generate a master private key in a cold wallet and then use that one to sign subkeys that could ne used from a browser extension and with a limited validity period. If compromised, just sign a revokal and a new subkey with the master one.

Does something like this exist? In PGP there's something like that.