my backup npub if my account is compromised is:
nostr:npub1m0m33zydklemnkaqfctk62phss5874rqluszlpv7zzna3m65wxsscyq7mc
not that anyone cares in my case since i have basically negative followers
this is more just to show that you should sign a note that includes an alt pubkey if you have one before you are compromised.
then there is no question later down the road of the identity of your alt
nostr:note1yl29403qqet0wlvhdftdthfj2c03dwmmdshptw2k5slnsmc9xxaqw2n4g4