Yes. Nostr signatures are standardized. They're a particular type of cryptographic signature that every nostr app will recognize and accept as yours no matter which app signed your notes.

k00b

Thanks, does it mean every app using the Nostr 

 can accept signature from Alby (as opposed to storing my nsec)?

nostr

Is Sharing Private Key with Websites a Necessary Part of Using Nostr?

spiderman

Thanks, does it mean every app using the Nostr _protocol_ can accept signature from Alby (as opposed to storing my nsec)? 