Blurry Moon on Nostr: silverpill so I can query an actor and determine the actor has an elliptic curve key. ...

silverpill (npub19yg…wysk) so I can query an actor and determine the actor has an elliptic curve key. but let's say I want to sign my http with an elliptic curve key. how do you know if a remote server inbox/sharedinbox can support elliptic curves?