fix: forgotten rename

src/dbc.rs

@@ -141,7 +141,7 @@ impl Dbc {
     /// returns PublicKey for the owner's derived public key
     /// This is useful for checking if a Dbc has been spent.
     /// will return an error if the SecretKey is not available.  (not bearer)
-    pub fn key_image_bearer(&self) -> Result<PublicKey> {
+    pub fn public_key_bearer(&self) -> Result<PublicKey> {
         self.public_key(&self.owner_base().secret_key()?)
     }