Add get_message to Proof

src/signature.rs

@@ -96,6 +96,10 @@ impl Proof {
         self.key
     }
 
+    pub fn get_message(&self) -> [u8; 32] {
+        self.message.to_byte_array()
+    }
+
     pub fn verify(&self) -> Result<()> {
         let secp = Secp256k1::verification_only();
         secp.verify_schnorr(&self.signature, &Message::from_digest(self.message.to_byte_array()), &self.key)?;