diff --git a/pbs-api-types/src/crypto.rs b/pbs-api-types/src/crypto.rs
index eda92e23..6f931f8f 100644
--- a/pbs-api-types/src/crypto.rs
+++ b/pbs-api-types/src/crypto.rs
@@ -33,6 +33,9 @@ impl Fingerprint {
     pub fn bytes(&self) -> &[u8; 32] {
         &self.bytes
     }
+    pub fn signature(&self) -> String {
+        as_fingerprint(&self.bytes)
+    }
 }
 
 /// Display as short key ID