1 files changed, 5 insertions, 0 deletions
diff --git a/internal/hash.go b/internal/hash.go
index db55b24..0540db1 100644
--- a/internal/hash.go
+++ b/internal/hash.go
@@ -30,6 +30,11 @@ func NewHash(s string) Hash {
 	return h
 }
 
+func (h Hash) IsZero() bool {
+	var empty Hash
+	return h == empty
+}
+
 func (h Hash) String() string {
 	return hex.EncodeToString(h[:])
 }