diff --git a/interfaces/storage.go b/interfaces/storage.go
index 974bf94..b43020d 100644
--- a/interfaces/storage.go
+++ b/interfaces/storage.go
@@ -5,8 +5,6 @@ import "io"
 type StorageService interface {
 	Init()
 	PutFile(file io.ReadSeeker, bucket string, generateProof bool) ([]byte, error)
-	CIDExists(cid interface {
-		ToString() (string, error)
-	}) bool
+	FileExists(hash []byte) bool
 	GetHash(file io.ReadSeeker) ([]byte, error)
 }
diff --git a/storage/storage.go b/storage/storage.go
index dd63094..a7579c1 100644
--- a/storage/storage.go
+++ b/storage/storage.go
@@ -2,6 +2,7 @@ package storage
 
 import (
 	"bytes"
+	"encoding/hex"
 	"git.lumeweb.com/LumeWeb/libs5-go/encoding"
 	"git.lumeweb.com/LumeWeb/portal/db/models"
 	"git.lumeweb.com/LumeWeb/portal/interfaces"
@@ -104,16 +105,11 @@ func (s *StorageServiceImpl) createBucketIfNotExists(bucket string) error {
 	return nil
 }
 
-func (s *StorageServiceImpl) CIDExists(cid interface {
-	ToString() (string, error)
-}) bool {
-	cidStr, err := cid.ToString()
-	if err != nil {
-		return false
-	}
+func (s *StorageServiceImpl) FileExists(hash []byte) bool {
+	hashStr := hex.EncodeToString(hash)
 
 	var count int64
-	s.portal.Db().Model(&models.Upload{}).Where(&models.Upload{CID: cidStr}).Count(&count)
+	s.portal.Db().Model(&models.Upload{}).Where(&models.Upload{Hash: hashStr}).Count(&count)
 
 	return count > 0
 }