diff --git a/atproto.py b/atproto.py
index 1f32675..035de77 100644
--- a/atproto.py
+++ b/atproto.py
@@ -178,7 +178,9 @@ class ATProto(User, Protocol):
             # None here? or do we need this path to return BF's URL so that we
             # then create the DID for non-ATP users on demand?
 
-        if obj.as1:
+        # don't use Object.as1 if bsky is set, since that conversion calls
+        # pds_for, which would infinite loop
+        if not obj.bsky and obj.as1:
             if owner := as1.get_owner(obj.as1):
                 if user_key := Protocol.key_for(owner):
                     if user := user_key.get():
diff --git a/tests/test_atproto.py b/tests/test_atproto.py
index 7dc7355..02e1f04 100644
--- a/tests/test_atproto.py
+++ b/tests/test_atproto.py
@@ -156,6 +156,14 @@ class ATProtoTest(TestCase):
         got = ATProto.pds_for(Object(id='at://did:plc:user/co.ll/123'))
         self.assertEqual('https://some.pds', got)
 
+    def test_pds_for_bsky_record_stored_did(self):
+        # check that we don't use Object.as1, which would cause an infinite loop
+        self.assertIsNone(ATProto.pds_for(Object(id='at://did:bob/coll/post', bsky={
+            '$type': 'app.bsky.feed.post',
+            'uri': 'at://did:bob/coll/post',
+            'cid': 'my sidd',
+        })))
+
     @patch('requests.get', return_value=requests_response(DID_DOC))
     def test_pds_for_fetch_did(self, mock_get):
         got = ATProto.pds_for(Object(id='at://did:plc:user/co.ll/123'))