diff --git a/db.py b/db.py
index f1c5af06..2c3e89d2 100644
--- a/db.py
+++ b/db.py
@@ -928,26 +928,26 @@ async def _save_block(self, block: Block):
                                                 "VALUES (%s, %s, %s)",
                                                 (vertex_db_id, str(signature), sig_index)
                                             )
-
-                                    prev_cert_ids = certificate.batch_header.previous_certificate_ids
-                                    await cur.execute(
-                                        "SELECT v.id, batch_certificate_id FROM dag_vertex v "
-                                        "JOIN UNNEST(%s::text[]) WITH ORDINALITY c(id, ord) ON v.batch_certificate_id = c.id "
-                                        "ORDER BY ord",
-                                        (list(map(str, prev_cert_ids)),)
-                                    )
-                                    res = await cur.fetchall()
+                                    #
+                                    # prev_cert_ids = certificate.batch_header.previous_certificate_ids
+                                    # await cur.execute(
+                                    #     "SELECT v.id, batch_certificate_id FROM dag_vertex v "
+                                    #     "JOIN UNNEST(%s::text[]) WITH ORDINALITY c(id, ord) ON v.batch_certificate_id = c.id "
+                                    #     "ORDER BY ord",
+                                    #     (list(map(str, prev_cert_ids)),)
+                                    # )
+                                    # res = await cur.fetchall()
                                     # temp allow
                                     # if len(res) != len(prev_cert_ids):
                                     #     raise RuntimeError("dag referenced unknown previous certificate")
-                                    prev_vertex_db_ids = {x["batch_certificate_id"]: x["id"] for x in res}
-                                    adj_copy_data: list[tuple[int, int, int]] = []
-                                    for prev_index, prev_cert_id in enumerate(prev_cert_ids):
-                                        if str(prev_cert_id) in prev_vertex_db_ids:
-                                            adj_copy_data.append((vertex_db_id, prev_vertex_db_ids[str(prev_cert_id)], prev_index))
-                                    async with cur.copy("COPY dag_vertex_adjacency (vertex_id, previous_vertex_id, index) FROM STDIN") as copy:
-                                        for row in adj_copy_data:
-                                            await copy.write_row(row)
+                                    # prev_vertex_db_ids = {x["batch_certificate_id"]: x["id"] for x in res}
+                                    # adj_copy_data: list[tuple[int, int, int]] = []
+                                    # for prev_index, prev_cert_id in enumerate(prev_cert_ids):
+                                    #     if str(prev_cert_id) in prev_vertex_db_ids:
+                                    #         adj_copy_data.append((vertex_db_id, prev_vertex_db_ids[str(prev_cert_id)], prev_index))
+                                    # async with cur.copy("COPY dag_vertex_adjacency (vertex_id, previous_vertex_id, index) FROM STDIN") as copy:
+                                    #     for row in adj_copy_data:
+                                    #         await copy.write_row(row)
 
                                     tid_copy_data: list[tuple[int, str, int, Optional[str], Optional[str]]] = []
                                     for tid_index, transmission_id in enumerate(certificate.batch_header.transmission_ids):