diff --git a/schema/comments_ddl.sql b/schema/comments_ddl.sql
index 5960824..af06eb8 100644
--- a/schema/comments_ddl.sql
+++ b/schema/comments_ddl.sql
@@ -14,6 +14,7 @@ CREATE TABLE IF NOT EXISTS COMMENT (
     ParentId    TEXT                DEFAULT NULL,
     Signature   TEXT                DEFAULT NULL,
     Timestamp   INTEGER NOT NULL,
+    SigningTs   TEXT                DEFAULT NULL,
     CONSTRAINT COMMENT_PRIMARY_KEY PRIMARY KEY (CommentId) ON CONFLICT IGNORE,
     CONSTRAINT COMMENT_SIGNATURE_SK UNIQUE (Signature) ON CONFLICT ABORT,
     CONSTRAINT COMMENT_CHANNEL_FK FOREIGN KEY (ChannelId) REFERENCES CHANNEL(ClaimId)
@@ -22,7 +23,7 @@ CREATE TABLE IF NOT EXISTS COMMENT (
         ON UPDATE CASCADE ON DELETE NO ACTION  -- setting null implies comment is top level
 );
 
-ALTER TABLE COMMENT ADD COLUMN SigningTs TEXT DEFAULT NULL;
+-- ALTER TABLE COMMENT ADD COLUMN SigningTs TEXT DEFAULT NULL;
 
 -- DROP TABLE IF EXISTS CHANNEL;
 CREATE TABLE IF NOT EXISTS CHANNEL(
diff --git a/src/writes.py b/src/writes.py
index 981ad1d..d293c8c 100644
--- a/src/writes.py
+++ b/src/writes.py
@@ -16,7 +16,7 @@ def create_comment(conn: sqlite3.Connection, comment: str, claim_id: str, channe
     try:
         comment_id = insert_comment(
             conn=conn, comment=comment, claim_id=claim_id, channel_id=channel_id,
-            signature=signature, parent_id=parent_id
+            signature=signature, parent_id=parent_id, signing_ts=signing_ts
         )
         return get_comment_or_none(conn, comment_id)
     except sqlite3.IntegrityError as ie: