(1) a single authoritative copy of the record or records exists which is unique, identifiable and, except as otherwise provided in paragraphs (4), (5), and (6), unalterable;
(2) the authoritative copy identifies the secured party as the assignee of the record or records;
(3) the authoritative copy is communicated to and maintained by the secured party or its designated custodian;
(4) copies or revisions that add or change an identified assignee of the authoritative copy can be made only with the participation of the secured party;
(5) each copy of the authoritative copy and any copy of a copy is readily identifiable as a copy that is not the authoritative copy; and
(6) any revision of the authoritative copy is readily identifiable as an authorized or unauthorized revision.