(a) General rule: control of electronic chattel paper. A secured party has control of electronic chattel paper if a system employed for evidencing the transfer of interests in the chattel paper reliably establishes the secured party as the person to which the chattel paper was assigned.
(b) Specific facts giving control: a system satisfies subsection (a) of this section if the record or records comprising the chattel paper are created, stored, and assigned in such a manner that:
(1) A single authoritative copy of the record or records exists which is unique, identifiable and, except as otherwise provided in subdivisions (4), (5) and (6) of this section, unalterable;