(b) A system satisfies Subsection (a), and a person is deemed to have control of an electronic document of title, if the document is created, stored, and assigned in such a manner that:

1. (1) a single authoritative copy of the document exists which is unique, identifiable, and, except as otherwise provided in Subdivisions (4), (5), and (6), unalterable;

2. (2) the authoritative copy identifies the person asserting control as:

   1. (A) the person to which the document was issued; or
   2. (B) if the authoritative copy indicates that the document has been transferred, the person to which the document was most recently transferred;
3. (3) the authoritative copy is communicated to and maintained by the person asserting control or its designated custodian;
4. (4) copies or amendments that add or change an identified assignee of the authoritative copy can be made only with the consent of the person asserting control;
5. (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. (6) any amendment of the authoritative copy is readily identifiable as authorized or unauthorized.

   Acts 2005, 79th Leg., Ch. 122 (S.B. 1593), Sec. 1, eff. September 1, 2005.