Is the viral campaign for ‘The Dark Knight’ (2008) an example of transmedia storytelling?

The viral campaign for 2008’s The Dark Knight was incredibly innovative for its time. Is it, though, an example of transmedia storytelling?

Core readings and references

1. http://remixtheory.net/?p=444
2. Giovagnoli, Max. (2011). ‘Chapter 2: Plan Transmedia.’ In T​ransmedia Storytelling: Imagery, shapes and techniques,​pp. 34-54. Halifax, Canada: ETC Press.
3. Manovich, Lev. (2001). ‘The database.’ In T​he language of new media.​Cambridge, USA: The MIT Press, pp. 218-243.