Murakami's studio, Kaikai Kiki, issues certificates of authenticity for the artist's editioned prints, and that gives this market something most contemporary print markets lack: a documented issuing body with a consistent format.
Prints are produced in stated editions, numbered by hand, and accompanied by studio documentation. Counterfeits reproduce the images — the flowers and the skulls above all — and are usually caught on print quality, on paper, and on the certificate's construction.
For the plush and figure releases, the reads are the same manufacturing-quality checks that apply to any vinyl or textile multiple.