SmartStamp Collaborates with Frieze Seoul, Metagolden, and Digivault Timed to launch of new SmartStamp app https://artdaily.cc/news/149427/SmartStamp-Collaborates-with-Frieze-Seoul--Metagolden--and-Digivault-Timed-to-launch-of-new-SmartStamp-app#.Y9U4lnbMIuU