Austria 2019 Crypto Stamp – Self-adhesive Two Part Card Stamp Souvenir Sheet MUH
Crypto Stamp – first stamp in the world to be authenticated via Blockchain technology. The stamp comes in two parts: the left part (face value & unicorn) functions as a standard stamp that can be used to send mail. The right part, on the hand, contains the credentials used to authenticate the crypto collectible via blockchain. The stamps are released in relation to some kind of blockchain game.