ALEXANDRIA, Va., Feb. 3 -- United States Patent no. 12,542,021, issued on Feb. 3, was assigned to Bundesdruckerei GmbH (Berlin).
"Blockchain supported banknote" was invented by Christoph Boesch (Nuthetal, Germany), Florian Peters (Berlin), Joerg Rueckriemen (Berlin) and Piotr Szegvari (Potsdam, Germany).
According to the abstract* released by the U.S. Patent & Trademark Office: "A banknote includes a security element with a processor and a memory. A private cryptographic key of an asymmetric key pair of the banknote is stored in a protected memory area of the memory. The asymmetric key pair is assigned to a banknote-specific blockchain address in a blockchain. A payment method executed with the banknote includes receiving a payment reques...