NFT Certificates and Proof of Delivery for Fine Jewelry and Gemstones Alnuaimi, Noura ; Almemari, Alanoud ; Madine, Mohammad ; Salah, Khaled ; Breiki, Hamda Al ; Jayaraman, Raja Abstract Publication: IEEE Access Pub Date: 2022 DOI: 10.1109/ACCESS.2022.3208698 Bibcode: 2022IEEEA..10j1263A