Crypto exchange Kraken announced the listing of xU3O8 for trading, effective July 30, 2026. xU3O8 is a token that represents beneficial ownership of physical uranium ore concentrate (yellowcake, U₃O₈), stored in a regulated facility operated by Cameco. It utilizes decentralized ledger infrastructure and Tezos smart contract technology, with FCA-registered digital asset exchange Archax acting as trustee for investors.