UBS completes proof-of-concept of its "UBS Key4 Gold" product on ZKsync

UBS has completed a proof-of-concept of its "UBS Key4 Gold" product on the Ethereum Layer 2 network ZKsync. UBS's Key4 Gold is one of the products launched by the bank, allowing its Swiss customers to buy physical gold directly. The purpose of the experiment is to find ways to expand the supply of gold while protecting privacy.