According to Odaily, UBS has successfully completed a proof of concept (PoC) by simulating the provision of its Key4 Gold product on ZKsync Validium in a test environment. This initiative aims to explore solutions related to scalability, cost, privacy, interoperability with Ethereum, and the ease of trading assets. ZKsync Validium, a Layer 2 blockchain solution, is designed to scale Ethereum while maintaining data privacy. It was chosen for this PoC deployment to effectively develop the network and enhance interoperability in a testing setting. UBS Key4 Gold offers Swiss retail and wealth clients the direct right to purchase physical gold, facilitating fractional gold investments.