HSBC has issued an announcement stating that it recently completed experimental testing for the Hong Kong Monetary Authority's "e-HKD+" project. HSBC's technical use cases in the "e-HKD+" project mainly focus on how to handle practical issues that may be encountered in the design, implementation, and operation of a digital currency ecosystem. As Hong Kong continues to explore the full potential of digital currencies, HSBC, in addition to conducting surveys on public awareness of e-HKD, has also brought new technical and business insights to the potential design of e-HKD. HSBC has conducted experiments on a range of public distributed ledger technology (DLT) environments, including Arbitrum, Ethereum, Linea, and Polygon, as well as on a private distributed ledger technology (DLT) developed by HSBC on Hyperledger Besu. These results will support the Hong Kong Monetary Authority and the industry in exploring how innovative digital currencies can create value for the Hong Kong public. [ChainCatcher]