U.S. Bank, the fifth-largest retail bank in the United States, announced Tuesday that it is launching a cryptocurrency custody service for institutional investors, potentially setting the stage for wider mainstream acceptance of digital assets. As CNBC reported, U.S. Bank has partnered with New York Digital Investment Group, or NYDIG, to provide custody services for Bitcoin (BTC), Bitcoin Cash (BCH) and Litecoin (LTC). Gunjan Kedia, a senior executive at U.S. Bank’s wealth management and investment division, told CNBC that support for other cryptocurrencies like Ether (ETH) will be rolled out over time. Fund managers and other institutional investors have been increasing their exposure to cryptocurrencies for most of the year. Their participation has grown significantly since the May 2020 Bitcoin halving event, which triggered renewed bullish sentiment for the leading digital asset and, by extension, the broader cryptocurrency market.