Golden Finance reported that Crypto Finance, a subsidiary of Deutsche Boerse, the operator of Germany's largest stock exchange, has signed an agreement with Commerzbank to provide trading services to the bank's corporate clients, just two weeks after the company reached a similar agreement with Switzerland's Zürcher Kantonalbank (ZKB). The two companies said in a press release on Thursday that Commerzbank will provide custody services. Commerzbank is the second largest bank in Germany by the number of branches. The trading services provided by the Deutsche Boerse unit will be aimed at German customers, initially focusing on Bitcoin and Ethereum transactions.