Driven by high demand, Japan witnessed its biggest digital corporate bond issuance. What Happened: Hitachi (OTCMKTS: HTHIY) issued the five-year green bonds with a coupon rate of 0.598%, Bloomberg reported. Nippon Life Insurance revealed that it purchased half of the $68 million offering. The bond issuance is the second one targeting corporates after the Japan Exchange Group launched ¥500 million in digital bonds in June 2022. Emiri Matsuo of Hitachi’s treasury division financing department said that life insurers, central public institutions, and other corporates also acquired the securities….