KfW, Germany's largest development bank, has partnered with Boerse Stuttgart Digital (BSD) as an infrastructure provider to prepare for the upcoming blockchain-based digital bond issuance. KfW plans to issue bonds under the German Electronic Securities Act (eWpG) in the coming weeks. The BSD will be responsible for managing crypto wallets and protecting private keys during the issuance and redemption process. The upcoming bond offering will be part of the European Central Bank's experiment to settle blockchain-based transactions using central bank money.