The reason given here appears to be bullshit. Nothing stops banks from reducing settlement period with existing technology, except change is complicated. It&#x27;s already been done for foreign exchange - look up Continuous Linked Settlement.<p>BlockChain&#x27;s stand-out feature is that you don&#x27;t have to trust a central authority. As they are the central authorities in today&#x27;s system, of course banks are looking into it.