The reason given here appears to be bullshit. Nothing stops banks from reducing settlement period with existing technology, except change is complicated. It's a

The reason given here appears to be bullshit. Nothing stops banks from reducing settlement period with existing technology, except change is complicated. It's already been done for foreign exchange - look up Continuous Linked Settlement. BlockChain's stand-out feature is that you don't have to trust a central authority. As they are the central authorities in today's system, of course banks are looking into it.