verifying the control and transfer of funds is a huge expensive process with investment banking. There are entire companies that specialize in this type of thi

verifying the control and transfer of funds is a huge expensive process with investment banking. There are entire companies that specialize in this type of thing.. for example, the one (and only) fintech application I've ever built was a MBS trading system. This is over 20 years ago, but the one component of that process that seemed to be immune from disruption was the trade-clearing process.. this was handled by BONY (Bank of NY.. according to the traders, one of only a few companies that could handle it). I don't know exactly what they did, but they took a 'tick' 1/32 or two off the top of the trade to manage the (up to) 3 day 'settlement' process which, presumably, involved authorizing, possibly insuring, the trade among the counter-parties, and ultimately transferred the funds to whoever involved. Now, I may be off-base on this (I'm sure someone will let me know here), but it seems like that's a pretty good use-case for a blockchain-like system. I think paxos.com is doing something around this too.