For what it's worth here's my little experiment in what a multisig UI might look like. It's written in python and uses QT, and was more an exercise in helping me understand multisig transactions than anything else. There are 3 parties (usually) involved, so I gave them a tab each! All three push their first button up top, generating a new address/pubkey/privkey! IRL buyer and seller would have to send their pubkeys to the arbiter, here it just happens by magic! The arbiter can now push his/her second button and create the multisig address! The buyer now funds the Multisig Address by pushing their second button, (I just stuck a hardcoded amount in there for test purposes), the seller sends the goods, buyer is happy and sends the seller their privkey by pushing their third button! (Other outcomes are possible, obviously, but I'm trying to keep this as brief as possible!) Seller recieves buyer privkey (or the arbiter privkey, however it happens) and now can access the DRK in the Multisig Address! Seller has what he needs from the other parties and combined with some voodoo on the original txid from the buyer can proceed! But first they need to enter a recieving address! Now they push the green button at the bottom! They get the txid of the retreival of the DRK from the MA to their specified address! (Doesn't quite fit in the box but it's c4498e048dbb9c0599e7344fef85f22f2b13f10b5889baa825a2d87c488cef29) Anyway, heres a screeny of this one from the explorer, 12.345tDRK sent to mhNgkX28mVKZx88sMQHzFqTf6fGv6DdE4y via txid c4498e048dbb9c0599e7344fef85f22f2b13f10b5889baa825a2d87c488cef29! If nothing else, I now have a handy tool for making supersecure multisig addresses! From start to finish (or at least where I am now) was about 10 hours work, because this is not exactly my day job, and it is not yet a fully useable real world product but there's no excuse for Darkcoin not to have some kind of useable multisig UI in the official wallet!