Back in 2012/2013 there was something called "Mt Gox codes". It was a USD transfer mechanism that was supported by Gox, btc-e, early bitfinex and others.
You could magically and instantly get a USD balance transferred from one exchange to the other. It was pretty crazy to see in operation as funds would instantly flow from Japan to Hong Kong to Russia/Bulgaria/wherever-btcE-was.
It was shut down by US authorities sometime in the Spring of 2013 as I recall. Tether is playing a similar inter-exchange roll today. At least now there is some kind of public ledger, but that may not be saying much.
It was shut down by US authorities sometime in the Spring of 2013 as I recall. Tether is playing a similar inter-exchange roll today. At least now there is some kind of public ledger, but that may not be saying much.