well that is fascinating
amongst the possy remarks there may be truth .....
Charlie Shrem of bit coin 'fame' did time for operating a money transmitting system widdout a licence
http://markets.businessinsider.com/news/stocks/A-26-year-old-Bitcoin-entrepreneur-was-handed-prison-time-and-the-experience-only-confirmed-his-belief-in-the-cryptocurrency-1001572250
the idea of bitcoin is that it is virtual but exists as all the bean counters = book keepers keep a record of the transaction. So Charlie whilst he did time - the established a bitcoin suystem in Prison
see article
The main thing being so long as all the book keepers in clink said a transaction had taken place - then it had.
weired - made sense to charlie but also made charlie do time !
and previously - the barter currency in prison was tins of mackerel with the change over fifteen years ago from the currency my father was using in POW camp fifty y previously - cigarettes
read all about it
charlie ( shrem) is out now a poorer but wiser man
a bit like Bailit I suppose