Bitcoins used to buy images of child sex abuse could soon be tracked and blocked as two companies share data on how the virtual currency is spent.
The Internet Watch Foundation (IWF), which tracks abuse sites, is passing data to start-up Elliptic, which helps Bitcoin exchanges monitor transactions.
The data comes from transactions carried out on sites the IWF monitors
The IWF said the "pseudo-anonymity" offered by bitcoins made them an increasingly popular form of payment.
http://www.bbc.com/news/technology-36734658
