Three men in the United Kingdom have been sentenced to jail by selling drugs on the dark net using bitcoin as a means of payment.

According to TNW, three men in the UK were sentenced to jail for operating the “complex” drug trading business “project t4”. The Thames Valley police said the three men were Colin McCabe, Toby Woods and Robert Price, who sold A-class drugs on the dark and used Bitcoin as a means of payment, earning more than £1 million. According to the BBC, the US Federal Bureau of Investigation found the drug trading network and contacted the British police.