Louise Cooper and guests look at the volatile world of investing in digital currencies. Call 03700 100 444 from 1pm to 3.30pm on Wednesday 26 June or e-mail moneybox@bbc.co.uk now with your experiences and questions.
Joining Louise are:
Marc Warne, Founder, Bittylicious
Jemima Kelly, reporter, FT Alphaville
Dave Jevans, CEO, CipherTrace
Producer: Diane Richardson
Editor: Emma Rippon
