Mark Karpeles, CEO of the now defunct Mt Gox bitcoin exchange, has made public an email exchange between former DEA officer Carl Mark Force IV and himself. Screenshots of the emails can be found below.
In one email, Force says, “I wanted to ask you if you could back me on a deal for 250 bitcoin.”
He also sent Karpeles an email where he said he was looking for other work opportunities. He predicted:
The American government and economy will crash in the next five years. I see Bitcoin as the currency of the future.
In the final email, dated 5/15/13, Force says, “Told you [sic] should have partnered with me!”