A caller who identified himself as a U.S. Marshal with Border Patrol in Texas informed the victim he would need to verify his identity, or else an arrest warrant would be issued and the victim's bank accounts would be frozen.
Dorian Prentice Satoshi Nakamoto said Thursday that he is not the creator of bitcoin, adding further mystery to the story of how the world's most popular digital currency came to be.
The Mt. Gox bitcoin exchange in Tokyo filed for bankruptcy protection, acknowledging that a significant amount of the virtual currency had gone missing.