The true identity of the inventor of the cryptocurrency bitcoin is one of the biggest mysteries of the digital age.
While rumours have spread for more than a decade, only one thing is certain: the shadowy creator (or creators) has gone by the name of Satoshi Nakamoto.
But the question is not just a matter of intrigue for the tech geeks, because the creator is also the rightful owner of a bitcoin treasure chest worth some £31.5 billion — potentially making the person behind the mask one of the richest people in the world.
Which may be one of the reasons Craig Wright, a 53-year-old Australian computer scientist who lives in Surrey, is going to huge lengths to prove he is Nakamoto.
However, there is