good luck with that

i'm pretty sure it's len sassaman, dude has been dead for some time now

more than likely if it's another person entirely, they have faked their death and manufactured a new identity, since after all, we only know about the bitcoins he mined until he disappeared, after, well, that could be anyone

and that would be how i would have played it, if i'd been granted such an epic vision

and probably would be sitting pretty in a cabin in alaska or tajikistan in the mountains or in the himalayas sipping goat yogurt, with no mobile phone and an old computer connected up to an ADSL connect at the edges of nowhere 

 What makes you think it's Len Sassaman? (I've never heard of him, but I'm relatively new to this topic)