I believe it was mentioned through Canpire that they downloaded a bit from all IP's and then they go one complete file from all IP not a complete file from each IP.
Also don't know how much if matters but Canpire in not an impartial third party but part of the copyright troll circle. Seems they would gain financially to make sure someone got tracked and busted. Seems like a phishing expedition for monetary value. How do we know they didn't seed the original torrent.
@ Analog Andy - I hope that is not the case... so if some guy's IP is flagged, and he uploads a 1 and a 0 (2 bits, or 1/4 a byte) then he's screwed. Wow, that's a REALLY loose standard of evidence.
You make a good point about Canipre. It's owner might have been and may be a private investigator, but Canipre itself is not, and Logan is not an IT or programming professional, nor a developer of the Guardaley software he relies upon. He might have been a private investigator in the past, and might currently be, but he is also a musician. Nowhere can I located an education or profession in software or computing. The German program Guardaley is under massive scrutiny in the USA as well, as previously noted.
This Voltage case is a pile of dung, piled on different kinds of dung. Then thrown at a wall. Hoping one of all the types of dung sticks.