Here's the relevant question: http://stackoverflow.com/questions/15445285/how-can-i-connect-to-a-tor-hidden-service-using-curl-in-php http://stackoverflow.com/q

Here's the relevant question: http://stackoverflow.com/questions/15445285/how-can-i-connect-to-a-tor-hidden-service-using-curl-in-php http://stackoverflow.com/questions/15445285/how-can-i-connec... It doesn't seem like it's how they caught him, but it's some circumstantial evidence towards his guilt. He changed his username from his real name to "frosty" at some point.