Interesting things from the document about the owner's (DPR) arrest so far:
* Cryptography was really good, and the complaint states that the TOR network makes it "practically impossible" to trace users.
* The tumbler worked. It "frustrates attempts to track transactions back to the blockchain and makes it practically impossible to trace users."
* There were 9 MILLION bitcoins worth of transactions that passed through the system over time.
* The server was in a foreign country. The report does not say where.
* There were 957k registered silkroad accounts.
* 146k unique buyer accounts.
* Silkroad maintained a small staff of admins, it wasn't just DPR.
* It is not certain that PGP worked for DPR, they have messages between the staff and DPR from "forensic analysis of the server." Unless he was not using PGP.
* DPR solicited murder for hire. Someone was able to obtain thousands of usernames, passwords, and personal info of silkroad users. It is assumed the feds have this, because they speak about the sample messages of names that the hacker sent. As a result, DPR attempted to have him killed. It is not known if the guy ever was indeed killed.
* The silk road was basically made from the shroomery.com, it was the first place he visited. They traced him by finding his old posts on various forums where he advertised it, not as the owner, just saying "I found this site, what do you think about it?"
* They caught Ross Ulbricht through simple web sleuthing and a few subpoenas.
* He did his web administrating from an internet cafe on Laguna Street in San Fransisco.
* Canada intercepted fake ID's going to his home. This was used to match with fake ID requests.
* For all the money he made, he lived in a small apartment with room mates for under 1000 a month.
* Here is the blockchain transaction for the "hit": http://blockchain.info/en/tx/4a0a5b6...d2fa2a145b5601