RE: Japan

From: Ben Grodsky <>
Date: Mon, 11 Jun 2007 14:32:39 -0700

Based on Dylan's trackers and some sample data we collected months ago, Japanese IPs amount to about 5% of the BitTorrent network. Attached is a little Excel file I had put together a while ago showing geoIP break down for BT, gnutella, ares and eDonkey.

From: Randy Saaf
Sent: Mon 11-Jun-07 14:23
To: Ben Grodsky; Jay Mairs
Cc: Octavio Herrera
Subject: RE: Japan

What about bit torrent in Japan/asia?



From: Ben Grodsky
Sent: Monday, June 11, 2007 1:36 PM
To: Randy Saaf; Jay Mairs
Cc: Octavio Herrera
Subject: RE: Japan




Jay and I don't actually have anything else to say about this. The little bit that Jonathan said is copied and pasted from wikipedia. We probably need a Japanese translator to help us with this. The Korean questions we've previously had from people HAD to go to Danny from our development team for help.




From: Neil Saxby
Sent: Fri 08-Jun-07 05:50
To: Jonathan Lee; Randy Saaf; Ben Grodsky; Jay Mairs
Cc: Octavio Herrera
Subject: RE: Japan

You guys want me to fwd this to Paul now, or hold tight until we have a little more information/answers to his questions.





From: Jonathan Lee
Sent: Thursday, June 07, 2007 6:46 PM
To: Randy Saaf; Ben Grodsky; Jay Mairs; Neil Saxby
Cc: Octavio Herrera
Subject: RE: Japan


Three main p2p in Japan. Winny, Share, Perfect Dark.



Winny (also known as WinNY) is a Japanese peer-to-peer <> (P2P) file-sharing <> program that claims to be loosely inspired by the design principles behind the Freenet <> network and that also claimed to keep user identities untraceable. While Freenet was implemented in Java, Winny was implemented as a Windows C++ application. The software takes its name from WinMX <> , where the M and the X are raised one letter in the Latin alphabet, to N and Y. As of September 2003 <> , there were 250,000 users of the program according to the Tokyo-based Association of Copyright for Computer Software. According to P2Pnet, it was the most popular file-sharing program in Japan, with WinMX <> in second place.



Share is the name for a closed-source <> P2P <> application being developed in Japan by an anonymous author. Since the author of Winny <> was arrested, Share was developed as its successor, also focusing on higher security. Share functions in much the same manner as Winny, using encrypted caches, filenames and IP addresses, and is based on the same node organized architecture as Winny.



Perfect Dark is the file sharing software which <> operates with Windows <> . It is in the midst of developing the chairman with the anonymous writer whom you are identified, finally you have aimed toward those which can become the succession of Winny <> and Share <> . Presently, it is in the midst of the open test.,518.0.html





-----Original Message-----
From: Randy Saaf
Sent: Thursday, June 07, 2007 6:23 AM
To: Ben Grodsky; Jay Mairs; Jonathan Lee; Neil Saxby
Cc: Octavio Herrera
Subject: Fw: Japan




Can you and jay give a quick look at what people in japan are using for p2p.




----- Original Message -----

From: Gathercole, Paul <>

To: Octavio Herrera; Randy Saaf; Neil Saxby

Cc: Denby, Mark <>

Sent: Thu Jun 07 06:13:21 2007

Subject: Japan


Good to see you all last night.




Would you be able to take some time and give me a view of how you see the P2P landscape in Japan?


I am aware of at least three networks with particular popularity in Japan - Winny, WinMX and Share.


Do you know how big these networks are? Which do you cover? Do you have local connectivity there?


How do you perceive the threat of P2P in Japan?




Any thoughts/figures you can send over to help us start to understand would be great.










Paul Gathercole


Director Anti-Piracy




Universal Music Group International - Digital


1 Sussex Place


London W6 9EA


+44 (0)20 8910 5184


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Received on Fri Sep 14 2007 - 10:56:49 BST

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