PrivateHD Source
 

Anybody know which source use?

https://privatehd.to/ and https://avistaz.to/

custom made

Its a custom, but i thing they make changes of some source, not to make it from zero.
I thinking they use http://bittytorrent.com/demo/

Anybody can give opinion?

I think its modified xbtit. Atleast one of their network tracker is using this source.

http://torrents.yourexotic.com/

i do not know what source that is, never seen it before but it looks good

I just searching and find one nice source. It is possible to be that? http://demo.bittytorrent.com/