Why the .onion service? What's wrong in using the .com itself from a Tor browser?
My guess would be that he's probably still advertising bitblender and is trying to advertise that here again...
As I think of it, just as a point it is helpful to cross reference any web address as the clearnet site of bitblender got hacked and the address was changed.
Check ann threads and anywhere else you can find to validate you have the right key.
.onion should be used instead of .com just because it can increase your privacy.
If the first and last hops are done by the same host then they can work out who you are and where you're trying to access. But with six hops you'd need 4 nodes from the same host.
In theory:
1st node knows your IP and the IP of the next node.
2nd node knows the IP of the first and third node.
3rd node knows the 2nd IP and the IP of the final server.
If you own 1 and 3 you therefore know who has requested what (the governments run a lot more exit nodes than you think and I can imagine they probably share resources).
