Monero, and only Monero.
BlackOps settles in one coin, Monero.
Most markets take Bitcoin and Monero and let you choose. BlackOps drops Bitcoin on purpose. A public chain remembers every payment and hands that memory to anyone who reads it. Monero hides sender, receiver and amount at the protocol level, so there is no trail to follow.
For anything you want kept private, which is most of what brings people to Tor, Monero is the answer anyway. The missing Bitcoin door was never going to be used by a buyer who came here for privacy.
BlackOps Market