user26877: Who controls the "Payment Hub" in tumblebit?
Is it another protocol or company or is there something else / someone else involved?

user442: The notion is that anyone with sufficient Bitcoins to act as collateral for the payment channels could setup a TumbleBit payment hub. This would likely be a company.
The more users a TumbleBit payment hub has the greater the privacy and utility offered so one would expect a small number of payment hubs with many users.

26877: <p>Who controls the "Payment Hub" in tumblebit?</p>

<p>Is it another protocol or company or is there something else / someone else involved?</p>
 442: <p>The notion is that anyone with sufficient Bitcoins to act as collateral for the payment channels could setup a TumbleBit payment hub. This would likely be a company.</p>

<p>The more users a TumbleBit payment hub has the greater the privacy and utility offered so one would expect a small number of payment hubs with many users.</p>
