Thank you for your explanation, but am I correct in assuming that the first part of this quote implies there's going to be an indirect connection with someone else's coins? If I'm correct, then I don't think the latter part ^{[no max limit]} is feasible if you're going to partially rely on other exchanges in your platform...

e.g.
Your reserve + funds from other mixed operations = 1BTC
Someone needs to mix 10BTC
Result = ?

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Btw, it appears to be down at the moment:

• Quote
  Details: 0xF2 — Introduction failed, which means that the descriptor was found but the service is no longer connected to the introduction point. It is likely that the service has changed its descriptor or that it is not running.