toxic_
Judicious use of DNSBLs, port scanning and latency measurements, three measures which shouldn't take a competent technician more than a few days to knock together, will outperform Stripe.
If you're not already on sodium oxybate (Xyrem), I can't recommend it enough; it's the only thing that puts me in a sound, restorative sleep for more than a few hours.
I'm in the UK where prescriptions for Xyrem are almost impossible to obtain. Fortunately, the precursors for its active ingredient, GHB, are inexpensive and easy to acquire, so I just synthesize it myself. Technically it's illegal, but it would take an especially brave magistrate to convict me for having to overcome deficiencies in the NHS.
This is the first I'm hearing of probabilistic payments. Are you aware of any other systems, proposed or operational, using this to pay for bandwidth? It seems like a natural fit.