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I am imagining that the type of people designing such a technology would do better than generate a masterkey on Windows et al. I'm actually imagining purpose-built, auditable software and maybe even hardware.
Auditable by whom?
It comes down to Free Software vs Proprietary software. The same is true for the hardware. There is a reason why my question is being avoided here.
By the attendees of said masterkey-generation ceremony.
Actually by anyone who uses the currency. The role of the attendees is to verify that
all the software has not changed between what was used and what is released to the public.
Edit: The minute one tries to protect "intellectual property" at any level the trust is gone.