Coins under those rules go to zero for sure, don't see how that had any effect on bitcoin though...

Oh I thought you had a format string where you just wanted a literal. Null termination should still be handled by types (string vs span perhaps) rather than format spec, though i guess that's straying further from C.

tinyformat does compile time checks that catch that, for C++ anyway. At least if I'm not misunderstanding the bug.

Feel like I've had a similar experience on some throwaway sqlite db, but didn't commit the result to my long term memory...

Did you try batching the additions (begin..commit)? O(0) algorithms ftw. There has to be a tshirt idea there. Maybe a -420+0 diff on the back?

It's also a floor on what it would take to buy all existing supply.