[adrianmonk]

I don't see why it wouldn't be appropriate. Within the context of computing, there is no one set meaning of "quantum". In fact, there are at least three:

1. Quantum computing, as in quantum physics.

2. Time quantum, as in the time slices a multitasking scheduler gives to threads.

3. Quantum Corporation, the disk/tape storage company.

Seems like there is room for one more meaning. They probably mean "quantum" as in "quantum leap" since this is a different paradigm for ledgers. It makes sense to me.