To be honest: I used to dismiss this whole category as a neat cryptography trick looking for a problem... The first time I saw the pitch, my reaction was basically: if something matters enough to verify on-chain, surely the data has to be visible too. Otherwise what are we even trusting?
What changed my mind was noticing how real systems actually break. Users do not want their finances, identity, health, or business terms exposed forever just to prove one fact. Builders do not want to choose between compliance and usability. Institutions cannot put sensitive records on a public rail and pretend policy will sort itself out later. Regulators, meanwhile, do not hate verification. They hate unverifiable claims and selective disclosure after the fact.
That is the real problem. Not transparency versus privacy in theory, but how to settle truth in public without turning every transaction into a public leak.
Most current solutions feel awkward. Either everything is hidden inside a trusted intermediary, which defeats the point, or everything is exposed, which makes normal commercial behavior impossible. Off-chain checks help, but they fragment trust and raise costs.
This is where infrastructure like @MidnightNetwork becomes interesting to me. Not because it sounds futuristic, but because it tries to make proof portable without making data public.
The real users are probably businesses, regulated apps, and AI agents acting on sensitive inputs. It works only if costs stay low, proofs stay practical, and law accepts the model. It fails if complexity overwhelms trust.
