Every security product sells prevention. NoData sells proof. Not instead of prevention. In addition to it. It is what lets you say yes to AI: don't block it, prove its access.
They all store the record. You have to believe them.
And because the key for a denied field is never derived, NoData proves the one thing a log never can: what was never disclosed.
We can disappear tomorrow. Your evidence stays.
NoData does not hold your data, does not hold your keys, and does not ask you to trust its logs. Every release decision produces portable cryptographic evidence that remains verifiable even if NoData no longer exists.