Proof test

Does this number need a VCC?

Not every calculation is worth a receipt. Answer six questions about one number you produce, and this page shows whether keeping it verifiable would pay off — and, just as honestly, when it would be effort for little return.

The result is explained factor by factor, never as a single opaque score. Everything runs in your browser: your answers are not sent anywhere and nothing is saved.

1Can the number be disputed?
A customer, auditor or counterparty could push back on it.
2Is it produced by several systems or people?
More hands and hops make a result harder to trace back.
3Can the formula change over time?
Rates, tiers or logic that get revised between calculations.
4Does it use datasets, rates or price lists that get updated?
Risk tables, fee schedules, FX rates, catalogues.
5Do you have to explain the result to a client, reviewer or partner?
How often the number leaves your own walls.
6How do you prove the calculation today?
The trail you can produce if someone asks months later.

0/6 answered

Everything on this page is worked out in your browser. Your answers are not sent anywhere and nothing is saved automatically. This guidance is not legal, financial or compliance advice.