A regulator asks you to prove what your AI did — long after it did it. Press play: each step of a real decision is pulled from a public ledger, its original timestamp intact, its signature still valid, anchored before any dispute existed. You’re not watching it happen. You’re watching an old record answer the challenge.
Act II · The proof assembles against the demand
DecisionFairness checkHuman override
☛ Each step is tappable — touch any node to inspect its anchored record.
The demand — 18 months later
Press “Produce the evidence.” Each step is pulled from the public ledger — its original timestamp intact, its signature still valid.
✓ The demand, answered
Act III · The adversary
But how does the regulator know you didn’t just write a convenient record?
The deepest version of the question. The answer is three things at once: the record was timestamped on a public ledger when it happened — so it can’t be backdated. Anyone can verify it against Hedera, not against you. And if anyone alters it now — here, DECLINE → APPROVE — the math breaks. Run the check.
The record — as signed & anchored
✓ verifies — signature and payload hash intact
The same record — altered afterward
— run the check —
Anchored when it happened, on a ledger you don’t control, and tamper-evident ever since. That is what it means to prove — months or years later — that a decision happened the way you said it did. Not your word. Math anyone can check.