Interactive simulation
WitnessOS in your browser
Fire governed actions, evaluate policy, and inspect signed receipts. The E4 evidence grade is real: this page demonstrates the same receipt structure the gateway produces, anchored with RFC 3161 external timestamps.
WitnessOS Simulation
Interactive Simulation
In-browser simulation: this page runs entirely in your browser with sample data. It illustrates the WitnessOS governed-action flow (policy evaluation, hash-chained events, signed receipts). No real action is executed here. The real proof, recorded 5 Sep 2026 with an externally anchored E4 receipt (RFC 3161 TSA, revocation-verified at issuance), independently re-verified offline from the export bundle: VERDICT PASS, grade E4 (Anchored).
No actions yet
Fire an email or refund action from the sidebar to see WitnessOS governance in action - policy evaluation, Merkle-chain evidence, and signed receipts.
After the simulation
Evaluate the real thing
The simulation mirrors the gateway receipt structure. For a live evaluation against your stack, request early access.