Your AI provider promises non-retention. Can you prove it?

Today's AI providers promise they won't retain your data. Epheia lets you prove it. Current enterprise AI deployments rely on contractual non-retention commitments, policy promises that cannot be independently verified on a per-session basis. Epheia closes that gap with the Epheia Privacy Receipt (EPR): a cryptographic artifact that provides session-level, independently verifiable evidence that sensitive data was never written to persistent storage. The system confines inputs to a RAM-only execution environment with hardware-rooted attestation via trusted execution environments, enforces write-block and egress-gating policies, and, when learning is permitted, bounds model updates with differential privacy. The result: regulated AI compliance moves from "trust our policy" to proof you can verify.