SentinelVoice: Autonomous Voice Treasury Guardian

In 2024, multinational engineering firm Arup lost $25.6 Million after a finance employee was deceived by a deepfake CFO during an emergency video call. While the Voice AI industry has rapidly engineered compliant, polite assistants, this very design makes conventional voice bots the ultimate Trojan Horse for executive impersonation and Business Email Compromise wire fraud. When pressured by an urgent executive tone, traditional voice agents blindly obey. SentinelVoice inverts this paradigm, transforming conversational AI from an obedient clerk into an unyielding, Zero-Trust Treasury Interrogator specifically engineered to safeguard corporate liquidity. Operating over high-performance full-duplex WebSockets, SentinelVoice leverages the AssemblyAI Voice Agent API to stream 16kHz audio with sub-800ms turn-taking, actively interrogating callers while remaining completely immune to executive intimidation or false urgency. Underneath speech recognition, SentinelVoice extracts physical vocal-cord biometrics directly from raw audio buffers using the YIN pitch algorithm and Levinson-Durbin linear predictive coding formants. By cross-referencing caller acoustics against enrolled executive baselines, it immediately flags neural vocoders exhibiting unnaturally rigid glottal micro-jitter. To eliminate vulnerabilities associated with stolen credentials, SentinelVoice replaces static PINs with dynamic RFC 6238 TOTP rolling hardware tokens. High-value wire transfers exceeding corporate thresholds are automatically locked inside a SOX 404 Escrow State Machine. Capital is only released once vocal acoustics, ERP beneficiary ledgers, and out-of-band cryptographic tokens reach consensus. Deployed live on Railway Cloud, SentinelVoice bridges generative voice intelligence with deterministic enterprise risk management to stop deepfake fraud in its tracks.