Identity platforms prove who logged in. Nothing answers who authorized a specific down-stream action. HAV bridges the gap between silicon roots of trust and autonomous workflows, anchoring every execution directly to physical secure elements.
Recent wild exploits (Stanford, Harvard, MIT "Agents of Chaos" testing loops) prove that standard internet protocols built for humans cannot establish agent action validity. Attackers aren't breaking credentials; they are abusing valid live sessions down-stream of the login boundary.
The default way to grant an AI agent authority is to pass it a raw software API key. An API key acts as an absolute blank check saying: "You are me. Execute anything." It cannot bind, limit, or retroactively revoke authority mid-flight at the hardware gate.
Microsoft data shows a +111% YoY increase in token-replay exploits. Traditional identity vendors defend the perimeter boundary during initial authentication, leaving subsequent session state completely open to runtime hijacking.
HAV unifies three independent execution properties into a single, multi-witness immutable asset.
Each voucher binds an immutable, system-generated identity ID directly to secure silicon (TPM 2.0 / StrongBox / Secure Enclave). Raw readable fields are signed metadata attributes, never the structural security anchor.
Enforced by a strict server-authoritative continuity chain sequence Hₙ₊₁ = SHA256(Hₙ ∥ Payload). The client cannot forge, fork, advance, or pre-compute state progressions.
Active communication frames are tied explicitly to device-resident secure cryptographic keys. Stolen browser cookies or hijacked software access tokens lack the mandatory hardware-backed signature asset.
Humans complete a biometric hardware-attested ceremony defining an explicit envelope parameter (budget caps, time limits, permitted tool-scopes). AI agents execute autonomously inside it, completely powerless outside.
Platform-integrity failures or policy blocks force-generate a structured denial voucher. Failed probes and malicious lateral traversals remain permanently exposed to compliance auditors.
Vouchers encapsulate RFC 3161 qualified eIDAS timestamps. Relying parties (issuers, infrastructure nodes, merchants) verify full validity offline without trusting third-party server environments.
The same core mechanism applies across autonomous systems, enterprise IAM, card-not-present payments, healthcare workflows, government approvals, and other high-consequence actions. The domain-specific action is simply a normalized payload field within the voucher; the underlying cryptographic engine remains identical.
Anchoring card credentials directly to the physical secure element reduces friendly fraud liabilities in Card-Not-Present (CNP) transactions and mitigates credential-harvesting phishing attacks. The operational sequence relies entirely on the universal primitive engine.