Mechanism

The supply-chain provenance integrity monitoring mechanism attests device and firmware authenticity across a governed mesh deployment. Among its evaluators is a physical-unclonable-function challenge-response monitor that produces observations of PUF-response consistency. A PUF derives a unit-unique response from physical structure rather than from a stored value, so the response consistency observed over time serves as a hardware-rooted authenticity signal for the unit.

The PUF challenge-response monitor sits alongside the other supply-chain evaluators: a device authenticity attestation evaluator producing observations of continuously-valid, expired, revoked, or never-attested authenticity status; a firmware integrity chain monitor tracking firmware updates through the authorized-update-authority chain; a tamper-evident seal monitor producing observations of physical seal status; an authorized-service-provider history recorder producing observations of authorized maintenance, repair, and component-replacement events; a manufacturing-provenance chain evaluator verifying the device-to-manufacturer attestation chain; and a software bill of materials attestation verifier. Each evaluator's output is recorded by the supply-chain-health lineage recorder.

The PUF-response consistency observation is a governance-credentialed observation. It is recorded in the device's supply-chain-health lineage rather than treated as a one-time provisioning check, so the consistency signal is available to downstream health composition and to authorized consumers through the governance-credentialed health reporting mechanism.

Composition with Other Properties

PUF-response consistency observations join the other supply-chain provenance observations to enable downstream applications. These include zero-trust infrastructure deployment, in which every device continuously attests authenticity rather than relying on network-perimeter security; tamper-evident custody for high-security deployments through continuously-monitored tamper-evident seals; firmware-integrity-gated operation, in which devices refuse operation upon detected firmware tampering; and supply-chain verification enabling buyers to validate the authenticity of purchased devices through governance-credentialed attestations.

Supply-chain provenance health, including the PUF-response consistency observation, feeds fleet health aggregation. The fleet health computation engine and the cross-domain composite health assessor combine device, agent, mesh, governance, and supply-chain categories. In the device-plus-supply-chain composite, device operational health and authenticity attestation combine to indicate trustworthiness, so a unit whose PUF-response consistency degrades contributes a lower-trust signal to that composite assessment.

Because the PUF-response consistency observation is recorded in lineage as a credentialed observation, it participates in the same governance machinery as other health observations, including authority-filtered emission to authorized consumers, forecasting integration for failure prediction, and cascade-projection integration. The tamper-evident seal monitor and the PUF challenge-response monitor address distinct attack surfaces within the same supply-chain mechanism: the seal monitor reports physical seal status, while the PUF monitor reports response consistency of the unit's physical structure.

Disclosure Scope

The disclosure encompasses a supply-chain provenance integrity monitoring mechanism that attests device and firmware authenticity, including a physical-unclonable-function challenge-response monitor producing observations of PUF-response consistency, a device authenticity attestation evaluator, a firmware integrity chain monitor, a tamper-evident seal monitor, an authorized-service-provider history recorder, a manufacturing-provenance chain evaluator, a software bill of materials attestation verifier, and a supply-chain-health lineage recorder. The disclosure further encompasses the downstream applications enabled by supply-chain provenance health observations, including zero-trust infrastructure deployment, tamper-evident custody, firmware-integrity-gated operation, and supply-chain verification, and the composition of supply-chain provenance health with fleet health aggregation and cross-domain composite health assessment.

The supply-chain provenance health monitor is one evaluator within the broader health monitoring primitive of the governed spatial mesh, which observes and reports the internal operational health of physical devices, infrastructure agents, the mesh communication substrate, governance-chain integrity, and supply-chain provenance. The disclosure expressly contemplates equivalents and variations within its scope.

This article describes subject matter disclosed in U.S. Provisional Application No. 64/049,409.