InferTrust™ uses device-bound cryptographic keys, append-only log structures with sequence IDs, and pre-transmission signing to make decision records tamper-evi
InferTrust™'s security architecture is built around three interlocking guarantees: records cannot be fabricated after the fact, records cannot be altered without detection, and records cannot be deleted without leaving visible evidence. These guarantees are enforced mathematically through cryptographic primitives, not through access controls or organizational policies.
Each InferTrust™ deployment generates cryptographic key pairs that are bound to the specific hardware where inference occurs. The private key used for signing never leaves the device. This means a decision record signed by a specific device can only have been created on that device. No other system, no central server, no administrator can produce a record that appears to have been signed by that device. If an attacker compromises a central server, they cannot forge decision records that appear to originate from edge devices.
Decision records are constructed and signed inside the inference event, at the point where the model produces its output, before the result is transmitted to any other system. This eliminates the attack surface that exists in conventional logging architectures, where there is a gap between the inference and the log entry. In that gap, the result could be modified by application logic, network middleware, or database triggers before being recorded. InferTrust™ eliminates this gap entirely. The signed record is the first artifact that exists after inference.
Decision records are stored in an append-only log. New records can be added, but existing records cannot be modified or deleted. Each record includes a strictly incrementing Sequence ID (SEQ). If anyone attempts to delete a record, the gap in the sequence is immediately visible to any auditor. If anyone attempts to reorder records, the sequence numbers expose the manipulation. The append-only structure means the log is a complete, ordered history of every inference that occurred.
Each decision record includes a reference to the previous record's signature, creating a cryptographic chain similar in concept to a blockchain but optimized for single-device, high-throughput inference workloads. If any record in the chain is altered, every subsequent record's chain reference becomes invalid, making tampering immediately detectable regardless of where in the history the modification occurred.
The security architecture is designed so that verification does not require trust in the organization that created the records. Any party with access to the public verification key and the decision record log can independently confirm: that each record was signed by the claimed device, that no records have been altered since signing, that the sequence is complete with no gaps, and that the cryptographic chain is intact. This is critical for regulatory enforcement, legal discovery, and third-party audits where the verifier has no reason to trust the record-keeper.
InferTrust™ is designed to defend against: insider threats (employees modifying logs to cover mistakes or malfeasance), software bugs (application errors that corrupt or overwrite audit data), legal pressure (attempts to alter records after litigation begins), regulatory evasion (retroactively modifying AI behavior records before an audit), and supply chain attacks (compromised systems attempting to inject false records). The cryptographic architecture makes all of these attack vectors detectable after the fact, which is the core value proposition for regulated and high-liability environments.