Any actor. Any system.
Any regulated environment.

Problem

Every LIMS write, batch record update, and deviation log is a regulated electronic record. Current systems log who made the change. They cannot prove that the change was authorized before it happened.

STS-001

Every write to a LIMS, eDMS, or batch record system requires a TAO. Electronic signatures become pre-execution authorization artifacts. Reviewer independence is structural: the approving plane is architecturally separated from the actor that requested the change. Validation evidence is a native output, not a retrofit.

• ›21 CFR Part 11 electronic signatures by construction
• ›ALCOA+ — Attributable, Legible, Contemporaneous, Original, Accurate, Complete
• ›Batch record integrity: TAO-gated before durable write
• ›Deviation and CAPA workflows: pre-execution authorization for every state transition

Problem

Process parameter changes, recipe updates, and batch release decisions affect product quality and safety. Policy-based controls are bypassed by misconfiguration or privilege escalation.

STS-001

TAO-gated writes for MES and historian changes. Process engineers, automated pipelines, and AI optimizers all pass through the same authorization gate. No TAO, no setpoint change. The authorization receipt is produced before the action proceeds.

• ›Recipe and batch parameter changes: TAO-gated pre-execution
• ›Automated process optimization: AI agent writes subject to same gate as human operators
• ›Historian and audit trail: cryptographic receipts, not editable log entries
• ›Separation of duties: production authorization ≠ production execution

Problem

Trade execution, ledger entries, and position changes require pre-trade authorization and post-trade auditability. Existing systems provide audit logs — records of what happened. They do not provide pre-execution certificates — proof that authorization preceded the action.

STS-001

Every ledger write carries a TAO issued before execution and recorded with the audit trail. The result is not just a log of what happened. It is proof that authorization preceded the action — the distinction regulators increasingly require.

• ›Pre-trade authorization certificates: TAO is the proof, not the log entry
• ›Write and receipt bound together: no replay path
• ›Model risk governance (SR 11-7): AI model outputs are TAO-gated before altering positions
• ›DORA operational resilience: tamper-evident ledger by construction

Problem

SCADA/ICS configuration changes, setpoint writes, and firmware pushes can cause physical harm. Existing access controls are application-layer — bypassable by compromised credentials or privilege escalation.

STS-001

The TAO gate sits below ordinary application policy. A compromised operator account with valid credentials still cannot write to a controller without a TAO issued by a separated governance plane.

• ›Setpoint and configuration writes: TAO-gated before reaching the controller
• ›Firmware and software updates: pre-execution certificate required
• ›Compromised credentials: cannot issue TAOs from the execution side
• ›Supply chain: every upstream write to configuration stores is ledger-anchored

Problem

EHR writes, order entry, and diagnostic record updates are high-stakes actions. AI-assisted clinical workflows introduce new actors — models, agents, decision-support tools — with no consistent pre-execution authorization framework.

STS-001

Every EHR write — from any actor, human or AI — requires a TAO. Physician orders, AI-suggested diagnoses, and automated protocol triggers pass through the same gate. Authorization is a receipt, not an access log. Audit is a proof, not a reconstruction.

• ›EHR writes: pre-execution authorization for human and AI actors alike
• ›AI clinical decision support: model outputs are TAO-gated before entering the record
• ›HIPAA access audit: cryptographic receipts, not reconstructed logs
• ›Order entry: authorization context is bound before the order is created

Problem

Privileged actions on classified or sensitive systems require tamper-evident proof of authorization. Existing audit systems record what happened. They do not prove that authorization preceded the action — and they are frequently retrofitted rather than architecturally enforced.

STS-001

TAOs are issued before execution and recorded in a tamper-evident ledger. The audit artifact is produced before the action executes — it is not a reconstruction. The governance plane is architecturally isolated from the systems it governs.

• ›Privileged actions: TAO required before any write to sensitive systems
• ›Tamper-evident receipts by construction, not by policy
• ›Autonomous agent pipelines: AI actions subject to same gate as human operators
• ›Zero-trust alignment: continuous pre-execution verification, not perimeter trust

Problem

Deployments, configuration changes, secrets rotation, and infrastructure mutations affect production systems. CI/CD pipelines run as privileged actors with broad access. Audit logs record what pipelines did — not whether each action was individually authorized before it happened.

STS-001

Every production write — deployment, config change, secrets rotation — requires a TAO. Pipeline steps are actors subject to the same governance gate as human engineers. The TAO is the deployment authorization receipt, produced before the write.

• ›Deployments: TAO required before any production mutation
• ›Secrets rotation: pre-execution authorization, cryptographic receipt
• ›Infrastructure-as-code: every applied change TAO-gated
• ›SLSA provenance: TAO chain provides build-to-deploy authorization trail