Trust Receipt TR2-2026-0912-0011 — BLOCK | Nexus by CyberChain Technologies

Unregistered agent attempts a chart summary

The artifact an auditor accepts: who asked, which agent under what authority, on what data, with which model and tools, what Alice decided and why, who approved, what evidence supports it, what happened next — sealed in a tamper-evident chain. No patient content, prompts, or outputs are on a receipt.

TRUST RECEIPT 2.0 · TR2-2026-0912-0011Decision ALC-2026-0912-0011 · issued Sep 12, 2026, 4:20:00 p.m. UTC · synthetic demonstration record

BLOCK

The requesting human could not be authenticated. Default deny.

IDENTITY_UNVERIFIED

Request & decision

Purpose · workflow: discharge-summary · inpatient-discharge
Human: Unknown caller · unverified (role only; no individual is named)
Agent: Unregistered caller
Data classification: PHI
Residency: No model executed
Model requested → selected: Sovereign clinical model → none
Tools: chart-read
Action: Unregistered agent attempts a chart summary
Policies: None beyond the envelope

Human review & outcome

Human review: Not required
Outcome: Refused. Unregistered caller logged; security notified.

Evidence

Evidence

Policy decision record · PHI request blocked from external model sha256:cb584987561c…

Decision evidence (4 checks)

Identity verified FAILIDENTITY_UNVERIFIED
Agent registered FAILAGENT_NOT_REGISTERED
Model eligible FAILMODEL_OUTSIDE_ENVELOPE
Runtime context FAILSESSION_UNVERIFIED

Integrity & identifiers

Audit integrity: ✓ Integrity verified recomputed from the hash chain on load
Chain event: #14 · self 2ef3de316fb5b6f8… · prev 9a61da861ffe…
Re-verify: Open the audit chain and re-verify →

DEMONSTRATION · SYNTHETICNO PHI · NO PROMPTS · NO OUTPUTSVERDICT BY THE NEXUS DECISION ENGINESEALED BY THE NEXUS AUDIT HASH CHAIN

Alice on this site runs over the synthetic Lakeview General Hospital environment. Verdicts, checks, and receipts are computed by the Nexus decision engine on synthetic requests; nothing here is a customer, a patient, or a production deployment. Signed-in organizations see their own agents, decisions, and receipts.