QCOS is purpose-built for organisations that need to audit quantum computing deployments — whether as the audited party, a third-party audit firm, a regulator, or a standards body. The full audit trail flows automatically from job submission through certification, reliability scoring, evidence bundling, and signed PDF reporting.

Who This Guide Is For


The QCOS Audit Data Model

Every quantum job generates an immutable audit record with the following data:

Step-by-Step Audit Workflow

Step 1 — Register as Audit Principal

Returns an audit_token scoped to the specific organisation for the audit period.

Step 2 — List All Jobs in Scope

Returns paginated list of all jobs with evidence bundle hashes, credits used, and backend IDs.

Step 3 — Verify Evidence Bundles (No API Key Required)


Step 4 — Check Backend Certification (ACOS)

Returns current and historical ACOS certification levels for the backend, including test dates, gate fidelities, and ISA conformance.

Step 5 — Review Reliability History (DRI)

Returns time-series DRI scores — essential for detecting backend degradation that may have affected results.

Step 6 — Review GlassBox Compilation Traces

Returns the full transpilation log: logical circuit → physical circuit, gate decompositions, connectivity constraints, and all optimisation passes applied.

Step 7 — Export Billing and Usage Report

Includes per-job billing, project allocation, chargeback reports, and credit purchase history.

Step 8 — Generate Signed Audit PDF

The PDF is signed by QCOS audit engine and includes:
  • Executive summary
  • Job inventory with evidence verification results
  • Backend certification (ACOS) summary
  • Reliability trend (DRI time series)
  • Billing and cost allocation
  • Compliance posture per framework
  • ECDSA attestation + RFC 3161 timestamp

Python Example — Automated Audit Collection


Compliance Framework Mapping