Evidence Graph, Transparency, and Marketplace Schemas

This appendix provides starter schemas for the v22 operating layer: assurance graphs, transparency logs, certified component marketplaces, and advisory records.

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Evidence Graph, Transparency, and Marketplace Schemas · Figure 1

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flowchart LR
    EvidenceGraph[Evidence graph] --> Transparency[Transparency log]
    Transparency --> Marketplace[Marketplace]
    Marketplace --> Advisory[Advisory]
    Advisory --> Revalidation[Revalidation queue]

Assurance graph node

Illustrative listing · yaml

node_id: evg_node_2026_0001
node_type: execution
created_at: 2026-04-20T00:00:00Z
owner: quantum-platform
labels:
  workload_id: wl_123
  provider: example-provider
  backend: qpu_a
properties:
  risk_tier: production_candidate
  retention_class: evidence_long
  classification: internal
relations:
  - predicate: generated_by
    object: workload:wl_123
  - predicate: used_calibration
    object: calibration:cal_456
  - predicate: produced
    object: artifact:result_789

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Assurance graph node · Figure 2

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classDiagram
    class EvidenceNode {
      node_id
      node_type
      owner
      labels
      properties
    }
    class Relation {
      predicate
      subject
      object
    }
    EvidenceNode --> Relation

Transparency-log entry

Illustrative listing · yaml

log_entry_id: qtl_2026_000001
log_index: 49152
submitted_at: 2026-04-20T00:00:00Z
entry_type: evidence_digest
subject:
  artifact_id: result_789
  digest_algorithm: sha256
  digest: 9f2c...
signer:
  key_id: sig_platform_release_01
  identity: quantum-evidence-service
proof:
  tree_size: 49153
  root_hash: a82b...
  inclusion_path:
    - 11ab...
    - 93fc...
confidentiality:
  content_logged: false
  metadata_redaction: standard

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Transparency-log entry · Figure 3

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sequenceDiagram
    participant Producer
    participant Log
    participant Verifier
    Producer->>Log: submit digest and signed envelope
    Log-->>Producer: inclusion proof
    Verifier->>Log: verify inclusion and consistency

Certified component record

Illustrative listing · yaml

component_id: qcomp_mitigation_zne_001
name: zero_noise_extrapolation_pipeline
version: 2.3.1
component_type: mitigation_pipeline
owner: quantum-algorithms
artifact_digest: sha256:3bb2...
signature:
  scheme: notary-or-sigstore
  key_id: release_key_07
certification:
  level: certified
  reviewed_at: 2026-04-20
  reviewers:
    - scientific-reviewer
    - platform-reviewer
  caveats:
    - validated only for sampler workloads below declared depth threshold
supply_chain:
  sbom_uri: s3://evidence/sbom/qcomp_mitigation_zne_001.json
  scorecard_summary: passed

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Certified component record · Figure 4

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flowchart TB
    Component[Component] --> Signature[Signature]
    Component --> SBOM[SBOM]
    Component --> Certification[Certification]
    Component --> Caveats[Caveats]
    Certification --> Use[Allowed use]

Quantum advisory record

Illustrative listing · yaml

advisory_id: qadvisory_2026_0042
title: Mitigation pipeline bias under high readout asymmetry
severity: high
status: active
affected:
  - component_id: qcomp_mitigation_zne_001
    version_range: ">=2.1.0 <2.3.2"
quantum_impact:
  semantic_impact: possible_expectation_bias
  claim_impact: revalidation_required
  hardware_impact: none
remediation:
  fixed_version: 2.3.2
  workaround: disable pipeline for affected readout profiles
  revalidation_required: true

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Quantum advisory record · Figure 5

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flowchart LR
    Advisory[Advisory] --> Affected[Affected versions]
    Advisory --> Severity[Severity]
    Advisory --> Remediation[Remediation]
    Affected --> Graph[Evidence graph impact query]
    Graph --> Queue[Revalidation queue]