{"paper":{"title":"QCIVET: A Quantum--Classical Pipeline Integrity Framework with Contract-Based Subtype Verification and Hash-Chained Audit Traces","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"QCIVET verifies integrity of hybrid quantum-classical pipelines through contract-based subtype checks on quantum observables and hash-chained audit traces.","cross_cats":["cs.CR"],"primary_cat":"quant-ph","authors_text":"Esra Yeniaras, Muhammad Amin Karimov","submitted_at":"2026-05-13T07:19:44Z","abstract_excerpt":"Hybrid quantum--classical pipelines increasingly support applications such as drug discovery, fraud detection, and cloud quantum processing unit (QPU) auditing, yet existing integrity-verification methods remain largely classical and fail to capture quantum-stage behaviour. We propose QCIVET, a contract-based integrity-verification framework that models a hybrid pipeline as a sequence of stages with explicit specifications and audits it at both syntactic and semantic levels. Syntactic integrity is enforced through a hash-chained audit trail with optional external anchoring, while semantic inte"},"claims":{"count":4,"items":[{"kind":"strongest_claim","text":"We prove soundness under the diamond-norm distance between quantum channels, conditional completeness for informationally complete observable families, and compositionality under inheritance chains. We further identify a class of Z-only-sneaky overrides that evade weak single-Pauli contracts but are exposed by multi-Pauli contracts.","source":"verdict.strongest_claim","status":"machine_extracted","claim_id":"C1","attestation":"unclaimed"},{"kind":"weakest_assumption","text":"The calibrated observable-deviation test grounded in the behavioural-subtyping discipline of Liskov and Wing correctly captures semantic integrity violations at quantum stages under realistic noise.","source":"verdict.weakest_assumption","status":"machine_extracted","claim_id":"C2","attestation":"unclaimed"},{"kind":"one_line_summary","text":"QCIVET provides contract-based subtype verification and hash-chained audit traces to enforce syntactic and semantic integrity in hybrid quantum-classical pipelines.","source":"verdict.one_line_summary","status":"machine_extracted","claim_id":"C3","attestation":"unclaimed"},{"kind":"headline","text":"QCIVET verifies integrity of hybrid quantum-classical pipelines through contract-based subtype checks on quantum observables and hash-chained audit traces.","source":"verdict.pith_extraction.headline","status":"machine_extracted","claim_id":"C4","attestation":"unclaimed"}],"snapshot_sha256":"1c44bb955c834ab472d83504466ce791183afd8701463388cd276dbcbef05863"},"source":{"id":"2605.13109","kind":"arxiv","version":1},"verdict":{"id":"cdf1d4c4-6117-4664-afcb-e54c76b3f61e","model_set":{"reader":"grok-4.3"},"created_at":"2026-05-14T18:58:59.996468Z","strongest_claim":"We prove soundness under the diamond-norm distance between quantum channels, conditional completeness for informationally complete observable families, and compositionality under inheritance chains. We further identify a class of Z-only-sneaky overrides that evade weak single-Pauli contracts but are exposed by multi-Pauli contracts.","one_line_summary":"QCIVET provides contract-based subtype verification and hash-chained audit traces to enforce syntactic and semantic integrity in hybrid quantum-classical pipelines.","pipeline_version":"pith-pipeline@v0.9.0","weakest_assumption":"The calibrated observable-deviation test grounded in the behavioural-subtyping discipline of Liskov and Wing correctly captures semantic integrity violations at quantum stages under realistic noise.","pith_extraction_headline":"QCIVET verifies integrity of hybrid quantum-classical pipelines through contract-based subtype checks on quantum observables and hash-chained audit traces."},"references":{"count":60,"sample":[{"doi":"","year":2001,"title":"Internet X.509 public key infrastructure time-stamp protocol (tsp)","work_id":"3355591e-3f26-4e6e-b50c-fff9f7a37fbc","ref_index":1,"cited_arxiv_id":"","is_internal_anchor":false},{"doi":"","year":2023,"title":"Case study-based approach of quantum machine learning in cybersecurity: Quantum support vector machine for malware classification and protection","work_id":"5d62b606-7b7e-44bf-a962-e6945ee93ad8","ref_index":2,"cited_arxiv_id":"","is_internal_anchor":false},{"doi":"","year":2024,"title":"Hybrid quantum architecture for smart city security.Journal of Systems and Software, 217:112161, 2024","work_id":"29eaa222-59d0-4d83-a80d-f114bb01f0a5","ref_index":3,"cited_arxiv_id":"","is_internal_anchor":false},{"doi":"","year":2025,"title":"Deshmukh, and Nivedita Mishra","work_id":"e2dc1c0f-b4d6-427a-b7e3-5b12d4e373fd","ref_index":4,"cited_arxiv_id":"","is_internal_anchor":false},{"doi":"","year":2026,"title":"AI supply chain security: MBOM-PQC provenance, PQC attestation, and a maturity model for quantum-resistant assurance, 2026","work_id":"63aead47-d6da-4a7d-8637-c4323dab8a5f","ref_index":5,"cited_arxiv_id":"","is_internal_anchor":false}],"resolved_work":60,"snapshot_sha256":"7e0a7ecb8ee2585c5fac23e89459f685e43c8a78942b5c2d7873b86d1d922828","internal_anchors":0},"formal_canon":{"evidence_count":2,"snapshot_sha256":"1d2374e7025c04790da87beb57db19758d97e4661d2506a0f247534559b24e15"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"}