{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2020:CMIBJTI4QO42LPA465GUO7IAAT","short_pith_number":"pith:CMIBJTI4","canonical_record":{"source":{"id":"2003.05984","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2020-03-12T19:23:14Z","cross_cats_sorted":["math-ph","math.MP","physics.data-an"],"title_canon_sha256":"82be8cec05c9045c18e19efeea09c358dab2ed483822030b4dfda9658b81bb34","abstract_canon_sha256":"1595157e6ed753cf3d2d8b99235b91fe585a18e1ae4cbfa33b590dc611a0547d"},"schema_version":"1.0"},"canonical_sha256":"131014cd1c83b9a5bc1cf74d477d0004ff591d9cbc5f47ee44a23204eab78229","source":{"kind":"arxiv","id":"2003.05984","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2003.05984","created_at":"2026-07-05T00:47:42Z"},{"alias_kind":"arxiv_version","alias_value":"2003.05984v1","created_at":"2026-07-05T00:47:42Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2003.05984","created_at":"2026-07-05T00:47:42Z"},{"alias_kind":"pith_short_12","alias_value":"CMIBJTI4QO42","created_at":"2026-07-05T00:47:42Z"},{"alias_kind":"pith_short_16","alias_value":"CMIBJTI4QO42LPA4","created_at":"2026-07-05T00:47:42Z"},{"alias_kind":"pith_short_8","alias_value":"CMIBJTI4","created_at":"2026-07-05T00:47:42Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2020:CMIBJTI4QO42LPA465GUO7IAAT","target":"record","payload":{"canonical_record":{"source":{"id":"2003.05984","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2020-03-12T19:23:14Z","cross_cats_sorted":["math-ph","math.MP","physics.data-an"],"title_canon_sha256":"82be8cec05c9045c18e19efeea09c358dab2ed483822030b4dfda9658b81bb34","abstract_canon_sha256":"1595157e6ed753cf3d2d8b99235b91fe585a18e1ae4cbfa33b590dc611a0547d"},"schema_version":"1.0"},"canonical_sha256":"131014cd1c83b9a5bc1cf74d477d0004ff591d9cbc5f47ee44a23204eab78229","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T00:47:42.426024Z","signature_b64":"8J6nlJHQt0ulDXv+YJXvKo0LK8uKgkF2QkVE38TtG3O5DdNW0Q/EL2aJUa9JksbqXcaoCh7qNvs+ydG8kHBTDg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"131014cd1c83b9a5bc1cf74d477d0004ff591d9cbc5f47ee44a23204eab78229","last_reissued_at":"2026-07-05T00:47:42.425647Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T00:47:42.425647Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2003.05984","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T00:47:42Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"IbOzg/Z3MFTqjNquXEY3HpwY/wTw6SYLjyAr8sY+nSqY6xdvflHEI9uDI2OR+G65qtufXtFmvZBbPTbG84BiAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-05T13:28:01.983002Z"},"content_sha256":"f4ae13cb28ab3a92eb4a811b3f3739650264a3b3965c75949a043f0a8afef709","schema_version":"1.0","event_id":"sha256:f4ae13cb28ab3a92eb4a811b3f3739650264a3b3965c75949a043f0a8afef709"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2020:CMIBJTI4QO42LPA465GUO7IAAT","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Inaccessible information in probabilistic models of quantum systems, non-contextuality inequalities and noise thresholds for contextuality","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["math-ph","math.MP","physics.data-an"],"primary_cat":"quant-ph","authors_text":"Iman Marvian","submitted_at":"2020-03-12T19:23:14Z","abstract_excerpt":"Classical probabilistic models of (noisy) quantum systems are not only relevant for understanding the non-classical features of quantum mechanics, but they are also useful for determining the possible advantage of using quantum resources for information processing tasks. A common feature of these models is the presence of inaccessible information, as captured by the concept of preparation contextuality: There are ensembles of quantum states described by the same density operator, and hence operationally indistinguishable, and yet in any probabilistic (ontological) model, they should be describ"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2003.05984","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2003.05984/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T00:47:42Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"HMqagw6ZvF+3T2+kf0UvJS0GwUdyO7mTxZXPx8SdyHW2JUpEy6KG/Z03H2wuhu1fIY2BQ4TDALkhWONOdT8sCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-05T13:28:01.983637Z"},"content_sha256":"827eea22c1757e4b1164d20bb942920ccd298631e1f4ddd436a6d45ae40626f4","schema_version":"1.0","event_id":"sha256:827eea22c1757e4b1164d20bb942920ccd298631e1f4ddd436a6d45ae40626f4"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/CMIBJTI4QO42LPA465GUO7IAAT/bundle.json","state_url":"https://pith.science/pith/CMIBJTI4QO42LPA465GUO7IAAT/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/CMIBJTI4QO42LPA465GUO7IAAT/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-08-05T13:28:01Z","links":{"resolver":"https://pith.science/pith/CMIBJTI4QO42LPA465GUO7IAAT","bundle":"https://pith.science/pith/CMIBJTI4QO42LPA465GUO7IAAT/bundle.json","state":"https://pith.science/pith/CMIBJTI4QO42LPA465GUO7IAAT/state.json","well_known_bundle":"https://pith.science/.well-known/pith/CMIBJTI4QO42LPA465GUO7IAAT/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:CMIBJTI4QO42LPA465GUO7IAAT","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"1595157e6ed753cf3d2d8b99235b91fe585a18e1ae4cbfa33b590dc611a0547d","cross_cats_sorted":["math-ph","math.MP","physics.data-an"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2020-03-12T19:23:14Z","title_canon_sha256":"82be8cec05c9045c18e19efeea09c358dab2ed483822030b4dfda9658b81bb34"},"schema_version":"1.0","source":{"id":"2003.05984","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2003.05984","created_at":"2026-07-05T00:47:42Z"},{"alias_kind":"arxiv_version","alias_value":"2003.05984v1","created_at":"2026-07-05T00:47:42Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2003.05984","created_at":"2026-07-05T00:47:42Z"},{"alias_kind":"pith_short_12","alias_value":"CMIBJTI4QO42","created_at":"2026-07-05T00:47:42Z"},{"alias_kind":"pith_short_16","alias_value":"CMIBJTI4QO42LPA4","created_at":"2026-07-05T00:47:42Z"},{"alias_kind":"pith_short_8","alias_value":"CMIBJTI4","created_at":"2026-07-05T00:47:42Z"}],"graph_snapshots":[{"event_id":"sha256:827eea22c1757e4b1164d20bb942920ccd298631e1f4ddd436a6d45ae40626f4","target":"graph","created_at":"2026-07-05T00:47:42Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2003.05984/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Classical probabilistic models of (noisy) quantum systems are not only relevant for understanding the non-classical features of quantum mechanics, but they are also useful for determining the possible advantage of using quantum resources for information processing tasks. A common feature of these models is the presence of inaccessible information, as captured by the concept of preparation contextuality: There are ensembles of quantum states described by the same density operator, and hence operationally indistinguishable, and yet in any probabilistic (ontological) model, they should be describ","authors_text":"Iman Marvian","cross_cats":["math-ph","math.MP","physics.data-an"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2020-03-12T19:23:14Z","title":"Inaccessible information in probabilistic models of quantum systems, non-contextuality inequalities and noise thresholds for contextuality"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2003.05984","kind":"arxiv","version":1},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:f4ae13cb28ab3a92eb4a811b3f3739650264a3b3965c75949a043f0a8afef709","target":"record","created_at":"2026-07-05T00:47:42Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"1595157e6ed753cf3d2d8b99235b91fe585a18e1ae4cbfa33b590dc611a0547d","cross_cats_sorted":["math-ph","math.MP","physics.data-an"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2020-03-12T19:23:14Z","title_canon_sha256":"82be8cec05c9045c18e19efeea09c358dab2ed483822030b4dfda9658b81bb34"},"schema_version":"1.0","source":{"id":"2003.05984","kind":"arxiv","version":1}},"canonical_sha256":"131014cd1c83b9a5bc1cf74d477d0004ff591d9cbc5f47ee44a23204eab78229","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"131014cd1c83b9a5bc1cf74d477d0004ff591d9cbc5f47ee44a23204eab78229","first_computed_at":"2026-07-05T00:47:42.425647Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T00:47:42.425647Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"8J6nlJHQt0ulDXv+YJXvKo0LK8uKgkF2QkVE38TtG3O5DdNW0Q/EL2aJUa9JksbqXcaoCh7qNvs+ydG8kHBTDg==","signature_status":"signed_v1","signed_at":"2026-07-05T00:47:42.426024Z","signed_message":"canonical_sha256_bytes"},"source_id":"2003.05984","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:f4ae13cb28ab3a92eb4a811b3f3739650264a3b3965c75949a043f0a8afef709","sha256:827eea22c1757e4b1164d20bb942920ccd298631e1f4ddd436a6d45ae40626f4"],"state_sha256":"aec2bd28cecc58dc724d31cc5f098f90e7326716489df64a9010c98eb6cce6d3"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"nmZJ/AqjQLMlGHvfqByGe2N6l5clGlb7bx1NIUjciuTRAJeZ14CK5y4W4O4y36NMaihcICdBU198xhrXdHDjAw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-05T13:28:01.988090Z","bundle_sha256":"1ee7f1c69e01576e9b09d3f3e10c7cd458fab2bb377297fa0a3fd8f8899cf6ab"}}