{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2009:3SCLMNSVCKVMMQFE6LVBM4HPW6","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":"2602b4a3aa939be3f9c8a0f7938ef9b14b722b21bda1a5bd7598fab7c36625de","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2009-07-13T14:02:21Z","title_canon_sha256":"77c25034a3007358a314c47f8f10793bfe906ad386eb3d07f8007917a9cf5861"},"schema_version":"1.0","source":{"id":"0907.2170","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0907.2170","created_at":"2026-07-04T17:18:03Z"},{"alias_kind":"arxiv_version","alias_value":"0907.2170v2","created_at":"2026-07-04T17:18:03Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0907.2170","created_at":"2026-07-04T17:18:03Z"},{"alias_kind":"pith_short_12","alias_value":"3SCLMNSVCKVM","created_at":"2026-07-04T17:18:03Z"},{"alias_kind":"pith_short_16","alias_value":"3SCLMNSVCKVMMQFE","created_at":"2026-07-04T17:18:03Z"},{"alias_kind":"pith_short_8","alias_value":"3SCLMNSV","created_at":"2026-07-04T17:18:03Z"}],"graph_snapshots":[{"event_id":"sha256:a682601d76bd28327c46afcc7a150c2a04a23c0a7567c96ead3ee3426bdaa082","target":"graph","created_at":"2026-07-04T17:18:03Z","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/0907.2170/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The only information available about an alleged source of entangled quantum states is the amount $S$ by which the Clauser-Horne-Shimony-Holt (CHSH) inequality is violated: nothing is known about the nature of the system or the measurements that are performed. We discuss how the quality of the source can be assessed in this black-box scenario, as compared to an ideal source that would produce maximally entangled states (more precisely, any state for which $S=2\\sqrt{2}$). To this end, we introduce several inequivalent notions of fidelity, each one related to the use one can make of the source af","authors_text":"C.-E. Bardyn, M. McKague, S. Massar, T. C. H. Liew, V. Scarani","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2009-07-13T14:02:21Z","title":"Device independent state estimation based on Bell's inequalities"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0907.2170","kind":"arxiv","version":2},"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":"sha256:3737cfafedd4d7b89ca1b907cfa84320dafe850acc3bca6e26acec7f96d281af","target":"record","created_at":"2026-07-04T17:18:03Z","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":"2602b4a3aa939be3f9c8a0f7938ef9b14b722b21bda1a5bd7598fab7c36625de","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2009-07-13T14:02:21Z","title_canon_sha256":"77c25034a3007358a314c47f8f10793bfe906ad386eb3d07f8007917a9cf5861"},"schema_version":"1.0","source":{"id":"0907.2170","kind":"arxiv","version":2}},"canonical_sha256":"dc84b6365512aac640a4f2ea1670efb7a9d9e7184d2c942cb71faa66c2f5b394","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"dc84b6365512aac640a4f2ea1670efb7a9d9e7184d2c942cb71faa66c2f5b394","first_computed_at":"2026-07-04T17:18:03.957890Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T17:18:03.957890Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"w9O4E7C/eW9ui1LLkwM8sggdJxXIsoIJJZvSVlzmmgl3lb3tIox7ASwMM/mSE9/1gIYFgn/zPCqbArWL/b4EAA==","signature_status":"signed_v1","signed_at":"2026-07-04T17:18:03.958252Z","signed_message":"canonical_sha256_bytes"},"source_id":"0907.2170","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:3737cfafedd4d7b89ca1b907cfa84320dafe850acc3bca6e26acec7f96d281af","sha256:a682601d76bd28327c46afcc7a150c2a04a23c0a7567c96ead3ee3426bdaa082"],"state_sha256":"be3225120794ab0d681094a438c35691ecdff5020e9497a3d05014d1a25003a6"}