{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2023:2USF77WA4BEIQVP6IVP7JNAGK2","short_pith_number":"pith:2USF77WA","canonical_record":{"source":{"id":"2306.05522","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2023-06-08T19:37:43Z","cross_cats_sorted":["eess.IV","physics.med-ph"],"title_canon_sha256":"8342769806232548854029d9a6f4b182edddeb5bb9c3b5d259c63a03c36262d4","abstract_canon_sha256":"31c14feb31528ea7aac146c1bc41e95540cf1fc559de28582a01c0cfbe0de4a3"},"schema_version":"1.0"},"canonical_sha256":"d5245ffec0e0488855fe455ff4b406569fb1fa64563e2f7003d0fef32bf69f29","source":{"kind":"arxiv","id":"2306.05522","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2306.05522","created_at":"2026-07-05T09:06:53Z"},{"alias_kind":"arxiv_version","alias_value":"2306.05522v2","created_at":"2026-07-05T09:06:53Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2306.05522","created_at":"2026-07-05T09:06:53Z"},{"alias_kind":"pith_short_12","alias_value":"2USF77WA4BEI","created_at":"2026-07-05T09:06:53Z"},{"alias_kind":"pith_short_16","alias_value":"2USF77WA4BEIQVP6","created_at":"2026-07-05T09:06:53Z"},{"alias_kind":"pith_short_8","alias_value":"2USF77WA","created_at":"2026-07-05T09:06:53Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2023:2USF77WA4BEIQVP6IVP7JNAGK2","target":"record","payload":{"canonical_record":{"source":{"id":"2306.05522","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2023-06-08T19:37:43Z","cross_cats_sorted":["eess.IV","physics.med-ph"],"title_canon_sha256":"8342769806232548854029d9a6f4b182edddeb5bb9c3b5d259c63a03c36262d4","abstract_canon_sha256":"31c14feb31528ea7aac146c1bc41e95540cf1fc559de28582a01c0cfbe0de4a3"},"schema_version":"1.0"},"canonical_sha256":"d5245ffec0e0488855fe455ff4b406569fb1fa64563e2f7003d0fef32bf69f29","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T09:06:53.923050Z","signature_b64":"/Y7ymhturesCbM6ecjVLTTJ4/mxt1N1hFqodO+lXqodkDa+ZFlLyFDCP6YkTSJwWeYCkJ26CAvSc3XTB8vP3Cw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d5245ffec0e0488855fe455ff4b406569fb1fa64563e2f7003d0fef32bf69f29","last_reissued_at":"2026-07-05T09:06:53.922572Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T09:06:53.922572Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2306.05522","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T09:06:53Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"nPapzJ6NpRYCDCGjnFgljzs17hv1Rv2bZiCLWHDg33CHTLoFY1Yn9u1SzjRGSrT0+HdsWv9UUBJ/Hih4GIy2BQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-09T21:52:24.513027Z"},"content_sha256":"b62d9f00004e906d0e6e272fa0993f8d2d440b644c46bf386a1e27836ffffa77","schema_version":"1.0","event_id":"sha256:b62d9f00004e906d0e6e272fa0993f8d2d440b644c46bf386a1e27836ffffa77"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2023:2USF77WA4BEIQVP6IVP7JNAGK2","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Quantum optimization algorithms for CT image segmentation from X-ray data","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["eess.IV","physics.med-ph"],"primary_cat":"quant-ph","authors_text":"Kyungtaek Jun","submitted_at":"2023-06-08T19:37:43Z","abstract_excerpt":"Computed tomography (CT) is an important imaging technique used in medical analysis of the internal structure of the human body. Previously, image segmentation methods were required after acquiring reconstructed CT images to obtain segmented CT images which made it susceptible to errors from both reconstruction and segmentation algorithms. However, this paper introduces a new approach using an advanced quantum optimization algorithm called quadratic unconstrained binary optimization (QUBO). This algorithm enables acquisition of segmented CT images from X-ray projection data with minimized disc"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2306.05522","kind":"arxiv","version":2},"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/2306.05522/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":"2026-07-05T09:06:53Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"pPxuxQ17ANcIlJUSdli7V7SGH+4eTqWFIrBYJTx+5msxus6eTYyec+wQWt7sCePXq1vb65YEaw/7jpc9OR21AA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-09T21:52:24.513767Z"},"content_sha256":"d141285e40a84412a66c7edbffbeaf1314d3f44986dcdade2446da59f8dfc487","schema_version":"1.0","event_id":"sha256:d141285e40a84412a66c7edbffbeaf1314d3f44986dcdade2446da59f8dfc487"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/2USF77WA4BEIQVP6IVP7JNAGK2/bundle.json","state_url":"https://pith.science/pith/2USF77WA4BEIQVP6IVP7JNAGK2/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/2USF77WA4BEIQVP6IVP7JNAGK2/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":"2026-08-09T21:52:24Z","links":{"resolver":"https://pith.science/pith/2USF77WA4BEIQVP6IVP7JNAGK2","bundle":"https://pith.science/pith/2USF77WA4BEIQVP6IVP7JNAGK2/bundle.json","state":"https://pith.science/pith/2USF77WA4BEIQVP6IVP7JNAGK2/state.json","well_known_bundle":"https://pith.science/.well-known/pith/2USF77WA4BEIQVP6IVP7JNAGK2/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2023:2USF77WA4BEIQVP6IVP7JNAGK2","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":"31c14feb31528ea7aac146c1bc41e95540cf1fc559de28582a01c0cfbe0de4a3","cross_cats_sorted":["eess.IV","physics.med-ph"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2023-06-08T19:37:43Z","title_canon_sha256":"8342769806232548854029d9a6f4b182edddeb5bb9c3b5d259c63a03c36262d4"},"schema_version":"1.0","source":{"id":"2306.05522","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2306.05522","created_at":"2026-07-05T09:06:53Z"},{"alias_kind":"arxiv_version","alias_value":"2306.05522v2","created_at":"2026-07-05T09:06:53Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2306.05522","created_at":"2026-07-05T09:06:53Z"},{"alias_kind":"pith_short_12","alias_value":"2USF77WA4BEI","created_at":"2026-07-05T09:06:53Z"},{"alias_kind":"pith_short_16","alias_value":"2USF77WA4BEIQVP6","created_at":"2026-07-05T09:06:53Z"},{"alias_kind":"pith_short_8","alias_value":"2USF77WA","created_at":"2026-07-05T09:06:53Z"}],"graph_snapshots":[{"event_id":"sha256:d141285e40a84412a66c7edbffbeaf1314d3f44986dcdade2446da59f8dfc487","target":"graph","created_at":"2026-07-05T09:06:53Z","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/2306.05522/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Computed tomography (CT) is an important imaging technique used in medical analysis of the internal structure of the human body. Previously, image segmentation methods were required after acquiring reconstructed CT images to obtain segmented CT images which made it susceptible to errors from both reconstruction and segmentation algorithms. However, this paper introduces a new approach using an advanced quantum optimization algorithm called quadratic unconstrained binary optimization (QUBO). This algorithm enables acquisition of segmented CT images from X-ray projection data with minimized disc","authors_text":"Kyungtaek Jun","cross_cats":["eess.IV","physics.med-ph"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2023-06-08T19:37:43Z","title":"Quantum optimization algorithms for CT image segmentation from X-ray data"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2306.05522","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:b62d9f00004e906d0e6e272fa0993f8d2d440b644c46bf386a1e27836ffffa77","target":"record","created_at":"2026-07-05T09:06:53Z","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":"31c14feb31528ea7aac146c1bc41e95540cf1fc559de28582a01c0cfbe0de4a3","cross_cats_sorted":["eess.IV","physics.med-ph"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2023-06-08T19:37:43Z","title_canon_sha256":"8342769806232548854029d9a6f4b182edddeb5bb9c3b5d259c63a03c36262d4"},"schema_version":"1.0","source":{"id":"2306.05522","kind":"arxiv","version":2}},"canonical_sha256":"d5245ffec0e0488855fe455ff4b406569fb1fa64563e2f7003d0fef32bf69f29","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"d5245ffec0e0488855fe455ff4b406569fb1fa64563e2f7003d0fef32bf69f29","first_computed_at":"2026-07-05T09:06:53.922572Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T09:06:53.922572Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"/Y7ymhturesCbM6ecjVLTTJ4/mxt1N1hFqodO+lXqodkDa+ZFlLyFDCP6YkTSJwWeYCkJ26CAvSc3XTB8vP3Cw==","signature_status":"signed_v1","signed_at":"2026-07-05T09:06:53.923050Z","signed_message":"canonical_sha256_bytes"},"source_id":"2306.05522","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:b62d9f00004e906d0e6e272fa0993f8d2d440b644c46bf386a1e27836ffffa77","sha256:d141285e40a84412a66c7edbffbeaf1314d3f44986dcdade2446da59f8dfc487"],"state_sha256":"4cefad932f48cb1eb2f2f5ca062f676e54a5753e6d15322f250b040e5b0353d5"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"cpXy2PZOj2U47Onq2Yx2zybwhBlpx7D73/BWm6yJBFL7uF2pHap9uwXebOAcvbiYM2vO/DZrbecd0fMcbOL6CA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-09T21:52:24.519021Z","bundle_sha256":"2f51dc2339b0ebb2848e5643e5b28d4802c213926dbd4082436b969dceed0ffc"}}