{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2026:G4HLN4LMOEBSX5JWOHDNEJDM6K","short_pith_number":"pith:G4HLN4LM","canonical_record":{"source":{"id":"2607.24288","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2026-07-27T11:37:40Z","cross_cats_sorted":["cs.NI","quant-ph"],"title_canon_sha256":"40963125d8a124a75811db80bdf99f8f7d73d2226a491c3d96032defe320b2fe","abstract_canon_sha256":"c51fc289ff0ef64756d8899fd169096c6d83a0bca1da5f26111d7121d49a4a98"},"schema_version":"1.0"},"canonical_sha256":"370eb6f16c71032bf53671c6d2246cf280d2e8715dde53e572a0f72014b7b336","source":{"kind":"arxiv","id":"2607.24288","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2607.24288","created_at":"2026-07-28T02:23:55Z"},{"alias_kind":"arxiv_version","alias_value":"2607.24288v1","created_at":"2026-07-28T02:23:55Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2607.24288","created_at":"2026-07-28T02:23:55Z"},{"alias_kind":"pith_short_12","alias_value":"G4HLN4LMOEBS","created_at":"2026-07-28T02:23:55Z"},{"alias_kind":"pith_short_16","alias_value":"G4HLN4LMOEBSX5JW","created_at":"2026-07-28T02:23:55Z"},{"alias_kind":"pith_short_8","alias_value":"G4HLN4LM","created_at":"2026-07-28T02:23:55Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2026:G4HLN4LMOEBSX5JWOHDNEJDM6K","target":"record","payload":{"canonical_record":{"source":{"id":"2607.24288","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2026-07-27T11:37:40Z","cross_cats_sorted":["cs.NI","quant-ph"],"title_canon_sha256":"40963125d8a124a75811db80bdf99f8f7d73d2226a491c3d96032defe320b2fe","abstract_canon_sha256":"c51fc289ff0ef64756d8899fd169096c6d83a0bca1da5f26111d7121d49a4a98"},"schema_version":"1.0"},"canonical_sha256":"370eb6f16c71032bf53671c6d2246cf280d2e8715dde53e572a0f72014b7b336","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-28T02:23:55.586340Z","signature_b64":"fZpposmtywAqeDrl9LCD3XlxfxN+0vLDDN+fiYRW676Dnch+u1CV/0B7aoqZkDbwjMG1biZSrEbXK77zU9frBg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"370eb6f16c71032bf53671c6d2246cf280d2e8715dde53e572a0f72014b7b336","last_reissued_at":"2026-07-28T02:23:55.585526Z","signature_status":"signed_v1","first_computed_at":"2026-07-28T02:23:55.585526Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2607.24288","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":"2026-07-28T02:23:55Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Mt7BwIPET2h1qx3HgJCMRltf7ALT1lr7U+ZFlQ4w60gY6gJrLEug/tyLcFGZZeoGd0Ybni1LtLLcVDRJNd98Ag==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-13T16:15:30.718974Z"},"content_sha256":"496741ff50f04627c92b93637a074d635708b243bdf8fc8cbbd33d1abe6026c1","schema_version":"1.0","event_id":"sha256:496741ff50f04627c92b93637a074d635708b243bdf8fc8cbbd33d1abe6026c1"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2026:G4HLN4LMOEBSX5JWOHDNEJDM6K","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Superpixel-Based QUBO for Scalable Quantum-Enhanced Medical Image Segmentation","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cs.NI","quant-ph"],"primary_cat":"cs.CV","authors_text":"Ahmed Farouk, Laia Domingo, Mahdi Chehimi, Mohammad Chalhoub, Omar Alhussein, Saif Al-Kuwari","submitted_at":"2026-07-27T11:37:40Z","abstract_excerpt":"Quadratic unconstrained binary optimization (QUBO) has emerged as a powerful framework for medical computing problems. Binary decision variables naturally represent clinical choices, making QUBO formulations well-suited for quantum annealing hardware. However, a fundamental scalability challenge limits practical deployment: problem size grows rapidly with input dimensionality, creating computational bottlenecks that restrict applications to simplified scenarios. This paper addresses this challenge through hierarchical problem reduction, as demonstrated in medical image segmentation, where pixe"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2607.24288","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/2607.24288/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":"2026-07-28T02:23:55Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"kJ/ZcsAM4Xfyr8iQKF7VKgAKDqw2CLWeU/+VQKehBZ31WIOqvPXsPtkt1RNBiMbE0ayvvVyFiz7qYuRjdPtbBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-13T16:15:30.719285Z"},"content_sha256":"f988d33738b1188cdbdc09196d6102b5978bb4101068ab1a8dd637ec12f451ac","schema_version":"1.0","event_id":"sha256:f988d33738b1188cdbdc09196d6102b5978bb4101068ab1a8dd637ec12f451ac"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/G4HLN4LMOEBSX5JWOHDNEJDM6K/bundle.json","state_url":"https://pith.science/pith/G4HLN4LMOEBSX5JWOHDNEJDM6K/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/G4HLN4LMOEBSX5JWOHDNEJDM6K/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":"2026-08-13T16:15:30Z","links":{"resolver":"https://pith.science/pith/G4HLN4LMOEBSX5JWOHDNEJDM6K","bundle":"https://pith.science/pith/G4HLN4LMOEBSX5JWOHDNEJDM6K/bundle.json","state":"https://pith.science/pith/G4HLN4LMOEBSX5JWOHDNEJDM6K/state.json","well_known_bundle":"https://pith.science/.well-known/pith/G4HLN4LMOEBSX5JWOHDNEJDM6K/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:G4HLN4LMOEBSX5JWOHDNEJDM6K","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":"c51fc289ff0ef64756d8899fd169096c6d83a0bca1da5f26111d7121d49a4a98","cross_cats_sorted":["cs.NI","quant-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2026-07-27T11:37:40Z","title_canon_sha256":"40963125d8a124a75811db80bdf99f8f7d73d2226a491c3d96032defe320b2fe"},"schema_version":"1.0","source":{"id":"2607.24288","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2607.24288","created_at":"2026-07-28T02:23:55Z"},{"alias_kind":"arxiv_version","alias_value":"2607.24288v1","created_at":"2026-07-28T02:23:55Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2607.24288","created_at":"2026-07-28T02:23:55Z"},{"alias_kind":"pith_short_12","alias_value":"G4HLN4LMOEBS","created_at":"2026-07-28T02:23:55Z"},{"alias_kind":"pith_short_16","alias_value":"G4HLN4LMOEBSX5JW","created_at":"2026-07-28T02:23:55Z"},{"alias_kind":"pith_short_8","alias_value":"G4HLN4LM","created_at":"2026-07-28T02:23:55Z"}],"graph_snapshots":[{"event_id":"sha256:f988d33738b1188cdbdc09196d6102b5978bb4101068ab1a8dd637ec12f451ac","target":"graph","created_at":"2026-07-28T02:23:55Z","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/2607.24288/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Quadratic unconstrained binary optimization (QUBO) has emerged as a powerful framework for medical computing problems. Binary decision variables naturally represent clinical choices, making QUBO formulations well-suited for quantum annealing hardware. However, a fundamental scalability challenge limits practical deployment: problem size grows rapidly with input dimensionality, creating computational bottlenecks that restrict applications to simplified scenarios. This paper addresses this challenge through hierarchical problem reduction, as demonstrated in medical image segmentation, where pixe","authors_text":"Ahmed Farouk, Laia Domingo, Mahdi Chehimi, Mohammad Chalhoub, Omar Alhussein, Saif Al-Kuwari","cross_cats":["cs.NI","quant-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2026-07-27T11:37:40Z","title":"Superpixel-Based QUBO for Scalable Quantum-Enhanced Medical Image Segmentation"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2607.24288","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":"sha256:496741ff50f04627c92b93637a074d635708b243bdf8fc8cbbd33d1abe6026c1","target":"record","created_at":"2026-07-28T02:23:55Z","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":"c51fc289ff0ef64756d8899fd169096c6d83a0bca1da5f26111d7121d49a4a98","cross_cats_sorted":["cs.NI","quant-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2026-07-27T11:37:40Z","title_canon_sha256":"40963125d8a124a75811db80bdf99f8f7d73d2226a491c3d96032defe320b2fe"},"schema_version":"1.0","source":{"id":"2607.24288","kind":"arxiv","version":1}},"canonical_sha256":"370eb6f16c71032bf53671c6d2246cf280d2e8715dde53e572a0f72014b7b336","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"370eb6f16c71032bf53671c6d2246cf280d2e8715dde53e572a0f72014b7b336","first_computed_at":"2026-07-28T02:23:55.585526Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-28T02:23:55.585526Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"fZpposmtywAqeDrl9LCD3XlxfxN+0vLDDN+fiYRW676Dnch+u1CV/0B7aoqZkDbwjMG1biZSrEbXK77zU9frBg==","signature_status":"signed_v1","signed_at":"2026-07-28T02:23:55.586340Z","signed_message":"canonical_sha256_bytes"},"source_id":"2607.24288","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:496741ff50f04627c92b93637a074d635708b243bdf8fc8cbbd33d1abe6026c1","sha256:f988d33738b1188cdbdc09196d6102b5978bb4101068ab1a8dd637ec12f451ac"],"state_sha256":"5844bb849ade10ae57383b92cf90209d5d6b7aa81f381422de7a87c8ccfb46a3"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"2zKT7+2pUVW9TpjOdKwOGcPnJOhvYxnVynNySV2tAQASBdbuLnWIVj0HJYnnKYllPKfybzGeUz7wuNC95aYBAA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-13T16:15:30.723301Z","bundle_sha256":"7143f52fe7c54b03a03cf3bf4feb4007c2556509a794f0c71e7fe39bf366b32b"}}