{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2025:CBWJWWHKOVQOSEAPJIA5L6WP4L","short_pith_number":"pith:CBWJWWHK","canonical_record":{"source":{"id":"2506.21937","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","primary_cat":"cs.LG","submitted_at":"2025-06-27T06:16:57Z","cross_cats_sorted":[],"title_canon_sha256":"b14eb036ef1a35bae7dab5c0094cbad35f507e586c26f200c69560e39fdf697e","abstract_canon_sha256":"2e9694da13feff326b2f7875bad319fe0c9078ec3e92659b1b5acc148604d2e5"},"schema_version":"1.0"},"canonical_sha256":"106c9b58ea7560e9100f4a01d5facfe2e1e7454b8b092b275e609c441216fce1","source":{"kind":"arxiv","id":"2506.21937","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2506.21937","created_at":"2026-07-05T11:28:18Z"},{"alias_kind":"arxiv_version","alias_value":"2506.21937v1","created_at":"2026-07-05T11:28:18Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2506.21937","created_at":"2026-07-05T11:28:18Z"},{"alias_kind":"pith_short_12","alias_value":"CBWJWWHKOVQO","created_at":"2026-07-05T11:28:18Z"},{"alias_kind":"pith_short_16","alias_value":"CBWJWWHKOVQOSEAP","created_at":"2026-07-05T11:28:18Z"},{"alias_kind":"pith_short_8","alias_value":"CBWJWWHK","created_at":"2026-07-05T11:28:18Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2025:CBWJWWHKOVQOSEAPJIA5L6WP4L","target":"record","payload":{"canonical_record":{"source":{"id":"2506.21937","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","primary_cat":"cs.LG","submitted_at":"2025-06-27T06:16:57Z","cross_cats_sorted":[],"title_canon_sha256":"b14eb036ef1a35bae7dab5c0094cbad35f507e586c26f200c69560e39fdf697e","abstract_canon_sha256":"2e9694da13feff326b2f7875bad319fe0c9078ec3e92659b1b5acc148604d2e5"},"schema_version":"1.0"},"canonical_sha256":"106c9b58ea7560e9100f4a01d5facfe2e1e7454b8b092b275e609c441216fce1","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T11:28:18.844422Z","signature_b64":"Ympx2L5+kV5+wlAuWb/eu9U18704if2MiqBZKj5iZWqy7gN55Tu7AOpbzSloakagFtkG+6eQOchQrQCN/wyvAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"106c9b58ea7560e9100f4a01d5facfe2e1e7454b8b092b275e609c441216fce1","last_reissued_at":"2026-07-05T11:28:18.843971Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T11:28:18.843971Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2506.21937","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":"2026-07-05T11:28:18Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"WO8fY5KY2e2hE5SiW70KE07gi/Zq4JPT9oP9oQfV87MPQCv1IAzBuXCUfXwq2gUWafcfX0XeZ5YYWvNKDZiKDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-07T23:34:32.902536Z"},"content_sha256":"ebd77c82a529b7041d052e8956bc94802e03aa22cb8640aadf15c007bf8b4e49","schema_version":"1.0","event_id":"sha256:ebd77c82a529b7041d052e8956bc94802e03aa22cb8640aadf15c007bf8b4e49"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2025:CBWJWWHKOVQOSEAPJIA5L6WP4L","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"HQCM-EBTC: A Hybrid Quantum-Classical Model for Explainable Brain Tumor Classification","license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","headline":"","cross_cats":[],"primary_cat":"cs.LG","authors_text":"Marwan Ait Haddou, Mohamed Bennai","submitted_at":"2025-06-27T06:16:57Z","abstract_excerpt":"We propose HQCM-EBTC, a hybrid quantum-classical model for automated brain tumor classification using MRI images. Trained on a dataset of 7,576 scans covering normal, meningioma, glioma, and pituitary classes, HQCM-EBTC integrates a 5-qubit, depth-2 quantum layer with 5 parallel circuits, optimized via AdamW and a composite loss blending cross-entropy and attention consistency.\n  HQCM-EBTC achieves 96.48% accuracy, substantially outperforming the classical baseline (86.72%). It delivers higher precision and F1-scores, especially for glioma detection. t-SNE projections reveal enhanced feature s"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2506.21937","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/2506.21937/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":"2026-07-05T11:28:18Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"tqdh1BxZ5Q2l+thirwgorikpBRZB3gvFm3EWtAtPUGZ+Y60CFuLI/Ly9tBGAV4lBCURUHVvnI4O2oYvQoEtVAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-07T23:34:32.903025Z"},"content_sha256":"320ac40d607e804293bfb2a35794d89c49352ddaf116207932a4cb6bf492b3cb","schema_version":"1.0","event_id":"sha256:320ac40d607e804293bfb2a35794d89c49352ddaf116207932a4cb6bf492b3cb"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/CBWJWWHKOVQOSEAPJIA5L6WP4L/bundle.json","state_url":"https://pith.science/pith/CBWJWWHKOVQOSEAPJIA5L6WP4L/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/CBWJWWHKOVQOSEAPJIA5L6WP4L/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":"2026-08-07T23:34:32Z","links":{"resolver":"https://pith.science/pith/CBWJWWHKOVQOSEAPJIA5L6WP4L","bundle":"https://pith.science/pith/CBWJWWHKOVQOSEAPJIA5L6WP4L/bundle.json","state":"https://pith.science/pith/CBWJWWHKOVQOSEAPJIA5L6WP4L/state.json","well_known_bundle":"https://pith.science/.well-known/pith/CBWJWWHKOVQOSEAPJIA5L6WP4L/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2025:CBWJWWHKOVQOSEAPJIA5L6WP4L","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":"2e9694da13feff326b2f7875bad319fe0c9078ec3e92659b1b5acc148604d2e5","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","primary_cat":"cs.LG","submitted_at":"2025-06-27T06:16:57Z","title_canon_sha256":"b14eb036ef1a35bae7dab5c0094cbad35f507e586c26f200c69560e39fdf697e"},"schema_version":"1.0","source":{"id":"2506.21937","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2506.21937","created_at":"2026-07-05T11:28:18Z"},{"alias_kind":"arxiv_version","alias_value":"2506.21937v1","created_at":"2026-07-05T11:28:18Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2506.21937","created_at":"2026-07-05T11:28:18Z"},{"alias_kind":"pith_short_12","alias_value":"CBWJWWHKOVQO","created_at":"2026-07-05T11:28:18Z"},{"alias_kind":"pith_short_16","alias_value":"CBWJWWHKOVQOSEAP","created_at":"2026-07-05T11:28:18Z"},{"alias_kind":"pith_short_8","alias_value":"CBWJWWHK","created_at":"2026-07-05T11:28:18Z"}],"graph_snapshots":[{"event_id":"sha256:320ac40d607e804293bfb2a35794d89c49352ddaf116207932a4cb6bf492b3cb","target":"graph","created_at":"2026-07-05T11:28:18Z","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/2506.21937/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We propose HQCM-EBTC, a hybrid quantum-classical model for automated brain tumor classification using MRI images. Trained on a dataset of 7,576 scans covering normal, meningioma, glioma, and pituitary classes, HQCM-EBTC integrates a 5-qubit, depth-2 quantum layer with 5 parallel circuits, optimized via AdamW and a composite loss blending cross-entropy and attention consistency.\n  HQCM-EBTC achieves 96.48% accuracy, substantially outperforming the classical baseline (86.72%). It delivers higher precision and F1-scores, especially for glioma detection. t-SNE projections reveal enhanced feature s","authors_text":"Marwan Ait Haddou, Mohamed Bennai","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","primary_cat":"cs.LG","submitted_at":"2025-06-27T06:16:57Z","title":"HQCM-EBTC: A Hybrid Quantum-Classical Model for Explainable Brain Tumor Classification"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2506.21937","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:ebd77c82a529b7041d052e8956bc94802e03aa22cb8640aadf15c007bf8b4e49","target":"record","created_at":"2026-07-05T11:28:18Z","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":"2e9694da13feff326b2f7875bad319fe0c9078ec3e92659b1b5acc148604d2e5","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","primary_cat":"cs.LG","submitted_at":"2025-06-27T06:16:57Z","title_canon_sha256":"b14eb036ef1a35bae7dab5c0094cbad35f507e586c26f200c69560e39fdf697e"},"schema_version":"1.0","source":{"id":"2506.21937","kind":"arxiv","version":1}},"canonical_sha256":"106c9b58ea7560e9100f4a01d5facfe2e1e7454b8b092b275e609c441216fce1","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"106c9b58ea7560e9100f4a01d5facfe2e1e7454b8b092b275e609c441216fce1","first_computed_at":"2026-07-05T11:28:18.843971Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T11:28:18.843971Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Ympx2L5+kV5+wlAuWb/eu9U18704if2MiqBZKj5iZWqy7gN55Tu7AOpbzSloakagFtkG+6eQOchQrQCN/wyvAw==","signature_status":"signed_v1","signed_at":"2026-07-05T11:28:18.844422Z","signed_message":"canonical_sha256_bytes"},"source_id":"2506.21937","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:ebd77c82a529b7041d052e8956bc94802e03aa22cb8640aadf15c007bf8b4e49","sha256:320ac40d607e804293bfb2a35794d89c49352ddaf116207932a4cb6bf492b3cb"],"state_sha256":"205acdf16bc778f9886dab817370e2c8f023ae1db1f00d61ceadd4fd52ae2afc"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"KrKGJnOozTbEQBnPDLS86JJ9OcwTJX8Wsdg5XcO2K9Ujg5xlWXBLezDKQp/EDSIZI4V+/t+v2syF7ExdHg95DQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-07T23:34:32.907025Z","bundle_sha256":"af7682898a72f1599f426f6693752bca78eef20aadb2f4da704f122c140f3875"}}