{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2023:YXPYNNH5V5IHOSTT7JWUJIURR4","short_pith_number":"pith:YXPYNNH5","canonical_record":{"source":{"id":"2303.07603","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.CY","submitted_at":"2023-03-14T02:50:40Z","cross_cats_sorted":["cs.AI"],"title_canon_sha256":"e550ba682614bcc096944fdf6462e8dc8ee7177320d2b8a2b20dd537b74949e6","abstract_canon_sha256":"89fe49491c891ceeee159918444af3165323f91b3c4e9a832809c30c70a3cef9"},"schema_version":"1.0"},"canonical_sha256":"c5df86b4fdaf50774a73fa6d44a2918f121ff002e78963bc25ff927bd4b04339","source":{"kind":"arxiv","id":"2303.07603","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2303.07603","created_at":"2026-07-05T05:51:08Z"},{"alias_kind":"arxiv_version","alias_value":"2303.07603v1","created_at":"2026-07-05T05:51:08Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2303.07603","created_at":"2026-07-05T05:51:08Z"},{"alias_kind":"pith_short_12","alias_value":"YXPYNNH5V5IH","created_at":"2026-07-05T05:51:08Z"},{"alias_kind":"pith_short_16","alias_value":"YXPYNNH5V5IHOSTT","created_at":"2026-07-05T05:51:08Z"},{"alias_kind":"pith_short_8","alias_value":"YXPYNNH5","created_at":"2026-07-05T05:51:08Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2023:YXPYNNH5V5IHOSTT7JWUJIURR4","target":"record","payload":{"canonical_record":{"source":{"id":"2303.07603","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.CY","submitted_at":"2023-03-14T02:50:40Z","cross_cats_sorted":["cs.AI"],"title_canon_sha256":"e550ba682614bcc096944fdf6462e8dc8ee7177320d2b8a2b20dd537b74949e6","abstract_canon_sha256":"89fe49491c891ceeee159918444af3165323f91b3c4e9a832809c30c70a3cef9"},"schema_version":"1.0"},"canonical_sha256":"c5df86b4fdaf50774a73fa6d44a2918f121ff002e78963bc25ff927bd4b04339","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T05:51:08.666845Z","signature_b64":"YoKLn+X+pXfPLNHwFX9WnLgFaqSYqcPm4slSQ1x0RB85+gQjJ7KvW+ZA6kEJMtEbiEVUHyxBSeAaSjthg9iuCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"c5df86b4fdaf50774a73fa6d44a2918f121ff002e78963bc25ff927bd4b04339","last_reissued_at":"2026-07-05T05:51:08.666338Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T05:51:08.666338Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2303.07603","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":"2026-07-05T05:51:08Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"2kisZC4ybbCoPO7XQKUJ1wIrIoblJdadLYSFsqn6f6kHyD8mFjwweUg9UT3eGo+07zrhOTDHsfCcLc0Co0EWBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-11T00:29:03.797093Z"},"content_sha256":"e44213461f02c18e2d8527e88badaf2e7de69715658636754185ceb35a9aa4b8","schema_version":"1.0","event_id":"sha256:e44213461f02c18e2d8527e88badaf2e7de69715658636754185ceb35a9aa4b8"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2023:YXPYNNH5V5IHOSTT7JWUJIURR4","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Redrawing attendance boundaries to promote racial and ethnic diversity in elementary schools","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["cs.AI"],"primary_cat":"cs.CY","authors_text":"Cassandra Overney, Christine Vega-Pourheydarian, Deb Roy, Doug Beeferman, Nabeel Gillani, Pascal Van Hentenryck","submitted_at":"2023-03-14T02:50:40Z","abstract_excerpt":"Most US school districts draw \"attendance boundaries\" to define catchment areas that assign students to schools near their homes, often recapitulating neighborhood demographic segregation in schools. Focusing on elementary schools, we ask: how much might we reduce school segregation by redrawing attendance boundaries? Combining parent preference data with methods from combinatorial optimization, we simulate alternative boundaries for 98 US school districts serving over 3 million elementary-aged students, minimizing White/non-White segregation while mitigating changes to travel times and school"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2303.07603","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/2303.07603/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":"2026-07-05T05:51:08Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"t7gBMpyXNfQjTBW4+2oHzsExHVhBuqPg9s/a9Ss2e+pHanDDM6ZpwB6pudsTOM4AlFeYPRb9EtLQg0RDMiOoAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-11T00:29:03.797598Z"},"content_sha256":"cd98c7032ebc8df262f48ab8f93b8a54468604c3c0776f6b388f8452ffdb5d05","schema_version":"1.0","event_id":"sha256:cd98c7032ebc8df262f48ab8f93b8a54468604c3c0776f6b388f8452ffdb5d05"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/YXPYNNH5V5IHOSTT7JWUJIURR4/bundle.json","state_url":"https://pith.science/pith/YXPYNNH5V5IHOSTT7JWUJIURR4/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/YXPYNNH5V5IHOSTT7JWUJIURR4/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":"2026-08-11T00:29:03Z","links":{"resolver":"https://pith.science/pith/YXPYNNH5V5IHOSTT7JWUJIURR4","bundle":"https://pith.science/pith/YXPYNNH5V5IHOSTT7JWUJIURR4/bundle.json","state":"https://pith.science/pith/YXPYNNH5V5IHOSTT7JWUJIURR4/state.json","well_known_bundle":"https://pith.science/.well-known/pith/YXPYNNH5V5IHOSTT7JWUJIURR4/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2023:YXPYNNH5V5IHOSTT7JWUJIURR4","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":"89fe49491c891ceeee159918444af3165323f91b3c4e9a832809c30c70a3cef9","cross_cats_sorted":["cs.AI"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.CY","submitted_at":"2023-03-14T02:50:40Z","title_canon_sha256":"e550ba682614bcc096944fdf6462e8dc8ee7177320d2b8a2b20dd537b74949e6"},"schema_version":"1.0","source":{"id":"2303.07603","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2303.07603","created_at":"2026-07-05T05:51:08Z"},{"alias_kind":"arxiv_version","alias_value":"2303.07603v1","created_at":"2026-07-05T05:51:08Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2303.07603","created_at":"2026-07-05T05:51:08Z"},{"alias_kind":"pith_short_12","alias_value":"YXPYNNH5V5IH","created_at":"2026-07-05T05:51:08Z"},{"alias_kind":"pith_short_16","alias_value":"YXPYNNH5V5IHOSTT","created_at":"2026-07-05T05:51:08Z"},{"alias_kind":"pith_short_8","alias_value":"YXPYNNH5","created_at":"2026-07-05T05:51:08Z"}],"graph_snapshots":[{"event_id":"sha256:cd98c7032ebc8df262f48ab8f93b8a54468604c3c0776f6b388f8452ffdb5d05","target":"graph","created_at":"2026-07-05T05:51:08Z","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/2303.07603/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Most US school districts draw \"attendance boundaries\" to define catchment areas that assign students to schools near their homes, often recapitulating neighborhood demographic segregation in schools. Focusing on elementary schools, we ask: how much might we reduce school segregation by redrawing attendance boundaries? Combining parent preference data with methods from combinatorial optimization, we simulate alternative boundaries for 98 US school districts serving over 3 million elementary-aged students, minimizing White/non-White segregation while mitigating changes to travel times and school","authors_text":"Cassandra Overney, Christine Vega-Pourheydarian, Deb Roy, Doug Beeferman, Nabeel Gillani, Pascal Van Hentenryck","cross_cats":["cs.AI"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.CY","submitted_at":"2023-03-14T02:50:40Z","title":"Redrawing attendance boundaries to promote racial and ethnic diversity in elementary schools"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2303.07603","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:e44213461f02c18e2d8527e88badaf2e7de69715658636754185ceb35a9aa4b8","target":"record","created_at":"2026-07-05T05:51:08Z","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":"89fe49491c891ceeee159918444af3165323f91b3c4e9a832809c30c70a3cef9","cross_cats_sorted":["cs.AI"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.CY","submitted_at":"2023-03-14T02:50:40Z","title_canon_sha256":"e550ba682614bcc096944fdf6462e8dc8ee7177320d2b8a2b20dd537b74949e6"},"schema_version":"1.0","source":{"id":"2303.07603","kind":"arxiv","version":1}},"canonical_sha256":"c5df86b4fdaf50774a73fa6d44a2918f121ff002e78963bc25ff927bd4b04339","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"c5df86b4fdaf50774a73fa6d44a2918f121ff002e78963bc25ff927bd4b04339","first_computed_at":"2026-07-05T05:51:08.666338Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T05:51:08.666338Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"YoKLn+X+pXfPLNHwFX9WnLgFaqSYqcPm4slSQ1x0RB85+gQjJ7KvW+ZA6kEJMtEbiEVUHyxBSeAaSjthg9iuCg==","signature_status":"signed_v1","signed_at":"2026-07-05T05:51:08.666845Z","signed_message":"canonical_sha256_bytes"},"source_id":"2303.07603","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:e44213461f02c18e2d8527e88badaf2e7de69715658636754185ceb35a9aa4b8","sha256:cd98c7032ebc8df262f48ab8f93b8a54468604c3c0776f6b388f8452ffdb5d05"],"state_sha256":"c00f8e4faf686e708e529b726a16a5d75db76d6ad91597e6a61360ed5541aae7"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"VEsgDf26s0N2jpKqSu5TXqo//W3Ulz5Vi2JeOITrovRdp3KmISFfQ4umx8iGJFzZGICruQSwt6pFUYmhYV5qBQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-11T00:29:03.801795Z","bundle_sha256":"df10243a820af1f8706642b23da88c0172ccdc6182f2be48fd3f715f76cca3f7"}}