{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2000:PJMY2O6J7X7IP5FAPWQYKNO5EH","short_pith_number":"pith:PJMY2O6J","canonical_record":{"source":{"id":"astro-ph/0003426","kind":"arxiv","version":2},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2000-03-28T20:57:43Z","cross_cats_sorted":["nucl-th"],"title_canon_sha256":"986e6edc82e29c520f8591f595047a2859842c282163f9ef8df08475e175ca22","abstract_canon_sha256":"7c88fa395ce1ddb8ebdbe9e9f84ba9221b6585f159b3b33b29a66521876ae12e"},"schema_version":"1.0"},"canonical_sha256":"7a598d3bc9fdfe87f4a07da18535dd21dcb7af7fba782e20740767f358204f8e","source":{"kind":"arxiv","id":"astro-ph/0003426","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0003426","created_at":"2026-07-04T16:16:14Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0003426v2","created_at":"2026-07-04T16:16:14Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0003426","created_at":"2026-07-04T16:16:14Z"},{"alias_kind":"pith_short_12","alias_value":"PJMY2O6J7X7I","created_at":"2026-07-04T16:16:14Z"},{"alias_kind":"pith_short_16","alias_value":"PJMY2O6J7X7IP5FA","created_at":"2026-07-04T16:16:14Z"},{"alias_kind":"pith_short_8","alias_value":"PJMY2O6J","created_at":"2026-07-04T16:16:14Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2000:PJMY2O6J7X7IP5FAPWQYKNO5EH","target":"record","payload":{"canonical_record":{"source":{"id":"astro-ph/0003426","kind":"arxiv","version":2},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2000-03-28T20:57:43Z","cross_cats_sorted":["nucl-th"],"title_canon_sha256":"986e6edc82e29c520f8591f595047a2859842c282163f9ef8df08475e175ca22","abstract_canon_sha256":"7c88fa395ce1ddb8ebdbe9e9f84ba9221b6585f159b3b33b29a66521876ae12e"},"schema_version":"1.0"},"canonical_sha256":"7a598d3bc9fdfe87f4a07da18535dd21dcb7af7fba782e20740767f358204f8e","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T16:16:14.204370Z","signature_b64":"2GxigIVZaJs+dyER5D99rhPUsFRZIOQf1CYvDha69FchfmaiQO/M65vVkr549I+dJwaPQ7MReKVreVud+JAkDg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"7a598d3bc9fdfe87f4a07da18535dd21dcb7af7fba782e20740767f358204f8e","last_reissued_at":"2026-07-04T16:16:14.204009Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T16:16:14.204009Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"astro-ph/0003426","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":"2026-07-04T16:16:14Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"CBdkwqMhnrMBDDpwrLjoNlgMpeMWAU14Ts/wMp6Y1s66THW8h1SMHCjvV5HJvGmhawwbZ1j89H+JLN13ENWHCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-12T17:55:57.132490Z"},"content_sha256":"f3137d09fa449e2d166025339b2a7c1dfa503a1bb4bd591f72ab7ba86123dbb7","schema_version":"1.0","event_id":"sha256:f3137d09fa449e2d166025339b2a7c1dfa503a1bb4bd591f72ab7ba86123dbb7"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2000:PJMY2O6J7X7IP5FAPWQYKNO5EH","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Possible evidence of quark matter in neutron star X-ray binaries","license":"","headline":"","cross_cats":["nucl-th"],"primary_cat":"astro-ph","authors_text":"F. Weber (Lawrence Berkeley National Laboratory), Norman K. Glendenning","submitted_at":"2000-03-28T20:57:43Z","abstract_excerpt":"We study the spin evolution of X-ray neutron stars in binary systems, which are being spun up by mass transfer from accretion disks. Our investigation reveals that a quark phase transition resulting from the changing central density induced by the changing spin, can lead to a pronounced peak in the frequency distribution of X-ray neutron stars. This finding provides one of several possible explanations available in the literature, or at least a contributor to part of the observed anomalous frequency distribution of neutron stars in low-mass X-ray binaries (LMXBs), which lie in a narrow band ce"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0003426","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/astro-ph/0003426/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":"2026-07-04T16:16:14Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"HkEs6YOS3Pp2eVyGSLW4BsBn+Nz1ukWfJl2itu7pFsrIcUbo3GkfREAxZis9nnyPUFL1ODYWdCZAshtoopRpDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-12T17:55:57.140623Z"},"content_sha256":"fa03469edbc11b9847c2cc7980e63c5d30b80a199b1286b42bfcf88d6856fad3","schema_version":"1.0","event_id":"sha256:fa03469edbc11b9847c2cc7980e63c5d30b80a199b1286b42bfcf88d6856fad3"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/PJMY2O6J7X7IP5FAPWQYKNO5EH/bundle.json","state_url":"https://pith.science/pith/PJMY2O6J7X7IP5FAPWQYKNO5EH/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/PJMY2O6J7X7IP5FAPWQYKNO5EH/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":"2026-08-12T17:55:57Z","links":{"resolver":"https://pith.science/pith/PJMY2O6J7X7IP5FAPWQYKNO5EH","bundle":"https://pith.science/pith/PJMY2O6J7X7IP5FAPWQYKNO5EH/bundle.json","state":"https://pith.science/pith/PJMY2O6J7X7IP5FAPWQYKNO5EH/state.json","well_known_bundle":"https://pith.science/.well-known/pith/PJMY2O6J7X7IP5FAPWQYKNO5EH/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2000:PJMY2O6J7X7IP5FAPWQYKNO5EH","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":"7c88fa395ce1ddb8ebdbe9e9f84ba9221b6585f159b3b33b29a66521876ae12e","cross_cats_sorted":["nucl-th"],"license":"","primary_cat":"astro-ph","submitted_at":"2000-03-28T20:57:43Z","title_canon_sha256":"986e6edc82e29c520f8591f595047a2859842c282163f9ef8df08475e175ca22"},"schema_version":"1.0","source":{"id":"astro-ph/0003426","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0003426","created_at":"2026-07-04T16:16:14Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0003426v2","created_at":"2026-07-04T16:16:14Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0003426","created_at":"2026-07-04T16:16:14Z"},{"alias_kind":"pith_short_12","alias_value":"PJMY2O6J7X7I","created_at":"2026-07-04T16:16:14Z"},{"alias_kind":"pith_short_16","alias_value":"PJMY2O6J7X7IP5FA","created_at":"2026-07-04T16:16:14Z"},{"alias_kind":"pith_short_8","alias_value":"PJMY2O6J","created_at":"2026-07-04T16:16:14Z"}],"graph_snapshots":[{"event_id":"sha256:fa03469edbc11b9847c2cc7980e63c5d30b80a199b1286b42bfcf88d6856fad3","target":"graph","created_at":"2026-07-04T16:16:14Z","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/astro-ph/0003426/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We study the spin evolution of X-ray neutron stars in binary systems, which are being spun up by mass transfer from accretion disks. Our investigation reveals that a quark phase transition resulting from the changing central density induced by the changing spin, can lead to a pronounced peak in the frequency distribution of X-ray neutron stars. This finding provides one of several possible explanations available in the literature, or at least a contributor to part of the observed anomalous frequency distribution of neutron stars in low-mass X-ray binaries (LMXBs), which lie in a narrow band ce","authors_text":"F. Weber (Lawrence Berkeley National Laboratory), Norman K. Glendenning","cross_cats":["nucl-th"],"headline":"","license":"","primary_cat":"astro-ph","submitted_at":"2000-03-28T20:57:43Z","title":"Possible evidence of quark matter in neutron star X-ray binaries"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0003426","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:f3137d09fa449e2d166025339b2a7c1dfa503a1bb4bd591f72ab7ba86123dbb7","target":"record","created_at":"2026-07-04T16:16:14Z","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":"7c88fa395ce1ddb8ebdbe9e9f84ba9221b6585f159b3b33b29a66521876ae12e","cross_cats_sorted":["nucl-th"],"license":"","primary_cat":"astro-ph","submitted_at":"2000-03-28T20:57:43Z","title_canon_sha256":"986e6edc82e29c520f8591f595047a2859842c282163f9ef8df08475e175ca22"},"schema_version":"1.0","source":{"id":"astro-ph/0003426","kind":"arxiv","version":2}},"canonical_sha256":"7a598d3bc9fdfe87f4a07da18535dd21dcb7af7fba782e20740767f358204f8e","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"7a598d3bc9fdfe87f4a07da18535dd21dcb7af7fba782e20740767f358204f8e","first_computed_at":"2026-07-04T16:16:14.204009Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T16:16:14.204009Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"2GxigIVZaJs+dyER5D99rhPUsFRZIOQf1CYvDha69FchfmaiQO/M65vVkr549I+dJwaPQ7MReKVreVud+JAkDg==","signature_status":"signed_v1","signed_at":"2026-07-04T16:16:14.204370Z","signed_message":"canonical_sha256_bytes"},"source_id":"astro-ph/0003426","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:f3137d09fa449e2d166025339b2a7c1dfa503a1bb4bd591f72ab7ba86123dbb7","sha256:fa03469edbc11b9847c2cc7980e63c5d30b80a199b1286b42bfcf88d6856fad3"],"state_sha256":"492d5b9df708249c84d49aeea51d75b39c1d540c902bbf55e4a087369ffc1655"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ENEVOLyYxviP21aCVIJ2U49C2X8hUteXf548+zS8NX9y59fy/CLKOeC22PaYzM8cUt90awfU6d/5jwo8juR9Cg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-12T17:55:57.168764Z","bundle_sha256":"ce3c69286de0df96f396a7765452d9fbfa3edcab80a098a2329437ddb6d02997"}}