{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:536Y2UZDHDQCL3NJ7QXE25IMRF","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":"47c34c579d32b636078411c99b0f88c82156d88ec30b9fb47698a8afec2f1d90","cross_cats_sorted":["astro-ph.HE"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2012-10-23T19:27:37Z","title_canon_sha256":"fee3ccfca923978cf47e38376ac1509cb0f705c808eff1de66b1479b6c5b5479"},"schema_version":"1.0","source":{"id":"1210.6333","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1210.6333","created_at":"2026-05-18T03:30:41Z"},{"alias_kind":"arxiv_version","alias_value":"1210.6333v2","created_at":"2026-05-18T03:30:41Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1210.6333","created_at":"2026-05-18T03:30:41Z"},{"alias_kind":"pith_short_12","alias_value":"536Y2UZDHDQC","created_at":"2026-05-18T12:26:53Z"},{"alias_kind":"pith_short_16","alias_value":"536Y2UZDHDQCL3NJ","created_at":"2026-05-18T12:26:53Z"},{"alias_kind":"pith_short_8","alias_value":"536Y2UZD","created_at":"2026-05-18T12:26:53Z"}],"graph_snapshots":[{"event_id":"sha256:0a096854bca42770408090f4a08cf51517e5a50791bd6ad10b418fc0bd4de037","target":"graph","created_at":"2026-05-18T03:30:41Z","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"},"paper":{"abstract_excerpt":"Ultracompact X-ray binaries (UCXBs) have orbital periods shorter than about 80 minutes and typically consist of a neutron star that accretes hydrogen-poor matter from a white dwarf companion. Angular momentum loss via gravitational wave radiation drives mass transfer via Roche-lobe overflow. The late-time evolution of UCXBs is poorly understood -- all 13 known systems are relatively young and it is not clear why. One question is whether old UCXBs actually still exist, or have they become disrupted at some point? Alternatively they may be simply too faint to see. To investigate this, we apply t","authors_text":"G. Nelemans, L. M. van Haaften, R. Voss","cross_cats":["astro-ph.HE"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2012-10-23T19:27:37Z","title":"Late-time evolution of ultracompact X-ray binaries"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1210.6333","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":"sha256:1e0a238c4d63ce1ba131d0510abc22e5e38930cf53789b606a23fb90101973cf","target":"record","created_at":"2026-05-18T03:30:41Z","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":"47c34c579d32b636078411c99b0f88c82156d88ec30b9fb47698a8afec2f1d90","cross_cats_sorted":["astro-ph.HE"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2012-10-23T19:27:37Z","title_canon_sha256":"fee3ccfca923978cf47e38376ac1509cb0f705c808eff1de66b1479b6c5b5479"},"schema_version":"1.0","source":{"id":"1210.6333","kind":"arxiv","version":2}},"canonical_sha256":"eefd8d532338e025eda9fc2e4d750c897cd4e6e94e8e9a3438e7ed71b177983d","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"eefd8d532338e025eda9fc2e4d750c897cd4e6e94e8e9a3438e7ed71b177983d","first_computed_at":"2026-05-18T03:30:41.596356Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:30:41.596356Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"840YJgUSkkFLV171fXg0RK3/2lkOMzHhvF0aobZWrP9LiRrM4pHmIlRFlSit95PzztoTFwwvmEjXh7fiY6B5CQ==","signature_status":"signed_v1","signed_at":"2026-05-18T03:30:41.597169Z","signed_message":"canonical_sha256_bytes"},"source_id":"1210.6333","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:1e0a238c4d63ce1ba131d0510abc22e5e38930cf53789b606a23fb90101973cf","sha256:0a096854bca42770408090f4a08cf51517e5a50791bd6ad10b418fc0bd4de037"],"state_sha256":"e7482f441200d5f9ab4a428047ab554c74f50aa50a85cdbc446f50bafee7e85a"}