{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2023:LS5PJZNJPUPN4CTDJPL73HQHMD","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":"8bd372a206c28b03b697197289465b320743fed331c5e358f68188f8db02024f","cross_cats_sorted":[],"license":"http://creativecommons.org/publicdomain/zero/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2023-07-13T18:00:00Z","title_canon_sha256":"36430ccddd6af3e228000274b6fed54bdc63c0c69c4d1975bbd26fde83e40c37"},"schema_version":"1.0","source":{"id":"2307.06988","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2307.06988","created_at":"2026-07-05T06:30:48Z"},{"alias_kind":"arxiv_version","alias_value":"2307.06988v1","created_at":"2026-07-05T06:30:48Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2307.06988","created_at":"2026-07-05T06:30:48Z"},{"alias_kind":"pith_short_12","alias_value":"LS5PJZNJPUPN","created_at":"2026-07-05T06:30:48Z"},{"alias_kind":"pith_short_16","alias_value":"LS5PJZNJPUPN4CTD","created_at":"2026-07-05T06:30:48Z"},{"alias_kind":"pith_short_8","alias_value":"LS5PJZNJ","created_at":"2026-07-05T06:30:48Z"}],"graph_snapshots":[{"event_id":"sha256:7230e6df3e96ba7fe213a37e94ebe5e2f2c00e468680fdbce9b5cb5a1514c9d5","target":"graph","created_at":"2026-07-05T06:30:48Z","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/2307.06988/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The black hole candidate XTE J2012+381 underwent an outburst at the end of 2022. We analyzed 105 NICER observations and 2 NuSTAR observations of the source during the outburst. The NuSTAR observations of the $M \\sim10M_\\odot$ black hole indicate clear signs of relativistic disk reflection, which we modeled to measure a BH spin of $a=0.988^{+0.008}_{-0.030}$ and an inclination of $\\theta=68^{+6}_{-11}$ degrees ($1\\sigma$ statistical errors). In our analysis, we test an array of models and examine the effect of fitting NuSTAR spectra alone versus fitting simultaneously with NICER. We find that w","authors_text":"Abderahmen Zoghbi, Andrew C. Fabian, John A. Tomsick, Jon M. Miller, McKinley C. Brumback, Paul A. Draghis","cross_cats":[],"headline":"","license":"http://creativecommons.org/publicdomain/zero/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2023-07-13T18:00:00Z","title":"An Extreme Black Hole in the Recurrent X-ray Transient XTE J2012+381"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2307.06988","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:f365ebea8200cf9cd3754e3d43c3faeb18a60a5518c47865db41e2a6699b2773","target":"record","created_at":"2026-07-05T06:30:48Z","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":"8bd372a206c28b03b697197289465b320743fed331c5e358f68188f8db02024f","cross_cats_sorted":[],"license":"http://creativecommons.org/publicdomain/zero/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2023-07-13T18:00:00Z","title_canon_sha256":"36430ccddd6af3e228000274b6fed54bdc63c0c69c4d1975bbd26fde83e40c37"},"schema_version":"1.0","source":{"id":"2307.06988","kind":"arxiv","version":1}},"canonical_sha256":"5cbaf4e5a97d1ede0a634bd7fd9e0760ce8f2f5c7e7dd862d00d6b2053b02ba4","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"5cbaf4e5a97d1ede0a634bd7fd9e0760ce8f2f5c7e7dd862d00d6b2053b02ba4","first_computed_at":"2026-07-05T06:30:48.747621Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T06:30:48.747621Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"qDnJI7w8IPRC1te1chv9Z1ty4y482AcOf8FWSvotaGVkN3A5V9aOsVVJPauh8EtaS5xMFNw3DNcytMDVDbcMAw==","signature_status":"signed_v1","signed_at":"2026-07-05T06:30:48.748193Z","signed_message":"canonical_sha256_bytes"},"source_id":"2307.06988","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:f365ebea8200cf9cd3754e3d43c3faeb18a60a5518c47865db41e2a6699b2773","sha256:7230e6df3e96ba7fe213a37e94ebe5e2f2c00e468680fdbce9b5cb5a1514c9d5"],"state_sha256":"f06df3593a39147dc91f1d156f9091c5fb89a37513629999359622079acd4490"}