{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2007:OSWRQR2V3XIDQHWL4HK3Y6MMUB","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":"e255fd1f6674d6d1c37a81ba0826c73ed85ed3ce64117dd1e031e7410e408bbd","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2007-07-04T12:39:14Z","title_canon_sha256":"8b712ca9a8580c7645c0f8a21f1178bd31b425d412f5b530e1cc1937e4eaac99"},"schema_version":"1.0","source":{"id":"0707.0594","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0707.0594","created_at":"2026-07-05T01:58:05Z"},{"alias_kind":"arxiv_version","alias_value":"0707.0594v1","created_at":"2026-07-05T01:58:05Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0707.0594","created_at":"2026-07-05T01:58:05Z"},{"alias_kind":"pith_short_12","alias_value":"OSWRQR2V3XID","created_at":"2026-07-05T01:58:05Z"},{"alias_kind":"pith_short_16","alias_value":"OSWRQR2V3XIDQHWL","created_at":"2026-07-05T01:58:05Z"},{"alias_kind":"pith_short_8","alias_value":"OSWRQR2V","created_at":"2026-07-05T01:58:05Z"}],"graph_snapshots":[{"event_id":"sha256:1741e5f1f6222ec62e532cc5ca08a7b94d95266dc7a600139cc887c318ad9ae8","target":"graph","created_at":"2026-07-05T01:58:05Z","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/0707.0594/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We present extensive optical spectroscopy of the early-type magnetic star HD 191612 (O6.5f?pe-O8fp). The Balmer and HeI lines show strongly variable emission which is highly reproducible on a well-determined 538-d period. Metal lines and HeII absorptions (including many selective emission lines but excluding He II 4686A emission) are essentially constant in line strength, but are variable in velocity, establishing a double-lined binary orbit with P(orb) = 1542d, e=0.45. We conduct a model-atmosphere analysis of the primary, and find that the system is consistent with a O8: giant with a B1: mai","authors_text":"A. Herrero, Danny J. Lennon, D. Bohlender, D. Gies, D. Harmer, D. McDavid, G. Rauw, H. Bond, Ian D. Howarth, I. Antokhin, I. Kolka, I. Negueruela, J.-F. Donati, Joachim Puls, K. Annuk, L. Georgiev, Nolan R. Walborn, P. Reig, T. Morel, Yael Naze","cross_cats":[],"headline":"","license":"","primary_cat":"astro-ph","submitted_at":"2007-07-04T12:39:14Z","title":"Towards an understanding of the Of?p star HD 191612: optical spectroscopy"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0707.0594","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":"sha256:5e3337b6e10325e2591a0efd8ee38b17ee27d9576c88b6ec015bc0575b58d0b7","target":"record","created_at":"2026-07-05T01:58:05Z","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":"e255fd1f6674d6d1c37a81ba0826c73ed85ed3ce64117dd1e031e7410e408bbd","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2007-07-04T12:39:14Z","title_canon_sha256":"8b712ca9a8580c7645c0f8a21f1178bd31b425d412f5b530e1cc1937e4eaac99"},"schema_version":"1.0","source":{"id":"0707.0594","kind":"arxiv","version":1}},"canonical_sha256":"74ad184755ddd0381ecbe1d5bc798ca0670c634c5dfe1cffea06e781908aac28","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"74ad184755ddd0381ecbe1d5bc798ca0670c634c5dfe1cffea06e781908aac28","first_computed_at":"2026-07-05T01:58:05.905166Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T01:58:05.905166Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"/8OcBETKnBY0x4/XOQ0mLiRUQPfKqF21fKfVt+cgdgmeOrWumu0acYmM+NeYWcz1smWF1awpL94/HUcxc+P5DA==","signature_status":"signed_v1","signed_at":"2026-07-05T01:58:05.905623Z","signed_message":"canonical_sha256_bytes"},"source_id":"0707.0594","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:5e3337b6e10325e2591a0efd8ee38b17ee27d9576c88b6ec015bc0575b58d0b7","sha256:1741e5f1f6222ec62e532cc5ca08a7b94d95266dc7a600139cc887c318ad9ae8"],"state_sha256":"be0db8c4bc3993388950f1af25cb8b6ee6a6c0965a826e12b62e89c60a1fee2e"}