{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:MQ3TNTITAHRPEJCZNO74YCF3GW","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":"2137fe0eabfdca3aec754b413e44dc91085efbefb9ade7152cd320c2dbdc5cd1","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2017-05-30T21:35:15Z","title_canon_sha256":"f4b2bc4e217c49c7101a94c96e437df5f2e7bcfb2a8f28f412c1341ca8a5899a"},"schema_version":"1.0","source":{"id":"1705.10875","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1705.10875","created_at":"2026-05-18T00:39:34Z"},{"alias_kind":"arxiv_version","alias_value":"1705.10875v1","created_at":"2026-05-18T00:39:34Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1705.10875","created_at":"2026-05-18T00:39:34Z"},{"alias_kind":"pith_short_12","alias_value":"MQ3TNTITAHRP","created_at":"2026-05-18T12:31:31Z"},{"alias_kind":"pith_short_16","alias_value":"MQ3TNTITAHRPEJCZ","created_at":"2026-05-18T12:31:31Z"},{"alias_kind":"pith_short_8","alias_value":"MQ3TNTIT","created_at":"2026-05-18T12:31:31Z"}],"graph_snapshots":[{"event_id":"sha256:027d78224d5ff79e145879fa8ef604f3df526d6880d8a42d594423e438525f18","target":"graph","created_at":"2026-05-18T00:39:34Z","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":"We obtained an optical spectrum of a star we identify as the optical counterpart of the M31 Chandra source CXO J004318.8+412016, because of prominent emission lines of the Balmer series, of neutral helium, and a He II line at 4686 Angstrom. The continuum energy distribution and the spectral characteristics demonstrate the presence of a red giant of K or earlier spectral type, so we concluded that the binary is likely to be a symbiotic system. CXO J004318.8+412016 has been observed in X-rays as a luminous supersoft source (SSS) since 1979, with effective temperature exceeding 40 eV and variable","authors_text":"A. Bianchini, A. Kaur, A. Odendaal, D. de Martino, D. Harbeck, E. Chiosi, G.J.M. Luna, G. Trinchieri, J. Mikolajewska, J.S. Gallagher, L. Zampieri, M. Della Valle, M. Mapelli, M. Orio, P. Zemko, R. Kotulla, U. Munari","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2017-05-30T21:35:15Z","title":"CXO J004318.8+412016, a steady supersoft X-ray source in M 31"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1705.10875","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:a9d0937395fd7eb8eceae802e427df58eda8ec52d8a0fdeaed916ab5dd0da237","target":"record","created_at":"2026-05-18T00:39:34Z","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":"2137fe0eabfdca3aec754b413e44dc91085efbefb9ade7152cd320c2dbdc5cd1","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2017-05-30T21:35:15Z","title_canon_sha256":"f4b2bc4e217c49c7101a94c96e437df5f2e7bcfb2a8f28f412c1341ca8a5899a"},"schema_version":"1.0","source":{"id":"1705.10875","kind":"arxiv","version":1}},"canonical_sha256":"643736cd1301e2f224596bbfcc08bb3596fe09e5c04a51c50e06b111c3470f16","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"643736cd1301e2f224596bbfcc08bb3596fe09e5c04a51c50e06b111c3470f16","first_computed_at":"2026-05-18T00:39:34.506509Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:39:34.506509Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"kTa7hVOkgSFXlSr6sOYMgiz2c65eNtjxWiReeVqEXj7SIh824DJo3b/+bRhkebsfUYWmbqqJ1QOd3IfdfMb6Ag==","signature_status":"signed_v1","signed_at":"2026-05-18T00:39:34.507338Z","signed_message":"canonical_sha256_bytes"},"source_id":"1705.10875","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:a9d0937395fd7eb8eceae802e427df58eda8ec52d8a0fdeaed916ab5dd0da237","sha256:027d78224d5ff79e145879fa8ef604f3df526d6880d8a42d594423e438525f18"],"state_sha256":"f03b89abe42a513df4151a12749dff4891c85d9bd0f82d7640bd452e1a9831b4"}