{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:3ZX4ULOZZDLYAWWSJZKM5UL36R","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":"5abfa3cf3201ee51f8879a4d576b1a6eb9a140cb9659b0817182edb8a3315d99","cross_cats_sorted":["astro-ph.GA"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2019-07-13T01:55:38Z","title_canon_sha256":"de3a475ad418ceb0f679fcfd0003a32932d9a4d1325edb7c4d71dbefa988d02b"},"schema_version":"1.0","source":{"id":"1907.05998","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1907.05998","created_at":"2026-07-04T23:58:52Z"},{"alias_kind":"arxiv_version","alias_value":"1907.05998v1","created_at":"2026-07-04T23:58:52Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1907.05998","created_at":"2026-07-04T23:58:52Z"},{"alias_kind":"pith_short_12","alias_value":"3ZX4ULOZZDLY","created_at":"2026-07-04T23:58:52Z"},{"alias_kind":"pith_short_16","alias_value":"3ZX4ULOZZDLYAWWS","created_at":"2026-07-04T23:58:52Z"},{"alias_kind":"pith_short_8","alias_value":"3ZX4ULOZ","created_at":"2026-07-04T23:58:52Z"}],"graph_snapshots":[{"event_id":"sha256:894f664bc5872d15fca78123b22ae3f9b51e0268b754b8e41edf6b180a53d3f4","target":"graph","created_at":"2026-07-04T23:58:52Z","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/1907.05998/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"CK Vul or Nova 1670 is an enigmatic eruptive object which underwent a stellar-merger event recorded by seventeenth-century observers. Its remnant was recently recovered at submillimeter wavelengths, revealing gas of an extraordinary isotopic composition indicative of past processing in the CNO cycles and partial He burning. Here, we present long-slit optical spectra of the remnant acquired with X-shooter at the Very Large Telescope at an unprecedented sensitivity and spectral coverage. The spectra cover features of key elements - including H, He, C, N, and O - at ionization degrees I-III. A cl","authors_text":"A. Mehner, R. Tylenda, T. Kami\\'nski","cross_cats":["astro-ph.GA"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2019-07-13T01:55:38Z","title":"Elemental abundances in the remnant of the ancient eruption of CK Vulpeculae"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1907.05998","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":"sha256:7b56c9e40cc52082cd575ee94cf2634ad6698ce5907f41bf7daf1b81361eeded","target":"record","created_at":"2026-07-04T23:58:52Z","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":"5abfa3cf3201ee51f8879a4d576b1a6eb9a140cb9659b0817182edb8a3315d99","cross_cats_sorted":["astro-ph.GA"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2019-07-13T01:55:38Z","title_canon_sha256":"de3a475ad418ceb0f679fcfd0003a32932d9a4d1325edb7c4d71dbefa988d02b"},"schema_version":"1.0","source":{"id":"1907.05998","kind":"arxiv","version":1}},"canonical_sha256":"de6fca2dd9c8d7805ad24e54ced17bf46f5880d51c0be535af604e847bb64dea","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"de6fca2dd9c8d7805ad24e54ced17bf46f5880d51c0be535af604e847bb64dea","first_computed_at":"2026-07-04T23:58:52.734611Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T23:58:52.734611Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"aNSCMjAWdhI35SPeRjbr+9wAgTKV7OLi9vqcDvatLNheRGOKenZqZnPHAXWCWWcsy9CL6EqXfTnoa1VnS7arCA==","signature_status":"signed_v1","signed_at":"2026-07-04T23:58:52.735081Z","signed_message":"canonical_sha256_bytes"},"source_id":"1907.05998","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:7b56c9e40cc52082cd575ee94cf2634ad6698ce5907f41bf7daf1b81361eeded","sha256:894f664bc5872d15fca78123b22ae3f9b51e0268b754b8e41edf6b180a53d3f4"],"state_sha256":"5809f84cfb9746911d4c9046aa062cd0371e47a2c2fd0f7dd7d2a800c78f8c1e"}