{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:ZQ3UD6OVEUI3IE5NZYS7FFNRGM","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":"e228ee4025eec692b3622b41242dbae3ab1ef313c8756b933a7cfa67fb16fb6a","cross_cats_sorted":["astro-ph.HE"],"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"astro-ph.GA","submitted_at":"2026-07-10T01:57:15Z","title_canon_sha256":"074c940638b76cabc3fc7422ef047bdb7ee655f50008780d1f5675cfd1aa1121"},"schema_version":"1.0","source":{"id":"2607.09036","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2607.09036","created_at":"2026-07-13T00:17:36Z"},{"alias_kind":"arxiv_version","alias_value":"2607.09036v1","created_at":"2026-07-13T00:17:36Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2607.09036","created_at":"2026-07-13T00:17:36Z"},{"alias_kind":"pith_short_12","alias_value":"ZQ3UD6OVEUI3","created_at":"2026-07-13T00:17:36Z"},{"alias_kind":"pith_short_16","alias_value":"ZQ3UD6OVEUI3IE5N","created_at":"2026-07-13T00:17:36Z"},{"alias_kind":"pith_short_8","alias_value":"ZQ3UD6OV","created_at":"2026-07-13T00:17:36Z"}],"graph_snapshots":[{"event_id":"sha256:07bac5f33e655880077c1d17a0281574eefa4c693fed9fc8d01fd2713b90850f","target":"graph","created_at":"2026-07-13T00:17:36Z","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/2607.09036/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We report the discovery and multiwavelength follow-up observations of a giant (factor >100) X-ray outburst of the exceptional changing-look active galactic nucleus (AGN) IC 3599. This is the third such outburst after two previous ones serendipitously discovered in 1990 and 2010. Based on our dedicated long-term monitoring of IC 3599 with {\\it Swift}, the third outburst was detected while it was happening, and we triggered multiple follow-up observations within days to weeks for the first time. The Swift outburst spectra are supersoft and almost no photons are detected beyond 2.5 keV. The XMM-N","authors_text":"A.V. Dodin, A.V. Filippenko, C. Tapper, D. Grupe, E. Elien, J. Wang, N. Schartel, P. Lynam, S. Komossa, S. Wolsing, T.G. Brink, V. Oknyansky, W. Zheng","cross_cats":["astro-ph.HE"],"headline":"","license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"astro-ph.GA","submitted_at":"2026-07-10T01:57:15Z","title":"In the Eye of the Storm: The Third Giant X-ray Outburst of the Extreme Changing-look AGN IC 3599"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2607.09036","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:d7140d0f00effbce322c0b09f9a6c83e1c828e51efa700d33a96d274236e6309","target":"record","created_at":"2026-07-13T00:17:36Z","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":"e228ee4025eec692b3622b41242dbae3ab1ef313c8756b933a7cfa67fb16fb6a","cross_cats_sorted":["astro-ph.HE"],"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"astro-ph.GA","submitted_at":"2026-07-10T01:57:15Z","title_canon_sha256":"074c940638b76cabc3fc7422ef047bdb7ee655f50008780d1f5675cfd1aa1121"},"schema_version":"1.0","source":{"id":"2607.09036","kind":"arxiv","version":1}},"canonical_sha256":"cc3741f9d52511b413adce25f295b13328dbfbee22f58fe5b53087d6ad05a5f9","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"cc3741f9d52511b413adce25f295b13328dbfbee22f58fe5b53087d6ad05a5f9","first_computed_at":"2026-07-13T00:17:36.236373Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-13T00:17:36.236373Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"A8f0CxPpabdgAI3wQLNiCjzDWjKglAFkw39xQAg2ldnEiguNygm3eKXY6WOeUBzAB2QHs+3nOs0B3VGdFWR5Aw==","signature_status":"signed_v1","signed_at":"2026-07-13T00:17:36.237882Z","signed_message":"canonical_sha256_bytes"},"source_id":"2607.09036","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:d7140d0f00effbce322c0b09f9a6c83e1c828e51efa700d33a96d274236e6309","sha256:07bac5f33e655880077c1d17a0281574eefa4c693fed9fc8d01fd2713b90850f"],"state_sha256":"2f0e13ff04bfe786192b518acc85411ee3afccae8fc42a5164323a01c3decc6e"}