{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2001:KG2E5UD3F5VRGOH3DG3AX6GFTA","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":"52806fc23c8b635aca58a956f82090c25a4c88c8362a33adaaca6a141e7c532f","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2001-04-27T14:30:25Z","title_canon_sha256":"b74042dcc00c1fedc5819e425229b16e65cd20b3b79f3793df0fbea1377518eb"},"schema_version":"1.0","source":{"id":"astro-ph/0104447","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0104447","created_at":"2026-07-04T16:23:18Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0104447v1","created_at":"2026-07-04T16:23:18Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0104447","created_at":"2026-07-04T16:23:18Z"},{"alias_kind":"pith_short_12","alias_value":"KG2E5UD3F5VR","created_at":"2026-07-04T16:23:18Z"},{"alias_kind":"pith_short_16","alias_value":"KG2E5UD3F5VRGOH3","created_at":"2026-07-04T16:23:18Z"},{"alias_kind":"pith_short_8","alias_value":"KG2E5UD3","created_at":"2026-07-04T16:23:18Z"}],"graph_snapshots":[{"event_id":"sha256:e5c74317ec5d5e3f128d705e5da7b7797b2773af3f4a883947b69edcf3958aa3","target":"graph","created_at":"2026-07-04T16:23:18Z","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/astro-ph/0104447/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We report on the X-ray observation of the radio selected supernova SN1979C carried out with ASCA in 1997 December and serendipitously available from a Chandra Guaranteed Time Observation in 1999 November. The supernova, of type SN II-Linear (SN IIL), was first observed in the optical and occurred in the weakly barred, almost face on spiral galaxy NGC 4321 (M100). The galaxy, a member of the Virgo S cluster, is at a distance of 17.1 Mpc, and contains at least three other supernovae discovered in this century. The useful exposure time was ~25 ks for the Solid-State Imaging Spectrometer (SIS), ~2","authors_text":"A. Ray (TIFR, Bombay, Cambridge, E. M. Schlegel (Harvard-Smithsonian CfA, India), MA), MD), R. Petre (NASA-GSFC Greenbelt","cross_cats":[],"headline":"","license":"","primary_cat":"astro-ph","submitted_at":"2001-04-27T14:30:25Z","title":"Chandra and ASCA X-ray Observations of the Radio Supernova SN1979C IN NGC 4321"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0104447","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:a2e4c9dca6fc6d286b2fd5614905c39f4148b5d0ea4363c07cec5836ffd2f418","target":"record","created_at":"2026-07-04T16:23:18Z","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":"52806fc23c8b635aca58a956f82090c25a4c88c8362a33adaaca6a141e7c532f","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2001-04-27T14:30:25Z","title_canon_sha256":"b74042dcc00c1fedc5819e425229b16e65cd20b3b79f3793df0fbea1377518eb"},"schema_version":"1.0","source":{"id":"astro-ph/0104447","kind":"arxiv","version":1}},"canonical_sha256":"51b44ed07b2f6b1338fb19b60bf8c59814a113e9ffe145e49fd2e4156b84c96d","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"51b44ed07b2f6b1338fb19b60bf8c59814a113e9ffe145e49fd2e4156b84c96d","first_computed_at":"2026-07-04T16:23:18.203117Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T16:23:18.203117Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"fR4xEB0BLwHizMqzJttL4bhYC/X+Pd0lIU4x1G6hBjuGkzshjRiUeuRtDvhzfARmQR/4TeLNFfXjF7/1kZ7rBg==","signature_status":"signed_v1","signed_at":"2026-07-04T16:23:18.203598Z","signed_message":"canonical_sha256_bytes"},"source_id":"astro-ph/0104447","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:a2e4c9dca6fc6d286b2fd5614905c39f4148b5d0ea4363c07cec5836ffd2f418","sha256:e5c74317ec5d5e3f128d705e5da7b7797b2773af3f4a883947b69edcf3958aa3"],"state_sha256":"cd266acc48fba62d6f59e445c54f868335b4e4f1716462209aced7dd5fb6aa95"}