{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2023:SZKZZ2GYH76MN5GNPWSBZXEW3J","short_pith_number":"pith:SZKZZ2GY","canonical_record":{"source":{"id":"2310.20408","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.HE","submitted_at":"2023-10-31T12:31:55Z","cross_cats_sorted":["astro-ph.CO","astro-ph.SR"],"title_canon_sha256":"f135830d0a554c881268e77c908231e74c05cb9e405d3345b92c8c68ee420755","abstract_canon_sha256":"68359f3c0a62c9e23629d18ac10ef1fc8efc561ee03b8982de8382cfe82e12d0"},"schema_version":"1.0"},"canonical_sha256":"96559ce8d83ffcc6f4cd7da41cdc96da4b29e5dbfce05a518fb8921da1c5a6a5","source":{"kind":"arxiv","id":"2310.20408","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2310.20408","created_at":"2026-07-05T08:11:55Z"},{"alias_kind":"arxiv_version","alias_value":"2310.20408v2","created_at":"2026-07-05T08:11:55Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2310.20408","created_at":"2026-07-05T08:11:55Z"},{"alias_kind":"pith_short_12","alias_value":"SZKZZ2GYH76M","created_at":"2026-07-05T08:11:55Z"},{"alias_kind":"pith_short_16","alias_value":"SZKZZ2GYH76MN5GN","created_at":"2026-07-05T08:11:55Z"},{"alias_kind":"pith_short_8","alias_value":"SZKZZ2GY","created_at":"2026-07-05T08:11:55Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2023:SZKZZ2GYH76MN5GNPWSBZXEW3J","target":"record","payload":{"canonical_record":{"source":{"id":"2310.20408","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.HE","submitted_at":"2023-10-31T12:31:55Z","cross_cats_sorted":["astro-ph.CO","astro-ph.SR"],"title_canon_sha256":"f135830d0a554c881268e77c908231e74c05cb9e405d3345b92c8c68ee420755","abstract_canon_sha256":"68359f3c0a62c9e23629d18ac10ef1fc8efc561ee03b8982de8382cfe82e12d0"},"schema_version":"1.0"},"canonical_sha256":"96559ce8d83ffcc6f4cd7da41cdc96da4b29e5dbfce05a518fb8921da1c5a6a5","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T08:11:55.219454Z","signature_b64":"R5KSVNWSTJ5J3wxIbrkHgxhk9YVz6yyky1sy5QAI41D0BNT7Vnrzohw2OUCHD0Zu2sUvgqfDt5VJSXzyJfaCCw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"96559ce8d83ffcc6f4cd7da41cdc96da4b29e5dbfce05a518fb8921da1c5a6a5","last_reissued_at":"2026-07-05T08:11:55.218902Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T08:11:55.218902Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2310.20408","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T08:11:55Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"iv3LxL4l1BBzi8EcP2qkS+Nm9aHXtlO0mLjCSSW1THileCxLmL3q3+yhM5qYAU3wdoqlT2ban2AOjcacMYDiDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-04T01:23:08.072093Z"},"content_sha256":"f40938ab370253606601d71d0b82c7a21c8071c2278713f23ed4d596ab29b067","schema_version":"1.0","event_id":"sha256:f40938ab370253606601d71d0b82c7a21c8071c2278713f23ed4d596ab29b067"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2023:SZKZZ2GYH76MN5GNPWSBZXEW3J","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Time-varying double-peaked emission lines following the sudden ignition of the dormant galactic nucleus AT2017bcc","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["astro-ph.CO","astro-ph.SR"],"primary_cat":"astro-ph.HE","authors_text":"A. Aamer, A. Lawrence, C. A. Ward, C. Inserra, C. P. Guti\\'errez, D. R. Young, E. A. Magnier, E. Berger, E. J. Ridley, G. Leloudas, G. Pratten, H. Gao, J. C. Runnoe, J. P. Anderson, K. C. Chambers, K. D. Alexander, K. V. Sokolovsky, K. W. Smith, L. Makrygianni, L. Wyrzykowski, M. Fraser, M. Gromadzki, M. Nicholl, P. K. Blanchard, P. Schmidt, R. Chornock, R. Wainscoat, S. Benetti, S. Gomez, S. J. Smartt, S. Mattila, S. R. Oates, T. de Boer, T. E. M\\\"uller-Bravo, T. Kangas, T. Moore, T. M. Reynolds, T.-W. Chen","submitted_at":"2023-10-31T12:31:55Z","abstract_excerpt":"We present a pan-chromatic study of AT2017bcc, a nuclear transient that was discovered in 2017 within the skymap of a reported burst-like gravitational wave candidate, G274296. It was initially classified as a superluminous supernova, and then reclassified as a candidate tidal disruption event. Its optical light curve has since shown ongoing variability with a structure function consistent with that of an active galactic nucleus, however earlier data shows no variability for at least 10 years prior to the outburst in 2017. The spectrum shows complex profiles in the broad Balmer lines: a centra"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2310.20408","kind":"arxiv","version":2},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2310.20408/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T08:11:55Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"AQcTtCVHcDYrYs2zZbaf4swd9ZzD1EASGw6peV32+snvtImYuJ/YOt/PBJG71NRkhJV8k/dorMkd4xWf2+ERCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-04T01:23:08.072997Z"},"content_sha256":"cf947f6e9c358f3053f88ec83e6a09709f7ebf7b0c44b1f0c99cd7f2c24bafed","schema_version":"1.0","event_id":"sha256:cf947f6e9c358f3053f88ec83e6a09709f7ebf7b0c44b1f0c99cd7f2c24bafed"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/SZKZZ2GYH76MN5GNPWSBZXEW3J/bundle.json","state_url":"https://pith.science/pith/SZKZZ2GYH76MN5GNPWSBZXEW3J/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/SZKZZ2GYH76MN5GNPWSBZXEW3J/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-08-04T01:23:08Z","links":{"resolver":"https://pith.science/pith/SZKZZ2GYH76MN5GNPWSBZXEW3J","bundle":"https://pith.science/pith/SZKZZ2GYH76MN5GNPWSBZXEW3J/bundle.json","state":"https://pith.science/pith/SZKZZ2GYH76MN5GNPWSBZXEW3J/state.json","well_known_bundle":"https://pith.science/.well-known/pith/SZKZZ2GYH76MN5GNPWSBZXEW3J/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2023:SZKZZ2GYH76MN5GNPWSBZXEW3J","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":"68359f3c0a62c9e23629d18ac10ef1fc8efc561ee03b8982de8382cfe82e12d0","cross_cats_sorted":["astro-ph.CO","astro-ph.SR"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.HE","submitted_at":"2023-10-31T12:31:55Z","title_canon_sha256":"f135830d0a554c881268e77c908231e74c05cb9e405d3345b92c8c68ee420755"},"schema_version":"1.0","source":{"id":"2310.20408","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2310.20408","created_at":"2026-07-05T08:11:55Z"},{"alias_kind":"arxiv_version","alias_value":"2310.20408v2","created_at":"2026-07-05T08:11:55Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2310.20408","created_at":"2026-07-05T08:11:55Z"},{"alias_kind":"pith_short_12","alias_value":"SZKZZ2GYH76M","created_at":"2026-07-05T08:11:55Z"},{"alias_kind":"pith_short_16","alias_value":"SZKZZ2GYH76MN5GN","created_at":"2026-07-05T08:11:55Z"},{"alias_kind":"pith_short_8","alias_value":"SZKZZ2GY","created_at":"2026-07-05T08:11:55Z"}],"graph_snapshots":[{"event_id":"sha256:cf947f6e9c358f3053f88ec83e6a09709f7ebf7b0c44b1f0c99cd7f2c24bafed","target":"graph","created_at":"2026-07-05T08:11:55Z","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/2310.20408/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We present a pan-chromatic study of AT2017bcc, a nuclear transient that was discovered in 2017 within the skymap of a reported burst-like gravitational wave candidate, G274296. It was initially classified as a superluminous supernova, and then reclassified as a candidate tidal disruption event. Its optical light curve has since shown ongoing variability with a structure function consistent with that of an active galactic nucleus, however earlier data shows no variability for at least 10 years prior to the outburst in 2017. The spectrum shows complex profiles in the broad Balmer lines: a centra","authors_text":"A. Aamer, A. Lawrence, C. A. Ward, C. Inserra, C. P. Guti\\'errez, D. R. Young, E. A. Magnier, E. Berger, E. J. Ridley, G. Leloudas, G. Pratten, H. Gao, J. C. Runnoe, J. P. Anderson, K. C. Chambers, K. D. Alexander, K. V. Sokolovsky, K. W. Smith, L. Makrygianni, L. Wyrzykowski, M. Fraser, M. Gromadzki, M. Nicholl, P. K. Blanchard, P. Schmidt, R. Chornock, R. Wainscoat, S. Benetti, S. Gomez, S. J. Smartt, S. Mattila, S. R. Oates, T. de Boer, T. E. M\\\"uller-Bravo, T. Kangas, T. Moore, T. M. Reynolds, T.-W. Chen","cross_cats":["astro-ph.CO","astro-ph.SR"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.HE","submitted_at":"2023-10-31T12:31:55Z","title":"Time-varying double-peaked emission lines following the sudden ignition of the dormant galactic nucleus AT2017bcc"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2310.20408","kind":"arxiv","version":2},"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:f40938ab370253606601d71d0b82c7a21c8071c2278713f23ed4d596ab29b067","target":"record","created_at":"2026-07-05T08:11:55Z","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":"68359f3c0a62c9e23629d18ac10ef1fc8efc561ee03b8982de8382cfe82e12d0","cross_cats_sorted":["astro-ph.CO","astro-ph.SR"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.HE","submitted_at":"2023-10-31T12:31:55Z","title_canon_sha256":"f135830d0a554c881268e77c908231e74c05cb9e405d3345b92c8c68ee420755"},"schema_version":"1.0","source":{"id":"2310.20408","kind":"arxiv","version":2}},"canonical_sha256":"96559ce8d83ffcc6f4cd7da41cdc96da4b29e5dbfce05a518fb8921da1c5a6a5","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"96559ce8d83ffcc6f4cd7da41cdc96da4b29e5dbfce05a518fb8921da1c5a6a5","first_computed_at":"2026-07-05T08:11:55.218902Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T08:11:55.218902Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"R5KSVNWSTJ5J3wxIbrkHgxhk9YVz6yyky1sy5QAI41D0BNT7Vnrzohw2OUCHD0Zu2sUvgqfDt5VJSXzyJfaCCw==","signature_status":"signed_v1","signed_at":"2026-07-05T08:11:55.219454Z","signed_message":"canonical_sha256_bytes"},"source_id":"2310.20408","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:f40938ab370253606601d71d0b82c7a21c8071c2278713f23ed4d596ab29b067","sha256:cf947f6e9c358f3053f88ec83e6a09709f7ebf7b0c44b1f0c99cd7f2c24bafed"],"state_sha256":"848eedbcf42494fed45135f5bfffa47282dc38f39547d70d901a97a4459df85f"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"O4++TuBJ081essqw+mDFDyBdEAu6+1r5BokSTVImMkm6V4Vwsp5fII3VOIvdv9WyywrBOOiEA9KFC1j6yzvQBQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-04T01:23:08.084379Z","bundle_sha256":"37f57cb007f54975b95b1ecd12fdebe75a139c7990ac741c136779e5ffe48fa2"}}