{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2016:44SKEOORAZNEFXIOO4TNDFYQF4","short_pith_number":"pith:44SKEOOR","canonical_record":{"source":{"id":"1603.04461","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2016-03-14T20:35:23Z","cross_cats_sorted":[],"title_canon_sha256":"5f2b00f2b09bac6d68306556753067d561349e36b2ff9aa67818731dc90763f1","abstract_canon_sha256":"e38ee0f0c3b25ad434d018a3f78a57cf1e3dda09893e2feab0e986dfc7c4de3f"},"schema_version":"1.0"},"canonical_sha256":"e724a239d1065a42dd0e7726d197102f302498ed62452706bbb7e1b29753304e","source":{"kind":"arxiv","id":"1603.04461","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1603.04461","created_at":"2026-05-18T01:18:35Z"},{"alias_kind":"arxiv_version","alias_value":"1603.04461v1","created_at":"2026-05-18T01:18:35Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1603.04461","created_at":"2026-05-18T01:18:35Z"},{"alias_kind":"pith_short_12","alias_value":"44SKEOORAZNE","created_at":"2026-05-18T12:29:58Z"},{"alias_kind":"pith_short_16","alias_value":"44SKEOORAZNEFXIO","created_at":"2026-05-18T12:29:58Z"},{"alias_kind":"pith_short_8","alias_value":"44SKEOOR","created_at":"2026-05-18T12:29:58Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2016:44SKEOORAZNEFXIOO4TNDFYQF4","target":"record","payload":{"canonical_record":{"source":{"id":"1603.04461","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2016-03-14T20:35:23Z","cross_cats_sorted":[],"title_canon_sha256":"5f2b00f2b09bac6d68306556753067d561349e36b2ff9aa67818731dc90763f1","abstract_canon_sha256":"e38ee0f0c3b25ad434d018a3f78a57cf1e3dda09893e2feab0e986dfc7c4de3f"},"schema_version":"1.0"},"canonical_sha256":"e724a239d1065a42dd0e7726d197102f302498ed62452706bbb7e1b29753304e","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:18:35.226158Z","signature_b64":"toz1mSSBOcSimdolPjpfEce3pQ0YZvxjGaE6KMKwB9P1EjEr6bBgh4+YY9IFRzIepuZX7WG9NKqoawW2hyOTBA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"e724a239d1065a42dd0e7726d197102f302498ed62452706bbb7e1b29753304e","last_reissued_at":"2026-05-18T01:18:35.225654Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:18:35.225654Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1603.04461","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T01:18:35Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Qui91xi22UffbV69TeMEN37lM36opMEoAZZpEjI+PxiHzIOfifL4r4sK7UTEOrg43bNBu+opItwUfEks+xBMBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T05:02:04.294084Z"},"content_sha256":"213934b75ea58b552fd009e77efbf3fb9cd26e7ce88bcce7bb1264ea93e2a9f0","schema_version":"1.0","event_id":"sha256:213934b75ea58b552fd009e77efbf3fb9cd26e7ce88bcce7bb1264ea93e2a9f0"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2016:44SKEOORAZNEFXIOO4TNDFYQF4","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Furiously Fast and Red: Sub-second Optical Flaring in V404 Cyg during the 2015 Outburst Peak","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"A.J. Castro-Tirado, A.W. Shaw, C. Knigge, D. Altamirano, D.J. Walton, D.M. Russell, D.M. Terndrup, E. Kuulkers, F. Rahoui, J. Casares, J. Tomsick, J.V. Hern\\'andez Santisteban, K. Mooley, L.K. Hardy, M.D. Caballero-Garcia, M. Pahari, P.A. Charles, P. Casella, P. Gandhi (Southampton), R.I. Hynes, R.P. Fender, S. Eikenberry, S.P. Littlefair, T. Mu\\~noz-Darias, T.R. Marsh (Warwick), T. Shahbaz, V.S. Dhillon (Sheffield), Y. Dallilar","submitted_at":"2016-03-14T20:35:23Z","abstract_excerpt":"We present observations of rapid (sub-second) optical flux variability in V404 Cyg during its 2015 June outburst. Simultaneous three-band observations with the ULTRACAM fast imager on four nights show steep power spectra dominated by slow variations on ~100-1000s timescales. Near the peak of the outburst on June 26, a dramatic change occurs and additional, persistent sub-second optical flaring appears close in time to giant radio and X-ray flaring. The flares reach peak optical luminosities of ~few x 10^{36} erg/s. Some are unresolved down to a time resolution of 24 milliseconds. Whereas the f"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1603.04461","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"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":"2026-05-18T01:18:35Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"JJfeegmudb/1/ctQddEy/oN8guK4YaD5JWCtQf7PhVEzKIVXG3qkwbaQ7QCmnQS9Kr5M2KgL6nROoHwQhvHrCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T05:02:04.294690Z"},"content_sha256":"0e0f3e99d7a924b31d2a7fb49331f64c6aefe5a20b53a8b895faff9485105fee","schema_version":"1.0","event_id":"sha256:0e0f3e99d7a924b31d2a7fb49331f64c6aefe5a20b53a8b895faff9485105fee"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/44SKEOORAZNEFXIOO4TNDFYQF4/bundle.json","state_url":"https://pith.science/pith/44SKEOORAZNEFXIOO4TNDFYQF4/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/44SKEOORAZNEFXIOO4TNDFYQF4/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":"2026-05-30T05:02:04Z","links":{"resolver":"https://pith.science/pith/44SKEOORAZNEFXIOO4TNDFYQF4","bundle":"https://pith.science/pith/44SKEOORAZNEFXIOO4TNDFYQF4/bundle.json","state":"https://pith.science/pith/44SKEOORAZNEFXIOO4TNDFYQF4/state.json","well_known_bundle":"https://pith.science/.well-known/pith/44SKEOORAZNEFXIOO4TNDFYQF4/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:44SKEOORAZNEFXIOO4TNDFYQF4","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":"e38ee0f0c3b25ad434d018a3f78a57cf1e3dda09893e2feab0e986dfc7c4de3f","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2016-03-14T20:35:23Z","title_canon_sha256":"5f2b00f2b09bac6d68306556753067d561349e36b2ff9aa67818731dc90763f1"},"schema_version":"1.0","source":{"id":"1603.04461","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1603.04461","created_at":"2026-05-18T01:18:35Z"},{"alias_kind":"arxiv_version","alias_value":"1603.04461v1","created_at":"2026-05-18T01:18:35Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1603.04461","created_at":"2026-05-18T01:18:35Z"},{"alias_kind":"pith_short_12","alias_value":"44SKEOORAZNE","created_at":"2026-05-18T12:29:58Z"},{"alias_kind":"pith_short_16","alias_value":"44SKEOORAZNEFXIO","created_at":"2026-05-18T12:29:58Z"},{"alias_kind":"pith_short_8","alias_value":"44SKEOOR","created_at":"2026-05-18T12:29:58Z"}],"graph_snapshots":[{"event_id":"sha256:0e0f3e99d7a924b31d2a7fb49331f64c6aefe5a20b53a8b895faff9485105fee","target":"graph","created_at":"2026-05-18T01:18:35Z","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 present observations of rapid (sub-second) optical flux variability in V404 Cyg during its 2015 June outburst. Simultaneous three-band observations with the ULTRACAM fast imager on four nights show steep power spectra dominated by slow variations on ~100-1000s timescales. Near the peak of the outburst on June 26, a dramatic change occurs and additional, persistent sub-second optical flaring appears close in time to giant radio and X-ray flaring. The flares reach peak optical luminosities of ~few x 10^{36} erg/s. Some are unresolved down to a time resolution of 24 milliseconds. Whereas the f","authors_text":"A.J. Castro-Tirado, A.W. Shaw, C. Knigge, D. Altamirano, D.J. Walton, D.M. Russell, D.M. Terndrup, E. Kuulkers, F. Rahoui, J. Casares, J. Tomsick, J.V. Hern\\'andez Santisteban, K. Mooley, L.K. Hardy, M.D. Caballero-Garcia, M. Pahari, P.A. Charles, P. Casella, P. Gandhi (Southampton), R.I. Hynes, R.P. Fender, S. Eikenberry, S.P. Littlefair, T. Mu\\~noz-Darias, T.R. Marsh (Warwick), T. Shahbaz, V.S. Dhillon (Sheffield), Y. Dallilar","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2016-03-14T20:35:23Z","title":"Furiously Fast and Red: Sub-second Optical Flaring in V404 Cyg during the 2015 Outburst Peak"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1603.04461","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":"sha256:213934b75ea58b552fd009e77efbf3fb9cd26e7ce88bcce7bb1264ea93e2a9f0","target":"record","created_at":"2026-05-18T01:18:35Z","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":"e38ee0f0c3b25ad434d018a3f78a57cf1e3dda09893e2feab0e986dfc7c4de3f","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2016-03-14T20:35:23Z","title_canon_sha256":"5f2b00f2b09bac6d68306556753067d561349e36b2ff9aa67818731dc90763f1"},"schema_version":"1.0","source":{"id":"1603.04461","kind":"arxiv","version":1}},"canonical_sha256":"e724a239d1065a42dd0e7726d197102f302498ed62452706bbb7e1b29753304e","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"e724a239d1065a42dd0e7726d197102f302498ed62452706bbb7e1b29753304e","first_computed_at":"2026-05-18T01:18:35.225654Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:18:35.225654Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"toz1mSSBOcSimdolPjpfEce3pQ0YZvxjGaE6KMKwB9P1EjEr6bBgh4+YY9IFRzIepuZX7WG9NKqoawW2hyOTBA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:18:35.226158Z","signed_message":"canonical_sha256_bytes"},"source_id":"1603.04461","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:213934b75ea58b552fd009e77efbf3fb9cd26e7ce88bcce7bb1264ea93e2a9f0","sha256:0e0f3e99d7a924b31d2a7fb49331f64c6aefe5a20b53a8b895faff9485105fee"],"state_sha256":"77d5db87916d5905117531d9a03b432791ecbed848b4c40071c4565ebb910c4a"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"IghHqZFUwxuqtYNpnL4z73UdlQzoRgPJFictF/qW3eJXNEV8SF/q7wu8ZPrKMUHY9jLiyTyEh0MSWoAYu3QKBg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-30T05:02:04.297945Z","bundle_sha256":"dca4f4accfb06732247d5f08ae7e3153aca85ddde9721a98540a422ec2e88289"}}