{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2016:HLNL7FUTJTJWNYIPX3JFCJOQ3U","short_pith_number":"pith:HLNL7FUT","canonical_record":{"source":{"id":"1607.06533","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2016-07-22T01:09:32Z","cross_cats_sorted":[],"title_canon_sha256":"e7097fe1f22e9cbdb7eb5bed85ac346dddcdf2e9e4fb28b2d620b5c619134bce","abstract_canon_sha256":"7a8ef479e0ee30c82bcec2042f86141574d024740a1b8b1ccca3eddbf845d961"},"schema_version":"1.0"},"canonical_sha256":"3adabf96934cd366e10fbed25125d0dd33a46652c4967096eebd8048e3009d6a","source":{"kind":"arxiv","id":"1607.06533","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1607.06533","created_at":"2026-05-18T01:09:12Z"},{"alias_kind":"arxiv_version","alias_value":"1607.06533v2","created_at":"2026-05-18T01:09:12Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1607.06533","created_at":"2026-05-18T01:09:12Z"},{"alias_kind":"pith_short_12","alias_value":"HLNL7FUTJTJW","created_at":"2026-05-18T12:30:19Z"},{"alias_kind":"pith_short_16","alias_value":"HLNL7FUTJTJWNYIP","created_at":"2026-05-18T12:30:19Z"},{"alias_kind":"pith_short_8","alias_value":"HLNL7FUT","created_at":"2026-05-18T12:30:19Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2016:HLNL7FUTJTJWNYIPX3JFCJOQ3U","target":"record","payload":{"canonical_record":{"source":{"id":"1607.06533","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2016-07-22T01:09:32Z","cross_cats_sorted":[],"title_canon_sha256":"e7097fe1f22e9cbdb7eb5bed85ac346dddcdf2e9e4fb28b2d620b5c619134bce","abstract_canon_sha256":"7a8ef479e0ee30c82bcec2042f86141574d024740a1b8b1ccca3eddbf845d961"},"schema_version":"1.0"},"canonical_sha256":"3adabf96934cd366e10fbed25125d0dd33a46652c4967096eebd8048e3009d6a","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:09:12.506657Z","signature_b64":"EzY8S5VMv+NtGylRrQFvAJswBVzoNzyDynFz3MT7Lac7SgE+DIspYJbVdQeZbqqh4oZgksuLy3VVTe81Ho4LDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"3adabf96934cd366e10fbed25125d0dd33a46652c4967096eebd8048e3009d6a","last_reissued_at":"2026-05-18T01:09:12.506143Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:09:12.506143Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1607.06533","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":"2026-05-18T01:09:12Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"K1F1SZVJU7j3phQfxX1ee5Pp+HaiGb+qzvvxwckknmnZad9N7M7If3uGCzUGaCh73njWkcJsiGew5B1+VBhKAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T07:31:38.121192Z"},"content_sha256":"a85042de83639acad89b594227d7d8773b20129d4d5ef33ad47ecf29ced25700","schema_version":"1.0","event_id":"sha256:a85042de83639acad89b594227d7d8773b20129d4d5ef33ad47ecf29ced25700"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2016:HLNL7FUTJTJWNYIPX3JFCJOQ3U","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"VLBI observations of a flared optical quasar CGRaBS J0809+5341","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"Krisztina E. Gabanyi, Leonid I. Gurvits, Sandor Frey, Tao An, Yu-Zhu Cui, Zsolt Paragi","submitted_at":"2016-07-22T01:09:32Z","abstract_excerpt":"A bright optical flare was detected in the high-redshift ($z=2.133$) quasar CGRaBS J0809+5341 on 2014 April 13. The absolute magnitude of the object reached $-30.0$ during the flare, making it the brightest one (in flaring stage) among all known quasars so far. The 15 GHz flux density of CGRaBS J0809+5341 monitored in the period from 2008 to 2016 also reached its peak at the same time. To reveal any structural change possibly associated with the flare in the innermost radio structure of the quasar, we conducted a pilot very long baseline interferometry (VLBI) observation of CGRaBS J0809+5341 u"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1607.06533","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":""},"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":"2026-05-18T01:09:12Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"oZMTgCYVUbx7OLaV3EsRVn1qlfVVk5LKmRmGKmg3tcTKjEaVia+zutu2O+UnHnvmO9B9caV8ZMfQ3dkglzYJDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T07:31:38.121553Z"},"content_sha256":"91a1340bb17546b01eaa871e3903fd8dadbbe4e383aa2fe9d6d04b28fa082e6f","schema_version":"1.0","event_id":"sha256:91a1340bb17546b01eaa871e3903fd8dadbbe4e383aa2fe9d6d04b28fa082e6f"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/HLNL7FUTJTJWNYIPX3JFCJOQ3U/bundle.json","state_url":"https://pith.science/pith/HLNL7FUTJTJWNYIPX3JFCJOQ3U/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/HLNL7FUTJTJWNYIPX3JFCJOQ3U/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":"2026-06-03T07:31:38Z","links":{"resolver":"https://pith.science/pith/HLNL7FUTJTJWNYIPX3JFCJOQ3U","bundle":"https://pith.science/pith/HLNL7FUTJTJWNYIPX3JFCJOQ3U/bundle.json","state":"https://pith.science/pith/HLNL7FUTJTJWNYIPX3JFCJOQ3U/state.json","well_known_bundle":"https://pith.science/.well-known/pith/HLNL7FUTJTJWNYIPX3JFCJOQ3U/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:HLNL7FUTJTJWNYIPX3JFCJOQ3U","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":"7a8ef479e0ee30c82bcec2042f86141574d024740a1b8b1ccca3eddbf845d961","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2016-07-22T01:09:32Z","title_canon_sha256":"e7097fe1f22e9cbdb7eb5bed85ac346dddcdf2e9e4fb28b2d620b5c619134bce"},"schema_version":"1.0","source":{"id":"1607.06533","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1607.06533","created_at":"2026-05-18T01:09:12Z"},{"alias_kind":"arxiv_version","alias_value":"1607.06533v2","created_at":"2026-05-18T01:09:12Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1607.06533","created_at":"2026-05-18T01:09:12Z"},{"alias_kind":"pith_short_12","alias_value":"HLNL7FUTJTJW","created_at":"2026-05-18T12:30:19Z"},{"alias_kind":"pith_short_16","alias_value":"HLNL7FUTJTJWNYIP","created_at":"2026-05-18T12:30:19Z"},{"alias_kind":"pith_short_8","alias_value":"HLNL7FUT","created_at":"2026-05-18T12:30:19Z"}],"graph_snapshots":[{"event_id":"sha256:91a1340bb17546b01eaa871e3903fd8dadbbe4e383aa2fe9d6d04b28fa082e6f","target":"graph","created_at":"2026-05-18T01:09:12Z","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":"A bright optical flare was detected in the high-redshift ($z=2.133$) quasar CGRaBS J0809+5341 on 2014 April 13. The absolute magnitude of the object reached $-30.0$ during the flare, making it the brightest one (in flaring stage) among all known quasars so far. The 15 GHz flux density of CGRaBS J0809+5341 monitored in the period from 2008 to 2016 also reached its peak at the same time. To reveal any structural change possibly associated with the flare in the innermost radio structure of the quasar, we conducted a pilot very long baseline interferometry (VLBI) observation of CGRaBS J0809+5341 u","authors_text":"Krisztina E. Gabanyi, Leonid I. Gurvits, Sandor Frey, Tao An, Yu-Zhu Cui, Zsolt Paragi","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2016-07-22T01:09:32Z","title":"VLBI observations of a flared optical quasar CGRaBS J0809+5341"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1607.06533","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:a85042de83639acad89b594227d7d8773b20129d4d5ef33ad47ecf29ced25700","target":"record","created_at":"2026-05-18T01:09:12Z","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":"7a8ef479e0ee30c82bcec2042f86141574d024740a1b8b1ccca3eddbf845d961","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2016-07-22T01:09:32Z","title_canon_sha256":"e7097fe1f22e9cbdb7eb5bed85ac346dddcdf2e9e4fb28b2d620b5c619134bce"},"schema_version":"1.0","source":{"id":"1607.06533","kind":"arxiv","version":2}},"canonical_sha256":"3adabf96934cd366e10fbed25125d0dd33a46652c4967096eebd8048e3009d6a","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"3adabf96934cd366e10fbed25125d0dd33a46652c4967096eebd8048e3009d6a","first_computed_at":"2026-05-18T01:09:12.506143Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:09:12.506143Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"EzY8S5VMv+NtGylRrQFvAJswBVzoNzyDynFz3MT7Lac7SgE+DIspYJbVdQeZbqqh4oZgksuLy3VVTe81Ho4LDA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:09:12.506657Z","signed_message":"canonical_sha256_bytes"},"source_id":"1607.06533","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:a85042de83639acad89b594227d7d8773b20129d4d5ef33ad47ecf29ced25700","sha256:91a1340bb17546b01eaa871e3903fd8dadbbe4e383aa2fe9d6d04b28fa082e6f"],"state_sha256":"54af5628e3f5a0f87a3f427f7aa4d68ffdebd0af037f53582cc92da10e586ff3"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"EkbokReo3WUm5qxNNWKGndCSIsbdNJDRXnsr0qLSl6WmbB9wM/NBP5L3F7punJJJyIf5HBql4J2nPzDJ9kznCQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-03T07:31:38.123780Z","bundle_sha256":"a87ee7c5a3d97b181e5e0330165492eba24c783ac8f9502dc438db19a643897f"}}