{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2011:H2S46QGF753KOJFEIHCEL7TBFY","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":"a5eec1fb83d6f64c45cad0b17166483e409d72d052d45f8a3fabf2bc2713f9ac","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/3.0/","primary_cat":"astro-ph.CO","submitted_at":"2011-08-04T08:34:24Z","title_canon_sha256":"2a924ca96e8530f767feaadd11951defd79fffd405206655f89043b61954fe74"},"schema_version":"1.0","source":{"id":"1108.1020","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1108.1020","created_at":"2026-05-18T02:01:03Z"},{"alias_kind":"arxiv_version","alias_value":"1108.1020v1","created_at":"2026-05-18T02:01:03Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1108.1020","created_at":"2026-05-18T02:01:03Z"},{"alias_kind":"pith_short_12","alias_value":"H2S46QGF753K","created_at":"2026-05-18T12:26:30Z"},{"alias_kind":"pith_short_16","alias_value":"H2S46QGF753KOJFE","created_at":"2026-05-18T12:26:30Z"},{"alias_kind":"pith_short_8","alias_value":"H2S46QGF","created_at":"2026-05-18T12:26:30Z"}],"graph_snapshots":[{"event_id":"sha256:a5dbe1d8cc6f6f8d8b006058e1a943d2d51ca0c7fa571c529ddf4b7ecf2e2d81","target":"graph","created_at":"2026-05-18T02:01:03Z","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":"The colour behaviour of blazars is a subject of much debate. One argument is that the BL Lac objects show bluer-when-brighter chromatism while the flat-spectrum radio quasars (FSRQs) display redder-when-brighter trend. Base on a 3.5-year three-colour monitoring programme, we studied the optical variability and colour behaviour of one FSRQ, 3C 345. There is at least one outburst in this period. The overall variation amplitude is 2.640 mags in the $i$ band. Intra-night variability was observed on two nights. The bluer-when-brighter and redder-when-brighter chromatisms were simultaneously observe","authors_text":"Jianghua Wu, Jun Ma, Zhaoji Jiang, Zhou Xu","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by/3.0/","primary_cat":"astro-ph.CO","submitted_at":"2011-08-04T08:34:24Z","title":"Optical Variability and Colour Behaviour of 3C 345"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1108.1020","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":"sha256:2c438a2b440ae0fd5a59bab8782a9b07e061501f7e78809ed6e3168b1d4ba35c","target":"record","created_at":"2026-05-18T02:01:03Z","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":"a5eec1fb83d6f64c45cad0b17166483e409d72d052d45f8a3fabf2bc2713f9ac","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/3.0/","primary_cat":"astro-ph.CO","submitted_at":"2011-08-04T08:34:24Z","title_canon_sha256":"2a924ca96e8530f767feaadd11951defd79fffd405206655f89043b61954fe74"},"schema_version":"1.0","source":{"id":"1108.1020","kind":"arxiv","version":1}},"canonical_sha256":"3ea5cf40c5ff76a724a441c445fe612e35efb0f7f8f02539886367524e31e822","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"3ea5cf40c5ff76a724a441c445fe612e35efb0f7f8f02539886367524e31e822","first_computed_at":"2026-05-18T02:01:03.048708Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:01:03.048708Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"NjrmOm4QJBTlETItadCpOMJTlxJQ2oF5vz/cGVgtzPdWRgYjNr1lBVLZki9wOTVY2pdMT3jCZnUG120jybSVCg==","signature_status":"signed_v1","signed_at":"2026-05-18T02:01:03.049452Z","signed_message":"canonical_sha256_bytes"},"source_id":"1108.1020","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:2c438a2b440ae0fd5a59bab8782a9b07e061501f7e78809ed6e3168b1d4ba35c","sha256:a5dbe1d8cc6f6f8d8b006058e1a943d2d51ca0c7fa571c529ddf4b7ecf2e2d81"],"state_sha256":"0c81a2a324cc5dfb95e6c5b1f4e351b2b5b852f6c8dcfcfacef17656442cf1b9"}