{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2025:W3Q46E4BEAAJKOGMX4G6XBQN6R","short_pith_number":"pith:W3Q46E4B","canonical_record":{"source":{"id":"2507.04359","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","primary_cat":"astro-ph.GA","submitted_at":"2025-07-06T11:46:32Z","cross_cats_sorted":[],"title_canon_sha256":"929001b943efb7394f234a6e67944d3b196d2358ce9cf61a02f6a3b008533dae","abstract_canon_sha256":"745c1b35c06c4c20cd604f6e471a9083ceb51517bd258c6b93f0f97300b00fb4"},"schema_version":"1.0"},"canonical_sha256":"b6e1cf138120009538ccbf0deb860df458c541f59259ac1884acfe06451ae399","source":{"kind":"arxiv","id":"2507.04359","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2507.04359","created_at":"2026-07-05T11:32:46Z"},{"alias_kind":"arxiv_version","alias_value":"2507.04359v1","created_at":"2026-07-05T11:32:46Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2507.04359","created_at":"2026-07-05T11:32:46Z"},{"alias_kind":"pith_short_12","alias_value":"W3Q46E4BEAAJ","created_at":"2026-07-05T11:32:46Z"},{"alias_kind":"pith_short_16","alias_value":"W3Q46E4BEAAJKOGM","created_at":"2026-07-05T11:32:46Z"},{"alias_kind":"pith_short_8","alias_value":"W3Q46E4B","created_at":"2026-07-05T11:32:46Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2025:W3Q46E4BEAAJKOGMX4G6XBQN6R","target":"record","payload":{"canonical_record":{"source":{"id":"2507.04359","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","primary_cat":"astro-ph.GA","submitted_at":"2025-07-06T11:46:32Z","cross_cats_sorted":[],"title_canon_sha256":"929001b943efb7394f234a6e67944d3b196d2358ce9cf61a02f6a3b008533dae","abstract_canon_sha256":"745c1b35c06c4c20cd604f6e471a9083ceb51517bd258c6b93f0f97300b00fb4"},"schema_version":"1.0"},"canonical_sha256":"b6e1cf138120009538ccbf0deb860df458c541f59259ac1884acfe06451ae399","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T11:32:46.406852Z","signature_b64":"9xrL7ADuMQeIZ1kFNUM1fqSL7AtSGGpjIW2gxnJqD8u1CrzQPGEnbfb43Wo7j5r6ZqHJyqWKoBL+rJTYfZ/9Bw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"b6e1cf138120009538ccbf0deb860df458c541f59259ac1884acfe06451ae399","last_reissued_at":"2026-07-05T11:32:46.406473Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T11:32:46.406473Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2507.04359","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":"2026-07-05T11:32:46Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"KUV7kBrqPu580XyR1Alcz0CDSu1wwoFmUe9Cg35pY7ptDFGktMFWXzW5U7pfY2R8atbIQbJJoXokTkp7cCRlDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-11T03:46:00.613086Z"},"content_sha256":"26bb296cb0fecd4ecde758ab07a08b2643718d5e9564e31193a0e4e7ce63470a","schema_version":"1.0","event_id":"sha256:26bb296cb0fecd4ecde758ab07a08b2643718d5e9564e31193a0e4e7ce63470a"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2025:W3Q46E4BEAAJKOGMX4G6XBQN6R","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Interband Lag Variability in Active Galactic Nuclei across ZTF Data from Multiple Years","license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Hengxiao Guo, Jun-Xian Wang, Mouyuan Sun, Zhen-Bo Su, Zhen-Yi Cai","submitted_at":"2025-07-06T11:46:32Z","abstract_excerpt":"Interband lags in the optical continua of active galactic nuclei (AGN) have been observed over years of monitoring, yet their physical origins remain unclear. While variable interband lags have been found in a few individual AGN potentially, the temporal behavior of interband lags of an AGN sample has not been explored systematically. Here, we analyze the interband lags of 94 bright AGN at $z<0.8$, using both seasonal one-year and full six-year $gri$-band light curves from Zwicky Transient Facility Data Release 22. We find that more than half of 94 AGN show significant seasonal variations in t"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2507.04359","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2507.04359/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":"2026-07-05T11:32:46Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"kIqmlv4iTpET+PJdrRWzvG/Om0yHeJ6aP+Lib6kRGtpYEtMXuSsgoS/KdyoQFzoND5XQlI/pD1zIn5boUXA7Dg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-11T03:46:00.613613Z"},"content_sha256":"f7b546a6edb58019f3f442341140990f4dde4fbd337e95116f72af2dd4865aee","schema_version":"1.0","event_id":"sha256:f7b546a6edb58019f3f442341140990f4dde4fbd337e95116f72af2dd4865aee"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/W3Q46E4BEAAJKOGMX4G6XBQN6R/bundle.json","state_url":"https://pith.science/pith/W3Q46E4BEAAJKOGMX4G6XBQN6R/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/W3Q46E4BEAAJKOGMX4G6XBQN6R/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":"2026-08-11T03:46:00Z","links":{"resolver":"https://pith.science/pith/W3Q46E4BEAAJKOGMX4G6XBQN6R","bundle":"https://pith.science/pith/W3Q46E4BEAAJKOGMX4G6XBQN6R/bundle.json","state":"https://pith.science/pith/W3Q46E4BEAAJKOGMX4G6XBQN6R/state.json","well_known_bundle":"https://pith.science/.well-known/pith/W3Q46E4BEAAJKOGMX4G6XBQN6R/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2025:W3Q46E4BEAAJKOGMX4G6XBQN6R","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":"745c1b35c06c4c20cd604f6e471a9083ceb51517bd258c6b93f0f97300b00fb4","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","primary_cat":"astro-ph.GA","submitted_at":"2025-07-06T11:46:32Z","title_canon_sha256":"929001b943efb7394f234a6e67944d3b196d2358ce9cf61a02f6a3b008533dae"},"schema_version":"1.0","source":{"id":"2507.04359","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2507.04359","created_at":"2026-07-05T11:32:46Z"},{"alias_kind":"arxiv_version","alias_value":"2507.04359v1","created_at":"2026-07-05T11:32:46Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2507.04359","created_at":"2026-07-05T11:32:46Z"},{"alias_kind":"pith_short_12","alias_value":"W3Q46E4BEAAJ","created_at":"2026-07-05T11:32:46Z"},{"alias_kind":"pith_short_16","alias_value":"W3Q46E4BEAAJKOGM","created_at":"2026-07-05T11:32:46Z"},{"alias_kind":"pith_short_8","alias_value":"W3Q46E4B","created_at":"2026-07-05T11:32:46Z"}],"graph_snapshots":[{"event_id":"sha256:f7b546a6edb58019f3f442341140990f4dde4fbd337e95116f72af2dd4865aee","target":"graph","created_at":"2026-07-05T11:32:46Z","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/2507.04359/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Interband lags in the optical continua of active galactic nuclei (AGN) have been observed over years of monitoring, yet their physical origins remain unclear. While variable interband lags have been found in a few individual AGN potentially, the temporal behavior of interband lags of an AGN sample has not been explored systematically. Here, we analyze the interband lags of 94 bright AGN at $z<0.8$, using both seasonal one-year and full six-year $gri$-band light curves from Zwicky Transient Facility Data Release 22. We find that more than half of 94 AGN show significant seasonal variations in t","authors_text":"Hengxiao Guo, Jun-Xian Wang, Mouyuan Sun, Zhen-Bo Su, Zhen-Yi Cai","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","primary_cat":"astro-ph.GA","submitted_at":"2025-07-06T11:46:32Z","title":"Interband Lag Variability in Active Galactic Nuclei across ZTF Data from Multiple Years"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2507.04359","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":"sha256:26bb296cb0fecd4ecde758ab07a08b2643718d5e9564e31193a0e4e7ce63470a","target":"record","created_at":"2026-07-05T11:32:46Z","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":"745c1b35c06c4c20cd604f6e471a9083ceb51517bd258c6b93f0f97300b00fb4","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","primary_cat":"astro-ph.GA","submitted_at":"2025-07-06T11:46:32Z","title_canon_sha256":"929001b943efb7394f234a6e67944d3b196d2358ce9cf61a02f6a3b008533dae"},"schema_version":"1.0","source":{"id":"2507.04359","kind":"arxiv","version":1}},"canonical_sha256":"b6e1cf138120009538ccbf0deb860df458c541f59259ac1884acfe06451ae399","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"b6e1cf138120009538ccbf0deb860df458c541f59259ac1884acfe06451ae399","first_computed_at":"2026-07-05T11:32:46.406473Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T11:32:46.406473Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"9xrL7ADuMQeIZ1kFNUM1fqSL7AtSGGpjIW2gxnJqD8u1CrzQPGEnbfb43Wo7j5r6ZqHJyqWKoBL+rJTYfZ/9Bw==","signature_status":"signed_v1","signed_at":"2026-07-05T11:32:46.406852Z","signed_message":"canonical_sha256_bytes"},"source_id":"2507.04359","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:26bb296cb0fecd4ecde758ab07a08b2643718d5e9564e31193a0e4e7ce63470a","sha256:f7b546a6edb58019f3f442341140990f4dde4fbd337e95116f72af2dd4865aee"],"state_sha256":"0bc2e4d2044c9ef71c4e73d48a6e804fbc0b22aa62b9b34c82e890ae3c4839b7"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"/+nj9vKAMTPNzq5dSP1wV0hHDEmzPjD9hpYmVEXmuNhKRHwFAyhTEIItnQRqFeUadqpSoQy49bD9x8KtHv6eCQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-11T03:46:00.618131Z","bundle_sha256":"35a38757d16d019baf0e0792cd7aa37ba99a047c592505c456df7cf67c43be55"}}