{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:FY4K4KL6XTA5P2N5NT5TZJZ3QO","short_pith_number":"pith:FY4K4KL6","canonical_record":{"source":{"id":"1508.00959","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2015-08-05T02:38:11Z","cross_cats_sorted":[],"title_canon_sha256":"86b2d17b736acd8de0d818a3403333dae758fff612d551d8d5b2b2e60c79d9f0","abstract_canon_sha256":"9a56da9951959a66002aefe8edea6aa5dc1691e2348c8e503359ff9561a0d99b"},"schema_version":"1.0"},"canonical_sha256":"2e38ae297ebcc1d7e9bd6cfb3ca73b83a6849205d38790d2a805c6d7d62d2234","source":{"kind":"arxiv","id":"1508.00959","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1508.00959","created_at":"2026-05-18T01:28:47Z"},{"alias_kind":"arxiv_version","alias_value":"1508.00959v1","created_at":"2026-05-18T01:28:47Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1508.00959","created_at":"2026-05-18T01:28:47Z"},{"alias_kind":"pith_short_12","alias_value":"FY4K4KL6XTA5","created_at":"2026-05-18T12:29:22Z"},{"alias_kind":"pith_short_16","alias_value":"FY4K4KL6XTA5P2N5","created_at":"2026-05-18T12:29:22Z"},{"alias_kind":"pith_short_8","alias_value":"FY4K4KL6","created_at":"2026-05-18T12:29:22Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:FY4K4KL6XTA5P2N5NT5TZJZ3QO","target":"record","payload":{"canonical_record":{"source":{"id":"1508.00959","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2015-08-05T02:38:11Z","cross_cats_sorted":[],"title_canon_sha256":"86b2d17b736acd8de0d818a3403333dae758fff612d551d8d5b2b2e60c79d9f0","abstract_canon_sha256":"9a56da9951959a66002aefe8edea6aa5dc1691e2348c8e503359ff9561a0d99b"},"schema_version":"1.0"},"canonical_sha256":"2e38ae297ebcc1d7e9bd6cfb3ca73b83a6849205d38790d2a805c6d7d62d2234","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:28:47.269164Z","signature_b64":"T3ofXvvfl6u9M+AQ8kERvrcIPGhpLazG2iBtnsNBTHRR53ox5Uqn1B563pb9au+MjdCBd1iRArlrySodBN8yAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"2e38ae297ebcc1d7e9bd6cfb3ca73b83a6849205d38790d2a805c6d7d62d2234","last_reissued_at":"2026-05-18T01:28:47.268270Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:28:47.268270Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1508.00959","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":"2026-05-18T01:28:47Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"MuzlfS/jaAZAD4BPQveUkym1qunVy9JpTl8WYiQGkiOqqTxvpR9A5+4HbJzIDisW42btEEqv+qdCXY6y/Mx3AA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T20:20:11.329220Z"},"content_sha256":"30117c4dd0b6d1f3aa02b4e055dbb600ae167f3e7c6097b720b92464ed86a03f","schema_version":"1.0","event_id":"sha256:30117c4dd0b6d1f3aa02b4e055dbb600ae167f3e7c6097b720b92464ed86a03f"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:FY4K4KL6XTA5P2N5NT5TZJZ3QO","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Optical and Radio Variability of BL Lacertae","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"A. Agarwal, A. E. Volvach, A. Lahteenmaki, Alok C. Gupta, A. Strigachev, E. Semkov, Haritma Gaur, H. D. Aller, I. Agudo, L. A. Sigua, L. N. Volvach, M. F. Aller, M. G. Nikolashvili, Minfeng Gu, M. Tornikoski, O. M. Kurtanidze, Paul J. Wiita, R. Bachev, S. O. Kurtanidze, S. Peneva","submitted_at":"2015-08-05T02:38:11Z","abstract_excerpt":"We observed the prototype blazar, BL Lacertae, extensively in optical and radio bands during an active phase in the period 2010--2013 when the source showed several prominent outbursts. We searched for possible correlations and time lags between the optical and radio band flux variations using multifrequency data to learn about the mechanisms producing variability. During an active phase of BL Lacertae, we searched for possible correlations and time lags between multifrequency light curves of several optical and radio bands. We tried to estimate any possible variability timescales and inter-ba"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1508.00959","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":"2026-05-18T01:28:47Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"U8awShkCx3bmP3ix12UQfuN/OK38RiNR7iQg+f6c6taw5KTY04eUttaw/YN5WqSzOy96dC977qgkKTrSUEBRDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T20:20:11.329906Z"},"content_sha256":"be422f8af337a08437cd712f022c52b9dc0816b2bc2dacee661504ef594bc8a4","schema_version":"1.0","event_id":"sha256:be422f8af337a08437cd712f022c52b9dc0816b2bc2dacee661504ef594bc8a4"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/FY4K4KL6XTA5P2N5NT5TZJZ3QO/bundle.json","state_url":"https://pith.science/pith/FY4K4KL6XTA5P2N5NT5TZJZ3QO/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/FY4K4KL6XTA5P2N5NT5TZJZ3QO/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":"2026-05-28T20:20:11Z","links":{"resolver":"https://pith.science/pith/FY4K4KL6XTA5P2N5NT5TZJZ3QO","bundle":"https://pith.science/pith/FY4K4KL6XTA5P2N5NT5TZJZ3QO/bundle.json","state":"https://pith.science/pith/FY4K4KL6XTA5P2N5NT5TZJZ3QO/state.json","well_known_bundle":"https://pith.science/.well-known/pith/FY4K4KL6XTA5P2N5NT5TZJZ3QO/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:FY4K4KL6XTA5P2N5NT5TZJZ3QO","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":"9a56da9951959a66002aefe8edea6aa5dc1691e2348c8e503359ff9561a0d99b","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2015-08-05T02:38:11Z","title_canon_sha256":"86b2d17b736acd8de0d818a3403333dae758fff612d551d8d5b2b2e60c79d9f0"},"schema_version":"1.0","source":{"id":"1508.00959","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1508.00959","created_at":"2026-05-18T01:28:47Z"},{"alias_kind":"arxiv_version","alias_value":"1508.00959v1","created_at":"2026-05-18T01:28:47Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1508.00959","created_at":"2026-05-18T01:28:47Z"},{"alias_kind":"pith_short_12","alias_value":"FY4K4KL6XTA5","created_at":"2026-05-18T12:29:22Z"},{"alias_kind":"pith_short_16","alias_value":"FY4K4KL6XTA5P2N5","created_at":"2026-05-18T12:29:22Z"},{"alias_kind":"pith_short_8","alias_value":"FY4K4KL6","created_at":"2026-05-18T12:29:22Z"}],"graph_snapshots":[{"event_id":"sha256:be422f8af337a08437cd712f022c52b9dc0816b2bc2dacee661504ef594bc8a4","target":"graph","created_at":"2026-05-18T01:28:47Z","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 observed the prototype blazar, BL Lacertae, extensively in optical and radio bands during an active phase in the period 2010--2013 when the source showed several prominent outbursts. We searched for possible correlations and time lags between the optical and radio band flux variations using multifrequency data to learn about the mechanisms producing variability. During an active phase of BL Lacertae, we searched for possible correlations and time lags between multifrequency light curves of several optical and radio bands. We tried to estimate any possible variability timescales and inter-ba","authors_text":"A. Agarwal, A. E. Volvach, A. Lahteenmaki, Alok C. Gupta, A. Strigachev, E. Semkov, Haritma Gaur, H. D. Aller, I. Agudo, L. A. Sigua, L. N. Volvach, M. F. Aller, M. G. Nikolashvili, Minfeng Gu, M. Tornikoski, O. M. Kurtanidze, Paul J. Wiita, R. Bachev, S. O. Kurtanidze, S. Peneva","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2015-08-05T02:38:11Z","title":"Optical and Radio Variability of BL Lacertae"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1508.00959","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":"sha256:30117c4dd0b6d1f3aa02b4e055dbb600ae167f3e7c6097b720b92464ed86a03f","target":"record","created_at":"2026-05-18T01:28:47Z","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":"9a56da9951959a66002aefe8edea6aa5dc1691e2348c8e503359ff9561a0d99b","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2015-08-05T02:38:11Z","title_canon_sha256":"86b2d17b736acd8de0d818a3403333dae758fff612d551d8d5b2b2e60c79d9f0"},"schema_version":"1.0","source":{"id":"1508.00959","kind":"arxiv","version":1}},"canonical_sha256":"2e38ae297ebcc1d7e9bd6cfb3ca73b83a6849205d38790d2a805c6d7d62d2234","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"2e38ae297ebcc1d7e9bd6cfb3ca73b83a6849205d38790d2a805c6d7d62d2234","first_computed_at":"2026-05-18T01:28:47.268270Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:28:47.268270Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"T3ofXvvfl6u9M+AQ8kERvrcIPGhpLazG2iBtnsNBTHRR53ox5Uqn1B563pb9au+MjdCBd1iRArlrySodBN8yAQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:28:47.269164Z","signed_message":"canonical_sha256_bytes"},"source_id":"1508.00959","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:30117c4dd0b6d1f3aa02b4e055dbb600ae167f3e7c6097b720b92464ed86a03f","sha256:be422f8af337a08437cd712f022c52b9dc0816b2bc2dacee661504ef594bc8a4"],"state_sha256":"9b2095e291b0554053c3270b279d152de652dbc24ec03e6a26693e4ed0a60b65"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"CT71keOys/kxyKH5195Igjc+3K+nuHVWdb1wK33CvMtHkkHBhRm7fWi0Hlt+0l08zI1EhjcdkkuY44Z5dME2Bg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-28T20:20:11.333376Z","bundle_sha256":"f409f235d1dd8f2c5374aac9e6aa1f09b39bb1348811c385dc2d14377156d2e9"}}