{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2020:VL77YDHPQH3HZEC5AQBWSZQWW3","short_pith_number":"pith:VL77YDHP","canonical_record":{"source":{"id":"2001.02398","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2020-01-08T07:09:28Z","cross_cats_sorted":[],"title_canon_sha256":"01e5aa622f21a2602c910dd4b7efb34849f875be25e137efb56fd8b8b59dce7a","abstract_canon_sha256":"e27bf29f072f5f2b9c6e10130d36674af9296b0e1f3e1073a83f0c59b8d532f5"},"schema_version":"1.0"},"canonical_sha256":"aafffc0cef81f67c905d0403696616b6c413afacbe5c92f613878565e7836377","source":{"kind":"arxiv","id":"2001.02398","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2001.02398","created_at":"2026-07-05T00:43:45Z"},{"alias_kind":"arxiv_version","alias_value":"2001.02398v1","created_at":"2026-07-05T00:43:45Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2001.02398","created_at":"2026-07-05T00:43:45Z"},{"alias_kind":"pith_short_12","alias_value":"VL77YDHPQH3H","created_at":"2026-07-05T00:43:45Z"},{"alias_kind":"pith_short_16","alias_value":"VL77YDHPQH3HZEC5","created_at":"2026-07-05T00:43:45Z"},{"alias_kind":"pith_short_8","alias_value":"VL77YDHP","created_at":"2026-07-05T00:43:45Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2020:VL77YDHPQH3HZEC5AQBWSZQWW3","target":"record","payload":{"canonical_record":{"source":{"id":"2001.02398","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2020-01-08T07:09:28Z","cross_cats_sorted":[],"title_canon_sha256":"01e5aa622f21a2602c910dd4b7efb34849f875be25e137efb56fd8b8b59dce7a","abstract_canon_sha256":"e27bf29f072f5f2b9c6e10130d36674af9296b0e1f3e1073a83f0c59b8d532f5"},"schema_version":"1.0"},"canonical_sha256":"aafffc0cef81f67c905d0403696616b6c413afacbe5c92f613878565e7836377","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T00:43:45.085920Z","signature_b64":"gigRgDW7xflVFNrjl7bSymwi80ba2Gvg0HR+SgYMN03Huk9s0kCQREJKsw7gZao+G4o+vyg/Ct5JNp5JtRXDCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"aafffc0cef81f67c905d0403696616b6c413afacbe5c92f613878565e7836377","last_reissued_at":"2026-07-05T00:43:45.085526Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T00:43:45.085526Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2001.02398","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":"2026-07-05T00:43:45Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"TcHSvNoIdN/CmuZbDmmiBDrUrXfa4bpVoDoCke5edOS03iZcyaCTC9sJc9pSpRSTRSrbNsF3QI8ZBm7FH5gdAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-05T11:52:51.407734Z"},"content_sha256":"6ed7af18a94dde61282ff3680ece7f76fe96ee7f8e66c28670ca2afca56c9b02","schema_version":"1.0","event_id":"sha256:6ed7af18a94dde61282ff3680ece7f76fe96ee7f8e66c28670ca2afca56c9b02"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2020:VL77YDHPQH3HZEC5AQBWSZQWW3","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Optical Variability of the TeV Blazar 1ES 0806+524 on Diverse Timescales","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"A. Darriba, Alok C. Gupta, Ashwani Pandey, A. Strigachev, E. Semkov, G. Damljanovic, G. Latev, Jin Zhang, M. G. Nikolashvili, O. M. Kurtanidze, O. Vince, Paul J. Wiita, R. A. Chigladze, R. Bachev, S. N. Tiwari, Sofia O. Kurtanidze, S. Peneva","submitted_at":"2020-01-08T07:09:28Z","abstract_excerpt":"We report the results of our optical (VRI) photometric observations of the TeV blazar 1ES 0806$+$524 on 153 nights during 2011-2019 using seven optical telescopes in Europe and Asia. We investigated the variability of the blazar on intraday as well as on long-term timescales. We examined eighteen intraday light curves for flux and color variations using the most reliable power-enhanced F-test and the nested ANOVA test. Only on one night was a small, but significant, variation found, in both $V$ band and $R$ band light curves. The $V-R$ color index was constant on every one of those nights. Flu"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2001.02398","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/2001.02398/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":"2026-07-05T00:43:45Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"S0tM63NTZLGYrbQ9jUTUCZIRpk5/V3NtaNpN7B6sq2A66Xni8gX/bRAGDlBQb24rTTi6yAOztKwZdPuLd7iYCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-05T11:52:51.408111Z"},"content_sha256":"a311f98d257f586df3eb3e40c03d52c274696335cb0f06211f7c086d805eeb5a","schema_version":"1.0","event_id":"sha256:a311f98d257f586df3eb3e40c03d52c274696335cb0f06211f7c086d805eeb5a"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/VL77YDHPQH3HZEC5AQBWSZQWW3/bundle.json","state_url":"https://pith.science/pith/VL77YDHPQH3HZEC5AQBWSZQWW3/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/VL77YDHPQH3HZEC5AQBWSZQWW3/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":"2026-07-05T11:52:51Z","links":{"resolver":"https://pith.science/pith/VL77YDHPQH3HZEC5AQBWSZQWW3","bundle":"https://pith.science/pith/VL77YDHPQH3HZEC5AQBWSZQWW3/bundle.json","state":"https://pith.science/pith/VL77YDHPQH3HZEC5AQBWSZQWW3/state.json","well_known_bundle":"https://pith.science/.well-known/pith/VL77YDHPQH3HZEC5AQBWSZQWW3/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:VL77YDHPQH3HZEC5AQBWSZQWW3","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":"e27bf29f072f5f2b9c6e10130d36674af9296b0e1f3e1073a83f0c59b8d532f5","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2020-01-08T07:09:28Z","title_canon_sha256":"01e5aa622f21a2602c910dd4b7efb34849f875be25e137efb56fd8b8b59dce7a"},"schema_version":"1.0","source":{"id":"2001.02398","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2001.02398","created_at":"2026-07-05T00:43:45Z"},{"alias_kind":"arxiv_version","alias_value":"2001.02398v1","created_at":"2026-07-05T00:43:45Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2001.02398","created_at":"2026-07-05T00:43:45Z"},{"alias_kind":"pith_short_12","alias_value":"VL77YDHPQH3H","created_at":"2026-07-05T00:43:45Z"},{"alias_kind":"pith_short_16","alias_value":"VL77YDHPQH3HZEC5","created_at":"2026-07-05T00:43:45Z"},{"alias_kind":"pith_short_8","alias_value":"VL77YDHP","created_at":"2026-07-05T00:43:45Z"}],"graph_snapshots":[{"event_id":"sha256:a311f98d257f586df3eb3e40c03d52c274696335cb0f06211f7c086d805eeb5a","target":"graph","created_at":"2026-07-05T00:43:45Z","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/2001.02398/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We report the results of our optical (VRI) photometric observations of the TeV blazar 1ES 0806$+$524 on 153 nights during 2011-2019 using seven optical telescopes in Europe and Asia. We investigated the variability of the blazar on intraday as well as on long-term timescales. We examined eighteen intraday light curves for flux and color variations using the most reliable power-enhanced F-test and the nested ANOVA test. Only on one night was a small, but significant, variation found, in both $V$ band and $R$ band light curves. The $V-R$ color index was constant on every one of those nights. Flu","authors_text":"A. Darriba, Alok C. Gupta, Ashwani Pandey, A. Strigachev, E. Semkov, G. Damljanovic, G. Latev, Jin Zhang, M. G. Nikolashvili, O. M. Kurtanidze, O. Vince, Paul J. Wiita, R. A. Chigladze, R. Bachev, S. N. Tiwari, Sofia O. Kurtanidze, S. Peneva","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2020-01-08T07:09:28Z","title":"Optical Variability of the TeV Blazar 1ES 0806+524 on Diverse Timescales"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2001.02398","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":"sha256:6ed7af18a94dde61282ff3680ece7f76fe96ee7f8e66c28670ca2afca56c9b02","target":"record","created_at":"2026-07-05T00:43:45Z","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":"e27bf29f072f5f2b9c6e10130d36674af9296b0e1f3e1073a83f0c59b8d532f5","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2020-01-08T07:09:28Z","title_canon_sha256":"01e5aa622f21a2602c910dd4b7efb34849f875be25e137efb56fd8b8b59dce7a"},"schema_version":"1.0","source":{"id":"2001.02398","kind":"arxiv","version":1}},"canonical_sha256":"aafffc0cef81f67c905d0403696616b6c413afacbe5c92f613878565e7836377","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"aafffc0cef81f67c905d0403696616b6c413afacbe5c92f613878565e7836377","first_computed_at":"2026-07-05T00:43:45.085526Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T00:43:45.085526Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"gigRgDW7xflVFNrjl7bSymwi80ba2Gvg0HR+SgYMN03Huk9s0kCQREJKsw7gZao+G4o+vyg/Ct5JNp5JtRXDCA==","signature_status":"signed_v1","signed_at":"2026-07-05T00:43:45.085920Z","signed_message":"canonical_sha256_bytes"},"source_id":"2001.02398","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:6ed7af18a94dde61282ff3680ece7f76fe96ee7f8e66c28670ca2afca56c9b02","sha256:a311f98d257f586df3eb3e40c03d52c274696335cb0f06211f7c086d805eeb5a"],"state_sha256":"455d468eb33194675af74f94e5177425f7783df9f5458d1b01d14d1c03a4c0f8"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"La4dcpVvCv23np9Q38sbUtmFmXYLRTkTsxaUNkvnXT1vTHVR3hjhgD/Ts+nIbllbjmlF2GzP/8vMaFRBk83LDw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-05T11:52:51.410046Z","bundle_sha256":"295e68ecb0b77613473e9a34f09f82040cc237b28cc4183d7b27d507f50850eb"}}