{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:P3NYYKWRWOMTD3OYTX3NFSDP7F","short_pith_number":"pith:P3NYYKWR","canonical_record":{"source":{"id":"1702.04151","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2017-02-14T11:00:33Z","cross_cats_sorted":[],"title_canon_sha256":"6d50710d7a9923aa30bc8c8dcbbfead0042788eea66a7cf5685dc76c2389f5bb","abstract_canon_sha256":"306bb452786fb76ce86fc2e154e3bbdc22193368856c1731c8eb55880690dfce"},"schema_version":"1.0"},"canonical_sha256":"7edb8c2ad1b39931edd89df6d2c86ff96a45a18e7074cb3c9a64161214ce1a45","source":{"kind":"arxiv","id":"1702.04151","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1702.04151","created_at":"2026-05-18T00:50:48Z"},{"alias_kind":"arxiv_version","alias_value":"1702.04151v1","created_at":"2026-05-18T00:50:48Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1702.04151","created_at":"2026-05-18T00:50:48Z"},{"alias_kind":"pith_short_12","alias_value":"P3NYYKWRWOMT","created_at":"2026-05-18T12:31:37Z"},{"alias_kind":"pith_short_16","alias_value":"P3NYYKWRWOMTD3OY","created_at":"2026-05-18T12:31:37Z"},{"alias_kind":"pith_short_8","alias_value":"P3NYYKWR","created_at":"2026-05-18T12:31:37Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:P3NYYKWRWOMTD3OYTX3NFSDP7F","target":"record","payload":{"canonical_record":{"source":{"id":"1702.04151","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2017-02-14T11:00:33Z","cross_cats_sorted":[],"title_canon_sha256":"6d50710d7a9923aa30bc8c8dcbbfead0042788eea66a7cf5685dc76c2389f5bb","abstract_canon_sha256":"306bb452786fb76ce86fc2e154e3bbdc22193368856c1731c8eb55880690dfce"},"schema_version":"1.0"},"canonical_sha256":"7edb8c2ad1b39931edd89df6d2c86ff96a45a18e7074cb3c9a64161214ce1a45","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:50:48.937551Z","signature_b64":"ADuTOo2bWdOMbli7JC3w9XDKVjzNVfgujUXydu2b3oFAvQMk/DPQCqWF7H0EmFPOx4RrtBBXCCPjq4opsW8DCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"7edb8c2ad1b39931edd89df6d2c86ff96a45a18e7074cb3c9a64161214ce1a45","last_reissued_at":"2026-05-18T00:50:48.937053Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:50:48.937053Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1702.04151","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":"2026-05-18T00:50:48Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"pzZmypibyuz4RJobv5xKe4LXx0H8YFyuaEJODjL86LPOhNra7fk0csBe1pTU1eiRL7PAiSqgUrUiMl9rbiIrBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T06:03:18.890161Z"},"content_sha256":"0e62879750f8035998ed36ff59ba11afc378a98a6255b2b21aea62354586931c","schema_version":"1.0","event_id":"sha256:0e62879750f8035998ed36ff59ba11afc378a98a6255b2b21aea62354586931c"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:P3NYYKWRWOMTD3OYTX3NFSDP7F","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The Optical Polarization Variability of PKS 2155-304: Correlations at Low and High Energies","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"Nikki Pekeur, Ren\\'ee Kraan-Korteweg, Russ Taylor","submitted_at":"2017-02-14T11:00:33Z","abstract_excerpt":"Gamma-ray emitting blazars have been the targets of many recent or ongoing monitoring programmes. The resulting multi-wavelength data archives are ideal for studying the quiescent and variable behaviour of the blazar PKS 2155-304. Here, observations of the optical polarization of the source between 2009 and 2014 (> 5 years) are presented, together with overlapping radio, photometric and gamma-ray measurements. During this time the source displayed significant variability at all wavelengths, with several prominent flares seen for the optical and gamma-ray intensity. These flares are typically a"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1702.04151","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":"2026-05-18T00:50:48Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"vWAWhzT5zexP9IHEL5fYvOMQODBomBK539ECKbFlC50L4xOF/HSFaLbt9vhYgJCbb5J3b25iakGXM8O2fuwTAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T06:03:18.890513Z"},"content_sha256":"53c5de7efb5dabe1c3008dbc99002a94a26e3889789330b754adada27677dc59","schema_version":"1.0","event_id":"sha256:53c5de7efb5dabe1c3008dbc99002a94a26e3889789330b754adada27677dc59"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/P3NYYKWRWOMTD3OYTX3NFSDP7F/bundle.json","state_url":"https://pith.science/pith/P3NYYKWRWOMTD3OYTX3NFSDP7F/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/P3NYYKWRWOMTD3OYTX3NFSDP7F/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":"2026-06-02T06:03:18Z","links":{"resolver":"https://pith.science/pith/P3NYYKWRWOMTD3OYTX3NFSDP7F","bundle":"https://pith.science/pith/P3NYYKWRWOMTD3OYTX3NFSDP7F/bundle.json","state":"https://pith.science/pith/P3NYYKWRWOMTD3OYTX3NFSDP7F/state.json","well_known_bundle":"https://pith.science/.well-known/pith/P3NYYKWRWOMTD3OYTX3NFSDP7F/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:P3NYYKWRWOMTD3OYTX3NFSDP7F","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":"306bb452786fb76ce86fc2e154e3bbdc22193368856c1731c8eb55880690dfce","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2017-02-14T11:00:33Z","title_canon_sha256":"6d50710d7a9923aa30bc8c8dcbbfead0042788eea66a7cf5685dc76c2389f5bb"},"schema_version":"1.0","source":{"id":"1702.04151","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1702.04151","created_at":"2026-05-18T00:50:48Z"},{"alias_kind":"arxiv_version","alias_value":"1702.04151v1","created_at":"2026-05-18T00:50:48Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1702.04151","created_at":"2026-05-18T00:50:48Z"},{"alias_kind":"pith_short_12","alias_value":"P3NYYKWRWOMT","created_at":"2026-05-18T12:31:37Z"},{"alias_kind":"pith_short_16","alias_value":"P3NYYKWRWOMTD3OY","created_at":"2026-05-18T12:31:37Z"},{"alias_kind":"pith_short_8","alias_value":"P3NYYKWR","created_at":"2026-05-18T12:31:37Z"}],"graph_snapshots":[{"event_id":"sha256:53c5de7efb5dabe1c3008dbc99002a94a26e3889789330b754adada27677dc59","target":"graph","created_at":"2026-05-18T00:50:48Z","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":"Gamma-ray emitting blazars have been the targets of many recent or ongoing monitoring programmes. The resulting multi-wavelength data archives are ideal for studying the quiescent and variable behaviour of the blazar PKS 2155-304. Here, observations of the optical polarization of the source between 2009 and 2014 (> 5 years) are presented, together with overlapping radio, photometric and gamma-ray measurements. During this time the source displayed significant variability at all wavelengths, with several prominent flares seen for the optical and gamma-ray intensity. These flares are typically a","authors_text":"Nikki Pekeur, Ren\\'ee Kraan-Korteweg, Russ Taylor","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2017-02-14T11:00:33Z","title":"The Optical Polarization Variability of PKS 2155-304: Correlations at Low and High Energies"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1702.04151","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":"sha256:0e62879750f8035998ed36ff59ba11afc378a98a6255b2b21aea62354586931c","target":"record","created_at":"2026-05-18T00:50:48Z","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":"306bb452786fb76ce86fc2e154e3bbdc22193368856c1731c8eb55880690dfce","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2017-02-14T11:00:33Z","title_canon_sha256":"6d50710d7a9923aa30bc8c8dcbbfead0042788eea66a7cf5685dc76c2389f5bb"},"schema_version":"1.0","source":{"id":"1702.04151","kind":"arxiv","version":1}},"canonical_sha256":"7edb8c2ad1b39931edd89df6d2c86ff96a45a18e7074cb3c9a64161214ce1a45","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"7edb8c2ad1b39931edd89df6d2c86ff96a45a18e7074cb3c9a64161214ce1a45","first_computed_at":"2026-05-18T00:50:48.937053Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:50:48.937053Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"ADuTOo2bWdOMbli7JC3w9XDKVjzNVfgujUXydu2b3oFAvQMk/DPQCqWF7H0EmFPOx4RrtBBXCCPjq4opsW8DCQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:50:48.937551Z","signed_message":"canonical_sha256_bytes"},"source_id":"1702.04151","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:0e62879750f8035998ed36ff59ba11afc378a98a6255b2b21aea62354586931c","sha256:53c5de7efb5dabe1c3008dbc99002a94a26e3889789330b754adada27677dc59"],"state_sha256":"afb6c5e1725bccbe7c97b9ebb2a2c1178afc0c00b37aac42a2ac089ab9a9e742"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"iFwmdRbNqexumpfhQqfCVnPpndSIiUnAXPyOUN+pN7wWTeeiqky0i0rlzkyoTnnlGabBJqkzeModoEQQoedZDQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-02T06:03:18.892445Z","bundle_sha256":"65ac9851d386644c215881a7cd97d5b5b9697ef7db51ffb133ab99c007226b45"}}