{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:YI7QAQ6ATVV263ILGYLFXP7OUQ","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":"63fbf2a7a41e817e7f5432217642172fcd6ae30c7430fa15e9517100c425e986","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2017-09-05T09:48:19Z","title_canon_sha256":"0efd1b5943fc4b21711dc3a3b0485ceb237bf244912bc477a7576523bbc51707"},"schema_version":"1.0","source":{"id":"1709.01309","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1709.01309","created_at":"2026-05-18T00:32:05Z"},{"alias_kind":"arxiv_version","alias_value":"1709.01309v1","created_at":"2026-05-18T00:32:05Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1709.01309","created_at":"2026-05-18T00:32:05Z"},{"alias_kind":"pith_short_12","alias_value":"YI7QAQ6ATVV2","created_at":"2026-05-18T12:31:56Z"},{"alias_kind":"pith_short_16","alias_value":"YI7QAQ6ATVV263IL","created_at":"2026-05-18T12:31:56Z"},{"alias_kind":"pith_short_8","alias_value":"YI7QAQ6A","created_at":"2026-05-18T12:31:56Z"}],"graph_snapshots":[{"event_id":"sha256:866c5be770459b1ba3eea40892225360b0d4667a85c6c673a66c5c77ca7a5b8c","target":"graph","created_at":"2026-05-18T00:32:05Z","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 report 192 previously unpublished optical linear polarization measurements of quasars obtained in April 2003, April 2007, and October 2007 with the European Southern Observatory Faint Object Spectrograph and Camera (EFOSC2) instrument attached to the 3.6m telescope at the La Silla Observatory. Each quasar was observed once. Among the 192 quasars, 89 have a polarization degree $p \\geq 0.6\\%$, 18 have $p \\geq 2\\%$, and two have $p \\geq 10\\%$.","authors_text":"D. Hutsem\\'ekers, D. Sluse, P. Hall","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2017-09-05T09:48:19Z","title":"Optical linear polarization measurements of quasars obtained with the 3.6m telescope at the La Silla Observatory"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1709.01309","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":"sha256:3e8b8f358497613b18e9540f6930bbdd9d5a7ee566c96bf44ace961664f52844","target":"record","created_at":"2026-05-18T00:32:05Z","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":"63fbf2a7a41e817e7f5432217642172fcd6ae30c7430fa15e9517100c425e986","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2017-09-05T09:48:19Z","title_canon_sha256":"0efd1b5943fc4b21711dc3a3b0485ceb237bf244912bc477a7576523bbc51707"},"schema_version":"1.0","source":{"id":"1709.01309","kind":"arxiv","version":1}},"canonical_sha256":"c23f0043c09d6baf6d0b36165bbfeea40ecca6a55b3a49229ad94cca23c7799a","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"c23f0043c09d6baf6d0b36165bbfeea40ecca6a55b3a49229ad94cca23c7799a","first_computed_at":"2026-05-18T00:32:05.379586Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:32:05.379586Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Sc6aWmlI19aoFf9HA8P0dv+Zc+98nPTkLohtIlXC0zfrrqbG9ZzZKWX8g0AH8MQ04iS1BFWVsBouV+/mjnzoBA==","signature_status":"signed_v1","signed_at":"2026-05-18T00:32:05.380140Z","signed_message":"canonical_sha256_bytes"},"source_id":"1709.01309","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:3e8b8f358497613b18e9540f6930bbdd9d5a7ee566c96bf44ace961664f52844","sha256:866c5be770459b1ba3eea40892225360b0d4667a85c6c673a66c5c77ca7a5b8c"],"state_sha256":"dfb2e8a88f37d5b99a9bc5a4dea79bcc0b1d9e8efbc1c6de9f071cf828655e9f"}