{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2007:3CZSWHUSUQVFG4F7DYQQVNXI6R","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":"2ad54176d092eb480f989847307f13adf79465a6c8546a4bfe93bad879fc8e98","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2007-05-08T19:28:34Z","title_canon_sha256":"f66bcaec330bdc0d72f0b1ea31bfe89a37925e1eb86a13ff13de20748acd7e5d"},"schema_version":"1.0","source":{"id":"0705.1153","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0705.1153","created_at":"2026-07-04T17:03:46Z"},{"alias_kind":"arxiv_version","alias_value":"0705.1153v1","created_at":"2026-07-04T17:03:46Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0705.1153","created_at":"2026-07-04T17:03:46Z"},{"alias_kind":"pith_short_12","alias_value":"3CZSWHUSUQVF","created_at":"2026-07-04T17:03:46Z"},{"alias_kind":"pith_short_16","alias_value":"3CZSWHUSUQVFG4F7","created_at":"2026-07-04T17:03:46Z"},{"alias_kind":"pith_short_8","alias_value":"3CZSWHUS","created_at":"2026-07-04T17:03:46Z"}],"graph_snapshots":[{"event_id":"sha256:1d6e553064c81bc69b670eb6c13f055bf919a2aa1dde3ce64726b616d12bd41f","target":"graph","created_at":"2026-07-04T17:03:46Z","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/0705.1153/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We present optical UBVRI sky brightness measures from 1992 through 2006. The data are based on CCD imagery obtained with the CTIO 0.9-m, 1.3-m, and 1.5-m telescopes. The B- and V-band data are in reasonable agreement with measurements previously made at Mauna Kea, though on the basis of a small number of images per year there are discrepancies for the years 1992 through 1994. Our CCD-based data are not significantly different than values obtained at Cerro Paranal. We find that the yearly averages of V-band sky brightness are best correlated with the 10.7-cm solar flux taken 5 days prior to the","authors_text":"Dylan R. Semler, Hugo E. Schwarz, Joseph Richards, Kevin Krisciunas, Nicholas B. Suntzeff, Pedro Sanhueza, Sergio Vera","cross_cats":[],"headline":"","license":"","primary_cat":"astro-ph","submitted_at":"2007-05-08T19:28:34Z","title":"Optical Sky Brightness at Cerro Tololo Inter-American Observatory from 1992 to 2006"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0705.1153","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":"sha256:4e0c4b9c27edf4eb028abf862e8b6bc395827252ce36dab9dce2a7892bbf825b","target":"record","created_at":"2026-07-04T17:03:46Z","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":"2ad54176d092eb480f989847307f13adf79465a6c8546a4bfe93bad879fc8e98","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2007-05-08T19:28:34Z","title_canon_sha256":"f66bcaec330bdc0d72f0b1ea31bfe89a37925e1eb86a13ff13de20748acd7e5d"},"schema_version":"1.0","source":{"id":"0705.1153","kind":"arxiv","version":1}},"canonical_sha256":"d8b32b1e92a42a5370bf1e210ab6e8f46dd9039e590eab5750d673c63cbc870b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"d8b32b1e92a42a5370bf1e210ab6e8f46dd9039e590eab5750d673c63cbc870b","first_computed_at":"2026-07-04T17:03:46.872436Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T17:03:46.872436Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"P7krK4DKN0I5XvE8BjzN49hgwO7UzK9RIqHt9ulk8c6k6APRdaEUMXYE1F3hkMhL3jTy1xnffw88UbBwSCaACg==","signature_status":"signed_v1","signed_at":"2026-07-04T17:03:46.872781Z","signed_message":"canonical_sha256_bytes"},"source_id":"0705.1153","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:4e0c4b9c27edf4eb028abf862e8b6bc395827252ce36dab9dce2a7892bbf825b","sha256:1d6e553064c81bc69b670eb6c13f055bf919a2aa1dde3ce64726b616d12bd41f"],"state_sha256":"f3a8ea3ddd90d478a6fb544dc8a2a856130ff48fe60537ffc666d6f218bc3584"}