{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2013:MY2P3653LWV7ISRTT6WZSYUPVV","short_pith_number":"pith:MY2P3653","schema_version":"1.0","canonical_sha256":"6634fdfbbb5dabf44a339fad99628fad4892f64da134249d5a7b534ab948da94","source":{"kind":"arxiv","id":"1305.3017","version":1},"attestation_state":"computed","paper":{"title":"Optical Spectra of Flat-Spectrum ICRF Radio Sources","license":"http://creativecommons.org/licenses/by/3.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"A. Boldycheva, David L. Jauncey, Helen M. Johnston, K. Maslennikov, Laura M. Stanford, Oleg Titov, Richard W. Hunstead, Tapio Pursimo","submitted_at":"2013-05-14T04:22:27Z","abstract_excerpt":"Continuing our program of spectroscopic observations of ICRF sources, we present redshifts for 120 quasars and radio galaxies. Data were obtained with five telescopes: the 3.58m ESO New Technology Telescope (NTT), the two 8.2m Gemini telescopes, the 2.5m Nordic Optical Telescope (NOT), and the 6.0m Big Azimuthal Telescope (BTA) of the Special Astrophysical Observatory in Russia.\n  The targets were selected from the International VLBI Service for Geodesy & Astrometry (IVS) candidate International Celestial Reference Catalogue which forms part of an observational VLBI program to strengthen the c"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"1305.3017","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/3.0/","primary_cat":"astro-ph.CO","submitted_at":"2013-05-14T04:22:27Z","cross_cats_sorted":[],"title_canon_sha256":"282bad61c4f0d2a41c921919508b92722dfcbb98f1d6461a39a9b7335d0e1bec","abstract_canon_sha256":"37bd80e6ac3614a9da783b5f93bc5411e49b58780afcbaa42bd7fee646fe84d5"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:25:45.108178Z","signature_b64":"CfksZoVXydEG+XLFpm8lMB8UKNsHDvrzMvNAqWFugC8vSkQ7KgzUruHBZq0q11HvPDZTerCK9gtV6G2VZRnODg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"6634fdfbbb5dabf44a339fad99628fad4892f64da134249d5a7b534ab948da94","last_reissued_at":"2026-05-18T03:25:45.107396Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:25:45.107396Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Optical Spectra of Flat-Spectrum ICRF Radio Sources","license":"http://creativecommons.org/licenses/by/3.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"A. Boldycheva, David L. Jauncey, Helen M. Johnston, K. Maslennikov, Laura M. Stanford, Oleg Titov, Richard W. Hunstead, Tapio Pursimo","submitted_at":"2013-05-14T04:22:27Z","abstract_excerpt":"Continuing our program of spectroscopic observations of ICRF sources, we present redshifts for 120 quasars and radio galaxies. Data were obtained with five telescopes: the 3.58m ESO New Technology Telescope (NTT), the two 8.2m Gemini telescopes, the 2.5m Nordic Optical Telescope (NOT), and the 6.0m Big Azimuthal Telescope (BTA) of the Special Astrophysical Observatory in Russia.\n  The targets were selected from the International VLBI Service for Geodesy & Astrometry (IVS) candidate International Celestial Reference Catalogue which forms part of an observational VLBI program to strengthen the c"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1305.3017","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"},"aliases":[{"alias_kind":"arxiv","alias_value":"1305.3017","created_at":"2026-05-18T03:25:45.107513+00:00"},{"alias_kind":"arxiv_version","alias_value":"1305.3017v1","created_at":"2026-05-18T03:25:45.107513+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1305.3017","created_at":"2026-05-18T03:25:45.107513+00:00"},{"alias_kind":"pith_short_12","alias_value":"MY2P3653LWV7","created_at":"2026-05-18T12:27:52.871228+00:00"},{"alias_kind":"pith_short_16","alias_value":"MY2P3653LWV7ISRT","created_at":"2026-05-18T12:27:52.871228+00:00"},{"alias_kind":"pith_short_8","alias_value":"MY2P3653","created_at":"2026-05-18T12:27:52.871228+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/MY2P3653LWV7ISRTT6WZSYUPVV","json":"https://pith.science/pith/MY2P3653LWV7ISRTT6WZSYUPVV.json","graph_json":"https://pith.science/api/pith-number/MY2P3653LWV7ISRTT6WZSYUPVV/graph.json","events_json":"https://pith.science/api/pith-number/MY2P3653LWV7ISRTT6WZSYUPVV/events.json","paper":"https://pith.science/paper/MY2P3653"},"agent_actions":{"view_html":"https://pith.science/pith/MY2P3653LWV7ISRTT6WZSYUPVV","download_json":"https://pith.science/pith/MY2P3653LWV7ISRTT6WZSYUPVV.json","view_paper":"https://pith.science/paper/MY2P3653","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1305.3017&json=true","fetch_graph":"https://pith.science/api/pith-number/MY2P3653LWV7ISRTT6WZSYUPVV/graph.json","fetch_events":"https://pith.science/api/pith-number/MY2P3653LWV7ISRTT6WZSYUPVV/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/MY2P3653LWV7ISRTT6WZSYUPVV/action/timestamp_anchor","attest_storage":"https://pith.science/pith/MY2P3653LWV7ISRTT6WZSYUPVV/action/storage_attestation","attest_author":"https://pith.science/pith/MY2P3653LWV7ISRTT6WZSYUPVV/action/author_attestation","sign_citation":"https://pith.science/pith/MY2P3653LWV7ISRTT6WZSYUPVV/action/citation_signature","submit_replication":"https://pith.science/pith/MY2P3653LWV7ISRTT6WZSYUPVV/action/replication_record"}},"created_at":"2026-05-18T03:25:45.107513+00:00","updated_at":"2026-05-18T03:25:45.107513+00:00"}