{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:1997:VSJRM5HKPLUMULJKIIZYUIG5GI","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":"92e2b87c6bf4d5dca15eccf2bda5fcb097308836a321b1a1be1a31b613199967","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"1997-04-16T14:27:53Z","title_canon_sha256":"b2154c0add97fc8f4ca93c954e4489de9c82161ba68373a72e1eb87816de1e2c"},"schema_version":"1.0","source":{"id":"astro-ph/9704163","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/9704163","created_at":"2026-05-18T01:21:56Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/9704163v1","created_at":"2026-05-18T01:21:56Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/9704163","created_at":"2026-05-18T01:21:56Z"},{"alias_kind":"pith_short_12","alias_value":"VSJRM5HKPLUM","created_at":"2026-05-18T12:25:48Z"},{"alias_kind":"pith_short_16","alias_value":"VSJRM5HKPLUMULJK","created_at":"2026-05-18T12:25:48Z"},{"alias_kind":"pith_short_8","alias_value":"VSJRM5HK","created_at":"2026-05-18T12:25:48Z"}],"graph_snapshots":[{"event_id":"sha256:ce36f45115b1029cd0fd69cb264ec2df800a334ded4ca38ba66b2d2838f3b7d3","target":"graph","created_at":"2026-05-18T01:21:56Z","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 present details of a new sample of radio-loud quasars drawn from 0.013 sr of the 7C Redshift Survey. This sample is small (21 quasars) but complete in that every object with an unresolved nucleus and/or broad emission lines with S(151MHz) > 0.5 Jy has been discovered. The dependence of the quasar fraction with redshift and radio luminosity is investigated, providing new evidence supporting the unification of radio-loud quasars and powerful radio galaxies. This 7C sample is compared with optically-selected quasars, in order to determine whether there are systematic biases in the different se","authors_text":"Chris J. Willott (Oxford), Katherine M. Blundell (Oxford), Mark Lacy (Oxford), Steve Rawlings (Oxford)","cross_cats":[],"headline":"","license":"","primary_cat":"astro-ph","submitted_at":"1997-04-16T14:27:53Z","title":"A complete sample of quasars from the 7C redshift survey"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/9704163","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":"sha256:99f9d6c6924dd3babbb04e4ec98b0db8c1564825617d5e428416dc7a67db5ec2","target":"record","created_at":"2026-05-18T01:21:56Z","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":"92e2b87c6bf4d5dca15eccf2bda5fcb097308836a321b1a1be1a31b613199967","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"1997-04-16T14:27:53Z","title_canon_sha256":"b2154c0add97fc8f4ca93c954e4489de9c82161ba68373a72e1eb87816de1e2c"},"schema_version":"1.0","source":{"id":"astro-ph/9704163","kind":"arxiv","version":1}},"canonical_sha256":"ac931674ea7ae8ca2d2a42338a20dd320c9976cb4684bdd579e29d563a4a6caf","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"ac931674ea7ae8ca2d2a42338a20dd320c9976cb4684bdd579e29d563a4a6caf","first_computed_at":"2026-05-18T01:21:56.532175Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:21:56.532175Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"xpe8GVtQX2QSkANh0Axnndi52EgUn/rA3RxKeFW+GLElZDmCZXlGiPTznfrCOIeAQJtOx8rxDKCY7RRHR5/wBw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:21:56.532854Z","signed_message":"canonical_sha256_bytes"},"source_id":"astro-ph/9704163","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:99f9d6c6924dd3babbb04e4ec98b0db8c1564825617d5e428416dc7a67db5ec2","sha256:ce36f45115b1029cd0fd69cb264ec2df800a334ded4ca38ba66b2d2838f3b7d3"],"state_sha256":"7345656d30b88afce655b171ec6300690bd3e94b58521efdaad0bac3f118276a"}