{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:7RHAK6U4FV5PPNTIGYRGHO5N3Q","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":"9e9bc53b61eccc4df00a27479a476ec06021fee0fedb258bf63559edd4a5a446","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2017-10-05T16:21:40Z","title_canon_sha256":"8f31c87ccddbf10bd2ed05c61a78322f9091603ebfb219718d238447895ca75c"},"schema_version":"1.0","source":{"id":"1710.02099","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1710.02099","created_at":"2026-05-18T00:33:37Z"},{"alias_kind":"arxiv_version","alias_value":"1710.02099v1","created_at":"2026-05-18T00:33:37Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1710.02099","created_at":"2026-05-18T00:33:37Z"},{"alias_kind":"pith_short_12","alias_value":"7RHAK6U4FV5P","created_at":"2026-05-18T12:31:05Z"},{"alias_kind":"pith_short_16","alias_value":"7RHAK6U4FV5PPNTI","created_at":"2026-05-18T12:31:05Z"},{"alias_kind":"pith_short_8","alias_value":"7RHAK6U4","created_at":"2026-05-18T12:31:05Z"}],"graph_snapshots":[{"event_id":"sha256:5284e2689c21a9bbd2fc629bf857c9bf0d4d7c10b20aa566f426227a00265502","target":"graph","created_at":"2026-05-18T00:33:37Z","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 a catalog of extragalactic proper motions created using archival VLBI data and our own VLBA astrometry. The catalog contains 713 proper motions, with average uncertainties of ~ 24 muas/yr, including 40 new or improved proper motion measurements using relative astrometry with the VLBA. The observations were conducted in X-band and yielded positions with uncertainties ~ 70 muas. We add 10 new redshifts using spectroscopic observations taken at Apache Point Observatory and Gemini North. With the VLBA Extragalactic Proper Motion Catalog, we detect the secular aberration drift - the appa","authors_text":"Alexandra E Truebenbach, Jeremy Darling","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2017-10-05T16:21:40Z","title":"The VLBA Extragalactic Proper Motion Catalog and a Measurement of the Secular Aberration Drift"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1710.02099","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":"sha256:63dca0631c6c839458dc79b512c847a979b37851029942ba7005b7c1286ba973","target":"record","created_at":"2026-05-18T00:33:37Z","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":"9e9bc53b61eccc4df00a27479a476ec06021fee0fedb258bf63559edd4a5a446","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2017-10-05T16:21:40Z","title_canon_sha256":"8f31c87ccddbf10bd2ed05c61a78322f9091603ebfb219718d238447895ca75c"},"schema_version":"1.0","source":{"id":"1710.02099","kind":"arxiv","version":1}},"canonical_sha256":"fc4e057a9c2d7af7b668362263bbaddc25af70be65ac5414450929654d1a7e9b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"fc4e057a9c2d7af7b668362263bbaddc25af70be65ac5414450929654d1a7e9b","first_computed_at":"2026-05-18T00:33:37.530566Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:33:37.530566Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"FFlifPBEBHJuv8B8ZP216dar4cW8w4APug0XVkWzGmXJySxllgKs+ehwsSvb9gj3ZJ4zerI5Om79BgBuCXG0Cw==","signature_status":"signed_v1","signed_at":"2026-05-18T00:33:37.531225Z","signed_message":"canonical_sha256_bytes"},"source_id":"1710.02099","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:63dca0631c6c839458dc79b512c847a979b37851029942ba7005b7c1286ba973","sha256:5284e2689c21a9bbd2fc629bf857c9bf0d4d7c10b20aa566f426227a00265502"],"state_sha256":"a311fd70cb88f2a1afdb64741761749568f95807327c4652cd4c3332439a5ae0"}