{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:OPDWZG2YMCGP6KVOKMYH6SR54A","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":"ccd17b65f97cc4dea543cb602cf5d2b0b9e27111c4b926bece28f7453b86e897","cross_cats_sorted":["astro-ph.GA","astro-ph.IM"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2019-03-11T02:43:03Z","title_canon_sha256":"f053229aacbbf672f1590d0ea89f8fc9042545f7b5eed3997920a4de79d846d9"},"schema_version":"1.0","source":{"id":"1903.04105","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1903.04105","created_at":"2026-05-17T23:47:25Z"},{"alias_kind":"arxiv_version","alias_value":"1903.04105v2","created_at":"2026-05-17T23:47:25Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1903.04105","created_at":"2026-05-17T23:47:25Z"},{"alias_kind":"pith_short_12","alias_value":"OPDWZG2YMCGP","created_at":"2026-05-18T12:33:24Z"},{"alias_kind":"pith_short_16","alias_value":"OPDWZG2YMCGP6KVO","created_at":"2026-05-18T12:33:24Z"},{"alias_kind":"pith_short_8","alias_value":"OPDWZG2Y","created_at":"2026-05-18T12:33:24Z"}],"graph_snapshots":[{"event_id":"sha256:13817d6d780e5661080a07523e7578ee74b0fc2a77a157210455ec719aff18b5","target":"graph","created_at":"2026-05-17T23:47:25Z","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 compare the parallaxes of stars from VLBI astrometry in the literature to those in the Gaia DR2 catalog. Our full sample contains young stellar objects, evolved AGB stars, pulsars and other radio stars. Excluding AGB stars, which show significant discrepancies between Gaia and VLBI parallaxes, and stars in binary systems, we obtain an average, systematic, parallax offset of $-75 \\pm 29~\\mu$as for Gaia DR2, consistent with their estimate of a parallax zero-point between $-100$ and 0 $\\mu$as.","authors_text":"Bo Zhang, Guangli Wang, Mark J. Reid, Shuangjing Xu, Xingwu Zheng","cross_cats":["astro-ph.GA","astro-ph.IM"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2019-03-11T02:43:03Z","title":"Comparison of Gaia DR2 Parallaxes of Stars with VLBI Astrometry"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1903.04105","kind":"arxiv","version":2},"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":"sha256:71d10beab48cd88b16f6f360d2104af5f8f9ecb29dfce8d070adb480bffd3d69","target":"record","created_at":"2026-05-17T23:47:25Z","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":"ccd17b65f97cc4dea543cb602cf5d2b0b9e27111c4b926bece28f7453b86e897","cross_cats_sorted":["astro-ph.GA","astro-ph.IM"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2019-03-11T02:43:03Z","title_canon_sha256":"f053229aacbbf672f1590d0ea89f8fc9042545f7b5eed3997920a4de79d846d9"},"schema_version":"1.0","source":{"id":"1903.04105","kind":"arxiv","version":2}},"canonical_sha256":"73c76c9b58608cff2aae53307f4a3de028a3ed9845f76652f33268a3feb77b77","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"73c76c9b58608cff2aae53307f4a3de028a3ed9845f76652f33268a3feb77b77","first_computed_at":"2026-05-17T23:47:25.409008Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:47:25.409008Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"bz+rv3rk9Zarec/M3a58fa/rjnSkprgmQub6TdJ/1K2lzKkfMl0XfHFm9DJHIcUoXl5cFZinzoSvScnqL/YFCA==","signature_status":"signed_v1","signed_at":"2026-05-17T23:47:25.409624Z","signed_message":"canonical_sha256_bytes"},"source_id":"1903.04105","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:71d10beab48cd88b16f6f360d2104af5f8f9ecb29dfce8d070adb480bffd3d69","sha256:13817d6d780e5661080a07523e7578ee74b0fc2a77a157210455ec719aff18b5"],"state_sha256":"2f3a27d6cd9e5a8361a61bcc379fbfd32ae55d85832cafb2cd6f06e973c69be3"}