{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:P6REDQITYITFOYCWXC3MYWWBST","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":"a7f48f3e1ea71a549f4bc3c45146638c4d98ebc45606e18d184e6b09cb475ca3","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2020-04-14T15:29:13Z","title_canon_sha256":"a9e3ad5dcfd2d55b879e122b2dd539ae226a7cd0d86a8b4287bddd1bc210311d"},"schema_version":"1.0","source":{"id":"2004.06600","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2004.06600","created_at":"2026-07-05T01:19:01Z"},{"alias_kind":"arxiv_version","alias_value":"2004.06600v2","created_at":"2026-07-05T01:19:01Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2004.06600","created_at":"2026-07-05T01:19:01Z"},{"alias_kind":"pith_short_12","alias_value":"P6REDQITYITF","created_at":"2026-07-05T01:19:01Z"},{"alias_kind":"pith_short_16","alias_value":"P6REDQITYITFOYCW","created_at":"2026-07-05T01:19:01Z"},{"alias_kind":"pith_short_8","alias_value":"P6REDQIT","created_at":"2026-07-05T01:19:01Z"}],"graph_snapshots":[{"event_id":"sha256:a4bd9fdc04403f2f1340bd4dfc47c0cc38a2dcbe01e0e659a0c6734d8fdecab0","target":"graph","created_at":"2026-07-05T01:19:01Z","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/2004.06600/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"By combining LAMOST DR4 and Gaia DR2 common red clump stars with age and proper motion, we analyze the amplitude evolution of the stellar warp independently of any assumption with a simple model. The greatest height of the warp disk increases with Galactocentric distance in different populations and it is dependent on the age: the younger stellar populations exhibit stronger warp features than the old ones, accompanied with the warp amplitude $\\gamma ({\\rm age})$ decreasing with age and its first derivative $\\dot{\\gamma} ({\\rm age})$ is different from zero. The azimuth of line of nodes $\\phi _","authors_text":"B.-Q. Chen, H.-F. Wang, H.-W. Zhang, J. Chang, J. L. Carlin, M. L\\'opez-Corredoira, \\v{Z}. Chrob\\'akov\\'a, X.-D. Chen, Y. Huang","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2020-04-14T15:29:13Z","title":"Mapping the Galactic disk with the LAMOST and Gaia Red clump sample. VI: An evidence for the long lived non-steady warp of non-gravitational scenarios"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2004.06600","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:e981a815d02c64c51c3dfb1502eec0d58cbf9462cf3f0f73cb907fadf046be81","target":"record","created_at":"2026-07-05T01:19:01Z","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":"a7f48f3e1ea71a549f4bc3c45146638c4d98ebc45606e18d184e6b09cb475ca3","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2020-04-14T15:29:13Z","title_canon_sha256":"a9e3ad5dcfd2d55b879e122b2dd539ae226a7cd0d86a8b4287bddd1bc210311d"},"schema_version":"1.0","source":{"id":"2004.06600","kind":"arxiv","version":2}},"canonical_sha256":"7fa241c113c226576056b8b6cc5ac194e83f60d093a79f5a5cd52e5c1209c754","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"7fa241c113c226576056b8b6cc5ac194e83f60d093a79f5a5cd52e5c1209c754","first_computed_at":"2026-07-05T01:19:01.377777Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T01:19:01.377777Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"2Fw+p7RIzJr9/QOOBRxJlnWL1CKzWDB431LcpZ9SGFquZU9romoUXIkfTdPxaNg2esZWorrOol/ZRe3HDrsVAA==","signature_status":"signed_v1","signed_at":"2026-07-05T01:19:01.378331Z","signed_message":"canonical_sha256_bytes"},"source_id":"2004.06600","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:e981a815d02c64c51c3dfb1502eec0d58cbf9462cf3f0f73cb907fadf046be81","sha256:a4bd9fdc04403f2f1340bd4dfc47c0cc38a2dcbe01e0e659a0c6734d8fdecab0"],"state_sha256":"2d3476a91afbcb0836dfbb04245cffa5abc99801d14054b7da077fe30ece5b53"}