{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2022:GR7A7V2TGVNTI462QAX25GQ742","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":"7d717c31022d382be81e65bc5c752187678493469dafbb6c1b34237aa02d4e88","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.IM","submitted_at":"2022-01-11T06:15:28Z","title_canon_sha256":"c8989fe4ffbf3f4686b0e5d57c79cb1185201a3486f56ebb3f8012cc2ca5d61b"},"schema_version":"1.0","source":{"id":"2201.03797","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2201.03797","created_at":"2026-07-05T04:45:14Z"},{"alias_kind":"arxiv_version","alias_value":"2201.03797v2","created_at":"2026-07-05T04:45:14Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2201.03797","created_at":"2026-07-05T04:45:14Z"},{"alias_kind":"pith_short_12","alias_value":"GR7A7V2TGVNT","created_at":"2026-07-05T04:45:14Z"},{"alias_kind":"pith_short_16","alias_value":"GR7A7V2TGVNTI462","created_at":"2026-07-05T04:45:14Z"},{"alias_kind":"pith_short_8","alias_value":"GR7A7V2T","created_at":"2026-07-05T04:45:14Z"}],"graph_snapshots":[{"event_id":"sha256:f8fbe393f9557ea7c96b5e751f2fbaaa685331561b88f5fb7187dfa02edc8875","target":"graph","created_at":"2026-07-05T04:45:14Z","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/2201.03797/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We present OmniUV, a multi-purpose simulation toolkit for space and ground VLBI observations. It supports various kinds of VLBI stations, including Earth (ground) fixed, Earth orbit, Lunar fixed, Lunar orbit, Moon-Earth and Earth-Sun Lagrange 1 and 2 points, etc. The main functionalities of this toolkit are: (1) Trajectory calculation; (2) Baseline uv calculation, by taking the vailability of each station into account; (3) Visibility simulation for the given uv distribution, source structure and system noise; (4) Image and beam reconstruction. Two scenarios, namely space VLBI network and wide ","authors_text":"Jian Fu, Lei Liu, Weimin Zheng, Zhijun Xu","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.IM","submitted_at":"2022-01-11T06:15:28Z","title":"OmniUV: A Multi-Purpose Simulation Toolkit for VLBI Observation"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2201.03797","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":"sha256:4e25f609014db5582fc9d8d7b91e92e501b7258cd1df6712b982a30c1ea0f3e3","target":"record","created_at":"2026-07-05T04:45:14Z","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":"7d717c31022d382be81e65bc5c752187678493469dafbb6c1b34237aa02d4e88","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.IM","submitted_at":"2022-01-11T06:15:28Z","title_canon_sha256":"c8989fe4ffbf3f4686b0e5d57c79cb1185201a3486f56ebb3f8012cc2ca5d61b"},"schema_version":"1.0","source":{"id":"2201.03797","kind":"arxiv","version":2}},"canonical_sha256":"347e0fd753355b3473da802fae9a1fe6ab11eb513e917e3cbfc26ecb3627be25","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"347e0fd753355b3473da802fae9a1fe6ab11eb513e917e3cbfc26ecb3627be25","first_computed_at":"2026-07-05T04:45:14.904595Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T04:45:14.904595Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"hXgFyBoGi6UhjKOjscWABrBF5yM1FMX4+lUX9q9t8PhfSKdkrP5Xmy3QSLol687/4B9ZP1GgcnsEkLV0+M3iAg==","signature_status":"signed_v1","signed_at":"2026-07-05T04:45:14.905074Z","signed_message":"canonical_sha256_bytes"},"source_id":"2201.03797","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:4e25f609014db5582fc9d8d7b91e92e501b7258cd1df6712b982a30c1ea0f3e3","sha256:f8fbe393f9557ea7c96b5e751f2fbaaa685331561b88f5fb7187dfa02edc8875"],"state_sha256":"2f5d669bf2547e67c28ee53c42b4ed8b2f9f7980bcb3faed44e12219910e92c3"}