{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:UK5JUYECW5XDSXW3TX7Y4YXS7P","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":"5523a9a45d45a2786d1cc55227e75375220d3dd3033ca7618a47379d01ea6688","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","primary_cat":"astro-ph.GA","submitted_at":"2026-06-25T08:32:08Z","title_canon_sha256":"aee57cee4452d7c8d847d6e53424a245abb98ca5427fbf203ff2c3d8c6b5cdc9"},"schema_version":"1.0","source":{"id":"2606.26745","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2606.26745","created_at":"2026-06-26T01:15:58Z"},{"alias_kind":"arxiv_version","alias_value":"2606.26745v1","created_at":"2026-06-26T01:15:58Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2606.26745","created_at":"2026-06-26T01:15:58Z"},{"alias_kind":"pith_short_12","alias_value":"UK5JUYECW5XD","created_at":"2026-06-26T01:15:58Z"},{"alias_kind":"pith_short_16","alias_value":"UK5JUYECW5XDSXW3","created_at":"2026-06-26T01:15:58Z"},{"alias_kind":"pith_short_8","alias_value":"UK5JUYEC","created_at":"2026-06-26T01:15:58Z"}],"graph_snapshots":[{"event_id":"sha256:b3dd3f26724a70385ef4e19e18125c18a4fadce715799e6b1ebbe3821938f7b0","target":"graph","created_at":"2026-06-26T01:15:58Z","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/2606.26745/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The development of SKA will open the opportunity to run dedicated VLBI surveys of the Southern sky and observe sources not visible at radio telescopes located in the Northern hemisphere. These surveys will allow for doing geodesy with a Southern hemisphere-centered network, increase the density of compact radio sources that can be used as calibrators, further extend the celestial reference frame to deep south, and facilitate high-precision differential astrometry for a wide range of applications. Achieving a deep completeness level and determining the parsec-scale properties of extragalactic r","authors_text":"L. Y. Petrov, M. H. Xu, Y. Y. Kovalev","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","primary_cat":"astro-ph.GA","submitted_at":"2026-06-25T08:32:08Z","title":"SKA VLBI survey of the Southern sky for astrometry, geodesy, and astrophysics"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2606.26745","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":"sha256:94277558350a3101fd8e0e974f720fb18dbd7a012c5561e0ec13af6d67440a61","target":"record","created_at":"2026-06-26T01:15:58Z","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":"5523a9a45d45a2786d1cc55227e75375220d3dd3033ca7618a47379d01ea6688","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","primary_cat":"astro-ph.GA","submitted_at":"2026-06-25T08:32:08Z","title_canon_sha256":"aee57cee4452d7c8d847d6e53424a245abb98ca5427fbf203ff2c3d8c6b5cdc9"},"schema_version":"1.0","source":{"id":"2606.26745","kind":"arxiv","version":1}},"canonical_sha256":"a2ba9a6082b76e395edb9dff8e62f2fbd96a698ca23b244054b85742c881bc03","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"a2ba9a6082b76e395edb9dff8e62f2fbd96a698ca23b244054b85742c881bc03","first_computed_at":"2026-06-26T01:15:58.621811Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-06-26T01:15:58.621811Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"NRsF+g5LnLv0dLc9y+0dziddahfGwIFjwKon/hLRdjVWG/fdpMG54nS7wkLB6hTmcAAEHCBQFpBDBT+Qq47UAg==","signature_status":"signed_v1","signed_at":"2026-06-26T01:15:58.622204Z","signed_message":"canonical_sha256_bytes"},"source_id":"2606.26745","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:94277558350a3101fd8e0e974f720fb18dbd7a012c5561e0ec13af6d67440a61","sha256:b3dd3f26724a70385ef4e19e18125c18a4fadce715799e6b1ebbe3821938f7b0"],"state_sha256":"13084ab694dcf283d73eb59d138469290e515b6fd35d933abb755e569dd022d3"}