{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:LLSG5HRFOFGCQHHSDHBPMSAWR7","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":"6e6471d1cfa693241b6c677b9d42914b79d413d1f1f0abbf20250bb41443b6f4","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2014-07-22T13:22:27Z","title_canon_sha256":"1d6faab6d68966add04bd6c28c66b28d3faaccdb4015a0dcbd148989c3edbe61"},"schema_version":"1.0","source":{"id":"1407.5853","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1407.5853","created_at":"2026-05-18T02:47:06Z"},{"alias_kind":"arxiv_version","alias_value":"1407.5853v1","created_at":"2026-05-18T02:47:06Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1407.5853","created_at":"2026-05-18T02:47:06Z"},{"alias_kind":"pith_short_12","alias_value":"LLSG5HRFOFGC","created_at":"2026-05-18T12:28:38Z"},{"alias_kind":"pith_short_16","alias_value":"LLSG5HRFOFGCQHHS","created_at":"2026-05-18T12:28:38Z"},{"alias_kind":"pith_short_8","alias_value":"LLSG5HRF","created_at":"2026-05-18T12:28:38Z"}],"graph_snapshots":[{"event_id":"sha256:b1ec660cc709e01f5cf9c3e60ce3b77279a1edb9b200401f185eabf010a8b823","target":"graph","created_at":"2026-05-18T02:47:06Z","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":"The full LINC-NIRVANA instrument will be one of the most complex ground-based astronomical systems ever built. It will consist of multiple subsystems, including two multi-conjugate ground layer AO systems (MCAO) that drive the LBT adaptive secondaries, two mid-high layer AO systems with their own Xynetics 349 actuator DM's , a fringe tracker, a beam combiner, and the NIR science camera. In order to mitigate risk, we take a modular approach to instrument testing and commissioning by decoupling these subsystems individually. The first subsystem tested on-sky will be one of the ground-layer AO sy","authors_text":"Al Conrad, Alessandro Brunelli, Carmelo Arcidiacono, Daniel Meschke, Derek Kopon, Florian Briegel, Frank Kittmann, Fulvio De Bonis, Harald Baumeister, Jacopo Farinato, Jorg-Uwe Pott, J\\\"urgen Berwein, Lars Mohr, Maria Bergomi, Martin K\\\"urster, Peter Bizenberger, Ralf-Rainer Rohloff, Ralph Hofferbert, Roberto Ragazzoni, Thomas Bertram, Tom Herbst, Valentina Viotto, Xianyu Zhang","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2014-07-22T13:22:27Z","title":"Laboratory Results and Status Update for Pathfinder at LBT, The LINC-NIRVANA NGS Ground- Layer AO Subsystem"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1407.5853","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:a42bc6bb2bb3bb2b0b83393a3ed930e182c80dd20d5e32a135eb77e321f7340e","target":"record","created_at":"2026-05-18T02:47:06Z","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":"6e6471d1cfa693241b6c677b9d42914b79d413d1f1f0abbf20250bb41443b6f4","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2014-07-22T13:22:27Z","title_canon_sha256":"1d6faab6d68966add04bd6c28c66b28d3faaccdb4015a0dcbd148989c3edbe61"},"schema_version":"1.0","source":{"id":"1407.5853","kind":"arxiv","version":1}},"canonical_sha256":"5ae46e9e25714c281cf219c2f648168fd995a20b01135798a87df17bf787e2ea","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"5ae46e9e25714c281cf219c2f648168fd995a20b01135798a87df17bf787e2ea","first_computed_at":"2026-05-18T02:47:06.512362Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:47:06.512362Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Z2Fvx087rqznHTKkYubB7b4ErsBXoOT1EtOhK4UhZvr4bGWmbIZu6RvHpUIxcoi9uUWgUNv3JlL4hXlhuF0uDQ==","signature_status":"signed_v1","signed_at":"2026-05-18T02:47:06.512745Z","signed_message":"canonical_sha256_bytes"},"source_id":"1407.5853","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:a42bc6bb2bb3bb2b0b83393a3ed930e182c80dd20d5e32a135eb77e321f7340e","sha256:b1ec660cc709e01f5cf9c3e60ce3b77279a1edb9b200401f185eabf010a8b823"],"state_sha256":"a9e50cb5056822a082464da89f5780d249e810ad94f7da765ff016a2667b9f1a"}