{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2022:22WS2OUTFJTXMBAPEBUCMOK6XK","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":"58dc719bbcccd965df5e5440080debe6ce6f74d44eb901aad64d121fbd1c8133","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.IM","submitted_at":"2022-03-29T14:59:41Z","title_canon_sha256":"34d28ef832c169c2df31f697eb41073c33b6f2dbc9ab4dcae4dbac1adef97911"},"schema_version":"1.0","source":{"id":"2203.15637","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2203.15637","created_at":"2026-07-05T04:09:28Z"},{"alias_kind":"arxiv_version","alias_value":"2203.15637v1","created_at":"2026-07-05T04:09:28Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2203.15637","created_at":"2026-07-05T04:09:28Z"},{"alias_kind":"pith_short_12","alias_value":"22WS2OUTFJTX","created_at":"2026-07-05T04:09:28Z"},{"alias_kind":"pith_short_16","alias_value":"22WS2OUTFJTXMBAP","created_at":"2026-07-05T04:09:28Z"},{"alias_kind":"pith_short_8","alias_value":"22WS2OUT","created_at":"2026-07-05T04:09:28Z"}],"graph_snapshots":[{"event_id":"sha256:9cc2e45c0d38931af1c5c8d8959b978ba33c714da203960325400d7a46a92a86","target":"graph","created_at":"2026-07-05T04:09:28Z","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/2203.15637/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"CUBES is the Cassegrain U-Band Efficient Spectrograph, a high-efficiency instrument operating in the UV spectral range between 300nm and 400nm with a resolution not less than 20000. CUBES is to be installed at a Cassegrain focus of the Very Large Telescope of the European Southern Observatory. The paper briefly reviews various types of devices used as dispersing elements in astronomical spectrographs to achieve high resolution, before identifying binary transmission gratings produced by microlithography as the best candidate technology for the CUBES instrument. We describe the lithographic fab","authors_text":"A. Bianco, A. Zanutta, F. Burmeister, H. Dekker, T. Fl\\\"ugel-Paul, U. D. Zeitner","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.IM","submitted_at":"2022-03-29T14:59:41Z","title":"High efficiency transmission grating for the ESO CUBES UV spectrograph"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2203.15637","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":"sha256:5e6ed652f68726b6110af871991d19ed8b6a331c4f9b50291b1133462f26cf86","target":"record","created_at":"2026-07-05T04:09:28Z","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":"58dc719bbcccd965df5e5440080debe6ce6f74d44eb901aad64d121fbd1c8133","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.IM","submitted_at":"2022-03-29T14:59:41Z","title_canon_sha256":"34d28ef832c169c2df31f697eb41073c33b6f2dbc9ab4dcae4dbac1adef97911"},"schema_version":"1.0","source":{"id":"2203.15637","kind":"arxiv","version":1}},"canonical_sha256":"d6ad2d3a932a6776040f206826395ebaae8dc14d25d38391de021341c23042d9","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"d6ad2d3a932a6776040f206826395ebaae8dc14d25d38391de021341c23042d9","first_computed_at":"2026-07-05T04:09:28.591839Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T04:09:28.591839Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Q7FL8ScPMiDJra4LCcvcIQmyAY6x543kwtmY0vTAd6fX7P/oB5O9JtcIyo8esMomH1nKwWrcw1UIzQCHBdShCQ==","signature_status":"signed_v1","signed_at":"2026-07-05T04:09:28.592232Z","signed_message":"canonical_sha256_bytes"},"source_id":"2203.15637","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:5e6ed652f68726b6110af871991d19ed8b6a331c4f9b50291b1133462f26cf86","sha256:9cc2e45c0d38931af1c5c8d8959b978ba33c714da203960325400d7a46a92a86"],"state_sha256":"47fc7de43a28bbcc1b23626586c7b6dc211fb4c1e1b94cb5f69ad52cdb924448"}