{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:XPMV3CO4BTF5BPTW4LL7BOG4BR","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":"2e599ef541814e6ebc4cd819e8f1c2d171b3b1070a0ff5802cc1f62b3b0587a9","cross_cats_sorted":["astro-ph.EP"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2019-02-11T19:00:01Z","title_canon_sha256":"3884eab131f94b26ed1abba0aa0875a66b922486371b52a68e9bb05c3e17f7cd"},"schema_version":"1.0","source":{"id":"1902.04080","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1902.04080","created_at":"2026-07-05T00:18:33Z"},{"alias_kind":"arxiv_version","alias_value":"1902.04080v2","created_at":"2026-07-05T00:18:33Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1902.04080","created_at":"2026-07-05T00:18:33Z"},{"alias_kind":"pith_short_12","alias_value":"XPMV3CO4BTF5","created_at":"2026-07-05T00:18:33Z"},{"alias_kind":"pith_short_16","alias_value":"XPMV3CO4BTF5BPTW","created_at":"2026-07-05T00:18:33Z"},{"alias_kind":"pith_short_8","alias_value":"XPMV3CO4","created_at":"2026-07-05T00:18:33Z"}],"graph_snapshots":[{"event_id":"sha256:5ad353ed75e3c24793e4332d96233efd49f0ace5364fa92c8ce4dfba81c47267","target":"graph","created_at":"2026-07-05T00:18:33Z","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/1902.04080/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Observations of circumstellar environments to look for the direct signal of exoplanets and the scattered light from disks has significant instrumental implications. In the past 15 years, major developments in adaptive optics, coronagraphy, optical manufacturing, wavefront sensing and data processing, together with a consistent global system analysis have enabled a new generation of high-contrast imagers and spectrographs on large ground-based telescopes with much better performance. One of the most productive is the Spectro-Polarimetic High contrast imager for Exoplanets REsearch (SPHERE) desi","authors_text":"A. Baruffolo, A. Bazzon, A. Boccaletti, A. Costille, A. Delboulb\\'e, A.-M. Lagrange, A. Orign\\'e, A. Pavlov, A. Roux, A. Sevin, A. Vigan, A. Zurlo, B. Le Ruyet, B. Salasnich, C. Dominik, C. Fabron, C. Ginski, C. Gry, C. Moutou, C. Petit, C. Soenke, D. Fantinel, D. Gisler, D. Le Mignant, D. Maurel, D. Mesa, D. Mouillet, D. Perret, D. Segransan, D. Tiph\\`ene, E. Cascone, E. Fedrigo, E. Giro, E. Hugot, E. Lagadec, E. Santambrogio, E. Stadler, F. Chapron, F. Madec, F. M\\'enard, F. Rigal, F. Vakili, F. Wildi, G. Chauvin, G. Farisato, G. Lessio, G. Rousset, G. Zins, H. Le Coroller, H. M. Schmid, J. Antichi, J. Baudrand, J. Charton, J.-F. Sauvage, J. Girard, J.-L. Beuzit, J.-L. Lizon, J. Milli, J.-M. Reess, J. Parisot, J. Pragt, J. Ramos, K. Dohlen, L. Abe, L. B. F. M. Waters, L. Gluck, L. Lundin, L. Weber, M. Carbillet, M. Carle, M. Downing, M. Feldt, M. Jaquet, M. Kasper, M. Langlois, M. Llored, M. Marteaud, M. Saisse, M. Suarez, M. Turatto, N. Hubin, O. Dupuis, O. M\\\"oller-Nilsson, P. Baudoz, P. Bernardi, P. Blanchard, P. Bruno, P. Feautrier, P. Gigan, P. Martinez, P. Puget, P. Rabou, R. Barette, R. Brast, R. Claudi, R. Gratton, R. Roelfsema, R. Siebenmorgen, S. Desidera, S. Incorvaia, S. Rochat, S. Scuderi, S. Udry, T. Buey, T. Fusco, T. Henning, T. Moulin, U. Anselmi, V. De Caprio, Y. Magnard, Z. Wahhaj","cross_cats":["astro-ph.EP"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2019-02-11T19:00:01Z","title":"SPHERE: the exoplanet imager for the Very Large Telescope"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1902.04080","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:f530daf5e3b2d071ac186cc9fd322b88e7d76f7a9de43353c0f970c75c1386f6","target":"record","created_at":"2026-07-05T00:18:33Z","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":"2e599ef541814e6ebc4cd819e8f1c2d171b3b1070a0ff5802cc1f62b3b0587a9","cross_cats_sorted":["astro-ph.EP"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2019-02-11T19:00:01Z","title_canon_sha256":"3884eab131f94b26ed1abba0aa0875a66b922486371b52a68e9bb05c3e17f7cd"},"schema_version":"1.0","source":{"id":"1902.04080","kind":"arxiv","version":2}},"canonical_sha256":"bbd95d89dc0ccbd0be76e2d7f0b8dc0c6a90fd442cc5ad7daa4eced91926c3a1","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"bbd95d89dc0ccbd0be76e2d7f0b8dc0c6a90fd442cc5ad7daa4eced91926c3a1","first_computed_at":"2026-07-05T00:18:33.436413Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T00:18:33.436413Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"d/6h3OhOohqN29Mg8w8xyI1uxPwBfDhI0TzaHaNH4VgRkoXeJ53drsuMOfBmHC+xYRQogLgJcN2zbSN0ByHzBA==","signature_status":"signed_v1","signed_at":"2026-07-05T00:18:33.436925Z","signed_message":"canonical_sha256_bytes"},"source_id":"1902.04080","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:f530daf5e3b2d071ac186cc9fd322b88e7d76f7a9de43353c0f970c75c1386f6","sha256:5ad353ed75e3c24793e4332d96233efd49f0ace5364fa92c8ce4dfba81c47267"],"state_sha256":"ff0a3dc450a890f3e270e0eb282f9fa6f2bf0b63fd568205bf874d97b2709332"}