{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2022:BKHZVSFPFFEKUNA4QHGWLMHMX6","short_pith_number":"pith:BKHZVSFP","canonical_record":{"source":{"id":"2209.02092","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.IM","submitted_at":"2022-09-05T18:30:14Z","cross_cats_sorted":["astro-ph.EP"],"title_canon_sha256":"eeb9780a5102f427cffa905a84d0a8bed377aee2a486249f2b2f305232c5433d","abstract_canon_sha256":"61a88456f512ad6f6819c2a33fdd0d9eab55b6565064659d92bc331b163856d7"},"schema_version":"1.0"},"canonical_sha256":"0a8f9ac8af2948aa341c81cd65b0ecbf8b4a5f7305913a540279743f831f9423","source":{"kind":"arxiv","id":"2209.02092","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2209.02092","created_at":"2026-07-05T04:54:37Z"},{"alias_kind":"arxiv_version","alias_value":"2209.02092v1","created_at":"2026-07-05T04:54:37Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2209.02092","created_at":"2026-07-05T04:54:37Z"},{"alias_kind":"pith_short_12","alias_value":"BKHZVSFPFFEK","created_at":"2026-07-05T04:54:37Z"},{"alias_kind":"pith_short_16","alias_value":"BKHZVSFPFFEKUNA4","created_at":"2026-07-05T04:54:37Z"},{"alias_kind":"pith_short_8","alias_value":"BKHZVSFP","created_at":"2026-07-05T04:54:37Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2022:BKHZVSFPFFEKUNA4QHGWLMHMX6","target":"record","payload":{"canonical_record":{"source":{"id":"2209.02092","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.IM","submitted_at":"2022-09-05T18:30:14Z","cross_cats_sorted":["astro-ph.EP"],"title_canon_sha256":"eeb9780a5102f427cffa905a84d0a8bed377aee2a486249f2b2f305232c5433d","abstract_canon_sha256":"61a88456f512ad6f6819c2a33fdd0d9eab55b6565064659d92bc331b163856d7"},"schema_version":"1.0"},"canonical_sha256":"0a8f9ac8af2948aa341c81cd65b0ecbf8b4a5f7305913a540279743f831f9423","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T04:54:37.885895Z","signature_b64":"1qLv/lQ2Az3qz0VGoW966PRywUzDHpZ2Pxu6F4HFlyCMPJ6K9UkvmcLMd1SQBKlciAe1G7l6eDEtfDjx6Ub0Bw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"0a8f9ac8af2948aa341c81cd65b0ecbf8b4a5f7305913a540279743f831f9423","last_reissued_at":"2026-07-05T04:54:37.885489Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T04:54:37.885489Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2209.02092","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T04:54:37Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"if5h8Dp3c02xF3fkqffDSZfLSY2IELGzDu3OIOYpkAxQY0z8wj2+x6Mkwa8haq8gjHuQTB8j8eS2zobM4QMGBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-05T23:16:24.958679Z"},"content_sha256":"5cf14a37f49c69183554d1d1bb2816e4a2147ea1214aad8cb43c4a12b0991854","schema_version":"1.0","event_id":"sha256:5cf14a37f49c69183554d1d1bb2816e4a2147ea1214aad8cb43c4a12b0991854"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2022:BKHZVSFPFFEKUNA4QHGWLMHMX6","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Upgrading the high contrast imaging facility SPHERE: science drivers and instrument choices","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["astro-ph.EP"],"primary_cat":"astro-ph.IM","authors_text":"A. Baruffolo, A. Bianco, A. Boccaletti, A. De Rosa, A.-M. Lagrange, A. Potier, A. Sevin, A. Vigan, A. Zanutta, B. Carry, B. Charnay, C. Bechet, C. Desgrange, C. Ginski, C. Goulas, C. Keller, C. Kulcs\\'ar, D. Gratadour, D. Maurel, D. Mesa, D. Mouillet, D. Rouan, D. Segransan, E. Cascone, E. Choquet, E. Diolaiti, E. Gendron, E. Huby, E. Lagadec, E. Pantin, E. Stadler, E. Thi\\'ebaut, F. Cantalloube, F. Cortecchia, F. Ferreira, F. M\\'enard, F. Schiavone, F. Vidal, F. Wildi, G. Chauvin, G. Malaguti, G. Morgante, H.-F. Raynaud, I. Snellen, I. Tallon-Bosc, J.-L. Beuzit, J. Mazoyer, J. Milli, L. Schreiber, L. Terenzi, M. Benisty, M. Bonnefoy, M. Feldt, M. Frangiamore, M. Langlois, M. Lombini M. Kasper, M. Loupias, M. N'Diaye, M. Tallon, P. Baudoz, P. Rabou, R. Galicher, R. Gratton, R. Landman, S. Desidera, S. Dout\\'e, S. Lagarde, S. Rochat, S. Rousseau, T. Pichon, V. Christiaens, V. De Caprio, V. D'Orazi, Y. Magnard","submitted_at":"2022-09-05T18:30:14Z","abstract_excerpt":"SPHERE+ is a proposed upgrade of the SPHERE instrument at the VLT, which is intended to boost the current performances of detection and characterization for exoplanets and disks. SPHERE+ will also serve as a demonstrator for the future planet finder (PCS) of the European ELT. The main science drivers for SPHERE+ are 1/ to access the bulk of the young giant planet population down to the snow line ($3-10$ au), to bridge the gap with complementary techniques (radial velocity, astrometry); 2/ to observe fainter and redder targets in the youngest ($1-10$\\,Myr) associations compared to those observe"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2209.02092","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2209.02092/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T04:54:37Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"qBZ18/hOXnrd7QPb/2MidgCGxid0Sid5w+vQlmsC3iEh4cdlv7vpT4zMTmnFAqg/WMXIj6LhODsEdkRhdlIdBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-05T23:16:24.959198Z"},"content_sha256":"b01d9325ae1c7df718b50525ec3a69b73acccf704116db06f8a01d036e35a2bf","schema_version":"1.0","event_id":"sha256:b01d9325ae1c7df718b50525ec3a69b73acccf704116db06f8a01d036e35a2bf"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/BKHZVSFPFFEKUNA4QHGWLMHMX6/bundle.json","state_url":"https://pith.science/pith/BKHZVSFPFFEKUNA4QHGWLMHMX6/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/BKHZVSFPFFEKUNA4QHGWLMHMX6/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-08-05T23:16:24Z","links":{"resolver":"https://pith.science/pith/BKHZVSFPFFEKUNA4QHGWLMHMX6","bundle":"https://pith.science/pith/BKHZVSFPFFEKUNA4QHGWLMHMX6/bundle.json","state":"https://pith.science/pith/BKHZVSFPFFEKUNA4QHGWLMHMX6/state.json","well_known_bundle":"https://pith.science/.well-known/pith/BKHZVSFPFFEKUNA4QHGWLMHMX6/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2022:BKHZVSFPFFEKUNA4QHGWLMHMX6","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":"61a88456f512ad6f6819c2a33fdd0d9eab55b6565064659d92bc331b163856d7","cross_cats_sorted":["astro-ph.EP"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.IM","submitted_at":"2022-09-05T18:30:14Z","title_canon_sha256":"eeb9780a5102f427cffa905a84d0a8bed377aee2a486249f2b2f305232c5433d"},"schema_version":"1.0","source":{"id":"2209.02092","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2209.02092","created_at":"2026-07-05T04:54:37Z"},{"alias_kind":"arxiv_version","alias_value":"2209.02092v1","created_at":"2026-07-05T04:54:37Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2209.02092","created_at":"2026-07-05T04:54:37Z"},{"alias_kind":"pith_short_12","alias_value":"BKHZVSFPFFEK","created_at":"2026-07-05T04:54:37Z"},{"alias_kind":"pith_short_16","alias_value":"BKHZVSFPFFEKUNA4","created_at":"2026-07-05T04:54:37Z"},{"alias_kind":"pith_short_8","alias_value":"BKHZVSFP","created_at":"2026-07-05T04:54:37Z"}],"graph_snapshots":[{"event_id":"sha256:b01d9325ae1c7df718b50525ec3a69b73acccf704116db06f8a01d036e35a2bf","target":"graph","created_at":"2026-07-05T04:54:37Z","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/2209.02092/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"SPHERE+ is a proposed upgrade of the SPHERE instrument at the VLT, which is intended to boost the current performances of detection and characterization for exoplanets and disks. SPHERE+ will also serve as a demonstrator for the future planet finder (PCS) of the European ELT. The main science drivers for SPHERE+ are 1/ to access the bulk of the young giant planet population down to the snow line ($3-10$ au), to bridge the gap with complementary techniques (radial velocity, astrometry); 2/ to observe fainter and redder targets in the youngest ($1-10$\\,Myr) associations compared to those observe","authors_text":"A. Baruffolo, A. Bianco, A. Boccaletti, A. De Rosa, A.-M. Lagrange, A. Potier, A. Sevin, A. Vigan, A. Zanutta, B. Carry, B. Charnay, C. Bechet, C. Desgrange, C. Ginski, C. Goulas, C. Keller, C. Kulcs\\'ar, D. Gratadour, D. Maurel, D. Mesa, D. Mouillet, D. Rouan, D. Segransan, E. Cascone, E. Choquet, E. Diolaiti, E. Gendron, E. Huby, E. Lagadec, E. Pantin, E. Stadler, E. Thi\\'ebaut, F. Cantalloube, F. Cortecchia, F. Ferreira, F. M\\'enard, F. Schiavone, F. Vidal, F. Wildi, G. Chauvin, G. Malaguti, G. Morgante, H.-F. Raynaud, I. Snellen, I. Tallon-Bosc, J.-L. Beuzit, J. Mazoyer, J. Milli, L. Schreiber, L. Terenzi, M. Benisty, M. Bonnefoy, M. Feldt, M. Frangiamore, M. Langlois, M. Lombini M. Kasper, M. Loupias, M. N'Diaye, M. Tallon, P. Baudoz, P. Rabou, R. Galicher, R. Gratton, R. Landman, S. Desidera, S. Dout\\'e, S. Lagarde, S. Rochat, S. Rousseau, T. Pichon, V. Christiaens, V. De Caprio, V. D'Orazi, Y. Magnard","cross_cats":["astro-ph.EP"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.IM","submitted_at":"2022-09-05T18:30:14Z","title":"Upgrading the high contrast imaging facility SPHERE: science drivers and instrument choices"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2209.02092","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":"sha256:5cf14a37f49c69183554d1d1bb2816e4a2147ea1214aad8cb43c4a12b0991854","target":"record","created_at":"2026-07-05T04:54:37Z","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":"61a88456f512ad6f6819c2a33fdd0d9eab55b6565064659d92bc331b163856d7","cross_cats_sorted":["astro-ph.EP"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.IM","submitted_at":"2022-09-05T18:30:14Z","title_canon_sha256":"eeb9780a5102f427cffa905a84d0a8bed377aee2a486249f2b2f305232c5433d"},"schema_version":"1.0","source":{"id":"2209.02092","kind":"arxiv","version":1}},"canonical_sha256":"0a8f9ac8af2948aa341c81cd65b0ecbf8b4a5f7305913a540279743f831f9423","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"0a8f9ac8af2948aa341c81cd65b0ecbf8b4a5f7305913a540279743f831f9423","first_computed_at":"2026-07-05T04:54:37.885489Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T04:54:37.885489Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"1qLv/lQ2Az3qz0VGoW966PRywUzDHpZ2Pxu6F4HFlyCMPJ6K9UkvmcLMd1SQBKlciAe1G7l6eDEtfDjx6Ub0Bw==","signature_status":"signed_v1","signed_at":"2026-07-05T04:54:37.885895Z","signed_message":"canonical_sha256_bytes"},"source_id":"2209.02092","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:5cf14a37f49c69183554d1d1bb2816e4a2147ea1214aad8cb43c4a12b0991854","sha256:b01d9325ae1c7df718b50525ec3a69b73acccf704116db06f8a01d036e35a2bf"],"state_sha256":"7ad4c8813c6fe5551562a5435c58e1a3924181099d261e0a57382986b0b9be51"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"tWihFN4AwIonSmfZi34d+6QRD9KPPW7OPZbJ246pmTiLHmKZCFm+yDcG9RhXvpht5+tjD9H1J8kHcLgoxdg+BA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-05T23:16:24.964563Z","bundle_sha256":"2a665d652c1f3c9192b742b5c5d1afed0ff47f97fd32bbbcfad314242b8e51fe"}}