{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2022:C52BJF6VQM4C7AFX2X4O2HACNJ","short_pith_number":"pith:C52BJF6V","canonical_record":{"source":{"id":"2209.11602","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.IM","submitted_at":"2022-09-23T14:15:14Z","cross_cats_sorted":[],"title_canon_sha256":"6abd8b61054ee4a9d6ce5225d807d1eaf47536da71f016796f51c99e5b6c451b","abstract_canon_sha256":"dd05fcf61539437e06bba2a02f35e49f3a7ed8ef6952401efddf96afcdf9bfc9"},"schema_version":"1.0"},"canonical_sha256":"17741497d583382f80b7d5f8ed1c026a471789dab4b426402b6a1c73ec939726","source":{"kind":"arxiv","id":"2209.11602","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2209.11602","created_at":"2026-07-05T05:00:23Z"},{"alias_kind":"arxiv_version","alias_value":"2209.11602v1","created_at":"2026-07-05T05:00:23Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2209.11602","created_at":"2026-07-05T05:00:23Z"},{"alias_kind":"pith_short_12","alias_value":"C52BJF6VQM4C","created_at":"2026-07-05T05:00:23Z"},{"alias_kind":"pith_short_16","alias_value":"C52BJF6VQM4C7AFX","created_at":"2026-07-05T05:00:23Z"},{"alias_kind":"pith_short_8","alias_value":"C52BJF6V","created_at":"2026-07-05T05:00:23Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2022:C52BJF6VQM4C7AFX2X4O2HACNJ","target":"record","payload":{"canonical_record":{"source":{"id":"2209.11602","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.IM","submitted_at":"2022-09-23T14:15:14Z","cross_cats_sorted":[],"title_canon_sha256":"6abd8b61054ee4a9d6ce5225d807d1eaf47536da71f016796f51c99e5b6c451b","abstract_canon_sha256":"dd05fcf61539437e06bba2a02f35e49f3a7ed8ef6952401efddf96afcdf9bfc9"},"schema_version":"1.0"},"canonical_sha256":"17741497d583382f80b7d5f8ed1c026a471789dab4b426402b6a1c73ec939726","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T05:00:23.409033Z","signature_b64":"FuZcRuWzDPXHZXM53KKCNkWMdgV3W/OPhxxrrG1HbegYh6BTWyQqk1gYyRGMz1uGAgBl/dEh8l+xhau6bsddDg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"17741497d583382f80b7d5f8ed1c026a471789dab4b426402b6a1c73ec939726","last_reissued_at":"2026-07-05T05:00:23.408609Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T05:00:23.408609Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2209.11602","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":"2026-07-05T05:00:23Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"eBuSiBG9RXslghuq1aB9Y3FBk9+6vtwctQ3K8LBvyVNFYG5tSHaCqZ+2wZiqnLhReogpEIJRjCNOrpC0BwNICA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-06T12:14:46.839409Z"},"content_sha256":"6917dc0a6e07a03f9ffdc56f31f4e9705072c0a061438ce6deae321fc90e4346","schema_version":"1.0","event_id":"sha256:6917dc0a6e07a03f9ffdc56f31f4e9705072c0a061438ce6deae321fc90e4346"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2022:C52BJF6VQM4C7AFX2X4O2HACNJ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"GRAVITY+ Wide: Towards hundreds of z $\\sim$ 2 AGN","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.IM","authors_text":"A. Drescher, C. Rau, C. Straubmeier, D. Defr\\`ere, D. Lutz, E. Wieprecht, F. Eisenhauer, F. Gont\\'e, F. Haussmann, F. Widmann, G. Bourdarot, G. Perrin, H. Feuchtgruber, J.-B. Le Bouquin, J. Sauter, J. Shangguan, J. Woillez, K. Perraut, L. Kreidberg, L. Wimmer, M. Fabricius, M. Hartl, M. Horrobin, N. More, N. Schuhler, P. Bourget, P. Garcia, P. Wessely, R. Genzel, S. Gillessen, S. H\\\"onig, S. Uysal, S. Yazici (for the GRAVITY+ Collaboration), T. Ott, T. Paumard, T. Shimizu, W. Brandner","submitted_at":"2022-09-23T14:15:14Z","abstract_excerpt":"As part of the GRAVITY$^{+}$ project, the near-infrared beam combiner GRAVITY and the VLTI are currently undergoing a series of significant upgrades to further improve the performance and sky coverage. The instrumental changes will be transformational, and for instance uniquely position GRAVITY to observe the broad line region of hundreds of Active Galactic Nuclei (AGN) at a redshift of two and higher. The increased sky coverage is achieved by enlarging the maximum angular separation between the celestial science object (SC) and the off-axis fringe tracking (FT) star from currently 2 arcsecond"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2209.11602","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/2209.11602/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":"2026-07-05T05:00:23Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"1uPd338neo6iYGgYjQROa1myWeLjSiLNC9IoRu9V36F0F9jgtv+FXPX6FcToVoF0yQm5Auor4rYjyT5v582MCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-06T12:14:46.839790Z"},"content_sha256":"503ee2f6d27d3c4c6478c84075cbaf44790f33864ca7c03fe0d17dbbc4dfac45","schema_version":"1.0","event_id":"sha256:503ee2f6d27d3c4c6478c84075cbaf44790f33864ca7c03fe0d17dbbc4dfac45"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/C52BJF6VQM4C7AFX2X4O2HACNJ/bundle.json","state_url":"https://pith.science/pith/C52BJF6VQM4C7AFX2X4O2HACNJ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/C52BJF6VQM4C7AFX2X4O2HACNJ/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":"2026-07-06T12:14:46Z","links":{"resolver":"https://pith.science/pith/C52BJF6VQM4C7AFX2X4O2HACNJ","bundle":"https://pith.science/pith/C52BJF6VQM4C7AFX2X4O2HACNJ/bundle.json","state":"https://pith.science/pith/C52BJF6VQM4C7AFX2X4O2HACNJ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/C52BJF6VQM4C7AFX2X4O2HACNJ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2022:C52BJF6VQM4C7AFX2X4O2HACNJ","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":"dd05fcf61539437e06bba2a02f35e49f3a7ed8ef6952401efddf96afcdf9bfc9","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.IM","submitted_at":"2022-09-23T14:15:14Z","title_canon_sha256":"6abd8b61054ee4a9d6ce5225d807d1eaf47536da71f016796f51c99e5b6c451b"},"schema_version":"1.0","source":{"id":"2209.11602","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2209.11602","created_at":"2026-07-05T05:00:23Z"},{"alias_kind":"arxiv_version","alias_value":"2209.11602v1","created_at":"2026-07-05T05:00:23Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2209.11602","created_at":"2026-07-05T05:00:23Z"},{"alias_kind":"pith_short_12","alias_value":"C52BJF6VQM4C","created_at":"2026-07-05T05:00:23Z"},{"alias_kind":"pith_short_16","alias_value":"C52BJF6VQM4C7AFX","created_at":"2026-07-05T05:00:23Z"},{"alias_kind":"pith_short_8","alias_value":"C52BJF6V","created_at":"2026-07-05T05:00:23Z"}],"graph_snapshots":[{"event_id":"sha256:503ee2f6d27d3c4c6478c84075cbaf44790f33864ca7c03fe0d17dbbc4dfac45","target":"graph","created_at":"2026-07-05T05:00:23Z","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/2209.11602/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"As part of the GRAVITY$^{+}$ project, the near-infrared beam combiner GRAVITY and the VLTI are currently undergoing a series of significant upgrades to further improve the performance and sky coverage. The instrumental changes will be transformational, and for instance uniquely position GRAVITY to observe the broad line region of hundreds of Active Galactic Nuclei (AGN) at a redshift of two and higher. The increased sky coverage is achieved by enlarging the maximum angular separation between the celestial science object (SC) and the off-axis fringe tracking (FT) star from currently 2 arcsecond","authors_text":"A. Drescher, C. Rau, C. Straubmeier, D. Defr\\`ere, D. Lutz, E. Wieprecht, F. Eisenhauer, F. Gont\\'e, F. Haussmann, F. Widmann, G. Bourdarot, G. Perrin, H. Feuchtgruber, J.-B. Le Bouquin, J. Sauter, J. Shangguan, J. Woillez, K. Perraut, L. Kreidberg, L. Wimmer, M. Fabricius, M. Hartl, M. Horrobin, N. More, N. Schuhler, P. Bourget, P. Garcia, P. Wessely, R. Genzel, S. Gillessen, S. H\\\"onig, S. Uysal, S. Yazici (for the GRAVITY+ Collaboration), T. Ott, T. Paumard, T. Shimizu, W. Brandner","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.IM","submitted_at":"2022-09-23T14:15:14Z","title":"GRAVITY+ Wide: Towards hundreds of z $\\sim$ 2 AGN"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2209.11602","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":"sha256:6917dc0a6e07a03f9ffdc56f31f4e9705072c0a061438ce6deae321fc90e4346","target":"record","created_at":"2026-07-05T05:00:23Z","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":"dd05fcf61539437e06bba2a02f35e49f3a7ed8ef6952401efddf96afcdf9bfc9","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.IM","submitted_at":"2022-09-23T14:15:14Z","title_canon_sha256":"6abd8b61054ee4a9d6ce5225d807d1eaf47536da71f016796f51c99e5b6c451b"},"schema_version":"1.0","source":{"id":"2209.11602","kind":"arxiv","version":1}},"canonical_sha256":"17741497d583382f80b7d5f8ed1c026a471789dab4b426402b6a1c73ec939726","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"17741497d583382f80b7d5f8ed1c026a471789dab4b426402b6a1c73ec939726","first_computed_at":"2026-07-05T05:00:23.408609Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T05:00:23.408609Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"FuZcRuWzDPXHZXM53KKCNkWMdgV3W/OPhxxrrG1HbegYh6BTWyQqk1gYyRGMz1uGAgBl/dEh8l+xhau6bsddDg==","signature_status":"signed_v1","signed_at":"2026-07-05T05:00:23.409033Z","signed_message":"canonical_sha256_bytes"},"source_id":"2209.11602","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:6917dc0a6e07a03f9ffdc56f31f4e9705072c0a061438ce6deae321fc90e4346","sha256:503ee2f6d27d3c4c6478c84075cbaf44790f33864ca7c03fe0d17dbbc4dfac45"],"state_sha256":"0bcbbc82e409aeea1f8e53109f182d7da4264440e9067db3482f3c2556b3d10c"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"KLPWmAfCaSiOLu9AlFhrF/T0zCTye4Muu9E1GRwC39We6HCUaHD0V7r3mwOxCOkEjWeOStdpZLmTCH2qHpezBw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-06T12:14:46.841899Z","bundle_sha256":"07e18faca9d15703e5cd9c4e2cdd15ebdbd2e591c3f2b85b9f318be3396043be"}}