{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:6PKQK5UWCAMOIXEIDD2QF4LYJX","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":"4c4ea9624f15ee52e83de56ad0120e699970e0d6e263d4ef03e7a07e0b8ca73f","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2019-03-06T16:10:19Z","title_canon_sha256":"029459da145b72bb5dca616ca0b2e358f1a009374ef812f7fee70d3247199337"},"schema_version":"1.0","source":{"id":"1903.02465","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1903.02465","created_at":"2026-05-17T23:49:49Z"},{"alias_kind":"arxiv_version","alias_value":"1903.02465v2","created_at":"2026-05-17T23:49:49Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1903.02465","created_at":"2026-05-17T23:49:49Z"},{"alias_kind":"pith_short_12","alias_value":"6PKQK5UWCAMO","created_at":"2026-05-18T12:33:10Z"},{"alias_kind":"pith_short_16","alias_value":"6PKQK5UWCAMOIXEI","created_at":"2026-05-18T12:33:10Z"},{"alias_kind":"pith_short_8","alias_value":"6PKQK5UW","created_at":"2026-05-18T12:33:10Z"}],"graph_snapshots":[{"event_id":"sha256:c2cf4332cc3e562c2f28e972751d250888f574a5888745c2f8208ba61305bd11","target":"graph","created_at":"2026-05-17T23:49:49Z","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 4MOST instrument is a multi-object spectrograph that will address Galactic and extragalactic science cases simultaneously by observing targets from a large number of different surveys within each science exposure. This parallel mode of operation and the survey nature of 4MOST require some distinct 4MOST-specific operational features within the overall operations model of ESO. The main feature is that the 4MOST Consortium will deliver, not only the instrument, but also contractual services to the user community, which is why 4MOST is also described as a facility. This white paper concentrat","authors_text":"A. Casey, A. Gueguen, A. Korn, A. Merloni, A. Pramskiy, A. Schwope, A.S.G. Robotham, C. Battistini, C. Chiappini, C.C. Worley, C.J. Walcher, C.P.M. Bell, D. Feuillet, D. Ford, D. Murphy, E. Gonzalez-Solares, E. Starkenburg, E. Tempel, F. Niederhofer, F. Rothmaier, G. Kordopatis, G. Matijevic, G. Ruchti, G. Traven, G. Worseck, H. Enke, I. Kushniruk, I. Stilz, J. Brynnel, J. Comparat, J. Klar, J. Lewis, J. Liske, J. Loveday, J.M. Bestenlehner, J. Sorce, J. Storm, K. Lind, L. Howes, L.J.M. Davies, M. Banerji, M. Fouesneau, M. I Lam, M. Irwin, M. Krumpe, M.-R.L. Cioni, M. Romaniello, M. Valentini, M. van den Ancker, N. Christlieb, N. Walton, O. Bellido-Tirado, O. Schnurr, P. Norberg, R. Church, R. McMahon, R.S. de Jong, R. Winkler, S. Croom, S. Feltzing, S. Frey, S. Martell, S. Smedley, T. Bensby, T. Boller, T. Dwelly, V. Mainieri, W.-F. Thi","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2019-03-06T16:10:19Z","title":"4MOST Scientific Operations"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1903.02465","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:b82cb568b201d76d72d40d11876132af49686bbd48e654e3f565b60772f9c828","target":"record","created_at":"2026-05-17T23:49:49Z","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":"4c4ea9624f15ee52e83de56ad0120e699970e0d6e263d4ef03e7a07e0b8ca73f","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2019-03-06T16:10:19Z","title_canon_sha256":"029459da145b72bb5dca616ca0b2e358f1a009374ef812f7fee70d3247199337"},"schema_version":"1.0","source":{"id":"1903.02465","kind":"arxiv","version":2}},"canonical_sha256":"f3d50576961018e45c8818f502f1784de6a66683c198bdbaba511f14cc3e7d8a","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"f3d50576961018e45c8818f502f1784de6a66683c198bdbaba511f14cc3e7d8a","first_computed_at":"2026-05-17T23:49:49.950076Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:49:49.950076Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"lNRlwg0xTI34Mps2zGwb6HxPKQXlti5vhc1lMyB/PXDbVjbOOm2f6gcgbyOpOLZwc5ijXqDNvs66b9cDEEmnCg==","signature_status":"signed_v1","signed_at":"2026-05-17T23:49:49.950586Z","signed_message":"canonical_sha256_bytes"},"source_id":"1903.02465","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:b82cb568b201d76d72d40d11876132af49686bbd48e654e3f565b60772f9c828","sha256:c2cf4332cc3e562c2f28e972751d250888f574a5888745c2f8208ba61305bd11"],"state_sha256":"9030b157e909019407c6170795632c548b12dcd44c6ae037fc7fafe68a53065e"}