{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:4EKXS4WEYK3JXIPQRR33GCP5ON","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":"b271bb06f408a5248f53a9da0cd4144fa8c1f538964e16be4d84d2e30719ac2d","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2016-08-16T14:23:47Z","title_canon_sha256":"0bd57bbe5009f6b69309f72b38be9c05fb1273f8f32cc374ec479981775c5c83"},"schema_version":"1.0","source":{"id":"1608.04611","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1608.04611","created_at":"2026-05-18T01:08:36Z"},{"alias_kind":"arxiv_version","alias_value":"1608.04611v1","created_at":"2026-05-18T01:08:36Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1608.04611","created_at":"2026-05-18T01:08:36Z"},{"alias_kind":"pith_short_12","alias_value":"4EKXS4WEYK3J","created_at":"2026-05-18T12:29:58Z"},{"alias_kind":"pith_short_16","alias_value":"4EKXS4WEYK3JXIPQ","created_at":"2026-05-18T12:29:58Z"},{"alias_kind":"pith_short_8","alias_value":"4EKXS4WE","created_at":"2026-05-18T12:29:58Z"}],"graph_snapshots":[{"event_id":"sha256:c3a26db4c1460bd9160e8a513ee31aeb6725eaded5d7c9578fa0d397b6506335","target":"graph","created_at":"2026-05-18T01:08:36Z","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":"We present a description of a new instrument development, HARPS3, planned to be installed on an upgraded and roboticized Isaac Newton Telescope by end-2018. HARPS3 will be a high resolution (R = 115,000) echelle spectrograph with a wavelength range from 380-690 nm. It is being built as part of the Terra Hunting Experiment - a future 10 year radial velocity measurement programme to discover Earth-like exoplanets. The instrument design is based on the successful HARPS spectrograph on the 3.6m ESO telescope and HARPS-N on the TNG telescope. The main changes to the design in HARPS3 will be: a cust","authors_text":"Andrey Dolgopolov, Damien Segransan, David Sing, Didier Queloz, Eric Stempels, Eugene Seneta, Francesco Pepe, Frans Snik, Ignas Snellen, Isabelle Baraffe, Jan Kragt, John Young, Jonay I. Gonzalez Hernandez, Joost Geelhoed, Julien Spronck, Louis Sander, Martin Fisher, Martyn Brake, Michel Fleury, Nikolai Piskunov, Rafael Rebolo, Ramon Navarro, Richard Hall, Rik ter Horst, Samantha J. Thompson, Samuel Santana Tschudi, Tim Naylor, Xiaowei Sun","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2016-08-16T14:23:47Z","title":"HARPS3 for a Roboticized Isaac Newton Telescope"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1608.04611","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:b44fcdcf2a313b83de046872784868e4a3eb15caa7f21c22bdba310e6b87e13d","target":"record","created_at":"2026-05-18T01:08:36Z","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":"b271bb06f408a5248f53a9da0cd4144fa8c1f538964e16be4d84d2e30719ac2d","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2016-08-16T14:23:47Z","title_canon_sha256":"0bd57bbe5009f6b69309f72b38be9c05fb1273f8f32cc374ec479981775c5c83"},"schema_version":"1.0","source":{"id":"1608.04611","kind":"arxiv","version":1}},"canonical_sha256":"e1157972c4c2b69ba1f08c77b309fd7358ad6a79cb5190f3d338fa58d0cecf80","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"e1157972c4c2b69ba1f08c77b309fd7358ad6a79cb5190f3d338fa58d0cecf80","first_computed_at":"2026-05-18T01:08:36.740478Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:08:36.740478Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"W1YA+6BHg1Dd8dgBL3LaISwSxNCm9e5Scg53An89Kb6yV9uhnqRo65TvrhUDtwk27lqkwehN09dG3l7EiFgjDA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:08:36.740999Z","signed_message":"canonical_sha256_bytes"},"source_id":"1608.04611","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:b44fcdcf2a313b83de046872784868e4a3eb15caa7f21c22bdba310e6b87e13d","sha256:c3a26db4c1460bd9160e8a513ee31aeb6725eaded5d7c9578fa0d397b6506335"],"state_sha256":"fe4e01a9c3ca687440e04c93c11797251d12bde521f801c533315dab45c84d36"}