{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:NDW5HW6GTYX7O7MYZP3WK3RO3M","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":"d7c09936003a332a928a5047a0fe527ad53e8e2e003efe87b20386720f176bb7","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2019-03-05T17:28:06Z","title_canon_sha256":"a1360ed741e4d2632587ff2046104d42e008eb5cde9731322a633deacb5115e7"},"schema_version":"1.0","source":{"id":"1903.01942","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1903.01942","created_at":"2026-05-17T23:47:57Z"},{"alias_kind":"arxiv_version","alias_value":"1903.01942v1","created_at":"2026-05-17T23:47:57Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1903.01942","created_at":"2026-05-17T23:47:57Z"},{"alias_kind":"pith_short_12","alias_value":"NDW5HW6GTYX7","created_at":"2026-05-18T12:33:24Z"},{"alias_kind":"pith_short_16","alias_value":"NDW5HW6GTYX7O7MY","created_at":"2026-05-18T12:33:24Z"},{"alias_kind":"pith_short_8","alias_value":"NDW5HW6G","created_at":"2026-05-18T12:33:24Z"}],"graph_snapshots":[{"event_id":"sha256:6c51b9c2a92b0ab42d631c9f59216b4a585663f02aecae2e9e1c36ea4eaab0f4","target":"graph","created_at":"2026-05-17T23:47:57Z","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 study of Earth-mass extrasolar planets via the radial-velocity technique and the measurement of the potential cosmological variability of fundamental constants call for very-high-precision spectroscopy at the level of $\\updelta\\lambda/\\lambda<10^{-9}$. Wavelength accuracy is obtained by providing two fundamental ingredients: 1) an absolute and information-rich wavelength source and 2) the ability of the spectrograph and its data reduction of transferring the reference scale (wavelengths) to a measurement scale (detector pixels) in a repeatable manner. The goal of this work is to improve th","authors_text":"A. Coffinet, B. Chazelas, C. Lovis, F. Cersullo, F. Pepe","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2019-03-05T17:28:06Z","title":"A new wavelength calibration for echelle spectrographs using Fabry-Perot etalons"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1903.01942","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":"sha256:084ab9ab87f57efdd7e5f1f6c9c1986139004a9e5413f8c417b7b726302acd8a","target":"record","created_at":"2026-05-17T23:47:57Z","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":"d7c09936003a332a928a5047a0fe527ad53e8e2e003efe87b20386720f176bb7","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2019-03-05T17:28:06Z","title_canon_sha256":"a1360ed741e4d2632587ff2046104d42e008eb5cde9731322a633deacb5115e7"},"schema_version":"1.0","source":{"id":"1903.01942","kind":"arxiv","version":1}},"canonical_sha256":"68edd3dbc69e2ff77d98cbf7656e2edb0deeb8e72587a8aeafc87827e2289113","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"68edd3dbc69e2ff77d98cbf7656e2edb0deeb8e72587a8aeafc87827e2289113","first_computed_at":"2026-05-17T23:47:57.868504Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:47:57.868504Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"1F1wW158p5Ne2O3L3a3uuSHy2Nx3o4lN2Svz/q8pCigI6jO7Ml451pojS1dJnfaUEKJvrLVFHMt8j1punREMAw==","signature_status":"signed_v1","signed_at":"2026-05-17T23:47:57.868991Z","signed_message":"canonical_sha256_bytes"},"source_id":"1903.01942","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:084ab9ab87f57efdd7e5f1f6c9c1986139004a9e5413f8c417b7b726302acd8a","sha256:6c51b9c2a92b0ab42d631c9f59216b4a585663f02aecae2e9e1c36ea4eaab0f4"],"state_sha256":"46d7a1bb361a7a665a9993adfa8aceba166c19556a8e78781f5160bfe8c398b2"}