{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2019:JTGEUXYM2PNMGTBNK5HCCCN2HT","short_pith_number":"pith:JTGEUXYM","schema_version":"1.0","canonical_sha256":"4ccc4a5f0cd3dac34c2d574e2109ba3cda2a50fdd89e359a2c39c6b7b2093048","source":{"kind":"arxiv","id":"1901.01581","version":1},"attestation_state":"computed","paper":{"title":"Unraveling the Universe with DESI","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.GA"],"primary_cat":"astro-ph.IM","authors_text":"David D. Brooks, Gregory G. Tarle (on behalf of DESI collaboration), Mariana Vargas-Magana, Michael M. Levi","submitted_at":"2019-01-06T17:53:58Z","abstract_excerpt":"The Dark Energy Spectroscopic Instrument (DESI) is a stage IV ground-based dark energy experiment planned to begin operations in 2020. In this article, we provided a short review of DESI presented during the conference {\\it Recontres de Moriond 2018}. DESI will use four different tracers for mapping the universe: from redshift 0.05 up to redshift 1.7 with galaxies and from 2.1 to 3.5 using quasars. DESI will measure a total of 35 million spectra covering regions of universe never explored before, providing a map of large scale structure that will enable major advances in the investigation of c"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"1901.01581","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2019-01-06T17:53:58Z","cross_cats_sorted":["astro-ph.GA"],"title_canon_sha256":"ecbf0eb58664aee3d93ce9b6c5ee1a423b6a7d39cd4459342fc2bb761243ec54","abstract_canon_sha256":"7266bf9619fbba06c135a16cd019692a255c946a4708767ed110c20d18e07bf9"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:56:51.672207Z","signature_b64":"3t69d32NkjIo7WH2lBwnRKWZUZ5H3Rf5Jufvh0t4n5miAbO3wDW4jQ0lokqBrJGswNA0bbVOE5Ebv6DmlFuiDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"4ccc4a5f0cd3dac34c2d574e2109ba3cda2a50fdd89e359a2c39c6b7b2093048","last_reissued_at":"2026-05-17T23:56:51.671710Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:56:51.671710Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Unraveling the Universe with DESI","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.GA"],"primary_cat":"astro-ph.IM","authors_text":"David D. Brooks, Gregory G. Tarle (on behalf of DESI collaboration), Mariana Vargas-Magana, Michael M. Levi","submitted_at":"2019-01-06T17:53:58Z","abstract_excerpt":"The Dark Energy Spectroscopic Instrument (DESI) is a stage IV ground-based dark energy experiment planned to begin operations in 2020. In this article, we provided a short review of DESI presented during the conference {\\it Recontres de Moriond 2018}. DESI will use four different tracers for mapping the universe: from redshift 0.05 up to redshift 1.7 with galaxies and from 2.1 to 3.5 using quasars. DESI will measure a total of 35 million spectra covering regions of universe never explored before, providing a map of large scale structure that will enable major advances in the investigation of c"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1901.01581","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":""},"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"},"aliases":[{"alias_kind":"arxiv","alias_value":"1901.01581","created_at":"2026-05-17T23:56:51.671785+00:00"},{"alias_kind":"arxiv_version","alias_value":"1901.01581v1","created_at":"2026-05-17T23:56:51.671785+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1901.01581","created_at":"2026-05-17T23:56:51.671785+00:00"},{"alias_kind":"pith_short_12","alias_value":"JTGEUXYM2PNM","created_at":"2026-05-18T12:33:21.387695+00:00"},{"alias_kind":"pith_short_16","alias_value":"JTGEUXYM2PNMGTBN","created_at":"2026-05-18T12:33:21.387695+00:00"},{"alias_kind":"pith_short_8","alias_value":"JTGEUXYM","created_at":"2026-05-18T12:33:21.387695+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/JTGEUXYM2PNMGTBNK5HCCCN2HT","json":"https://pith.science/pith/JTGEUXYM2PNMGTBNK5HCCCN2HT.json","graph_json":"https://pith.science/api/pith-number/JTGEUXYM2PNMGTBNK5HCCCN2HT/graph.json","events_json":"https://pith.science/api/pith-number/JTGEUXYM2PNMGTBNK5HCCCN2HT/events.json","paper":"https://pith.science/paper/JTGEUXYM"},"agent_actions":{"view_html":"https://pith.science/pith/JTGEUXYM2PNMGTBNK5HCCCN2HT","download_json":"https://pith.science/pith/JTGEUXYM2PNMGTBNK5HCCCN2HT.json","view_paper":"https://pith.science/paper/JTGEUXYM","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1901.01581&json=true","fetch_graph":"https://pith.science/api/pith-number/JTGEUXYM2PNMGTBNK5HCCCN2HT/graph.json","fetch_events":"https://pith.science/api/pith-number/JTGEUXYM2PNMGTBNK5HCCCN2HT/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/JTGEUXYM2PNMGTBNK5HCCCN2HT/action/timestamp_anchor","attest_storage":"https://pith.science/pith/JTGEUXYM2PNMGTBNK5HCCCN2HT/action/storage_attestation","attest_author":"https://pith.science/pith/JTGEUXYM2PNMGTBNK5HCCCN2HT/action/author_attestation","sign_citation":"https://pith.science/pith/JTGEUXYM2PNMGTBNK5HCCCN2HT/action/citation_signature","submit_replication":"https://pith.science/pith/JTGEUXYM2PNMGTBNK5HCCCN2HT/action/replication_record"}},"created_at":"2026-05-17T23:56:51.671785+00:00","updated_at":"2026-05-17T23:56:51.671785+00:00"}