{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2014:ZCBBVBMVJ72A3XFKGO4KIIFZPN","short_pith_number":"pith:ZCBBVBMV","schema_version":"1.0","canonical_sha256":"c8821a85954ff40ddcaa33b8a420b97b6f7adb1b5538d1a5676c5ff1a4420012","source":{"kind":"arxiv","id":"1410.2571","version":3},"attestation_state":"computed","paper":{"title":"PRISM: Recovery of the primordial spectrum from Planck data","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"A. Rassat, F. Lanusse, F. Sureau, J. Bobin, J.-L. Starck, P. Paykari","submitted_at":"2014-10-09T18:50:36Z","abstract_excerpt":"The primordial power spectrum describes the initial perturbations that seeded the large-scale structure we observe today. It provides an indirect probe of inflation or other structure-formation mechanisms. In this letter, we recover the primordial power spectrum from the Planck PR1 dataset, using our recently published algorithm PRISM. PRISM is a sparsity-based inversion method, that aims at recovering features in the primordial power spectrum from the empirical power spectrum of the cosmic microwave background (CMB). This ill-posed inverse problem is regularised using a sparsity prior on feat"},"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":"1410.2571","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2014-10-09T18:50:36Z","cross_cats_sorted":[],"title_canon_sha256":"201bc34b97b65ab3079ba59ccd9fea04ccd8bbd86fc2d703c3c8c229d6a15f4e","abstract_canon_sha256":"8cda44eb0a951774369e38dfc224a48f44c651cecb79aeda248d78f6fb1e688c"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:38:38.558871Z","signature_b64":"2+XvGTV05D2JaAXOxVZN4kN8YGU/RTTOf3Hr3K4/d82ms3RdjjbJydAU8wnxC1P55OJOQIfNC2cFoGXVeu1XDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"c8821a85954ff40ddcaa33b8a420b97b6f7adb1b5538d1a5676c5ff1a4420012","last_reissued_at":"2026-05-18T02:38:38.558506Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:38:38.558506Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"PRISM: Recovery of the primordial spectrum from Planck data","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"A. Rassat, F. Lanusse, F. Sureau, J. Bobin, J.-L. Starck, P. Paykari","submitted_at":"2014-10-09T18:50:36Z","abstract_excerpt":"The primordial power spectrum describes the initial perturbations that seeded the large-scale structure we observe today. It provides an indirect probe of inflation or other structure-formation mechanisms. In this letter, we recover the primordial power spectrum from the Planck PR1 dataset, using our recently published algorithm PRISM. PRISM is a sparsity-based inversion method, that aims at recovering features in the primordial power spectrum from the empirical power spectrum of the cosmic microwave background (CMB). This ill-posed inverse problem is regularised using a sparsity prior on feat"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1410.2571","kind":"arxiv","version":3},"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":"1410.2571","created_at":"2026-05-18T02:38:38.558560+00:00"},{"alias_kind":"arxiv_version","alias_value":"1410.2571v3","created_at":"2026-05-18T02:38:38.558560+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1410.2571","created_at":"2026-05-18T02:38:38.558560+00:00"},{"alias_kind":"pith_short_12","alias_value":"ZCBBVBMVJ72A","created_at":"2026-05-18T12:28:59.999130+00:00"},{"alias_kind":"pith_short_16","alias_value":"ZCBBVBMVJ72A3XFK","created_at":"2026-05-18T12:28:59.999130+00:00"},{"alias_kind":"pith_short_8","alias_value":"ZCBBVBMV","created_at":"2026-05-18T12:28:59.999130+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/ZCBBVBMVJ72A3XFKGO4KIIFZPN","json":"https://pith.science/pith/ZCBBVBMVJ72A3XFKGO4KIIFZPN.json","graph_json":"https://pith.science/api/pith-number/ZCBBVBMVJ72A3XFKGO4KIIFZPN/graph.json","events_json":"https://pith.science/api/pith-number/ZCBBVBMVJ72A3XFKGO4KIIFZPN/events.json","paper":"https://pith.science/paper/ZCBBVBMV"},"agent_actions":{"view_html":"https://pith.science/pith/ZCBBVBMVJ72A3XFKGO4KIIFZPN","download_json":"https://pith.science/pith/ZCBBVBMVJ72A3XFKGO4KIIFZPN.json","view_paper":"https://pith.science/paper/ZCBBVBMV","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1410.2571&json=true","fetch_graph":"https://pith.science/api/pith-number/ZCBBVBMVJ72A3XFKGO4KIIFZPN/graph.json","fetch_events":"https://pith.science/api/pith-number/ZCBBVBMVJ72A3XFKGO4KIIFZPN/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/ZCBBVBMVJ72A3XFKGO4KIIFZPN/action/timestamp_anchor","attest_storage":"https://pith.science/pith/ZCBBVBMVJ72A3XFKGO4KIIFZPN/action/storage_attestation","attest_author":"https://pith.science/pith/ZCBBVBMVJ72A3XFKGO4KIIFZPN/action/author_attestation","sign_citation":"https://pith.science/pith/ZCBBVBMVJ72A3XFKGO4KIIFZPN/action/citation_signature","submit_replication":"https://pith.science/pith/ZCBBVBMVJ72A3XFKGO4KIIFZPN/action/replication_record"}},"created_at":"2026-05-18T02:38:38.558560+00:00","updated_at":"2026-05-18T02:38:38.558560+00:00"}