{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2016:UFUUYPQNKDJOWPASA6FSZU6A4N","short_pith_number":"pith:UFUUYPQN","canonical_record":{"source":{"id":"1605.06637","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2016-05-21T12:59:53Z","cross_cats_sorted":[],"title_canon_sha256":"71654eb6ce8c36b3162c48591b8ba949ebf20dd6c57ef3314473119a52646340","abstract_canon_sha256":"e8df680ed40e421ed211f7877146a5c0fdb807f8febd652fbbfe7aaf0a8fae49"},"schema_version":"1.0"},"canonical_sha256":"a1694c3e0d50d2eb3c12078b2cd3c0e34f8f30f71aa393c92350e832c8db668b","source":{"kind":"arxiv","id":"1605.06637","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1605.06637","created_at":"2026-05-18T01:08:16Z"},{"alias_kind":"arxiv_version","alias_value":"1605.06637v1","created_at":"2026-05-18T01:08:16Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1605.06637","created_at":"2026-05-18T01:08:16Z"},{"alias_kind":"pith_short_12","alias_value":"UFUUYPQNKDJO","created_at":"2026-05-18T12:30:46Z"},{"alias_kind":"pith_short_16","alias_value":"UFUUYPQNKDJOWPAS","created_at":"2026-05-18T12:30:46Z"},{"alias_kind":"pith_short_8","alias_value":"UFUUYPQN","created_at":"2026-05-18T12:30:46Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2016:UFUUYPQNKDJOWPASA6FSZU6A4N","target":"record","payload":{"canonical_record":{"source":{"id":"1605.06637","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2016-05-21T12:59:53Z","cross_cats_sorted":[],"title_canon_sha256":"71654eb6ce8c36b3162c48591b8ba949ebf20dd6c57ef3314473119a52646340","abstract_canon_sha256":"e8df680ed40e421ed211f7877146a5c0fdb807f8febd652fbbfe7aaf0a8fae49"},"schema_version":"1.0"},"canonical_sha256":"a1694c3e0d50d2eb3c12078b2cd3c0e34f8f30f71aa393c92350e832c8db668b","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:08:16.948490Z","signature_b64":"S+8sgdmQ3lREObrx3v9plUm/2GuvRdvv+8wdfIdkd5XJDQoPpIc4YIwXaeFyV4ZVanvSXqino9H+o/qcxnAzAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"a1694c3e0d50d2eb3c12078b2cd3c0e34f8f30f71aa393c92350e832c8db668b","last_reissued_at":"2026-05-18T01:08:16.947764Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:08:16.947764Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1605.06637","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T01:08:16Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ioH2jbAXtsdNVmFC1tKRtEen0scak4/yxOBhjDDglxFB3peMG+kWhjpIstdLKZ7hfLQs9kUrWjzfI8LDrT3KDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-21T18:55:03.461784Z"},"content_sha256":"235695c6da074ed3d6330d7f3b6c3926ea997c28c4661c9c69c26f38f527b912","schema_version":"1.0","event_id":"sha256:235695c6da074ed3d6330d7f3b6c3926ea997c28c4661c9c69c26f38f527b912"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2016:UFUUYPQNKDJOWPASA6FSZU6A4N","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Red, Straight, no bends: primordial power spectrum reconstruction from CMB and large-scale structure","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"Andrea Ravenni, Antonio J. Cuesta, Licia Verde","submitted_at":"2016-05-21T12:59:53Z","abstract_excerpt":"We present a minimally parametric, model independent reconstruction of the shape of the primordial power spectrum. Our smoothing spline technique is well-suited to search for smooth features such as deviations from scale invariance, and deviations from a power law such as running of the spectral index or small-scale power suppression. We use a comprehensive set of the state-of the art cosmological data: {\\it Planck} observations of the temperature and polarisation anisotropies of the cosmic microwave background, WiggleZ and Sloan Digital Sky Survey Data Release 7 galaxy power spectra and the C"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1605.06637","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"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T01:08:16Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"/09202C26fV1TOcgBhq9EdoHM4BW+SckRku7mnUfKEVrSXfQ0vEYfyCr9JesnUQiIo26h2ATQRCN2frl11ikCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-21T18:55:03.462165Z"},"content_sha256":"13238f008dd8f305316ab21241b5b785fcf6e25ac1026106afa90d8db76d8b1e","schema_version":"1.0","event_id":"sha256:13238f008dd8f305316ab21241b5b785fcf6e25ac1026106afa90d8db76d8b1e"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/UFUUYPQNKDJOWPASA6FSZU6A4N/bundle.json","state_url":"https://pith.science/pith/UFUUYPQNKDJOWPASA6FSZU6A4N/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/UFUUYPQNKDJOWPASA6FSZU6A4N/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-05-21T18:55:03Z","links":{"resolver":"https://pith.science/pith/UFUUYPQNKDJOWPASA6FSZU6A4N","bundle":"https://pith.science/pith/UFUUYPQNKDJOWPASA6FSZU6A4N/bundle.json","state":"https://pith.science/pith/UFUUYPQNKDJOWPASA6FSZU6A4N/state.json","well_known_bundle":"https://pith.science/.well-known/pith/UFUUYPQNKDJOWPASA6FSZU6A4N/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:UFUUYPQNKDJOWPASA6FSZU6A4N","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":"e8df680ed40e421ed211f7877146a5c0fdb807f8febd652fbbfe7aaf0a8fae49","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2016-05-21T12:59:53Z","title_canon_sha256":"71654eb6ce8c36b3162c48591b8ba949ebf20dd6c57ef3314473119a52646340"},"schema_version":"1.0","source":{"id":"1605.06637","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1605.06637","created_at":"2026-05-18T01:08:16Z"},{"alias_kind":"arxiv_version","alias_value":"1605.06637v1","created_at":"2026-05-18T01:08:16Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1605.06637","created_at":"2026-05-18T01:08:16Z"},{"alias_kind":"pith_short_12","alias_value":"UFUUYPQNKDJO","created_at":"2026-05-18T12:30:46Z"},{"alias_kind":"pith_short_16","alias_value":"UFUUYPQNKDJOWPAS","created_at":"2026-05-18T12:30:46Z"},{"alias_kind":"pith_short_8","alias_value":"UFUUYPQN","created_at":"2026-05-18T12:30:46Z"}],"graph_snapshots":[{"event_id":"sha256:13238f008dd8f305316ab21241b5b785fcf6e25ac1026106afa90d8db76d8b1e","target":"graph","created_at":"2026-05-18T01:08:16Z","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 minimally parametric, model independent reconstruction of the shape of the primordial power spectrum. Our smoothing spline technique is well-suited to search for smooth features such as deviations from scale invariance, and deviations from a power law such as running of the spectral index or small-scale power suppression. We use a comprehensive set of the state-of the art cosmological data: {\\it Planck} observations of the temperature and polarisation anisotropies of the cosmic microwave background, WiggleZ and Sloan Digital Sky Survey Data Release 7 galaxy power spectra and the C","authors_text":"Andrea Ravenni, Antonio J. Cuesta, Licia Verde","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2016-05-21T12:59:53Z","title":"Red, Straight, no bends: primordial power spectrum reconstruction from CMB and large-scale structure"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1605.06637","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":"sha256:235695c6da074ed3d6330d7f3b6c3926ea997c28c4661c9c69c26f38f527b912","target":"record","created_at":"2026-05-18T01:08:16Z","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":"e8df680ed40e421ed211f7877146a5c0fdb807f8febd652fbbfe7aaf0a8fae49","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2016-05-21T12:59:53Z","title_canon_sha256":"71654eb6ce8c36b3162c48591b8ba949ebf20dd6c57ef3314473119a52646340"},"schema_version":"1.0","source":{"id":"1605.06637","kind":"arxiv","version":1}},"canonical_sha256":"a1694c3e0d50d2eb3c12078b2cd3c0e34f8f30f71aa393c92350e832c8db668b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"a1694c3e0d50d2eb3c12078b2cd3c0e34f8f30f71aa393c92350e832c8db668b","first_computed_at":"2026-05-18T01:08:16.947764Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:08:16.947764Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"S+8sgdmQ3lREObrx3v9plUm/2GuvRdvv+8wdfIdkd5XJDQoPpIc4YIwXaeFyV4ZVanvSXqino9H+o/qcxnAzAQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:08:16.948490Z","signed_message":"canonical_sha256_bytes"},"source_id":"1605.06637","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:235695c6da074ed3d6330d7f3b6c3926ea997c28c4661c9c69c26f38f527b912","sha256:13238f008dd8f305316ab21241b5b785fcf6e25ac1026106afa90d8db76d8b1e"],"state_sha256":"f422edbc6ba1f51e969d37da549bed30005512a8b8efbf9ae830d4b1a07d493e"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"azWcgFZdM8ZvsTFMSSqC/PHbmzsZwSMUnCOR04crxlulcKZoM6vgLwc+a+UFKB+f1DhSuVB8/Hq2AV4HE0ocAQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-21T18:55:03.464930Z","bundle_sha256":"5673d2a0e9dddb482ec44c209d0064ee2bb0070a6fd6e1d4a7d2732380094ae1"}}