{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:6HEZUQZG33NUFLIEXW3U7HJBTO","short_pith_number":"pith:6HEZUQZG","canonical_record":{"source":{"id":"1511.07066","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2015-11-22T20:40:05Z","cross_cats_sorted":["gr-qc"],"title_canon_sha256":"b74655b310974d60a9456577be0fd7e9503188cf14f992ced6b49f11a0c3d047","abstract_canon_sha256":"07a4887cbf4b567b7ce0268c002380cccb3aaefd1b6d2943b965e16c60db4d59"},"schema_version":"1.0"},"canonical_sha256":"f1c99a4326dedb42ad04bdb74f9d219bb9eeaa3acab937e964a90bedb5dc3cdc","source":{"kind":"arxiv","id":"1511.07066","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1511.07066","created_at":"2026-05-18T00:55:14Z"},{"alias_kind":"arxiv_version","alias_value":"1511.07066v2","created_at":"2026-05-18T00:55:14Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1511.07066","created_at":"2026-05-18T00:55:14Z"},{"alias_kind":"pith_short_12","alias_value":"6HEZUQZG33NU","created_at":"2026-05-18T12:29:07Z"},{"alias_kind":"pith_short_16","alias_value":"6HEZUQZG33NUFLIE","created_at":"2026-05-18T12:29:07Z"},{"alias_kind":"pith_short_8","alias_value":"6HEZUQZG","created_at":"2026-05-18T12:29:07Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:6HEZUQZG33NUFLIEXW3U7HJBTO","target":"record","payload":{"canonical_record":{"source":{"id":"1511.07066","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2015-11-22T20:40:05Z","cross_cats_sorted":["gr-qc"],"title_canon_sha256":"b74655b310974d60a9456577be0fd7e9503188cf14f992ced6b49f11a0c3d047","abstract_canon_sha256":"07a4887cbf4b567b7ce0268c002380cccb3aaefd1b6d2943b965e16c60db4d59"},"schema_version":"1.0"},"canonical_sha256":"f1c99a4326dedb42ad04bdb74f9d219bb9eeaa3acab937e964a90bedb5dc3cdc","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:55:14.346838Z","signature_b64":"DtcprGSCeGDMb7TqY2erW/Rn1c5Sm7FxNDV7mgYS8ZmWQmTUxttU6hiQOZoPLMlZPzO0iNdpuJYoacmZYA8SBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"f1c99a4326dedb42ad04bdb74f9d219bb9eeaa3acab937e964a90bedb5dc3cdc","last_reissued_at":"2026-05-18T00:55:14.346389Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:55:14.346389Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1511.07066","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T00:55:14Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"MWc+cwyB4GQgWRstKLD9NoWvkMuXvp4h3ET7N//dxU9FDBW0O1pR56VBwCU51vUiXfgiTIw5v6nj2UG7Y8yMCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T23:41:50.742118Z"},"content_sha256":"0f661022e0818076e90bdf5fbdab0727940e8eff68270fdd8cfdbde5402b1076","schema_version":"1.0","event_id":"sha256:0f661022e0818076e90bdf5fbdab0727940e8eff68270fdd8cfdbde5402b1076"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:6HEZUQZG33NUFLIEXW3U7HJBTO","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Nonparametric reconstruction of the Om diagnostic to test LCDM","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["gr-qc"],"primary_cat":"astro-ph.CO","authors_text":"Celia Escamilla-Rivera, Julio C. Fabris","submitted_at":"2015-11-22T20:40:05Z","abstract_excerpt":"Cosmic acceleration is usually related with the unknown dark energy, which equation of state, w(z), is constrained and numerically confronted with independent astrophysical data. In order to make a diagnostic of w(z), the introduction of a null test of dark energy can be done using a diagnostic function of redshift, Om. In this work we present a nonparametric reconstruction of this diagnostic using the so-called Loess-Simex factory to test the concordance model with the advantage that this approach offers an alternative way to relax the use of priors and find a possible 'w' that reliably descr"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1511.07066","kind":"arxiv","version":2},"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":"2026-05-18T00:55:14Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"3mIDG4nPdTvlqgnQmNjAVi8LxuCS/oMaSdlq87jQuKmkCLAkyCHWG2LxM21npPodGBubp2Af7VG8wdpqQq2hBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T23:41:50.742784Z"},"content_sha256":"835ae52bb38ffe122153bf85dfa47266b35ae89ed2798bd97278407c002c4123","schema_version":"1.0","event_id":"sha256:835ae52bb38ffe122153bf85dfa47266b35ae89ed2798bd97278407c002c4123"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/6HEZUQZG33NUFLIEXW3U7HJBTO/bundle.json","state_url":"https://pith.science/pith/6HEZUQZG33NUFLIEXW3U7HJBTO/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/6HEZUQZG33NUFLIEXW3U7HJBTO/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":"2026-05-25T23:41:50Z","links":{"resolver":"https://pith.science/pith/6HEZUQZG33NUFLIEXW3U7HJBTO","bundle":"https://pith.science/pith/6HEZUQZG33NUFLIEXW3U7HJBTO/bundle.json","state":"https://pith.science/pith/6HEZUQZG33NUFLIEXW3U7HJBTO/state.json","well_known_bundle":"https://pith.science/.well-known/pith/6HEZUQZG33NUFLIEXW3U7HJBTO/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:6HEZUQZG33NUFLIEXW3U7HJBTO","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":"07a4887cbf4b567b7ce0268c002380cccb3aaefd1b6d2943b965e16c60db4d59","cross_cats_sorted":["gr-qc"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2015-11-22T20:40:05Z","title_canon_sha256":"b74655b310974d60a9456577be0fd7e9503188cf14f992ced6b49f11a0c3d047"},"schema_version":"1.0","source":{"id":"1511.07066","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1511.07066","created_at":"2026-05-18T00:55:14Z"},{"alias_kind":"arxiv_version","alias_value":"1511.07066v2","created_at":"2026-05-18T00:55:14Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1511.07066","created_at":"2026-05-18T00:55:14Z"},{"alias_kind":"pith_short_12","alias_value":"6HEZUQZG33NU","created_at":"2026-05-18T12:29:07Z"},{"alias_kind":"pith_short_16","alias_value":"6HEZUQZG33NUFLIE","created_at":"2026-05-18T12:29:07Z"},{"alias_kind":"pith_short_8","alias_value":"6HEZUQZG","created_at":"2026-05-18T12:29:07Z"}],"graph_snapshots":[{"event_id":"sha256:835ae52bb38ffe122153bf85dfa47266b35ae89ed2798bd97278407c002c4123","target":"graph","created_at":"2026-05-18T00:55:14Z","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":"Cosmic acceleration is usually related with the unknown dark energy, which equation of state, w(z), is constrained and numerically confronted with independent astrophysical data. In order to make a diagnostic of w(z), the introduction of a null test of dark energy can be done using a diagnostic function of redshift, Om. In this work we present a nonparametric reconstruction of this diagnostic using the so-called Loess-Simex factory to test the concordance model with the advantage that this approach offers an alternative way to relax the use of priors and find a possible 'w' that reliably descr","authors_text":"Celia Escamilla-Rivera, Julio C. Fabris","cross_cats":["gr-qc"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2015-11-22T20:40:05Z","title":"Nonparametric reconstruction of the Om diagnostic to test LCDM"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1511.07066","kind":"arxiv","version":2},"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":"sha256:0f661022e0818076e90bdf5fbdab0727940e8eff68270fdd8cfdbde5402b1076","target":"record","created_at":"2026-05-18T00:55:14Z","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":"07a4887cbf4b567b7ce0268c002380cccb3aaefd1b6d2943b965e16c60db4d59","cross_cats_sorted":["gr-qc"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2015-11-22T20:40:05Z","title_canon_sha256":"b74655b310974d60a9456577be0fd7e9503188cf14f992ced6b49f11a0c3d047"},"schema_version":"1.0","source":{"id":"1511.07066","kind":"arxiv","version":2}},"canonical_sha256":"f1c99a4326dedb42ad04bdb74f9d219bb9eeaa3acab937e964a90bedb5dc3cdc","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"f1c99a4326dedb42ad04bdb74f9d219bb9eeaa3acab937e964a90bedb5dc3cdc","first_computed_at":"2026-05-18T00:55:14.346389Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:55:14.346389Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"DtcprGSCeGDMb7TqY2erW/Rn1c5Sm7FxNDV7mgYS8ZmWQmTUxttU6hiQOZoPLMlZPzO0iNdpuJYoacmZYA8SBQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:55:14.346838Z","signed_message":"canonical_sha256_bytes"},"source_id":"1511.07066","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:0f661022e0818076e90bdf5fbdab0727940e8eff68270fdd8cfdbde5402b1076","sha256:835ae52bb38ffe122153bf85dfa47266b35ae89ed2798bd97278407c002c4123"],"state_sha256":"e3ddb8cef77131f40820f87d8c427c7f785c79bf9f169ac714eb7b7d80ca05ad"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"1bprajaDplzFVYgvraerOVn4uI0y2IOcUosPwIfrFebXZbfpJq3nvXVd38oNxl3fB7TSlOqu9lYvPmGWjWSsBQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-25T23:41:50.746260Z","bundle_sha256":"761064d2ac967a8a493d5471265b41e084bb4a24eb13c3d3ba607fac815dfd19"}}