{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2025:ACCDFKMADNKNWH2E2SPGTQJLGE","short_pith_number":"pith:ACCDFKMA","canonical_record":{"source":{"id":"2512.19175","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.CO","submitted_at":"2025-12-22T09:09:30Z","cross_cats_sorted":["gr-qc"],"title_canon_sha256":"f68f83ac8f8c45f2d7659f3b265e601c8bf093177da146c45c608572b45892eb","abstract_canon_sha256":"1057f401f02f0cdc5510a6ab09ac24c9b0bafcded8df20c9a1f76db7150385e5"},"schema_version":"1.0"},"canonical_sha256":"008432a9801b54db1f44d49e69c12b31219ecba9efb6f32b40dca52bcbd877a5","source":{"kind":"arxiv","id":"2512.19175","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2512.19175","created_at":"2026-05-26T02:05:05Z"},{"alias_kind":"arxiv_version","alias_value":"2512.19175v2","created_at":"2026-05-26T02:05:05Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2512.19175","created_at":"2026-05-26T02:05:05Z"},{"alias_kind":"pith_short_12","alias_value":"ACCDFKMADNKN","created_at":"2026-05-26T02:05:05Z"},{"alias_kind":"pith_short_16","alias_value":"ACCDFKMADNKNWH2E","created_at":"2026-05-26T02:05:05Z"},{"alias_kind":"pith_short_8","alias_value":"ACCDFKMA","created_at":"2026-05-26T02:05:05Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2025:ACCDFKMADNKNWH2E2SPGTQJLGE","target":"record","payload":{"canonical_record":{"source":{"id":"2512.19175","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.CO","submitted_at":"2025-12-22T09:09:30Z","cross_cats_sorted":["gr-qc"],"title_canon_sha256":"f68f83ac8f8c45f2d7659f3b265e601c8bf093177da146c45c608572b45892eb","abstract_canon_sha256":"1057f401f02f0cdc5510a6ab09ac24c9b0bafcded8df20c9a1f76db7150385e5"},"schema_version":"1.0"},"canonical_sha256":"008432a9801b54db1f44d49e69c12b31219ecba9efb6f32b40dca52bcbd877a5","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-26T02:05:05.154336Z","signature_b64":"ewuLMHxDFf5/+TdsISIj1piUSQSQgET0EwQuScrwAZXtai6sXRp0zYPutoNxnNpwPSVqLm6PHmHi8TqvSVnpBA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"008432a9801b54db1f44d49e69c12b31219ecba9efb6f32b40dca52bcbd877a5","last_reissued_at":"2026-05-26T02:05:05.153586Z","signature_status":"signed_v1","first_computed_at":"2026-05-26T02:05:05.153586Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2512.19175","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":"2026-05-26T02:05:05Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"pmtCL4bzEfgXfLgMrXJFaPZ5bsr0fppt9QG5RydgEtIfJTmm5SClKjWGwl1sQsCPjrXJ3qho6vTJVemAUN5MBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T19:15:30.081558Z"},"content_sha256":"7fe7d9904bbcb0b787ad54f0939045cec8785e4203b345328fc72a8a1dca91e2","schema_version":"1.0","event_id":"sha256:7fe7d9904bbcb0b787ad54f0939045cec8785e4203b345328fc72a8a1dca91e2"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2025:ACCDFKMADNKNWH2E2SPGTQJLGE","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Joint constraints on $R_h=ct$ cosmology from DESI DR2 BAO, CC, and SN\\textit{Ia} Pantheon$^+$ sample","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["gr-qc"],"primary_cat":"astro-ph.CO","authors_text":"A. F. Santos, Amritansh Mehrotra, S. K. J. Pacif","submitted_at":"2025-12-22T09:09:30Z","abstract_excerpt":"We carry out a comparative analysis of the standard $\\Lambda$CDM cosmological model and the alternative $R_h=ct$ framework using recent observational data from cosmic chronometers (CC), Type Ia supernova, and baryon acoustic oscillations. The study evaluates the ability of each model to reproduce the observed expansion history of the Universe through a joint statistical assessment based on $\\chi^2$ statistics, Akaike Information Criterion $(AIC)$, Bayesian Information Criterion $(BIC)$, and Bayes factor. While both models yield acceptable fits, $\\Lambda$CDM consistently attains lower informati"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2512.19175","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2512.19175/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2026-05-26T02:05:05Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"WZizVkNDcTbT5n1Y4S9c+Jng5sO+mLEfS/EmBh11mrQafGALkYIYm3y8c7bDQx7D+nEDaIaBUM3rIZ0drLqTCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T19:15:30.082291Z"},"content_sha256":"96c449d75dfb81ad4bf37f3e9524b7aca13a34ff670bf3b1db58d3dd98349892","schema_version":"1.0","event_id":"sha256:96c449d75dfb81ad4bf37f3e9524b7aca13a34ff670bf3b1db58d3dd98349892"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/ACCDFKMADNKNWH2E2SPGTQJLGE/bundle.json","state_url":"https://pith.science/pith/ACCDFKMADNKNWH2E2SPGTQJLGE/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/ACCDFKMADNKNWH2E2SPGTQJLGE/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":"2026-05-27T19:15:30Z","links":{"resolver":"https://pith.science/pith/ACCDFKMADNKNWH2E2SPGTQJLGE","bundle":"https://pith.science/pith/ACCDFKMADNKNWH2E2SPGTQJLGE/bundle.json","state":"https://pith.science/pith/ACCDFKMADNKNWH2E2SPGTQJLGE/state.json","well_known_bundle":"https://pith.science/.well-known/pith/ACCDFKMADNKNWH2E2SPGTQJLGE/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2025:ACCDFKMADNKNWH2E2SPGTQJLGE","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":"1057f401f02f0cdc5510a6ab09ac24c9b0bafcded8df20c9a1f76db7150385e5","cross_cats_sorted":["gr-qc"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.CO","submitted_at":"2025-12-22T09:09:30Z","title_canon_sha256":"f68f83ac8f8c45f2d7659f3b265e601c8bf093177da146c45c608572b45892eb"},"schema_version":"1.0","source":{"id":"2512.19175","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2512.19175","created_at":"2026-05-26T02:05:05Z"},{"alias_kind":"arxiv_version","alias_value":"2512.19175v2","created_at":"2026-05-26T02:05:05Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2512.19175","created_at":"2026-05-26T02:05:05Z"},{"alias_kind":"pith_short_12","alias_value":"ACCDFKMADNKN","created_at":"2026-05-26T02:05:05Z"},{"alias_kind":"pith_short_16","alias_value":"ACCDFKMADNKNWH2E","created_at":"2026-05-26T02:05:05Z"},{"alias_kind":"pith_short_8","alias_value":"ACCDFKMA","created_at":"2026-05-26T02:05:05Z"}],"graph_snapshots":[{"event_id":"sha256:96c449d75dfb81ad4bf37f3e9524b7aca13a34ff670bf3b1db58d3dd98349892","target":"graph","created_at":"2026-05-26T02:05:05Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2512.19175/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We carry out a comparative analysis of the standard $\\Lambda$CDM cosmological model and the alternative $R_h=ct$ framework using recent observational data from cosmic chronometers (CC), Type Ia supernova, and baryon acoustic oscillations. The study evaluates the ability of each model to reproduce the observed expansion history of the Universe through a joint statistical assessment based on $\\chi^2$ statistics, Akaike Information Criterion $(AIC)$, Bayesian Information Criterion $(BIC)$, and Bayes factor. While both models yield acceptable fits, $\\Lambda$CDM consistently attains lower informati","authors_text":"A. F. Santos, Amritansh Mehrotra, S. K. J. Pacif","cross_cats":["gr-qc"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.CO","submitted_at":"2025-12-22T09:09:30Z","title":"Joint constraints on $R_h=ct$ cosmology from DESI DR2 BAO, CC, and SN\\textit{Ia} Pantheon$^+$ sample"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2512.19175","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":"sha256:7fe7d9904bbcb0b787ad54f0939045cec8785e4203b345328fc72a8a1dca91e2","target":"record","created_at":"2026-05-26T02:05:05Z","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":"1057f401f02f0cdc5510a6ab09ac24c9b0bafcded8df20c9a1f76db7150385e5","cross_cats_sorted":["gr-qc"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.CO","submitted_at":"2025-12-22T09:09:30Z","title_canon_sha256":"f68f83ac8f8c45f2d7659f3b265e601c8bf093177da146c45c608572b45892eb"},"schema_version":"1.0","source":{"id":"2512.19175","kind":"arxiv","version":2}},"canonical_sha256":"008432a9801b54db1f44d49e69c12b31219ecba9efb6f32b40dca52bcbd877a5","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"008432a9801b54db1f44d49e69c12b31219ecba9efb6f32b40dca52bcbd877a5","first_computed_at":"2026-05-26T02:05:05.153586Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-26T02:05:05.153586Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"ewuLMHxDFf5/+TdsISIj1piUSQSQgET0EwQuScrwAZXtai6sXRp0zYPutoNxnNpwPSVqLm6PHmHi8TqvSVnpBA==","signature_status":"signed_v1","signed_at":"2026-05-26T02:05:05.154336Z","signed_message":"canonical_sha256_bytes"},"source_id":"2512.19175","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:7fe7d9904bbcb0b787ad54f0939045cec8785e4203b345328fc72a8a1dca91e2","sha256:96c449d75dfb81ad4bf37f3e9524b7aca13a34ff670bf3b1db58d3dd98349892"],"state_sha256":"d8f559c491a14929e9720cc9215ca70fae829a73935206f79eb09a1418db8497"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"o9OHyr40LUuriVIoEtVmT6a9gMEo9Y268ievVqQmqLbM+jIaYMCFyhgmTb9Up8Mh8lb5p8IDUcpBUGhRCAi3DA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-27T19:15:30.085589Z","bundle_sha256":"108d432e36603a9ed378f67bbaf7c415b72560cb8db618ec6dbb1ca6f40dd60b"}}