{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2026:IGJWSUH4QOICXPYKF3ATYLOGLE","short_pith_number":"pith:IGJWSUH4","canonical_record":{"source":{"id":"2607.26373","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2026-07-29T01:20:58Z","cross_cats_sorted":[],"title_canon_sha256":"d50c6c7399f46dbbdce2daedba73198e75f585607b1efa085c6074be50b559b7","abstract_canon_sha256":"c48c243370b48cc04dc2736262f777a3ffaffb07d00db22f050dfd6f598b845e"},"schema_version":"1.0"},"canonical_sha256":"41936950fc83902bbf0a2ec13c2dc6593a93789335a8ef2deaf0eb22312955ea","source":{"kind":"arxiv","id":"2607.26373","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2607.26373","created_at":"2026-07-30T01:18:14Z"},{"alias_kind":"arxiv_version","alias_value":"2607.26373v1","created_at":"2026-07-30T01:18:14Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2607.26373","created_at":"2026-07-30T01:18:14Z"},{"alias_kind":"pith_short_12","alias_value":"IGJWSUH4QOIC","created_at":"2026-07-30T01:18:14Z"},{"alias_kind":"pith_short_16","alias_value":"IGJWSUH4QOICXPYK","created_at":"2026-07-30T01:18:14Z"},{"alias_kind":"pith_short_8","alias_value":"IGJWSUH4","created_at":"2026-07-30T01:18:14Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2026:IGJWSUH4QOICXPYKF3ATYLOGLE","target":"record","payload":{"canonical_record":{"source":{"id":"2607.26373","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2026-07-29T01:20:58Z","cross_cats_sorted":[],"title_canon_sha256":"d50c6c7399f46dbbdce2daedba73198e75f585607b1efa085c6074be50b559b7","abstract_canon_sha256":"c48c243370b48cc04dc2736262f777a3ffaffb07d00db22f050dfd6f598b845e"},"schema_version":"1.0"},"canonical_sha256":"41936950fc83902bbf0a2ec13c2dc6593a93789335a8ef2deaf0eb22312955ea","receipt":{"kind":"pith_receipt","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"41936950fc83902bbf0a2ec13c2dc6593a93789335a8ef2deaf0eb22312955ea","last_reissued_at":"2026-07-30T01:18:14.024278Z","signature_status":"unsigned_v0","first_computed_at":"2026-07-30T01:18:14.024278Z"},"source_kind":"arxiv","source_id":"2607.26373","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":"2026-07-30T01:18:14Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"kkS2B22t3DcX+CkiYJ1vFYctbJ/uYwtNTCQgPqInYk30CWdX5O1h709sONUi0OFj3MOAR5BH6tp/XqDMXvJzCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-02T06:05:19.742618Z"},"content_sha256":"bc7851bb62cb7b63b239bd9e5b05153872486914da97f31b483d4575e9dc474d","schema_version":"1.0","event_id":"sha256:bc7851bb62cb7b63b239bd9e5b05153872486914da97f31b483d4575e9dc474d"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2026:IGJWSUH4QOICXPYKF3ATYLOGLE","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"No way ou$\\tau$: Epoch of Reionization Observations Do not Support Large Values of the Optical Depth to Reionization","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"Paulo Montero-Camacho, Yi Mao","submitted_at":"2026-07-29T01:20:58Z","abstract_excerpt":"Recent cosmological analyses combining high-redshift cosmic microwave background (CMB) measurements with low-redshift baryon acoustic oscillation (BAO) data have reported a preference for dynamical dark energy, with the cosmological constant scenario ($\\Lambda$CDM) disfavored at the $\\sim 3\\sigma$ level. These analyses, however, typically rely on large-scale CMB polarization measurements to constrain the optical depth to reionization $\\tau_{\\rm reio}\\sim 0.06$, raising the question of whether potential systematics in this dataset could influence the inferred cosmological preference. Excluding "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2607.26373","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2607.26373/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":"2026-07-30T01:18:14Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"AVPCrOOFfAprr3+AxL0Fz2e5O4Hsy89Rf+Y4LS+ULlwZl3PyqCH7tIgh8Otl86RjlCM3/qgJ8B1ak+4atQZHCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-02T06:05:19.743126Z"},"content_sha256":"6545019d7fd9c07b540e18410c558530ca5348fd2edd3532e011b4133a072022","schema_version":"1.0","event_id":"sha256:6545019d7fd9c07b540e18410c558530ca5348fd2edd3532e011b4133a072022"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/IGJWSUH4QOICXPYKF3ATYLOGLE/bundle.json","state_url":"https://pith.science/pith/IGJWSUH4QOICXPYKF3ATYLOGLE/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/IGJWSUH4QOICXPYKF3ATYLOGLE/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":"2026-08-02T06:05:19Z","links":{"resolver":"https://pith.science/pith/IGJWSUH4QOICXPYKF3ATYLOGLE","bundle":"https://pith.science/pith/IGJWSUH4QOICXPYKF3ATYLOGLE/bundle.json","state":"https://pith.science/pith/IGJWSUH4QOICXPYKF3ATYLOGLE/state.json","well_known_bundle":"https://pith.science/.well-known/pith/IGJWSUH4QOICXPYKF3ATYLOGLE/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:IGJWSUH4QOICXPYKF3ATYLOGLE","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":"c48c243370b48cc04dc2736262f777a3ffaffb07d00db22f050dfd6f598b845e","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2026-07-29T01:20:58Z","title_canon_sha256":"d50c6c7399f46dbbdce2daedba73198e75f585607b1efa085c6074be50b559b7"},"schema_version":"1.0","source":{"id":"2607.26373","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2607.26373","created_at":"2026-07-30T01:18:14Z"},{"alias_kind":"arxiv_version","alias_value":"2607.26373v1","created_at":"2026-07-30T01:18:14Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2607.26373","created_at":"2026-07-30T01:18:14Z"},{"alias_kind":"pith_short_12","alias_value":"IGJWSUH4QOIC","created_at":"2026-07-30T01:18:14Z"},{"alias_kind":"pith_short_16","alias_value":"IGJWSUH4QOICXPYK","created_at":"2026-07-30T01:18:14Z"},{"alias_kind":"pith_short_8","alias_value":"IGJWSUH4","created_at":"2026-07-30T01:18:14Z"}],"graph_snapshots":[{"event_id":"sha256:6545019d7fd9c07b540e18410c558530ca5348fd2edd3532e011b4133a072022","target":"graph","created_at":"2026-07-30T01:18:14Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2607.26373/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Recent cosmological analyses combining high-redshift cosmic microwave background (CMB) measurements with low-redshift baryon acoustic oscillation (BAO) data have reported a preference for dynamical dark energy, with the cosmological constant scenario ($\\Lambda$CDM) disfavored at the $\\sim 3\\sigma$ level. These analyses, however, typically rely on large-scale CMB polarization measurements to constrain the optical depth to reionization $\\tau_{\\rm reio}\\sim 0.06$, raising the question of whether potential systematics in this dataset could influence the inferred cosmological preference. Excluding ","authors_text":"Paulo Montero-Camacho, Yi Mao","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2026-07-29T01:20:58Z","title":"No way ou$\\tau$: Epoch of Reionization Observations Do not Support Large Values of the Optical Depth to Reionization"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2607.26373","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:bc7851bb62cb7b63b239bd9e5b05153872486914da97f31b483d4575e9dc474d","target":"record","created_at":"2026-07-30T01:18:14Z","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":"c48c243370b48cc04dc2736262f777a3ffaffb07d00db22f050dfd6f598b845e","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2026-07-29T01:20:58Z","title_canon_sha256":"d50c6c7399f46dbbdce2daedba73198e75f585607b1efa085c6074be50b559b7"},"schema_version":"1.0","source":{"id":"2607.26373","kind":"arxiv","version":1}},"canonical_sha256":"41936950fc83902bbf0a2ec13c2dc6593a93789335a8ef2deaf0eb22312955ea","receipt":{"builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"41936950fc83902bbf0a2ec13c2dc6593a93789335a8ef2deaf0eb22312955ea","first_computed_at":"2026-07-30T01:18:14.024278Z","kind":"pith_receipt","last_reissued_at":"2026-07-30T01:18:14.024278Z","receipt_version":"0.3","signature_status":"unsigned_v0"},"source_id":"2607.26373","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:bc7851bb62cb7b63b239bd9e5b05153872486914da97f31b483d4575e9dc474d","sha256:6545019d7fd9c07b540e18410c558530ca5348fd2edd3532e011b4133a072022"],"state_sha256":"b6368a3ca192d2b30cae750655b0fef1b2431ba22be3c486ae7a12f077d75059"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"A89VRACLLHnoawKAV2jdcFcuHhhaiSqNCA4GeNEY9C5Dna56R/I0D+j6aY2YaEb2bBj4X0uVtysHqQuNQJTMDQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-02T06:05:19.746595Z","bundle_sha256":"a572b324aed1699d7d06b7e9ceb7defdf84f3a379831cd791d69097023086922"}}