{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2024:ULC2CZSZUACIPOH2NW7KXMHE7M","short_pith_number":"pith:ULC2CZSZ","canonical_record":{"source":{"id":"2411.16678","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2024-11-25T18:59:23Z","cross_cats_sorted":[],"title_canon_sha256":"5b6abc6be6ef965078bc12a1a79db34efee76ac6cb6061970e3a5e5cd4a350a4","abstract_canon_sha256":"24522bd3abc95f3d29379b4806cc773c9cab9cf00ed8a1a514315d4f1b0e6986"},"schema_version":"1.0"},"canonical_sha256":"a2c5a16659a00487b8fa6dbeabb0e4fb17fde4b8dd56561c35a0fc6981870e63","source":{"kind":"arxiv","id":"2411.16678","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2411.16678","created_at":"2026-07-05T10:47:56Z"},{"alias_kind":"arxiv_version","alias_value":"2411.16678v2","created_at":"2026-07-05T10:47:56Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2411.16678","created_at":"2026-07-05T10:47:56Z"},{"alias_kind":"pith_short_12","alias_value":"ULC2CZSZUACI","created_at":"2026-07-05T10:47:56Z"},{"alias_kind":"pith_short_16","alias_value":"ULC2CZSZUACIPOH2","created_at":"2026-07-05T10:47:56Z"},{"alias_kind":"pith_short_8","alias_value":"ULC2CZSZ","created_at":"2026-07-05T10:47:56Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2024:ULC2CZSZUACIPOH2NW7KXMHE7M","target":"record","payload":{"canonical_record":{"source":{"id":"2411.16678","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2024-11-25T18:59:23Z","cross_cats_sorted":[],"title_canon_sha256":"5b6abc6be6ef965078bc12a1a79db34efee76ac6cb6061970e3a5e5cd4a350a4","abstract_canon_sha256":"24522bd3abc95f3d29379b4806cc773c9cab9cf00ed8a1a514315d4f1b0e6986"},"schema_version":"1.0"},"canonical_sha256":"a2c5a16659a00487b8fa6dbeabb0e4fb17fde4b8dd56561c35a0fc6981870e63","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T10:47:56.273257Z","signature_b64":"psV57dhoIvtSBi92Ic+TW8slZilcf0tKLB5RImSIz87bhPeMmwRxpYzrPucC1GDs7NV1a/PYC5AN6BxGgLs5CA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"a2c5a16659a00487b8fa6dbeabb0e4fb17fde4b8dd56561c35a0fc6981870e63","last_reissued_at":"2026-07-05T10:47:56.272796Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T10:47:56.272796Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2411.16678","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":"2026-07-05T10:47:56Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"uJKsgWAaggTyo6W9D3GT8Dtqu15pHlPcJPXpQqfhTDzt/sx6TbzK27a7ZhRbrIiRA4+ISxulXhSZVsl/TMHhAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-11T01:05:11.170242Z"},"content_sha256":"be6c2058a96c087901c3c8b6b7b55443c4d61bfaf853f805b60b0335674141d8","schema_version":"1.0","event_id":"sha256:be6c2058a96c087901c3c8b6b7b55443c4d61bfaf853f805b60b0335674141d8"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2024:ULC2CZSZUACIPOH2NW7KXMHE7M","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Modified recombination and the Hubble tension","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"Karsten Jedamzik, Levon Pogosian, Seyed Hamidreza Mirpoorian","submitted_at":"2024-11-25T18:59:23Z","abstract_excerpt":"We investigate the extent to which modifying the ionization history at cosmological recombination can relieve the Hubble tension, taking into account all relevant datasets and considering the implications for the galaxy clustering parameter $S_8$ and the matter density fraction $\\Omega_m$. We use the linear response approximation to systematically search for candidate ionization histories parameterized with a cubic-spline that provide good fits to the Planck CMB and DESI BAO data while relieving the $H_0$ tension, followed by MCMC fits of the most promising candidate models to the data. We als"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2411.16678","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/2411.16678/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":"2026-07-05T10:47:56Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"4MEXxAbY0KaadgWorGHwZXna6YbR0CzI1INpLByvE+E1ijEQaVpqUGQkpXZV55hcf1PsDf5AVKhZk7q0S/LaBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-11T01:05:11.171030Z"},"content_sha256":"3fbfd39f8cf950fc74d3d9d0862f4a42ea144f0cbe71aaddc725de3800b157f6","schema_version":"1.0","event_id":"sha256:3fbfd39f8cf950fc74d3d9d0862f4a42ea144f0cbe71aaddc725de3800b157f6"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/ULC2CZSZUACIPOH2NW7KXMHE7M/bundle.json","state_url":"https://pith.science/pith/ULC2CZSZUACIPOH2NW7KXMHE7M/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/ULC2CZSZUACIPOH2NW7KXMHE7M/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":"2026-08-11T01:05:11Z","links":{"resolver":"https://pith.science/pith/ULC2CZSZUACIPOH2NW7KXMHE7M","bundle":"https://pith.science/pith/ULC2CZSZUACIPOH2NW7KXMHE7M/bundle.json","state":"https://pith.science/pith/ULC2CZSZUACIPOH2NW7KXMHE7M/state.json","well_known_bundle":"https://pith.science/.well-known/pith/ULC2CZSZUACIPOH2NW7KXMHE7M/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2024:ULC2CZSZUACIPOH2NW7KXMHE7M","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":"24522bd3abc95f3d29379b4806cc773c9cab9cf00ed8a1a514315d4f1b0e6986","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2024-11-25T18:59:23Z","title_canon_sha256":"5b6abc6be6ef965078bc12a1a79db34efee76ac6cb6061970e3a5e5cd4a350a4"},"schema_version":"1.0","source":{"id":"2411.16678","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2411.16678","created_at":"2026-07-05T10:47:56Z"},{"alias_kind":"arxiv_version","alias_value":"2411.16678v2","created_at":"2026-07-05T10:47:56Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2411.16678","created_at":"2026-07-05T10:47:56Z"},{"alias_kind":"pith_short_12","alias_value":"ULC2CZSZUACI","created_at":"2026-07-05T10:47:56Z"},{"alias_kind":"pith_short_16","alias_value":"ULC2CZSZUACIPOH2","created_at":"2026-07-05T10:47:56Z"},{"alias_kind":"pith_short_8","alias_value":"ULC2CZSZ","created_at":"2026-07-05T10:47:56Z"}],"graph_snapshots":[{"event_id":"sha256:3fbfd39f8cf950fc74d3d9d0862f4a42ea144f0cbe71aaddc725de3800b157f6","target":"graph","created_at":"2026-07-05T10:47:56Z","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/2411.16678/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We investigate the extent to which modifying the ionization history at cosmological recombination can relieve the Hubble tension, taking into account all relevant datasets and considering the implications for the galaxy clustering parameter $S_8$ and the matter density fraction $\\Omega_m$. We use the linear response approximation to systematically search for candidate ionization histories parameterized with a cubic-spline that provide good fits to the Planck CMB and DESI BAO data while relieving the $H_0$ tension, followed by MCMC fits of the most promising candidate models to the data. We als","authors_text":"Karsten Jedamzik, Levon Pogosian, Seyed Hamidreza Mirpoorian","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2024-11-25T18:59:23Z","title":"Modified recombination and the Hubble tension"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2411.16678","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:be6c2058a96c087901c3c8b6b7b55443c4d61bfaf853f805b60b0335674141d8","target":"record","created_at":"2026-07-05T10:47:56Z","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":"24522bd3abc95f3d29379b4806cc773c9cab9cf00ed8a1a514315d4f1b0e6986","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2024-11-25T18:59:23Z","title_canon_sha256":"5b6abc6be6ef965078bc12a1a79db34efee76ac6cb6061970e3a5e5cd4a350a4"},"schema_version":"1.0","source":{"id":"2411.16678","kind":"arxiv","version":2}},"canonical_sha256":"a2c5a16659a00487b8fa6dbeabb0e4fb17fde4b8dd56561c35a0fc6981870e63","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"a2c5a16659a00487b8fa6dbeabb0e4fb17fde4b8dd56561c35a0fc6981870e63","first_computed_at":"2026-07-05T10:47:56.272796Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T10:47:56.272796Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"psV57dhoIvtSBi92Ic+TW8slZilcf0tKLB5RImSIz87bhPeMmwRxpYzrPucC1GDs7NV1a/PYC5AN6BxGgLs5CA==","signature_status":"signed_v1","signed_at":"2026-07-05T10:47:56.273257Z","signed_message":"canonical_sha256_bytes"},"source_id":"2411.16678","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:be6c2058a96c087901c3c8b6b7b55443c4d61bfaf853f805b60b0335674141d8","sha256:3fbfd39f8cf950fc74d3d9d0862f4a42ea144f0cbe71aaddc725de3800b157f6"],"state_sha256":"daa5e500279f7ae8d28c097a8ace0209cebb49dfbf4f9edf99d0d00a01aa374a"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"pbGfaEJb4RVCXkowo/LAZCCFJj7jmB8DCRGZdMEhxKBjsp5qvhUY8Lc0Ht18MfC6hHB/kse0/kIWuYH7Rk6TDw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-11T01:05:11.176304Z","bundle_sha256":"fc620edc0ec038290c7c72344e07d1c574abaa586ab887a3dc15a4a26241dbb1"}}