{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:1992:DYW4DLYLEVBX44ZCEI6RJ4P3NO","short_pith_number":"pith:DYW4DLYL","canonical_record":{"source":{"id":"astro-ph/9210007","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"1992-10-31T20:40:38Z","cross_cats_sorted":["hep-ph"],"title_canon_sha256":"db7a23ab9d808fc4bc7ba449185fd9666784257e71155bf36afc8c835a0c0c8b","abstract_canon_sha256":"b1e7b67f362da4d2cfbb5ef4c1a2fc2861826201424bfa175ba24650e26a3c71"},"schema_version":"1.0"},"canonical_sha256":"1e2dc1af0b25437e7322223d14f1fb6b9b0e36e2f48346daaf4221efdc884550","source":{"kind":"arxiv","id":"astro-ph/9210007","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/9210007","created_at":"2026-07-04T15:54:47Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/9210007v1","created_at":"2026-07-04T15:54:47Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/9210007","created_at":"2026-07-04T15:54:47Z"},{"alias_kind":"pith_short_12","alias_value":"DYW4DLYLEVBX","created_at":"2026-07-04T15:54:47Z"},{"alias_kind":"pith_short_16","alias_value":"DYW4DLYLEVBX44ZC","created_at":"2026-07-04T15:54:47Z"},{"alias_kind":"pith_short_8","alias_value":"DYW4DLYL","created_at":"2026-07-04T15:54:47Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:1992:DYW4DLYLEVBX44ZCEI6RJ4P3NO","target":"record","payload":{"canonical_record":{"source":{"id":"astro-ph/9210007","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"1992-10-31T20:40:38Z","cross_cats_sorted":["hep-ph"],"title_canon_sha256":"db7a23ab9d808fc4bc7ba449185fd9666784257e71155bf36afc8c835a0c0c8b","abstract_canon_sha256":"b1e7b67f362da4d2cfbb5ef4c1a2fc2861826201424bfa175ba24650e26a3c71"},"schema_version":"1.0"},"canonical_sha256":"1e2dc1af0b25437e7322223d14f1fb6b9b0e36e2f48346daaf4221efdc884550","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T15:54:47.965115Z","signature_b64":"4EUbsIRkqvBp3wJMq50WaqXM1Jr4laW7cDsNGZNlApLXI78zqDXB5+ug5eFlQ22iCkRfbwQiBJrbRJfGcoNDDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"1e2dc1af0b25437e7322223d14f1fb6b9b0e36e2f48346daaf4221efdc884550","last_reissued_at":"2026-07-04T15:54:47.964726Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T15:54:47.964726Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"astro-ph/9210007","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":"2026-07-04T15:54:47Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"bbULrWOYRalcEOYTNCNuHog0iKpV/zHuqY6nSjnk9DtH3rjf8oY2Sbf61Vy4c+sbpBoPrccyjejVpnZvsr4iBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-05T11:45:42.389082Z"},"content_sha256":"deea4cdcbc47ba51c461b12f263a7c64af85e627daf9c92c3f5a8a18573ad00c","schema_version":"1.0","event_id":"sha256:deea4cdcbc47ba51c461b12f263a7c64af85e627daf9c92c3f5a8a18573ad00c"},{"event_type":"graph_snapshot","subject_pith_number":"pith:1992:DYW4DLYLEVBX44ZCEI6RJ4P3NO","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Effect of Neutrino Heating on Primordial Nucleosynthesis","license":"","headline":"","cross_cats":["hep-ph"],"primary_cat":"astro-ph","authors_text":"B. Fields, M.S. Turner (U. Chicago/Fermilab), S. Dodelson","submitted_at":"1992-10-31T20:40:38Z","abstract_excerpt":"We have modified the standard code for primordial nucleosynthesis to include the effect of the slight heating of neutrinos by $e^\\pm$ annihilations. There is a small, systematic change in the $^4$He yield, $\\Delta Y \\simeq +1.5\\times 10^{-4}$, which is insensitive to the value of the baryon-to-photon ratio $\\eta$ for $10^{-10}\\la \\eta \\la 10^{-9}$. We also find that the baryon-to-photon ratio decreases by about 0.5\\% less than the canonical factor of 4/11 because some of the entropy in $e^\\pm$ pairs is transferred to neutrinos. These results are in accord with recent analytical estimates."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/9210007","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/astro-ph/9210007/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":"2026-07-04T15:54:47Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"x0LLu4GDVWMfJCiR4YpbFn3klWlaJoyD0l050S6lEcxmhpKeol/0OzbZMZT3FwoHcogNMYdpzSno2Kf87hRPBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-05T11:45:42.389606Z"},"content_sha256":"b8382617d6a20d2f7dc7f28e0ab6306e2f8311c34dd1108fa6287a17cdfeb61a","schema_version":"1.0","event_id":"sha256:b8382617d6a20d2f7dc7f28e0ab6306e2f8311c34dd1108fa6287a17cdfeb61a"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/DYW4DLYLEVBX44ZCEI6RJ4P3NO/bundle.json","state_url":"https://pith.science/pith/DYW4DLYLEVBX44ZCEI6RJ4P3NO/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/DYW4DLYLEVBX44ZCEI6RJ4P3NO/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":"2026-08-05T11:45:42Z","links":{"resolver":"https://pith.science/pith/DYW4DLYLEVBX44ZCEI6RJ4P3NO","bundle":"https://pith.science/pith/DYW4DLYLEVBX44ZCEI6RJ4P3NO/bundle.json","state":"https://pith.science/pith/DYW4DLYLEVBX44ZCEI6RJ4P3NO/state.json","well_known_bundle":"https://pith.science/.well-known/pith/DYW4DLYLEVBX44ZCEI6RJ4P3NO/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:1992:DYW4DLYLEVBX44ZCEI6RJ4P3NO","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":"b1e7b67f362da4d2cfbb5ef4c1a2fc2861826201424bfa175ba24650e26a3c71","cross_cats_sorted":["hep-ph"],"license":"","primary_cat":"astro-ph","submitted_at":"1992-10-31T20:40:38Z","title_canon_sha256":"db7a23ab9d808fc4bc7ba449185fd9666784257e71155bf36afc8c835a0c0c8b"},"schema_version":"1.0","source":{"id":"astro-ph/9210007","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/9210007","created_at":"2026-07-04T15:54:47Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/9210007v1","created_at":"2026-07-04T15:54:47Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/9210007","created_at":"2026-07-04T15:54:47Z"},{"alias_kind":"pith_short_12","alias_value":"DYW4DLYLEVBX","created_at":"2026-07-04T15:54:47Z"},{"alias_kind":"pith_short_16","alias_value":"DYW4DLYLEVBX44ZC","created_at":"2026-07-04T15:54:47Z"},{"alias_kind":"pith_short_8","alias_value":"DYW4DLYL","created_at":"2026-07-04T15:54:47Z"}],"graph_snapshots":[{"event_id":"sha256:b8382617d6a20d2f7dc7f28e0ab6306e2f8311c34dd1108fa6287a17cdfeb61a","target":"graph","created_at":"2026-07-04T15:54:47Z","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/astro-ph/9210007/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We have modified the standard code for primordial nucleosynthesis to include the effect of the slight heating of neutrinos by $e^\\pm$ annihilations. There is a small, systematic change in the $^4$He yield, $\\Delta Y \\simeq +1.5\\times 10^{-4}$, which is insensitive to the value of the baryon-to-photon ratio $\\eta$ for $10^{-10}\\la \\eta \\la 10^{-9}$. We also find that the baryon-to-photon ratio decreases by about 0.5\\% less than the canonical factor of 4/11 because some of the entropy in $e^\\pm$ pairs is transferred to neutrinos. These results are in accord with recent analytical estimates.","authors_text":"B. Fields, M.S. Turner (U. Chicago/Fermilab), S. Dodelson","cross_cats":["hep-ph"],"headline":"","license":"","primary_cat":"astro-ph","submitted_at":"1992-10-31T20:40:38Z","title":"Effect of Neutrino Heating on Primordial Nucleosynthesis"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/9210007","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:deea4cdcbc47ba51c461b12f263a7c64af85e627daf9c92c3f5a8a18573ad00c","target":"record","created_at":"2026-07-04T15:54:47Z","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":"b1e7b67f362da4d2cfbb5ef4c1a2fc2861826201424bfa175ba24650e26a3c71","cross_cats_sorted":["hep-ph"],"license":"","primary_cat":"astro-ph","submitted_at":"1992-10-31T20:40:38Z","title_canon_sha256":"db7a23ab9d808fc4bc7ba449185fd9666784257e71155bf36afc8c835a0c0c8b"},"schema_version":"1.0","source":{"id":"astro-ph/9210007","kind":"arxiv","version":1}},"canonical_sha256":"1e2dc1af0b25437e7322223d14f1fb6b9b0e36e2f48346daaf4221efdc884550","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"1e2dc1af0b25437e7322223d14f1fb6b9b0e36e2f48346daaf4221efdc884550","first_computed_at":"2026-07-04T15:54:47.964726Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T15:54:47.964726Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"4EUbsIRkqvBp3wJMq50WaqXM1Jr4laW7cDsNGZNlApLXI78zqDXB5+ug5eFlQ22iCkRfbwQiBJrbRJfGcoNDDA==","signature_status":"signed_v1","signed_at":"2026-07-04T15:54:47.965115Z","signed_message":"canonical_sha256_bytes"},"source_id":"astro-ph/9210007","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:deea4cdcbc47ba51c461b12f263a7c64af85e627daf9c92c3f5a8a18573ad00c","sha256:b8382617d6a20d2f7dc7f28e0ab6306e2f8311c34dd1108fa6287a17cdfeb61a"],"state_sha256":"ea3d56c0066b8b50380f725f0295060dae18783fdf5812db4f285633da806bfd"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"KmDEtY6uJwf9XE99TIDrjE48LiMKPiKgEbrHqWiAGMkb1VYn2p3L8c7afa1SYFPW8BT12xE8BQ3tMVugPAdEBg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-05T11:45:42.395308Z","bundle_sha256":"94a497afb4f07fec29b1b4ab87e558954009671b77ae28119ca94995f726dd2b"}}