{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2000:N5ZFFPASFCBH33GIP2M7V3V2WG","short_pith_number":"pith:N5ZFFPAS","canonical_record":{"source":{"id":"astro-ph/0010467","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2000-10-23T23:00:06Z","cross_cats_sorted":[],"title_canon_sha256":"4eafcfae49e4344ed593f9a449ad89d7901dc7ba34a17ac562a10cf6588d40bd","abstract_canon_sha256":"0f682c76a82746276db2b345845ef0575e08bf343d41fc31fe460dfae3cfdbca"},"schema_version":"1.0"},"canonical_sha256":"6f7252bc1228827decc87e99faeebab1b14356817577d5d7afb48826ab39819b","source":{"kind":"arxiv","id":"astro-ph/0010467","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0010467","created_at":"2026-07-04T16:17:27Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0010467v1","created_at":"2026-07-04T16:17:27Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0010467","created_at":"2026-07-04T16:17:27Z"},{"alias_kind":"pith_short_12","alias_value":"N5ZFFPASFCBH","created_at":"2026-07-04T16:17:27Z"},{"alias_kind":"pith_short_16","alias_value":"N5ZFFPASFCBH33GI","created_at":"2026-07-04T16:17:27Z"},{"alias_kind":"pith_short_8","alias_value":"N5ZFFPAS","created_at":"2026-07-04T16:17:27Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2000:N5ZFFPASFCBH33GIP2M7V3V2WG","target":"record","payload":{"canonical_record":{"source":{"id":"astro-ph/0010467","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2000-10-23T23:00:06Z","cross_cats_sorted":[],"title_canon_sha256":"4eafcfae49e4344ed593f9a449ad89d7901dc7ba34a17ac562a10cf6588d40bd","abstract_canon_sha256":"0f682c76a82746276db2b345845ef0575e08bf343d41fc31fe460dfae3cfdbca"},"schema_version":"1.0"},"canonical_sha256":"6f7252bc1228827decc87e99faeebab1b14356817577d5d7afb48826ab39819b","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T16:17:27.107616Z","signature_b64":"6PsLTBwXPVdc++vBZjzX9MVESDgKTFS+DIFF6StzDMiMHXyTk8KxFkd3cXEsJ35p0CEQmAJDJUUwy6XlEcLiCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"6f7252bc1228827decc87e99faeebab1b14356817577d5d7afb48826ab39819b","last_reissued_at":"2026-07-04T16:17:27.107080Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T16:17:27.107080Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"astro-ph/0010467","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":"2026-07-04T16:17:27Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"XJfxrY/Uw9nuUuDVP7ACgFdBfbSOSFlWbW234UjpOu7oIh0f4sJd85RNEwVeMfP/f52sQXbre07lVg940I8HDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-08T16:39:49.283067Z"},"content_sha256":"8d725aabad25e3f186bd04790124ced56a9ab72c147d7fcc35b48ff0a7d65360","schema_version":"1.0","event_id":"sha256:8d725aabad25e3f186bd04790124ced56a9ab72c147d7fcc35b48ff0a7d65360"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2000:N5ZFFPASFCBH33GIP2M7V3V2WG","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The Reionization of the Universe by the First Stars and Quasars","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"Abraham Loeb (Harvard University), Princeton NJ), Rennan Barkana (IAS","submitted_at":"2000-10-23T23:00:06Z","abstract_excerpt":"The first light from stars and quasars ended the ``dark ages'' of the universe and led to the reionization of hydrogen by redshift 7. Current observations are at the threshold of probing this epoch. The study of high-redshift sources is likely to attract major attention in observational and theoretical cosmology over the next decade."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0010467","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/0010467/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":"2026-07-04T16:17:27Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"eLSfepKeKJ6vnkl2R4MuabDsrIRBu71lcXbvNQB4KjENz92+PyTOPApWqJi07lHY+a7XsgorlP3fg/NcPq3zDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-08T16:39:49.283627Z"},"content_sha256":"b13d0785e8e9cc1039015b73c22186c1d8bccf68bc9571e8827fd38311986b20","schema_version":"1.0","event_id":"sha256:b13d0785e8e9cc1039015b73c22186c1d8bccf68bc9571e8827fd38311986b20"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/N5ZFFPASFCBH33GIP2M7V3V2WG/bundle.json","state_url":"https://pith.science/pith/N5ZFFPASFCBH33GIP2M7V3V2WG/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/N5ZFFPASFCBH33GIP2M7V3V2WG/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":"2026-08-08T16:39:49Z","links":{"resolver":"https://pith.science/pith/N5ZFFPASFCBH33GIP2M7V3V2WG","bundle":"https://pith.science/pith/N5ZFFPASFCBH33GIP2M7V3V2WG/bundle.json","state":"https://pith.science/pith/N5ZFFPASFCBH33GIP2M7V3V2WG/state.json","well_known_bundle":"https://pith.science/.well-known/pith/N5ZFFPASFCBH33GIP2M7V3V2WG/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2000:N5ZFFPASFCBH33GIP2M7V3V2WG","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":"0f682c76a82746276db2b345845ef0575e08bf343d41fc31fe460dfae3cfdbca","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2000-10-23T23:00:06Z","title_canon_sha256":"4eafcfae49e4344ed593f9a449ad89d7901dc7ba34a17ac562a10cf6588d40bd"},"schema_version":"1.0","source":{"id":"astro-ph/0010467","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0010467","created_at":"2026-07-04T16:17:27Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0010467v1","created_at":"2026-07-04T16:17:27Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0010467","created_at":"2026-07-04T16:17:27Z"},{"alias_kind":"pith_short_12","alias_value":"N5ZFFPASFCBH","created_at":"2026-07-04T16:17:27Z"},{"alias_kind":"pith_short_16","alias_value":"N5ZFFPASFCBH33GI","created_at":"2026-07-04T16:17:27Z"},{"alias_kind":"pith_short_8","alias_value":"N5ZFFPAS","created_at":"2026-07-04T16:17:27Z"}],"graph_snapshots":[{"event_id":"sha256:b13d0785e8e9cc1039015b73c22186c1d8bccf68bc9571e8827fd38311986b20","target":"graph","created_at":"2026-07-04T16:17:27Z","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/0010467/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The first light from stars and quasars ended the ``dark ages'' of the universe and led to the reionization of hydrogen by redshift 7. Current observations are at the threshold of probing this epoch. The study of high-redshift sources is likely to attract major attention in observational and theoretical cosmology over the next decade.","authors_text":"Abraham Loeb (Harvard University), Princeton NJ), Rennan Barkana (IAS","cross_cats":[],"headline":"","license":"","primary_cat":"astro-ph","submitted_at":"2000-10-23T23:00:06Z","title":"The Reionization of the Universe by the First Stars and Quasars"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0010467","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":"sha256:8d725aabad25e3f186bd04790124ced56a9ab72c147d7fcc35b48ff0a7d65360","target":"record","created_at":"2026-07-04T16:17:27Z","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":"0f682c76a82746276db2b345845ef0575e08bf343d41fc31fe460dfae3cfdbca","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2000-10-23T23:00:06Z","title_canon_sha256":"4eafcfae49e4344ed593f9a449ad89d7901dc7ba34a17ac562a10cf6588d40bd"},"schema_version":"1.0","source":{"id":"astro-ph/0010467","kind":"arxiv","version":1}},"canonical_sha256":"6f7252bc1228827decc87e99faeebab1b14356817577d5d7afb48826ab39819b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"6f7252bc1228827decc87e99faeebab1b14356817577d5d7afb48826ab39819b","first_computed_at":"2026-07-04T16:17:27.107080Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T16:17:27.107080Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"6PsLTBwXPVdc++vBZjzX9MVESDgKTFS+DIFF6StzDMiMHXyTk8KxFkd3cXEsJ35p0CEQmAJDJUUwy6XlEcLiCg==","signature_status":"signed_v1","signed_at":"2026-07-04T16:17:27.107616Z","signed_message":"canonical_sha256_bytes"},"source_id":"astro-ph/0010467","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:8d725aabad25e3f186bd04790124ced56a9ab72c147d7fcc35b48ff0a7d65360","sha256:b13d0785e8e9cc1039015b73c22186c1d8bccf68bc9571e8827fd38311986b20"],"state_sha256":"d4e9f8dfa3bb5d19ed78b2e5b110694e343a8f610605bccb03b6ceb80ff15d8b"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"1og+Ks2D0S2ObGFr4nJXZ3nOOd+/vakeUqPVaobJw37/qVBM0oqimN2iEipfhyMJ7uFmIdDYjJdemRElgCNXAA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-08T16:39:49.288590Z","bundle_sha256":"bc56db6199247427c43b70d150381980b19ee57026a8e36eee5045c3af02930b"}}