{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2016:4VNFMUH45DZCGVV4NGE2WH7EJL","short_pith_number":"pith:4VNFMUH4","canonical_record":{"source":{"id":"1602.04407","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2016-02-14T01:33:41Z","cross_cats_sorted":["astro-ph.GA"],"title_canon_sha256":"7ed6354d31f3dd6cf7f756757ca6b2b72569b23751ea16e02adf75d9b4785c05","abstract_canon_sha256":"897ed139f5a6eb3a35bcbc31956f530c15f2289ee932ea9cca4e2f3d3e4bba16"},"schema_version":"1.0"},"canonical_sha256":"e55a5650fce8f22356bc6989ab1fe44ac766c5c151548d74780d13fb0d116b57","source":{"kind":"arxiv","id":"1602.04407","version":3},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1602.04407","created_at":"2026-05-18T00:36:33Z"},{"alias_kind":"arxiv_version","alias_value":"1602.04407v3","created_at":"2026-05-18T00:36:33Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1602.04407","created_at":"2026-05-18T00:36:33Z"},{"alias_kind":"pith_short_12","alias_value":"4VNFMUH45DZC","created_at":"2026-05-18T12:29:58Z"},{"alias_kind":"pith_short_16","alias_value":"4VNFMUH45DZCGVV4","created_at":"2026-05-18T12:29:58Z"},{"alias_kind":"pith_short_8","alias_value":"4VNFMUH4","created_at":"2026-05-18T12:29:58Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2016:4VNFMUH45DZCGVV4NGE2WH7EJL","target":"record","payload":{"canonical_record":{"source":{"id":"1602.04407","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2016-02-14T01:33:41Z","cross_cats_sorted":["astro-ph.GA"],"title_canon_sha256":"7ed6354d31f3dd6cf7f756757ca6b2b72569b23751ea16e02adf75d9b4785c05","abstract_canon_sha256":"897ed139f5a6eb3a35bcbc31956f530c15f2289ee932ea9cca4e2f3d3e4bba16"},"schema_version":"1.0"},"canonical_sha256":"e55a5650fce8f22356bc6989ab1fe44ac766c5c151548d74780d13fb0d116b57","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:36:33.450012Z","signature_b64":"ANNGyGmwFACbnWw0u/+SL25bNemSoFSLnXOMdIrveo9p9Skq4atVfufw3R/JQ5a0vqYnyVSc57yoT3p1XMivCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"e55a5650fce8f22356bc6989ab1fe44ac766c5c151548d74780d13fb0d116b57","last_reissued_at":"2026-05-18T00:36:33.449576Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:36:33.449576Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1602.04407","source_version":3,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T00:36:33Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"XimQuo8bIqH7NDJ6vHBGPsf5vPSlkHi2vxQ1aQF8sw8Xh0edBhiA2CKAQlNXyNtvFk5bqn5AkDdkB4RkcvPpDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T22:59:18.004464Z"},"content_sha256":"270ba4cabd4c3f269c901d979f6da30752a3ea80573dc396d4adb30df5a88932","schema_version":"1.0","event_id":"sha256:270ba4cabd4c3f269c901d979f6da30752a3ea80573dc396d4adb30df5a88932"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2016:4VNFMUH45DZCGVV4NGE2WH7EJL","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Constraining the Contribution of Galaxies and Active Galactic Nuclei to Cosmic Reionization","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.GA"],"primary_cat":"astro-ph.CO","authors_text":"Hayato Shimabukuro, Hiroyuki Tashiro, Keitaro Takahashi, Kenji Hasegawa, Kiyotomo Ichiki, Shintaro Yoshiura","submitted_at":"2016-02-14T01:33:41Z","abstract_excerpt":"Understanding the detailed process of cosmic reionization is one of the remaining problems in astrophysics and cosmology. Here we construct a model of cosmic reionization that includes contribution from high-$z$ galaxies and active galactic nuclei (AGNs), and calculate the reionization and thermal histories with the model. To keep the model to be general and realistic, we vary the escape fraction of ionizing photons, $f_{\\rm esc}$, and the faint-end slope of the AGN luminosity function at high redshifts, $\\alpha_{\\rm hz}$, within the constraints from the observed cosmic star formation history "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1602.04407","kind":"arxiv","version":3},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"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":"2026-05-18T00:36:33Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"e6JPI8bD35dWMWMhylc6YERAzCRh1viKZMAluhu/ECPTy0TWJ5bZVfBcU0GLba8jO5mh4b3QAi6d0eidcxgABA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T22:59:18.004834Z"},"content_sha256":"7b2ca5ee509df41d11650c25bb9d518daab17c051f1f50516c9c6bd8ed3573f0","schema_version":"1.0","event_id":"sha256:7b2ca5ee509df41d11650c25bb9d518daab17c051f1f50516c9c6bd8ed3573f0"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/4VNFMUH45DZCGVV4NGE2WH7EJL/bundle.json","state_url":"https://pith.science/pith/4VNFMUH45DZCGVV4NGE2WH7EJL/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/4VNFMUH45DZCGVV4NGE2WH7EJL/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":"2026-06-02T22:59:18Z","links":{"resolver":"https://pith.science/pith/4VNFMUH45DZCGVV4NGE2WH7EJL","bundle":"https://pith.science/pith/4VNFMUH45DZCGVV4NGE2WH7EJL/bundle.json","state":"https://pith.science/pith/4VNFMUH45DZCGVV4NGE2WH7EJL/state.json","well_known_bundle":"https://pith.science/.well-known/pith/4VNFMUH45DZCGVV4NGE2WH7EJL/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:4VNFMUH45DZCGVV4NGE2WH7EJL","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":"897ed139f5a6eb3a35bcbc31956f530c15f2289ee932ea9cca4e2f3d3e4bba16","cross_cats_sorted":["astro-ph.GA"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2016-02-14T01:33:41Z","title_canon_sha256":"7ed6354d31f3dd6cf7f756757ca6b2b72569b23751ea16e02adf75d9b4785c05"},"schema_version":"1.0","source":{"id":"1602.04407","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1602.04407","created_at":"2026-05-18T00:36:33Z"},{"alias_kind":"arxiv_version","alias_value":"1602.04407v3","created_at":"2026-05-18T00:36:33Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1602.04407","created_at":"2026-05-18T00:36:33Z"},{"alias_kind":"pith_short_12","alias_value":"4VNFMUH45DZC","created_at":"2026-05-18T12:29:58Z"},{"alias_kind":"pith_short_16","alias_value":"4VNFMUH45DZCGVV4","created_at":"2026-05-18T12:29:58Z"},{"alias_kind":"pith_short_8","alias_value":"4VNFMUH4","created_at":"2026-05-18T12:29:58Z"}],"graph_snapshots":[{"event_id":"sha256:7b2ca5ee509df41d11650c25bb9d518daab17c051f1f50516c9c6bd8ed3573f0","target":"graph","created_at":"2026-05-18T00:36:33Z","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"},"paper":{"abstract_excerpt":"Understanding the detailed process of cosmic reionization is one of the remaining problems in astrophysics and cosmology. Here we construct a model of cosmic reionization that includes contribution from high-$z$ galaxies and active galactic nuclei (AGNs), and calculate the reionization and thermal histories with the model. To keep the model to be general and realistic, we vary the escape fraction of ionizing photons, $f_{\\rm esc}$, and the faint-end slope of the AGN luminosity function at high redshifts, $\\alpha_{\\rm hz}$, within the constraints from the observed cosmic star formation history ","authors_text":"Hayato Shimabukuro, Hiroyuki Tashiro, Keitaro Takahashi, Kenji Hasegawa, Kiyotomo Ichiki, Shintaro Yoshiura","cross_cats":["astro-ph.GA"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2016-02-14T01:33:41Z","title":"Constraining the Contribution of Galaxies and Active Galactic Nuclei to Cosmic Reionization"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1602.04407","kind":"arxiv","version":3},"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":"sha256:270ba4cabd4c3f269c901d979f6da30752a3ea80573dc396d4adb30df5a88932","target":"record","created_at":"2026-05-18T00:36:33Z","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":"897ed139f5a6eb3a35bcbc31956f530c15f2289ee932ea9cca4e2f3d3e4bba16","cross_cats_sorted":["astro-ph.GA"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2016-02-14T01:33:41Z","title_canon_sha256":"7ed6354d31f3dd6cf7f756757ca6b2b72569b23751ea16e02adf75d9b4785c05"},"schema_version":"1.0","source":{"id":"1602.04407","kind":"arxiv","version":3}},"canonical_sha256":"e55a5650fce8f22356bc6989ab1fe44ac766c5c151548d74780d13fb0d116b57","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"e55a5650fce8f22356bc6989ab1fe44ac766c5c151548d74780d13fb0d116b57","first_computed_at":"2026-05-18T00:36:33.449576Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:36:33.449576Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"ANNGyGmwFACbnWw0u/+SL25bNemSoFSLnXOMdIrveo9p9Skq4atVfufw3R/JQ5a0vqYnyVSc57yoT3p1XMivCA==","signature_status":"signed_v1","signed_at":"2026-05-18T00:36:33.450012Z","signed_message":"canonical_sha256_bytes"},"source_id":"1602.04407","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:270ba4cabd4c3f269c901d979f6da30752a3ea80573dc396d4adb30df5a88932","sha256:7b2ca5ee509df41d11650c25bb9d518daab17c051f1f50516c9c6bd8ed3573f0"],"state_sha256":"792278f97cf85c59378f972c3f8d393b3050976b5ca9b185b039cb3810e8b874"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"b0G43qcBdKcOVHWVIvXLOjY7CBq/bKrNfUdspZvJD/ySJgoNTjR6odKk9L76r7b9y4biJe2mDXyHQaZGqLGfDw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-02T22:59:18.006798Z","bundle_sha256":"eea647b774ad87a25daad7cfe838387eb0c9e2c1c6f84c52ca788c90e20db44c"}}