{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2025:PJ2UYLGPL2L7VGCII3GBINFWPB","short_pith_number":"pith:PJ2UYLGP","canonical_record":{"source":{"id":"2504.19422","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.CO","submitted_at":"2025-04-28T02:14:02Z","cross_cats_sorted":[],"title_canon_sha256":"f552196546266129abb8331d28eea85a15c6372b97bb171d931029ef804b4c4e","abstract_canon_sha256":"e78fa7e8a3aa36bfb267ec7784911601d70cef4736b31bd1bcf0f734a8fc5b5d"},"schema_version":"1.0"},"canonical_sha256":"7a754c2ccf5e97fa984846cc1434b6784c65eb5243582e2f589cab7e451c8e26","source":{"kind":"arxiv","id":"2504.19422","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2504.19422","created_at":"2026-07-05T10:54:57Z"},{"alias_kind":"arxiv_version","alias_value":"2504.19422v1","created_at":"2026-07-05T10:54:57Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2504.19422","created_at":"2026-07-05T10:54:57Z"},{"alias_kind":"pith_short_12","alias_value":"PJ2UYLGPL2L7","created_at":"2026-07-05T10:54:57Z"},{"alias_kind":"pith_short_16","alias_value":"PJ2UYLGPL2L7VGCI","created_at":"2026-07-05T10:54:57Z"},{"alias_kind":"pith_short_8","alias_value":"PJ2UYLGP","created_at":"2026-07-05T10:54:57Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2025:PJ2UYLGPL2L7VGCII3GBINFWPB","target":"record","payload":{"canonical_record":{"source":{"id":"2504.19422","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.CO","submitted_at":"2025-04-28T02:14:02Z","cross_cats_sorted":[],"title_canon_sha256":"f552196546266129abb8331d28eea85a15c6372b97bb171d931029ef804b4c4e","abstract_canon_sha256":"e78fa7e8a3aa36bfb267ec7784911601d70cef4736b31bd1bcf0f734a8fc5b5d"},"schema_version":"1.0"},"canonical_sha256":"7a754c2ccf5e97fa984846cc1434b6784c65eb5243582e2f589cab7e451c8e26","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T10:54:57.010548Z","signature_b64":"Hi2O+3xmz8+mbgU99VgbTro9Droo6CLkbp/i7y7KV/XYC3bc5IaES8deB/5ddo/XfrLwk3SiKFjyjzWLBX1FAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"7a754c2ccf5e97fa984846cc1434b6784c65eb5243582e2f589cab7e451c8e26","last_reissued_at":"2026-07-05T10:54:57.010123Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T10:54:57.010123Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2504.19422","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":"2026-07-05T10:54:57Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"LD81MZ1B7DM68OybX88aynoVRLVHD2QUsSkaIhIMlKjqlpYtfD+bOAnb49zlUnYBf66bwOxG2GkEYE05W4STCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-19T23:58:38.426283Z"},"content_sha256":"d674309a518f98e43d6d119d30a97780b763deadb4188618666b5f0600061662","schema_version":"1.0","event_id":"sha256:d674309a518f98e43d6d119d30a97780b763deadb4188618666b5f0600061662"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2025:PJ2UYLGPL2L7VGCII3GBINFWPB","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Constraints on the galaxy formation models during epoch of reionization with high redshift observations","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"Anshuman Acharya, Benedetta Ciardi, Ming Li, Qi Guo, Qing-Bo Ma, Xiao-Rong Chen, Xin Wang","submitted_at":"2025-04-28T02:14:02Z","abstract_excerpt":"We use high resolution N-body dark matter simulations and L-Galaxies semi-analytical galaxy formation models to explore the high-$z$ galaxy properties and estimate the budget of ionizing photons. The parameters within L-Galaxies are obtained using a Markov Chain Monte Carlo (MCMC) method with high-$z$ galaxy observations from JWST and other telescopes. We consider two versions of L-Galaxies with and without dust correction on galaxy UV luminosities. With the best-fit parameters, both L-Galaxies 2015 and L-Galaxies 2020 reproduce well observations of UV luminosity functions, stellar mass functi"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2504.19422","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/2504.19422/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":"2026-07-05T10:54:57Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"GUxwktKuhr6QGW1IA3HXd8WuWhd+PUYi4+Jt0eoY0vaAMC+YUiKoYq00ky3MiO7PfGtfD6RCrWO2MzoMfd+TCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-19T23:58:38.426890Z"},"content_sha256":"1f60414305e28651af11a7d50afa9c6a32fa38a1fbbc4a662bcbe7ca5e876587","schema_version":"1.0","event_id":"sha256:1f60414305e28651af11a7d50afa9c6a32fa38a1fbbc4a662bcbe7ca5e876587"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/PJ2UYLGPL2L7VGCII3GBINFWPB/bundle.json","state_url":"https://pith.science/pith/PJ2UYLGPL2L7VGCII3GBINFWPB/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/PJ2UYLGPL2L7VGCII3GBINFWPB/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":"2026-08-19T23:58:38Z","links":{"resolver":"https://pith.science/pith/PJ2UYLGPL2L7VGCII3GBINFWPB","bundle":"https://pith.science/pith/PJ2UYLGPL2L7VGCII3GBINFWPB/bundle.json","state":"https://pith.science/pith/PJ2UYLGPL2L7VGCII3GBINFWPB/state.json","well_known_bundle":"https://pith.science/.well-known/pith/PJ2UYLGPL2L7VGCII3GBINFWPB/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2025:PJ2UYLGPL2L7VGCII3GBINFWPB","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":"e78fa7e8a3aa36bfb267ec7784911601d70cef4736b31bd1bcf0f734a8fc5b5d","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.CO","submitted_at":"2025-04-28T02:14:02Z","title_canon_sha256":"f552196546266129abb8331d28eea85a15c6372b97bb171d931029ef804b4c4e"},"schema_version":"1.0","source":{"id":"2504.19422","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2504.19422","created_at":"2026-07-05T10:54:57Z"},{"alias_kind":"arxiv_version","alias_value":"2504.19422v1","created_at":"2026-07-05T10:54:57Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2504.19422","created_at":"2026-07-05T10:54:57Z"},{"alias_kind":"pith_short_12","alias_value":"PJ2UYLGPL2L7","created_at":"2026-07-05T10:54:57Z"},{"alias_kind":"pith_short_16","alias_value":"PJ2UYLGPL2L7VGCI","created_at":"2026-07-05T10:54:57Z"},{"alias_kind":"pith_short_8","alias_value":"PJ2UYLGP","created_at":"2026-07-05T10:54:57Z"}],"graph_snapshots":[{"event_id":"sha256:1f60414305e28651af11a7d50afa9c6a32fa38a1fbbc4a662bcbe7ca5e876587","target":"graph","created_at":"2026-07-05T10:54:57Z","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/2504.19422/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We use high resolution N-body dark matter simulations and L-Galaxies semi-analytical galaxy formation models to explore the high-$z$ galaxy properties and estimate the budget of ionizing photons. The parameters within L-Galaxies are obtained using a Markov Chain Monte Carlo (MCMC) method with high-$z$ galaxy observations from JWST and other telescopes. We consider two versions of L-Galaxies with and without dust correction on galaxy UV luminosities. With the best-fit parameters, both L-Galaxies 2015 and L-Galaxies 2020 reproduce well observations of UV luminosity functions, stellar mass functi","authors_text":"Anshuman Acharya, Benedetta Ciardi, Ming Li, Qi Guo, Qing-Bo Ma, Xiao-Rong Chen, Xin Wang","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.CO","submitted_at":"2025-04-28T02:14:02Z","title":"Constraints on the galaxy formation models during epoch of reionization with high redshift observations"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2504.19422","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:d674309a518f98e43d6d119d30a97780b763deadb4188618666b5f0600061662","target":"record","created_at":"2026-07-05T10:54:57Z","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":"e78fa7e8a3aa36bfb267ec7784911601d70cef4736b31bd1bcf0f734a8fc5b5d","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.CO","submitted_at":"2025-04-28T02:14:02Z","title_canon_sha256":"f552196546266129abb8331d28eea85a15c6372b97bb171d931029ef804b4c4e"},"schema_version":"1.0","source":{"id":"2504.19422","kind":"arxiv","version":1}},"canonical_sha256":"7a754c2ccf5e97fa984846cc1434b6784c65eb5243582e2f589cab7e451c8e26","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"7a754c2ccf5e97fa984846cc1434b6784c65eb5243582e2f589cab7e451c8e26","first_computed_at":"2026-07-05T10:54:57.010123Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T10:54:57.010123Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Hi2O+3xmz8+mbgU99VgbTro9Droo6CLkbp/i7y7KV/XYC3bc5IaES8deB/5ddo/XfrLwk3SiKFjyjzWLBX1FAg==","signature_status":"signed_v1","signed_at":"2026-07-05T10:54:57.010548Z","signed_message":"canonical_sha256_bytes"},"source_id":"2504.19422","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:d674309a518f98e43d6d119d30a97780b763deadb4188618666b5f0600061662","sha256:1f60414305e28651af11a7d50afa9c6a32fa38a1fbbc4a662bcbe7ca5e876587"],"state_sha256":"f3e8330a7a76303cfab274303cff448ed809ac1ea6f7cbe9eea55bc27dd2c15c"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"pveMRFJj7HbTZG4Leh9aWYejmHhMqdMWtzryNJ/xZJbETWWda6lSIhDOpt4tfaHbvfv1pDPXooJCB2oVE+PdCg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-19T23:58:38.431997Z","bundle_sha256":"e71bac1ca8a2c07ffb9b3fb1d96cc1e31d3a19be07fe69e579b988e2ac6d2912"}}