{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2026:HCGR5KWNPT645C4GYBLWHFRXPO","short_pith_number":"pith:HCGR5KWN","canonical_record":{"source":{"id":"2605.28777","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.GA","submitted_at":"2026-05-27T17:37:26Z","cross_cats_sorted":["astro-ph.CO"],"title_canon_sha256":"67d6179e5ca4c3e758fd96fe0f75e7fd50bb49fd277d7df0249c2b69d5b85d3f","abstract_canon_sha256":"8f97b265875ae0a3f83ee48d9e2ad95ea3612fdd32b11dae21de1aad27dc5a0d"},"schema_version":"1.0"},"canonical_sha256":"388d1eaacd7cfdce8b86c0576396377bac5e90ee502ab74564509ba159615075","source":{"kind":"arxiv","id":"2605.28777","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2605.28777","created_at":"2026-05-28T02:05:02Z"},{"alias_kind":"arxiv_version","alias_value":"2605.28777v1","created_at":"2026-05-28T02:05:02Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2605.28777","created_at":"2026-05-28T02:05:02Z"},{"alias_kind":"pith_short_12","alias_value":"HCGR5KWNPT64","created_at":"2026-05-28T02:05:02Z"},{"alias_kind":"pith_short_16","alias_value":"HCGR5KWNPT645C4G","created_at":"2026-05-28T02:05:02Z"},{"alias_kind":"pith_short_8","alias_value":"HCGR5KWN","created_at":"2026-05-28T02:05:02Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2026:HCGR5KWNPT645C4GYBLWHFRXPO","target":"record","payload":{"canonical_record":{"source":{"id":"2605.28777","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.GA","submitted_at":"2026-05-27T17:37:26Z","cross_cats_sorted":["astro-ph.CO"],"title_canon_sha256":"67d6179e5ca4c3e758fd96fe0f75e7fd50bb49fd277d7df0249c2b69d5b85d3f","abstract_canon_sha256":"8f97b265875ae0a3f83ee48d9e2ad95ea3612fdd32b11dae21de1aad27dc5a0d"},"schema_version":"1.0"},"canonical_sha256":"388d1eaacd7cfdce8b86c0576396377bac5e90ee502ab74564509ba159615075","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-28T02:05:02.829978Z","signature_b64":"0Wfl/8Fhhae+ioZckmJaXEjADNUmZLfiPUksVB36VFWfPv5W5+5+HFpnhFbaJ8KSMiFmrG/UjaI3L9c/I23mBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"388d1eaacd7cfdce8b86c0576396377bac5e90ee502ab74564509ba159615075","last_reissued_at":"2026-05-28T02:05:02.829545Z","signature_status":"signed_v1","first_computed_at":"2026-05-28T02:05:02.829545Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2605.28777","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":"2026-05-28T02:05:02Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"GEISBeQB2hb1O+GgjTgWX0ZGDqmkXZFuVhuKaGM8Y1fmd0xVVwF4Or8tnKuQr1pgAoj8lD0I71+NwmFu4T/UAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T15:25:28.951630Z"},"content_sha256":"a5d3e2a90b696c1f614cbf6822a66b7ae556b7b3791a1305a4d76a7a33d9ff02","schema_version":"1.0","event_id":"sha256:a5d3e2a90b696c1f614cbf6822a66b7ae556b7b3791a1305a4d76a7a33d9ff02"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2026:HCGR5KWNPT645C4GYBLWHFRXPO","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The formation of supermassive black holes from Population III.1 seeds. IV. Self-regulated seeding from supermassive star ionizing feedback","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["astro-ph.CO"],"primary_cat":"astro-ph.GA","authors_text":"Benjamin Keller, Devesh Nandal, Jasbir Singh, Jonathan C. Tan, Mahsa Sanati, Maya A. Petkova, Pierluigi Monaco, Vieri Cammelli","submitted_at":"2026-05-27T17:37:26Z","abstract_excerpt":"Supermassive Population III.1 stars, i.e., formed from pristine, metal-free gas leading to conditions where dark matter annihilation heating is significant, have been proposed as the progenitors of supermassive black holes (SMBHs) in the early universe ($z \\sim 20-40$). Since such Pop III.1 stars only form from non-irradiated gas in dark matter minihalos, they are predicted to appear isolated from each other and other sources of feedback. The previous papers in this series used the isolation distance of Pop III.1 stars as a free parameter to seed SMBH in cosmological simulations of dark matter"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2605.28777","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/2605.28777/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":"2026-05-28T02:05:02Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"8bqXXx2V/VUYTgcCxT0p/ruh7G51Sasz+pkyKe4XB/X7uspDGt7qMw9QeyChUYiMUo5JOtsU2KW9310sgOz7Aw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T15:25:28.952236Z"},"content_sha256":"9c254423bed1052cae02f0c5240c958220741ae99849f199c276243ef56974d5","schema_version":"1.0","event_id":"sha256:9c254423bed1052cae02f0c5240c958220741ae99849f199c276243ef56974d5"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/HCGR5KWNPT645C4GYBLWHFRXPO/bundle.json","state_url":"https://pith.science/pith/HCGR5KWNPT645C4GYBLWHFRXPO/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/HCGR5KWNPT645C4GYBLWHFRXPO/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":"2026-05-30T15:25:28Z","links":{"resolver":"https://pith.science/pith/HCGR5KWNPT645C4GYBLWHFRXPO","bundle":"https://pith.science/pith/HCGR5KWNPT645C4GYBLWHFRXPO/bundle.json","state":"https://pith.science/pith/HCGR5KWNPT645C4GYBLWHFRXPO/state.json","well_known_bundle":"https://pith.science/.well-known/pith/HCGR5KWNPT645C4GYBLWHFRXPO/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:HCGR5KWNPT645C4GYBLWHFRXPO","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":"8f97b265875ae0a3f83ee48d9e2ad95ea3612fdd32b11dae21de1aad27dc5a0d","cross_cats_sorted":["astro-ph.CO"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.GA","submitted_at":"2026-05-27T17:37:26Z","title_canon_sha256":"67d6179e5ca4c3e758fd96fe0f75e7fd50bb49fd277d7df0249c2b69d5b85d3f"},"schema_version":"1.0","source":{"id":"2605.28777","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2605.28777","created_at":"2026-05-28T02:05:02Z"},{"alias_kind":"arxiv_version","alias_value":"2605.28777v1","created_at":"2026-05-28T02:05:02Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2605.28777","created_at":"2026-05-28T02:05:02Z"},{"alias_kind":"pith_short_12","alias_value":"HCGR5KWNPT64","created_at":"2026-05-28T02:05:02Z"},{"alias_kind":"pith_short_16","alias_value":"HCGR5KWNPT645C4G","created_at":"2026-05-28T02:05:02Z"},{"alias_kind":"pith_short_8","alias_value":"HCGR5KWN","created_at":"2026-05-28T02:05:02Z"}],"graph_snapshots":[{"event_id":"sha256:9c254423bed1052cae02f0c5240c958220741ae99849f199c276243ef56974d5","target":"graph","created_at":"2026-05-28T02:05:02Z","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/2605.28777/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Supermassive Population III.1 stars, i.e., formed from pristine, metal-free gas leading to conditions where dark matter annihilation heating is significant, have been proposed as the progenitors of supermassive black holes (SMBHs) in the early universe ($z \\sim 20-40$). Since such Pop III.1 stars only form from non-irradiated gas in dark matter minihalos, they are predicted to appear isolated from each other and other sources of feedback. The previous papers in this series used the isolation distance of Pop III.1 stars as a free parameter to seed SMBH in cosmological simulations of dark matter","authors_text":"Benjamin Keller, Devesh Nandal, Jasbir Singh, Jonathan C. Tan, Mahsa Sanati, Maya A. Petkova, Pierluigi Monaco, Vieri Cammelli","cross_cats":["astro-ph.CO"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.GA","submitted_at":"2026-05-27T17:37:26Z","title":"The formation of supermassive black holes from Population III.1 seeds. IV. Self-regulated seeding from supermassive star ionizing feedback"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2605.28777","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:a5d3e2a90b696c1f614cbf6822a66b7ae556b7b3791a1305a4d76a7a33d9ff02","target":"record","created_at":"2026-05-28T02:05:02Z","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":"8f97b265875ae0a3f83ee48d9e2ad95ea3612fdd32b11dae21de1aad27dc5a0d","cross_cats_sorted":["astro-ph.CO"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.GA","submitted_at":"2026-05-27T17:37:26Z","title_canon_sha256":"67d6179e5ca4c3e758fd96fe0f75e7fd50bb49fd277d7df0249c2b69d5b85d3f"},"schema_version":"1.0","source":{"id":"2605.28777","kind":"arxiv","version":1}},"canonical_sha256":"388d1eaacd7cfdce8b86c0576396377bac5e90ee502ab74564509ba159615075","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"388d1eaacd7cfdce8b86c0576396377bac5e90ee502ab74564509ba159615075","first_computed_at":"2026-05-28T02:05:02.829545Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-28T02:05:02.829545Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"0Wfl/8Fhhae+ioZckmJaXEjADNUmZLfiPUksVB36VFWfPv5W5+5+HFpnhFbaJ8KSMiFmrG/UjaI3L9c/I23mBQ==","signature_status":"signed_v1","signed_at":"2026-05-28T02:05:02.829978Z","signed_message":"canonical_sha256_bytes"},"source_id":"2605.28777","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:a5d3e2a90b696c1f614cbf6822a66b7ae556b7b3791a1305a4d76a7a33d9ff02","sha256:9c254423bed1052cae02f0c5240c958220741ae99849f199c276243ef56974d5"],"state_sha256":"060e9163e6884e9be6c4e51143eaadae3b5715f40e5a4bc41e0213e8fc1e6752"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"mji89T6mh+h819o2n6AozqHFnu8b/bLZabeWInuc8ScwiIMqyUEAMMRf4g6D7ahqcB+bF8hwPfnnRg8pxVQxAA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-30T15:25:28.954490Z","bundle_sha256":"52c73cc80092f29b912936f2a5836c8877d94ad599f24a7ba1947ca9c124a557"}}