{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2025:VCSGSRF5MGEYQHEKYJXRUF334P","short_pith_number":"pith:VCSGSRF5","canonical_record":{"source":{"id":"2509.08886","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2025-09-10T18:00:03Z","cross_cats_sorted":[],"title_canon_sha256":"8f986420c03d79743ed15df150478559f264c4a5148ae50d85c114195f18794b","abstract_canon_sha256":"9cac587c95bfe450bdd9b9823f0110d6993ba6e685e8a6dcb6f1ea4bf40dace4"},"schema_version":"1.0"},"canonical_sha256":"a8a46944bd6189881c8ac26f1a177be3c2fe1cb6b843f992763f7ffb4fa9f560","source":{"kind":"arxiv","id":"2509.08886","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2509.08886","created_at":"2026-06-05T01:15:16Z"},{"alias_kind":"arxiv_version","alias_value":"2509.08886v2","created_at":"2026-06-05T01:15:16Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2509.08886","created_at":"2026-06-05T01:15:16Z"},{"alias_kind":"pith_short_12","alias_value":"VCSGSRF5MGEY","created_at":"2026-06-05T01:15:16Z"},{"alias_kind":"pith_short_16","alias_value":"VCSGSRF5MGEYQHEK","created_at":"2026-06-05T01:15:16Z"},{"alias_kind":"pith_short_8","alias_value":"VCSGSRF5","created_at":"2026-06-05T01:15:16Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2025:VCSGSRF5MGEYQHEKYJXRUF334P","target":"record","payload":{"canonical_record":{"source":{"id":"2509.08886","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2025-09-10T18:00:03Z","cross_cats_sorted":[],"title_canon_sha256":"8f986420c03d79743ed15df150478559f264c4a5148ae50d85c114195f18794b","abstract_canon_sha256":"9cac587c95bfe450bdd9b9823f0110d6993ba6e685e8a6dcb6f1ea4bf40dace4"},"schema_version":"1.0"},"canonical_sha256":"a8a46944bd6189881c8ac26f1a177be3c2fe1cb6b843f992763f7ffb4fa9f560","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-06-05T01:15:16.060301Z","signature_b64":"39Hl4MpGRyjEuBXfhOHgBFhINAWgtRFX0QJyx6jVR0EKhil4AmXxMCLElbtFY1v9KefOOxusZ2H22a9enlyrDw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"a8a46944bd6189881c8ac26f1a177be3c2fe1cb6b843f992763f7ffb4fa9f560","last_reissued_at":"2026-06-05T01:15:16.059637Z","signature_status":"signed_v1","first_computed_at":"2026-06-05T01:15:16.059637Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2509.08886","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-06-05T01:15:16Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"C+VRi+9WU7kAaw6WROVNuI8aA5wPprdhDYXDL10//DgXcPwIYot1YRMjiZ9JQzkrU1L2qgaZO8wPFMKnRUzICQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-06T08:37:42.323288Z"},"content_sha256":"3add45f0b8ae3960ebd81339011df108b79eb374c494f2e342b9c351d05c193f","schema_version":"1.0","event_id":"sha256:3add45f0b8ae3960ebd81339011df108b79eb374c494f2e342b9c351d05c193f"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2025:VCSGSRF5MGEYQHEKYJXRUF334P","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"A New Boundary Condition on Reionization","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"Ely D. Kovetz, Emilie Th\\'elie, Julian B. Munoz, Sarah Libanore, Yonatan Sklansky","submitted_at":"2025-09-10T18:00:03Z","abstract_excerpt":"The epoch of reionization (EoR) marks the last phase transition of hydrogen in our Universe, as it evolves from cold and neutral to hot and ionized in the intergalactic medium (IGM). While its endpoint and duration can be estimated from current observations, albeit with large uncertainties, there is no known avenue to constrain its onset. We propose a novel method based on the Pearson cross-correlation coefficient between 21-cm brightness temperature maps and line-intensity maps tracing star-formation (e.g., [OIII], CO, [CII]). This real-space estimator evolves from negative to positive as X-r"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2509.08886","kind":"arxiv","version":2},"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/2509.08886/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":"2026-06-05T01:15:16Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ZchYvnyvQ3Rgz3aaIUPGpX1wY75WOLO8nx7S1ciTaPGjTpOZkX5tkUmD4yqFG9gEli1+X0mdBjfArvI9LXyIAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-06T08:37:42.324104Z"},"content_sha256":"26bed54c7204f2da057baa5dd99abcaedd52db936ee535840be3c6ea97691595","schema_version":"1.0","event_id":"sha256:26bed54c7204f2da057baa5dd99abcaedd52db936ee535840be3c6ea97691595"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/VCSGSRF5MGEYQHEKYJXRUF334P/bundle.json","state_url":"https://pith.science/pith/VCSGSRF5MGEYQHEKYJXRUF334P/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/VCSGSRF5MGEYQHEKYJXRUF334P/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":"2026-06-06T08:37:42Z","links":{"resolver":"https://pith.science/pith/VCSGSRF5MGEYQHEKYJXRUF334P","bundle":"https://pith.science/pith/VCSGSRF5MGEYQHEKYJXRUF334P/bundle.json","state":"https://pith.science/pith/VCSGSRF5MGEYQHEKYJXRUF334P/state.json","well_known_bundle":"https://pith.science/.well-known/pith/VCSGSRF5MGEYQHEKYJXRUF334P/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2025:VCSGSRF5MGEYQHEKYJXRUF334P","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":"9cac587c95bfe450bdd9b9823f0110d6993ba6e685e8a6dcb6f1ea4bf40dace4","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2025-09-10T18:00:03Z","title_canon_sha256":"8f986420c03d79743ed15df150478559f264c4a5148ae50d85c114195f18794b"},"schema_version":"1.0","source":{"id":"2509.08886","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2509.08886","created_at":"2026-06-05T01:15:16Z"},{"alias_kind":"arxiv_version","alias_value":"2509.08886v2","created_at":"2026-06-05T01:15:16Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2509.08886","created_at":"2026-06-05T01:15:16Z"},{"alias_kind":"pith_short_12","alias_value":"VCSGSRF5MGEY","created_at":"2026-06-05T01:15:16Z"},{"alias_kind":"pith_short_16","alias_value":"VCSGSRF5MGEYQHEK","created_at":"2026-06-05T01:15:16Z"},{"alias_kind":"pith_short_8","alias_value":"VCSGSRF5","created_at":"2026-06-05T01:15:16Z"}],"graph_snapshots":[{"event_id":"sha256:26bed54c7204f2da057baa5dd99abcaedd52db936ee535840be3c6ea97691595","target":"graph","created_at":"2026-06-05T01:15:16Z","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/2509.08886/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The epoch of reionization (EoR) marks the last phase transition of hydrogen in our Universe, as it evolves from cold and neutral to hot and ionized in the intergalactic medium (IGM). While its endpoint and duration can be estimated from current observations, albeit with large uncertainties, there is no known avenue to constrain its onset. We propose a novel method based on the Pearson cross-correlation coefficient between 21-cm brightness temperature maps and line-intensity maps tracing star-formation (e.g., [OIII], CO, [CII]). This real-space estimator evolves from negative to positive as X-r","authors_text":"Ely D. Kovetz, Emilie Th\\'elie, Julian B. Munoz, Sarah Libanore, Yonatan Sklansky","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2025-09-10T18:00:03Z","title":"A New Boundary Condition on Reionization"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2509.08886","kind":"arxiv","version":2},"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":"sha256:3add45f0b8ae3960ebd81339011df108b79eb374c494f2e342b9c351d05c193f","target":"record","created_at":"2026-06-05T01:15:16Z","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":"9cac587c95bfe450bdd9b9823f0110d6993ba6e685e8a6dcb6f1ea4bf40dace4","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2025-09-10T18:00:03Z","title_canon_sha256":"8f986420c03d79743ed15df150478559f264c4a5148ae50d85c114195f18794b"},"schema_version":"1.0","source":{"id":"2509.08886","kind":"arxiv","version":2}},"canonical_sha256":"a8a46944bd6189881c8ac26f1a177be3c2fe1cb6b843f992763f7ffb4fa9f560","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"a8a46944bd6189881c8ac26f1a177be3c2fe1cb6b843f992763f7ffb4fa9f560","first_computed_at":"2026-06-05T01:15:16.059637Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-06-05T01:15:16.059637Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"39Hl4MpGRyjEuBXfhOHgBFhINAWgtRFX0QJyx6jVR0EKhil4AmXxMCLElbtFY1v9KefOOxusZ2H22a9enlyrDw==","signature_status":"signed_v1","signed_at":"2026-06-05T01:15:16.060301Z","signed_message":"canonical_sha256_bytes"},"source_id":"2509.08886","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:3add45f0b8ae3960ebd81339011df108b79eb374c494f2e342b9c351d05c193f","sha256:26bed54c7204f2da057baa5dd99abcaedd52db936ee535840be3c6ea97691595"],"state_sha256":"724d6ad7968e4c0f94377c8dfa242126c192b5f154d29523236cacd3e5528f78"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"lETqL3kFe8OfJM6AwMc3a8dMoeb3Vux5D7d5nnyZTjUlDdHnuEz722QBpOxdm/xWCOpQBr6fCTNYsKmq9SNlCQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-06T08:37:42.328165Z","bundle_sha256":"771f7d45354c648fe3a8805f250b799db87c72a1b725d7dc11d546387107cd57"}}