{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2026:T3GJGOWSZMPWWCDMNXTY2AIAJE","short_pith_number":"pith:T3GJGOWS","canonical_record":{"source":{"id":"2607.15341","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.CO","submitted_at":"2026-07-16T18:00:27Z","cross_cats_sorted":[],"title_canon_sha256":"7ba06c4fe2a198920724ccb65bad47e8fffbf3efc2ece1fa8c7314044bbc08a9","abstract_canon_sha256":"b5a9a5ea0f75d7a62acbd039bc1052fc95a26839f3e52e6bdf30d75ee5b73c06"},"schema_version":"1.0"},"canonical_sha256":"9ecc933ad2cb1f6b086c6de78d01004926bde6b531eaee862f4b2ad3038609d5","source":{"kind":"arxiv","id":"2607.15341","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2607.15341","created_at":"2026-07-20T00:18:28Z"},{"alias_kind":"arxiv_version","alias_value":"2607.15341v1","created_at":"2026-07-20T00:18:28Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2607.15341","created_at":"2026-07-20T00:18:28Z"},{"alias_kind":"pith_short_12","alias_value":"T3GJGOWSZMPW","created_at":"2026-07-20T00:18:28Z"},{"alias_kind":"pith_short_16","alias_value":"T3GJGOWSZMPWWCDM","created_at":"2026-07-20T00:18:28Z"},{"alias_kind":"pith_short_8","alias_value":"T3GJGOWS","created_at":"2026-07-20T00:18:28Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2026:T3GJGOWSZMPWWCDMNXTY2AIAJE","target":"record","payload":{"canonical_record":{"source":{"id":"2607.15341","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.CO","submitted_at":"2026-07-16T18:00:27Z","cross_cats_sorted":[],"title_canon_sha256":"7ba06c4fe2a198920724ccb65bad47e8fffbf3efc2ece1fa8c7314044bbc08a9","abstract_canon_sha256":"b5a9a5ea0f75d7a62acbd039bc1052fc95a26839f3e52e6bdf30d75ee5b73c06"},"schema_version":"1.0"},"canonical_sha256":"9ecc933ad2cb1f6b086c6de78d01004926bde6b531eaee862f4b2ad3038609d5","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-20T00:18:28.034144Z","signature_b64":"qlLo2GmMy8rxmYM10IGusvUetSrCaREwrfSpSMo7ddZMJbrCqNDV0OJClgyq5pl+AAHX4eocUSekoGK4PGxcBg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"9ecc933ad2cb1f6b086c6de78d01004926bde6b531eaee862f4b2ad3038609d5","last_reissued_at":"2026-07-20T00:18:28.033283Z","signature_status":"signed_v1","first_computed_at":"2026-07-20T00:18:28.033283Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2607.15341","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":"2026-07-20T00:18:28Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Ths3pr5mU1wwZOS2gGfFYvlQOr02YrN86F7Il8oYxvtkNkkO7MmIMq+E/thOyg4pn4w88zESyeyA7aKJ12LsDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-02T20:49:48.289199Z"},"content_sha256":"0958e34b31b1f4bb449dd6685105ebb824a0cb2ace55066ab84282b255956f6b","schema_version":"1.0","event_id":"sha256:0958e34b31b1f4bb449dd6685105ebb824a0cb2ace55066ab84282b255956f6b"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2026:T3GJGOWSZMPWWCDMNXTY2AIAJE","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Forest without Trees is still Fruitful: Constraints on the thermal state of the neutral IGM at $z\\approx5.6$ with the 21-cm forest power spectrum","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"Abhirup Datta (IIT Indore), Arnab Chakraborty (McGill University), Benedetta Ciardi (MPA), Cathryn M. Trott (Curtin University), Emma V. Ryan-Weber (Swinburne University of Technology), Girish Kulkarni (TIFR), James S. Bolton (University of Nottingham), Matteo Viel (SISSA), Nirupam Roy (IISc Bangalore), Nithyanandan Thyagarajan (CSIRO), Rashmi Sagar (IIT Indore), Soumak Maitra (TIFR), Tom\\'a\\v{s} \\v{S}oltinsk\\'y (INAF-OATs)","submitted_at":"2026-07-16T18:00:27Z","abstract_excerpt":"Neutral regions of the intergalactic medium (IGM) during the Epoch of Reionization (EoR) remain largely unexplored due to the limitations of existing probes. Owing to discoveries of numerous high-redshift radio-bright sources, the 21-cm forest, a series of absorption features imprinted by the neutral IGM in the spectra of such sources, now offers an attractive probe of the thermal and ionization state of the predominantly neutral IGM at $z\\gtrsim5.5$. We analyse archival upgraded Giant Metrewave Radio Telescope (uGMRT) observations of J352-15, the brightest known radio-loud quasar in the EoR ("},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2607.15341","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/2607.15341/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":"2026-07-20T00:18:28Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"v3qdprrEfPiLHQCfRxDGEp9FcX+TOvrQhTRBSSql0u6YOqTeJdfzKGJfV+wPpwEZ/e9hANNpchpiaMI2V0xpBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-02T20:49:48.289730Z"},"content_sha256":"a893a5e537b593e2cbc5eb71bcd5a735ade0c3de16322ffea565cfd79e4cf65c","schema_version":"1.0","event_id":"sha256:a893a5e537b593e2cbc5eb71bcd5a735ade0c3de16322ffea565cfd79e4cf65c"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/T3GJGOWSZMPWWCDMNXTY2AIAJE/bundle.json","state_url":"https://pith.science/pith/T3GJGOWSZMPWWCDMNXTY2AIAJE/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/T3GJGOWSZMPWWCDMNXTY2AIAJE/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":"2026-08-02T20:49:48Z","links":{"resolver":"https://pith.science/pith/T3GJGOWSZMPWWCDMNXTY2AIAJE","bundle":"https://pith.science/pith/T3GJGOWSZMPWWCDMNXTY2AIAJE/bundle.json","state":"https://pith.science/pith/T3GJGOWSZMPWWCDMNXTY2AIAJE/state.json","well_known_bundle":"https://pith.science/.well-known/pith/T3GJGOWSZMPWWCDMNXTY2AIAJE/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:T3GJGOWSZMPWWCDMNXTY2AIAJE","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":"b5a9a5ea0f75d7a62acbd039bc1052fc95a26839f3e52e6bdf30d75ee5b73c06","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.CO","submitted_at":"2026-07-16T18:00:27Z","title_canon_sha256":"7ba06c4fe2a198920724ccb65bad47e8fffbf3efc2ece1fa8c7314044bbc08a9"},"schema_version":"1.0","source":{"id":"2607.15341","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2607.15341","created_at":"2026-07-20T00:18:28Z"},{"alias_kind":"arxiv_version","alias_value":"2607.15341v1","created_at":"2026-07-20T00:18:28Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2607.15341","created_at":"2026-07-20T00:18:28Z"},{"alias_kind":"pith_short_12","alias_value":"T3GJGOWSZMPW","created_at":"2026-07-20T00:18:28Z"},{"alias_kind":"pith_short_16","alias_value":"T3GJGOWSZMPWWCDM","created_at":"2026-07-20T00:18:28Z"},{"alias_kind":"pith_short_8","alias_value":"T3GJGOWS","created_at":"2026-07-20T00:18:28Z"}],"graph_snapshots":[{"event_id":"sha256:a893a5e537b593e2cbc5eb71bcd5a735ade0c3de16322ffea565cfd79e4cf65c","target":"graph","created_at":"2026-07-20T00:18:28Z","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/2607.15341/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Neutral regions of the intergalactic medium (IGM) during the Epoch of Reionization (EoR) remain largely unexplored due to the limitations of existing probes. Owing to discoveries of numerous high-redshift radio-bright sources, the 21-cm forest, a series of absorption features imprinted by the neutral IGM in the spectra of such sources, now offers an attractive probe of the thermal and ionization state of the predominantly neutral IGM at $z\\gtrsim5.5$. We analyse archival upgraded Giant Metrewave Radio Telescope (uGMRT) observations of J352-15, the brightest known radio-loud quasar in the EoR (","authors_text":"Abhirup Datta (IIT Indore), Arnab Chakraborty (McGill University), Benedetta Ciardi (MPA), Cathryn M. Trott (Curtin University), Emma V. Ryan-Weber (Swinburne University of Technology), Girish Kulkarni (TIFR), James S. Bolton (University of Nottingham), Matteo Viel (SISSA), Nirupam Roy (IISc Bangalore), Nithyanandan Thyagarajan (CSIRO), Rashmi Sagar (IIT Indore), Soumak Maitra (TIFR), Tom\\'a\\v{s} \\v{S}oltinsk\\'y (INAF-OATs)","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.CO","submitted_at":"2026-07-16T18:00:27Z","title":"Forest without Trees is still Fruitful: Constraints on the thermal state of the neutral IGM at $z\\approx5.6$ with the 21-cm forest power spectrum"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2607.15341","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":"sha256:0958e34b31b1f4bb449dd6685105ebb824a0cb2ace55066ab84282b255956f6b","target":"record","created_at":"2026-07-20T00:18:28Z","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":"b5a9a5ea0f75d7a62acbd039bc1052fc95a26839f3e52e6bdf30d75ee5b73c06","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.CO","submitted_at":"2026-07-16T18:00:27Z","title_canon_sha256":"7ba06c4fe2a198920724ccb65bad47e8fffbf3efc2ece1fa8c7314044bbc08a9"},"schema_version":"1.0","source":{"id":"2607.15341","kind":"arxiv","version":1}},"canonical_sha256":"9ecc933ad2cb1f6b086c6de78d01004926bde6b531eaee862f4b2ad3038609d5","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"9ecc933ad2cb1f6b086c6de78d01004926bde6b531eaee862f4b2ad3038609d5","first_computed_at":"2026-07-20T00:18:28.033283Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-20T00:18:28.033283Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"qlLo2GmMy8rxmYM10IGusvUetSrCaREwrfSpSMo7ddZMJbrCqNDV0OJClgyq5pl+AAHX4eocUSekoGK4PGxcBg==","signature_status":"signed_v1","signed_at":"2026-07-20T00:18:28.034144Z","signed_message":"canonical_sha256_bytes"},"source_id":"2607.15341","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:0958e34b31b1f4bb449dd6685105ebb824a0cb2ace55066ab84282b255956f6b","sha256:a893a5e537b593e2cbc5eb71bcd5a735ade0c3de16322ffea565cfd79e4cf65c"],"state_sha256":"23a4add167628f4f6147094a1d59106219c40b3b4ad8c78daee4921cb74dc2c9"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"OA+Zez1dPZDii7nae0MdUHAe/6r41qCDAvTQmlXXyexutpaaPUqR2bIpJz2JIGMv4xDvOIbm+1e7+RfYbuxWBQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-02T20:49:48.293538Z","bundle_sha256":"5d38d89b4987d2483045640145f1449990367b653769e213e394a19dff1cb94e"}}