{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2021:O532XGKHAFKRWNBOQ6ARKDNIJJ","short_pith_number":"pith:O532XGKH","canonical_record":{"source":{"id":"2107.01633","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.CO","submitted_at":"2021-07-04T14:06:48Z","cross_cats_sorted":["astro-ph.HE","astro-ph.IM"],"title_canon_sha256":"6a508f46334143109d4cb754fe0ec6f09cb4f57c7861260354db6bb67217ebad","abstract_canon_sha256":"bfd3e928c07aff5c753ae4d984251adbcdd94e10d5da202044664ad3a6be3849"},"schema_version":"1.0"},"canonical_sha256":"7777ab994701551b342e8781150da84a44bf77fa990195bd211d473fd499c14d","source":{"kind":"arxiv","id":"2107.01633","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2107.01633","created_at":"2026-07-05T04:45:46Z"},{"alias_kind":"arxiv_version","alias_value":"2107.01633v2","created_at":"2026-07-05T04:45:46Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2107.01633","created_at":"2026-07-05T04:45:46Z"},{"alias_kind":"pith_short_12","alias_value":"O532XGKHAFKR","created_at":"2026-07-05T04:45:46Z"},{"alias_kind":"pith_short_16","alias_value":"O532XGKHAFKRWNBO","created_at":"2026-07-05T04:45:46Z"},{"alias_kind":"pith_short_8","alias_value":"O532XGKH","created_at":"2026-07-05T04:45:46Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2021:O532XGKHAFKRWNBOQ6ARKDNIJJ","target":"record","payload":{"canonical_record":{"source":{"id":"2107.01633","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.CO","submitted_at":"2021-07-04T14:06:48Z","cross_cats_sorted":["astro-ph.HE","astro-ph.IM"],"title_canon_sha256":"6a508f46334143109d4cb754fe0ec6f09cb4f57c7861260354db6bb67217ebad","abstract_canon_sha256":"bfd3e928c07aff5c753ae4d984251adbcdd94e10d5da202044664ad3a6be3849"},"schema_version":"1.0"},"canonical_sha256":"7777ab994701551b342e8781150da84a44bf77fa990195bd211d473fd499c14d","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T04:45:46.388776Z","signature_b64":"UmVV6JbuD+v+sQ/8v0kMOr/nA6OlCm674p2mno7Ko4bliO17/4st/uwaUihGorK+jRHwOm/ehI0OI8odvJKcBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"7777ab994701551b342e8781150da84a44bf77fa990195bd211d473fd499c14d","last_reissued_at":"2026-07-05T04:45:46.388143Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T04:45:46.388143Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2107.01633","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":"2026-07-05T04:45:46Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"LP+NPJkrigidfN5DGpQikq25aM59py0LdS04ckvVM7F8mDnlYNhqJCHAXAe+cm5r1TKArcevfKMPevNX0GaqDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-07T11:34:02.306501Z"},"content_sha256":"cf0229c429e413e52571bab4bdb6f2893e9c4ef37cf7f763d4dc6f39912acd80","schema_version":"1.0","event_id":"sha256:cf0229c429e413e52571bab4bdb6f2893e9c4ef37cf7f763d4dc6f39912acd80"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2021:O532XGKHAFKRWNBOQ6ARKDNIJJ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The BINGO Project I: Baryon Acoustic Oscillations from Integrated Neutral Gas Observations","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["astro-ph.HE","astro-ph.IM"],"primary_cat":"astro-ph.CO","authors_text":"Alessandro Marins, Amilcar R. Queiroz, Andre A. Costa, Bin Wang, Bruno Maffei, Camila P. Novaes, Carlos A. Wuensche, Carlos H. N. Otobone, Chenxi Shan, Clive Dickinson, Eduardo J. de Mericia, Elcio Abdalla, Elisa G. M. Ferreira, Filipe B.Abdalla, Francisco A. Brito, Frederico Vieira, Gustavo B. Silva, Haiguang Xu, Ian Browne, Jacques Delabrouille, Jiajun Zhang, Joao R. L. Santos, Jordany Vieira, Juliana F. R. dos Santos, Karin S. F. Fornazier, Larissa Santos, Linfeng Xiao, Luciano Barosi, Marcelo V. dos Santos, Mathieu Remazeilles, Michael W. Peel, Pablo Motta, Rafael M. Ribeiro, Ricardo G. Landim, Richard Battye, Sambit Roychowdhury, Sonia Anton, Thyrso Villela, Tianyue Chen, Vincenzo Liccardo, Xue Zhang, Yin-Zhe Ma, Yongkai Zhu, Yu Sang, Zhenghao Zhu, Zhongli Zhang","submitted_at":"2021-07-04T14:06:48Z","abstract_excerpt":"Observations of the redshifted 21-cm line of neutral hydrogen (HI) are a new and powerful window of observation that offers us the possibility to map the spatial distribution of cosmic HI and learn about cosmology. BINGO (Baryon Acoustic Oscillations [BAO] from Integrated Neutral Gas Observations) is a new unique radio telescope designed to be one of the first to probe BAO at radio frequencies. BINGO has two science goals: cosmology and astrophysics. Cosmology is the main science goal and the driver for BINGO's design and strategy. The key of BINGO is to detect the low redshift BAO to put stro"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2107.01633","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/2107.01633/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":"2026-07-05T04:45:46Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"d00m3z07PlKdjGnUzUt6zBnce8Fyh1CNXV3+WV8phUG4OVdl+AoAnN2ox8ZoWSf1CIcHDtld5SRdGiH6EUhDBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-07T11:34:02.306882Z"},"content_sha256":"ee7faee34b370cf6e2d64a7a6638080475ed585270c472dd5e11402b80a1a7c3","schema_version":"1.0","event_id":"sha256:ee7faee34b370cf6e2d64a7a6638080475ed585270c472dd5e11402b80a1a7c3"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/O532XGKHAFKRWNBOQ6ARKDNIJJ/bundle.json","state_url":"https://pith.science/pith/O532XGKHAFKRWNBOQ6ARKDNIJJ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/O532XGKHAFKRWNBOQ6ARKDNIJJ/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":"2026-07-07T11:34:02Z","links":{"resolver":"https://pith.science/pith/O532XGKHAFKRWNBOQ6ARKDNIJJ","bundle":"https://pith.science/pith/O532XGKHAFKRWNBOQ6ARKDNIJJ/bundle.json","state":"https://pith.science/pith/O532XGKHAFKRWNBOQ6ARKDNIJJ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/O532XGKHAFKRWNBOQ6ARKDNIJJ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2021:O532XGKHAFKRWNBOQ6ARKDNIJJ","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":"bfd3e928c07aff5c753ae4d984251adbcdd94e10d5da202044664ad3a6be3849","cross_cats_sorted":["astro-ph.HE","astro-ph.IM"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.CO","submitted_at":"2021-07-04T14:06:48Z","title_canon_sha256":"6a508f46334143109d4cb754fe0ec6f09cb4f57c7861260354db6bb67217ebad"},"schema_version":"1.0","source":{"id":"2107.01633","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2107.01633","created_at":"2026-07-05T04:45:46Z"},{"alias_kind":"arxiv_version","alias_value":"2107.01633v2","created_at":"2026-07-05T04:45:46Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2107.01633","created_at":"2026-07-05T04:45:46Z"},{"alias_kind":"pith_short_12","alias_value":"O532XGKHAFKR","created_at":"2026-07-05T04:45:46Z"},{"alias_kind":"pith_short_16","alias_value":"O532XGKHAFKRWNBO","created_at":"2026-07-05T04:45:46Z"},{"alias_kind":"pith_short_8","alias_value":"O532XGKH","created_at":"2026-07-05T04:45:46Z"}],"graph_snapshots":[{"event_id":"sha256:ee7faee34b370cf6e2d64a7a6638080475ed585270c472dd5e11402b80a1a7c3","target":"graph","created_at":"2026-07-05T04:45:46Z","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/2107.01633/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Observations of the redshifted 21-cm line of neutral hydrogen (HI) are a new and powerful window of observation that offers us the possibility to map the spatial distribution of cosmic HI and learn about cosmology. BINGO (Baryon Acoustic Oscillations [BAO] from Integrated Neutral Gas Observations) is a new unique radio telescope designed to be one of the first to probe BAO at radio frequencies. BINGO has two science goals: cosmology and astrophysics. Cosmology is the main science goal and the driver for BINGO's design and strategy. The key of BINGO is to detect the low redshift BAO to put stro","authors_text":"Alessandro Marins, Amilcar R. Queiroz, Andre A. Costa, Bin Wang, Bruno Maffei, Camila P. Novaes, Carlos A. Wuensche, Carlos H. N. Otobone, Chenxi Shan, Clive Dickinson, Eduardo J. de Mericia, Elcio Abdalla, Elisa G. M. Ferreira, Filipe B.Abdalla, Francisco A. Brito, Frederico Vieira, Gustavo B. Silva, Haiguang Xu, Ian Browne, Jacques Delabrouille, Jiajun Zhang, Joao R. L. Santos, Jordany Vieira, Juliana F. R. dos Santos, Karin S. F. Fornazier, Larissa Santos, Linfeng Xiao, Luciano Barosi, Marcelo V. dos Santos, Mathieu Remazeilles, Michael W. Peel, Pablo Motta, Rafael M. Ribeiro, Ricardo G. Landim, Richard Battye, Sambit Roychowdhury, Sonia Anton, Thyrso Villela, Tianyue Chen, Vincenzo Liccardo, Xue Zhang, Yin-Zhe Ma, Yongkai Zhu, Yu Sang, Zhenghao Zhu, Zhongli Zhang","cross_cats":["astro-ph.HE","astro-ph.IM"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.CO","submitted_at":"2021-07-04T14:06:48Z","title":"The BINGO Project I: Baryon Acoustic Oscillations from Integrated Neutral Gas Observations"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2107.01633","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:cf0229c429e413e52571bab4bdb6f2893e9c4ef37cf7f763d4dc6f39912acd80","target":"record","created_at":"2026-07-05T04:45:46Z","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":"bfd3e928c07aff5c753ae4d984251adbcdd94e10d5da202044664ad3a6be3849","cross_cats_sorted":["astro-ph.HE","astro-ph.IM"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.CO","submitted_at":"2021-07-04T14:06:48Z","title_canon_sha256":"6a508f46334143109d4cb754fe0ec6f09cb4f57c7861260354db6bb67217ebad"},"schema_version":"1.0","source":{"id":"2107.01633","kind":"arxiv","version":2}},"canonical_sha256":"7777ab994701551b342e8781150da84a44bf77fa990195bd211d473fd499c14d","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"7777ab994701551b342e8781150da84a44bf77fa990195bd211d473fd499c14d","first_computed_at":"2026-07-05T04:45:46.388143Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T04:45:46.388143Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"UmVV6JbuD+v+sQ/8v0kMOr/nA6OlCm674p2mno7Ko4bliO17/4st/uwaUihGorK+jRHwOm/ehI0OI8odvJKcBQ==","signature_status":"signed_v1","signed_at":"2026-07-05T04:45:46.388776Z","signed_message":"canonical_sha256_bytes"},"source_id":"2107.01633","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:cf0229c429e413e52571bab4bdb6f2893e9c4ef37cf7f763d4dc6f39912acd80","sha256:ee7faee34b370cf6e2d64a7a6638080475ed585270c472dd5e11402b80a1a7c3"],"state_sha256":"42de7ac17d59fd11ef50ddcab4a84b8ec93689f8552bc7c3b611a94013a9c566"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"5ZJk+j7qTpWrs/rV1GM4B7jTt2LynIfjrsO7BcbsvcB0gQoV8WTC64XmMsy2TUvSw5AN3MIj+O9uxvNVAYUSBQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-07T11:34:02.309180Z","bundle_sha256":"836301019e5f4dfea420483d32023b9eb5da75947da2c6c7ff187569eee780cc"}}