{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:EAZSDKGGFCNU26T5JBZ4PDKGDC","short_pith_number":"pith:EAZSDKGG","canonical_record":{"source":{"id":"1909.05898","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2019-09-12T18:34:03Z","cross_cats_sorted":["astro-ph.CO"],"title_canon_sha256":"ba2e331712717ef5ff5a8631f244bcd8887009371d93132e2d7a5e39d837f141","abstract_canon_sha256":"fae50a16a238c4ae61dfdddf7686703f76b96e4f212ef5ed2dde3d05f09bd94a"},"schema_version":"1.0"},"canonical_sha256":"203321a8c6289b4d7a7d4873c78d461895d05be04226bf136d6db05456d39e67","source":{"kind":"arxiv","id":"1909.05898","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1909.05898","created_at":"2026-07-05T00:04:30Z"},{"alias_kind":"arxiv_version","alias_value":"1909.05898v1","created_at":"2026-07-05T00:04:30Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1909.05898","created_at":"2026-07-05T00:04:30Z"},{"alias_kind":"pith_short_12","alias_value":"EAZSDKGGFCNU","created_at":"2026-07-05T00:04:30Z"},{"alias_kind":"pith_short_16","alias_value":"EAZSDKGGFCNU26T5","created_at":"2026-07-05T00:04:30Z"},{"alias_kind":"pith_short_8","alias_value":"EAZSDKGG","created_at":"2026-07-05T00:04:30Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:EAZSDKGGFCNU26T5JBZ4PDKGDC","target":"record","payload":{"canonical_record":{"source":{"id":"1909.05898","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2019-09-12T18:34:03Z","cross_cats_sorted":["astro-ph.CO"],"title_canon_sha256":"ba2e331712717ef5ff5a8631f244bcd8887009371d93132e2d7a5e39d837f141","abstract_canon_sha256":"fae50a16a238c4ae61dfdddf7686703f76b96e4f212ef5ed2dde3d05f09bd94a"},"schema_version":"1.0"},"canonical_sha256":"203321a8c6289b4d7a7d4873c78d461895d05be04226bf136d6db05456d39e67","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T00:04:30.664200Z","signature_b64":"d1CofK7C/EV+WZLJhyZntLk18aGQZPTqbJ24aD43gUA/h9BuIzFcog4y1PCRunfuGstMyB1OMph+1bCk0VtqBg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"203321a8c6289b4d7a7d4873c78d461895d05be04226bf136d6db05456d39e67","last_reissued_at":"2026-07-05T00:04:30.663702Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T00:04:30.663702Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1909.05898","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":"2026-07-05T00:04:30Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"7MQVbxsIHBNLJ1998LTGcu0iO/lebCnehRcQhmWOZ07tmPOqIdIzoFgLIqJiMLx8OMVAKwpNmXfeD3Bn9pBcCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-17T17:30:50.097895Z"},"content_sha256":"63beeab8a2bf00cec67a4c62f199008293b5ad74e88b9b53a7669123a80875ce","schema_version":"1.0","event_id":"sha256:63beeab8a2bf00cec67a4c62f199008293b5ad74e88b9b53a7669123a80875ce"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:EAZSDKGGFCNU26T5JBZ4PDKGDC","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The CFHT Large Area U-band Deep Survey (CLAUDS)","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.CO"],"primary_cat":"astro-ph.GA","authors_text":"Anneya Golob, Atsushi J. Nishizawa, Bau-ching Hsieh, Cheng Li, Chengze Liu, Chris J. Willott, Guillaume Desprez, Howard K.C. Yee, Ikuru Iwata, James E. Gunn, Jean Coupon, Jiasheng Huang, John Silverman, Kazuhiro Shimasaku, Kevin Bundy, Laurence Tresse, Lingjian Chen, Marcin Sawicki, Masami Ouchi, Masayuki Tanaka, Michael A. Strauss, Michael Balogh, Nathalie Thibert, Olivier Ilbert, Olivier LeFevre, Satoshi Miyazaki, Scott Chapman, Sebastien Foucaud, Stephane Arnouts, Stephen Gwyn, Sylvain de la Torre, Thibaud Moutard, Tohru Nagao, Toru Yamada, Wei-hao Wang, Xiaohu Yang, Yipeng Jing, Yoshiaki Ono, Yuichi Harikane, Yuichi Matsuda","submitted_at":"2019-09-12T18:34:03Z","abstract_excerpt":"The CFHT Large Area U-band Deep Survey (CLAUDS) uses data taken with the MegaCam mosaic imager on CFHT to produce images of 18.60 deg2 with median seeing of FWHM=0.92 arcsec and to a median depth of U = 27.1 AB (5 sigma in 2 arcsec apertures), with selected areas that total 1.36 deg2 reaching a median depth of U=27.7 AB. These are the deepest U-band images assembled to date over this large an area. These data are located in four fields also imaged to comparably faint levels in grizy and several narrowband filters as part of the Hyper Suprime-Cam (HSC) Subaru Strategic Program (HSC-SSP). These "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1909.05898","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/1909.05898/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":"2026-07-05T00:04:30Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"JfixryqNqbUFnAp4ULOzkdrbdWNfDKIzxBphD7+3e2DbinABaWgGkf4HfQRbkUPU1eSBroZxTl1X7rju8htNBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-17T17:30:50.098268Z"},"content_sha256":"4809da7d43514b00469defd4c47de0deee164465e7db321f80ac97cf9f23e8d5","schema_version":"1.0","event_id":"sha256:4809da7d43514b00469defd4c47de0deee164465e7db321f80ac97cf9f23e8d5"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/EAZSDKGGFCNU26T5JBZ4PDKGDC/bundle.json","state_url":"https://pith.science/pith/EAZSDKGGFCNU26T5JBZ4PDKGDC/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/EAZSDKGGFCNU26T5JBZ4PDKGDC/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":"2026-07-17T17:30:50Z","links":{"resolver":"https://pith.science/pith/EAZSDKGGFCNU26T5JBZ4PDKGDC","bundle":"https://pith.science/pith/EAZSDKGGFCNU26T5JBZ4PDKGDC/bundle.json","state":"https://pith.science/pith/EAZSDKGGFCNU26T5JBZ4PDKGDC/state.json","well_known_bundle":"https://pith.science/.well-known/pith/EAZSDKGGFCNU26T5JBZ4PDKGDC/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:EAZSDKGGFCNU26T5JBZ4PDKGDC","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":"fae50a16a238c4ae61dfdddf7686703f76b96e4f212ef5ed2dde3d05f09bd94a","cross_cats_sorted":["astro-ph.CO"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2019-09-12T18:34:03Z","title_canon_sha256":"ba2e331712717ef5ff5a8631f244bcd8887009371d93132e2d7a5e39d837f141"},"schema_version":"1.0","source":{"id":"1909.05898","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1909.05898","created_at":"2026-07-05T00:04:30Z"},{"alias_kind":"arxiv_version","alias_value":"1909.05898v1","created_at":"2026-07-05T00:04:30Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1909.05898","created_at":"2026-07-05T00:04:30Z"},{"alias_kind":"pith_short_12","alias_value":"EAZSDKGGFCNU","created_at":"2026-07-05T00:04:30Z"},{"alias_kind":"pith_short_16","alias_value":"EAZSDKGGFCNU26T5","created_at":"2026-07-05T00:04:30Z"},{"alias_kind":"pith_short_8","alias_value":"EAZSDKGG","created_at":"2026-07-05T00:04:30Z"}],"graph_snapshots":[{"event_id":"sha256:4809da7d43514b00469defd4c47de0deee164465e7db321f80ac97cf9f23e8d5","target":"graph","created_at":"2026-07-05T00:04:30Z","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/1909.05898/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The CFHT Large Area U-band Deep Survey (CLAUDS) uses data taken with the MegaCam mosaic imager on CFHT to produce images of 18.60 deg2 with median seeing of FWHM=0.92 arcsec and to a median depth of U = 27.1 AB (5 sigma in 2 arcsec apertures), with selected areas that total 1.36 deg2 reaching a median depth of U=27.7 AB. These are the deepest U-band images assembled to date over this large an area. These data are located in four fields also imaged to comparably faint levels in grizy and several narrowband filters as part of the Hyper Suprime-Cam (HSC) Subaru Strategic Program (HSC-SSP). These ","authors_text":"Anneya Golob, Atsushi J. Nishizawa, Bau-ching Hsieh, Cheng Li, Chengze Liu, Chris J. Willott, Guillaume Desprez, Howard K.C. Yee, Ikuru Iwata, James E. Gunn, Jean Coupon, Jiasheng Huang, John Silverman, Kazuhiro Shimasaku, Kevin Bundy, Laurence Tresse, Lingjian Chen, Marcin Sawicki, Masami Ouchi, Masayuki Tanaka, Michael A. Strauss, Michael Balogh, Nathalie Thibert, Olivier Ilbert, Olivier LeFevre, Satoshi Miyazaki, Scott Chapman, Sebastien Foucaud, Stephane Arnouts, Stephen Gwyn, Sylvain de la Torre, Thibaud Moutard, Tohru Nagao, Toru Yamada, Wei-hao Wang, Xiaohu Yang, Yipeng Jing, Yoshiaki Ono, Yuichi Harikane, Yuichi Matsuda","cross_cats":["astro-ph.CO"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2019-09-12T18:34:03Z","title":"The CFHT Large Area U-band Deep Survey (CLAUDS)"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1909.05898","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":"sha256:63beeab8a2bf00cec67a4c62f199008293b5ad74e88b9b53a7669123a80875ce","target":"record","created_at":"2026-07-05T00:04:30Z","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":"fae50a16a238c4ae61dfdddf7686703f76b96e4f212ef5ed2dde3d05f09bd94a","cross_cats_sorted":["astro-ph.CO"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2019-09-12T18:34:03Z","title_canon_sha256":"ba2e331712717ef5ff5a8631f244bcd8887009371d93132e2d7a5e39d837f141"},"schema_version":"1.0","source":{"id":"1909.05898","kind":"arxiv","version":1}},"canonical_sha256":"203321a8c6289b4d7a7d4873c78d461895d05be04226bf136d6db05456d39e67","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"203321a8c6289b4d7a7d4873c78d461895d05be04226bf136d6db05456d39e67","first_computed_at":"2026-07-05T00:04:30.663702Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T00:04:30.663702Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"d1CofK7C/EV+WZLJhyZntLk18aGQZPTqbJ24aD43gUA/h9BuIzFcog4y1PCRunfuGstMyB1OMph+1bCk0VtqBg==","signature_status":"signed_v1","signed_at":"2026-07-05T00:04:30.664200Z","signed_message":"canonical_sha256_bytes"},"source_id":"1909.05898","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:63beeab8a2bf00cec67a4c62f199008293b5ad74e88b9b53a7669123a80875ce","sha256:4809da7d43514b00469defd4c47de0deee164465e7db321f80ac97cf9f23e8d5"],"state_sha256":"0fa0e3a181039cf40c46393fdc45c809713d629f84b245f1c45453e9f075c7cc"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"quJ8rBwr+S/XwJ3WCV3tYEoQInl3YfKSUt7UKh/Ezecyy7dMZap8DMzTYNqX4rX29YwMoFbzlAL7vQ5zeXYVDg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-17T17:30:50.100390Z","bundle_sha256":"fdcbfab4ed08e3f0476544ed03fcaaccc48ff6301225b6226310d01febb1bbe4"}}