{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2022:H3EVU5U657CVGQQQW3KTJ7IWD4","short_pith_number":"pith:H3EVU5U6","canonical_record":{"source":{"id":"2212.12862","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"astro-ph.IM","submitted_at":"2022-12-25T05:55:17Z","cross_cats_sorted":[],"title_canon_sha256":"e20d16341ba44d75f9aaf1006ae88438a336afd8aedce9992758625f014b1c8d","abstract_canon_sha256":"b38eb777a9dadf59a4313214bfea0cc1bee56aa9424751f488a9f5655204efab"},"schema_version":"1.0"},"canonical_sha256":"3ec95a769eefc5534210b6d534fd161f3bdb5c6ab0987ae6002f98c852839bca","source":{"kind":"arxiv","id":"2212.12862","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2212.12862","created_at":"2026-07-05T06:02:48Z"},{"alias_kind":"arxiv_version","alias_value":"2212.12862v1","created_at":"2026-07-05T06:02:48Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2212.12862","created_at":"2026-07-05T06:02:48Z"},{"alias_kind":"pith_short_12","alias_value":"H3EVU5U657CV","created_at":"2026-07-05T06:02:48Z"},{"alias_kind":"pith_short_16","alias_value":"H3EVU5U657CVGQQQ","created_at":"2026-07-05T06:02:48Z"},{"alias_kind":"pith_short_8","alias_value":"H3EVU5U6","created_at":"2026-07-05T06:02:48Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2022:H3EVU5U657CVGQQQW3KTJ7IWD4","target":"record","payload":{"canonical_record":{"source":{"id":"2212.12862","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"astro-ph.IM","submitted_at":"2022-12-25T05:55:17Z","cross_cats_sorted":[],"title_canon_sha256":"e20d16341ba44d75f9aaf1006ae88438a336afd8aedce9992758625f014b1c8d","abstract_canon_sha256":"b38eb777a9dadf59a4313214bfea0cc1bee56aa9424751f488a9f5655204efab"},"schema_version":"1.0"},"canonical_sha256":"3ec95a769eefc5534210b6d534fd161f3bdb5c6ab0987ae6002f98c852839bca","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T06:02:48.691024Z","signature_b64":"rw5M18DfPhiitkH481aAvLjYr+Bp6I8fuU1F2dkAA0+EAAjDZkLUnIYKfBHQ9iMIgkQBu+ZKq85kdIr3FCrzCw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"3ec95a769eefc5534210b6d534fd161f3bdb5c6ab0987ae6002f98c852839bca","last_reissued_at":"2026-07-05T06:02:48.690548Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T06:02:48.690548Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2212.12862","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":"2026-07-05T06:02:48Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"1xKcSj+8PaX6IQfAy/CJhlNDq8sWC5Y+52c5RZ10UoilXfJxzD8aeYghbGUxUf+kDTfMeMINM8lM/XX7YrwUDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-03T05:54:39.591033Z"},"content_sha256":"d3606f4683388f0c75f17277efe00cddce9203b08e5e34a3510aa6cefcb42371","schema_version":"1.0","event_id":"sha256:d3606f4683388f0c75f17277efe00cddce9203b08e5e34a3510aa6cefcb42371"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2022:H3EVU5U657CVGQQQW3KTJ7IWD4","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Thermal Control System to Easily Cool the GAPS Balloon-borne Instrument on the Ground","license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.IM","authors_text":"Akiko Kawachi, Hideyuki Fuke, Hiroyuki Ogawa, Kakeru Tokunaga, Masaru Saijo, Masayoshi Kozai, Shohei Kobayashi, Shun Okazaki, Shuto Takeuchi","submitted_at":"2022-12-25T05:55:17Z","abstract_excerpt":"This study developed a novel thermal control system to cool detectors of the General AntiParticle Spectrometer (GAPS) before its flights. GAPS is a balloon-borne cosmic-ray observation experiment. In its payload, GAPS contains over 1000 silicon detectors that must be cooled below $-40^{\\circ}\\mbox{C}$. All detectors are thermally coupled to a unique heat-pipe system (HPS) that transfers heat from the detectors to a radiator. The radiator is designed to be cooled below $-50^{\\circ}\\mbox{C}$ during the flight by exposure to space. The pre-flight state of the detectors is checked on the ground at"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2212.12862","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/2212.12862/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":"2026-07-05T06:02:48Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"QDzhcIX0HtqMKtuCqSMI78t20IW8vS22FhPTW5T6IJYtQbGYNAOw9MaNa2PqEoAYtRRT7NwvFIRk/x4tKPIFDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-03T05:54:39.591509Z"},"content_sha256":"9ac0ea724709b05c136c7753c47bfe78b5ad85d78ff3bf64d779291d39549749","schema_version":"1.0","event_id":"sha256:9ac0ea724709b05c136c7753c47bfe78b5ad85d78ff3bf64d779291d39549749"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/H3EVU5U657CVGQQQW3KTJ7IWD4/bundle.json","state_url":"https://pith.science/pith/H3EVU5U657CVGQQQW3KTJ7IWD4/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/H3EVU5U657CVGQQQW3KTJ7IWD4/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":"2026-08-03T05:54:39Z","links":{"resolver":"https://pith.science/pith/H3EVU5U657CVGQQQW3KTJ7IWD4","bundle":"https://pith.science/pith/H3EVU5U657CVGQQQW3KTJ7IWD4/bundle.json","state":"https://pith.science/pith/H3EVU5U657CVGQQQW3KTJ7IWD4/state.json","well_known_bundle":"https://pith.science/.well-known/pith/H3EVU5U657CVGQQQW3KTJ7IWD4/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2022:H3EVU5U657CVGQQQW3KTJ7IWD4","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":"b38eb777a9dadf59a4313214bfea0cc1bee56aa9424751f488a9f5655204efab","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"astro-ph.IM","submitted_at":"2022-12-25T05:55:17Z","title_canon_sha256":"e20d16341ba44d75f9aaf1006ae88438a336afd8aedce9992758625f014b1c8d"},"schema_version":"1.0","source":{"id":"2212.12862","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2212.12862","created_at":"2026-07-05T06:02:48Z"},{"alias_kind":"arxiv_version","alias_value":"2212.12862v1","created_at":"2026-07-05T06:02:48Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2212.12862","created_at":"2026-07-05T06:02:48Z"},{"alias_kind":"pith_short_12","alias_value":"H3EVU5U657CV","created_at":"2026-07-05T06:02:48Z"},{"alias_kind":"pith_short_16","alias_value":"H3EVU5U657CVGQQQ","created_at":"2026-07-05T06:02:48Z"},{"alias_kind":"pith_short_8","alias_value":"H3EVU5U6","created_at":"2026-07-05T06:02:48Z"}],"graph_snapshots":[{"event_id":"sha256:9ac0ea724709b05c136c7753c47bfe78b5ad85d78ff3bf64d779291d39549749","target":"graph","created_at":"2026-07-05T06:02:48Z","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/2212.12862/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"This study developed a novel thermal control system to cool detectors of the General AntiParticle Spectrometer (GAPS) before its flights. GAPS is a balloon-borne cosmic-ray observation experiment. In its payload, GAPS contains over 1000 silicon detectors that must be cooled below $-40^{\\circ}\\mbox{C}$. All detectors are thermally coupled to a unique heat-pipe system (HPS) that transfers heat from the detectors to a radiator. The radiator is designed to be cooled below $-50^{\\circ}\\mbox{C}$ during the flight by exposure to space. The pre-flight state of the detectors is checked on the ground at","authors_text":"Akiko Kawachi, Hideyuki Fuke, Hiroyuki Ogawa, Kakeru Tokunaga, Masaru Saijo, Masayoshi Kozai, Shohei Kobayashi, Shun Okazaki, Shuto Takeuchi","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"astro-ph.IM","submitted_at":"2022-12-25T05:55:17Z","title":"Thermal Control System to Easily Cool the GAPS Balloon-borne Instrument on the Ground"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2212.12862","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:d3606f4683388f0c75f17277efe00cddce9203b08e5e34a3510aa6cefcb42371","target":"record","created_at":"2026-07-05T06:02:48Z","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":"b38eb777a9dadf59a4313214bfea0cc1bee56aa9424751f488a9f5655204efab","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"astro-ph.IM","submitted_at":"2022-12-25T05:55:17Z","title_canon_sha256":"e20d16341ba44d75f9aaf1006ae88438a336afd8aedce9992758625f014b1c8d"},"schema_version":"1.0","source":{"id":"2212.12862","kind":"arxiv","version":1}},"canonical_sha256":"3ec95a769eefc5534210b6d534fd161f3bdb5c6ab0987ae6002f98c852839bca","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"3ec95a769eefc5534210b6d534fd161f3bdb5c6ab0987ae6002f98c852839bca","first_computed_at":"2026-07-05T06:02:48.690548Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T06:02:48.690548Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"rw5M18DfPhiitkH481aAvLjYr+Bp6I8fuU1F2dkAA0+EAAjDZkLUnIYKfBHQ9iMIgkQBu+ZKq85kdIr3FCrzCw==","signature_status":"signed_v1","signed_at":"2026-07-05T06:02:48.691024Z","signed_message":"canonical_sha256_bytes"},"source_id":"2212.12862","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:d3606f4683388f0c75f17277efe00cddce9203b08e5e34a3510aa6cefcb42371","sha256:9ac0ea724709b05c136c7753c47bfe78b5ad85d78ff3bf64d779291d39549749"],"state_sha256":"d470b2ef9c7f0ae73283ac6ffe49fb1c88dfbaf44aa246a14a143f9edfb79c5b"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"0T6CWwYPiSOVgY+r7Waz2hZcTWeGLSgWCYpyXM3XrmS+1dZeg1xbLu4/Lp5fo7bKuVm+1VsjL+JqAn9180WfDg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-03T05:54:39.594684Z","bundle_sha256":"a632feb7540bbd4e90c9c20ec508fe6e2bcb861b1b9ca3cd0963e0fb6cf5776f"}}