{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:F2HLVCPRVZEOJ67PHUGS3HLUYL","short_pith_number":"pith:F2HLVCPR","canonical_record":{"source":{"id":"1804.00827","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2018-04-03T05:05:31Z","cross_cats_sorted":[],"title_canon_sha256":"2188f94251d363d908c24d22196b4c6e8775373d7ccdeef12035f585b2716ec7","abstract_canon_sha256":"6f8c2d41f02b88f5442e675b477203b66c6f8c35b778a981dfa02da4e6195b1b"},"schema_version":"1.0"},"canonical_sha256":"2e8eba89f1ae48e4fbef3d0d2d9d74c2d6379ebb783d73f50103194fc887ca95","source":{"kind":"arxiv","id":"1804.00827","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1804.00827","created_at":"2026-05-18T00:18:48Z"},{"alias_kind":"arxiv_version","alias_value":"1804.00827v1","created_at":"2026-05-18T00:18:48Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1804.00827","created_at":"2026-05-18T00:18:48Z"},{"alias_kind":"pith_short_12","alias_value":"F2HLVCPRVZEO","created_at":"2026-05-18T12:32:22Z"},{"alias_kind":"pith_short_16","alias_value":"F2HLVCPRVZEOJ67P","created_at":"2026-05-18T12:32:22Z"},{"alias_kind":"pith_short_8","alias_value":"F2HLVCPR","created_at":"2026-05-18T12:32:22Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:F2HLVCPRVZEOJ67PHUGS3HLUYL","target":"record","payload":{"canonical_record":{"source":{"id":"1804.00827","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2018-04-03T05:05:31Z","cross_cats_sorted":[],"title_canon_sha256":"2188f94251d363d908c24d22196b4c6e8775373d7ccdeef12035f585b2716ec7","abstract_canon_sha256":"6f8c2d41f02b88f5442e675b477203b66c6f8c35b778a981dfa02da4e6195b1b"},"schema_version":"1.0"},"canonical_sha256":"2e8eba89f1ae48e4fbef3d0d2d9d74c2d6379ebb783d73f50103194fc887ca95","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:18:48.684132Z","signature_b64":"beMZQWeh+MSKVAd7x+AjGddKWM9ypyV8GiButscfLVjVtSbtweVaYsBPGkgzNz/blBhIoWmRkvx5xPKFxtUSDQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"2e8eba89f1ae48e4fbef3d0d2d9d74c2d6379ebb783d73f50103194fc887ca95","last_reissued_at":"2026-05-18T00:18:48.683573Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:18:48.683573Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1804.00827","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":"2026-05-18T00:18:48Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"/auYAOJKJrzakphwjsX97xcYwY69QwydCX3o//0FxDcwcGfmU/1gglC6n9sig0bK39kuERZJyacooVHQ/xEOAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T20:49:21.358210Z"},"content_sha256":"41be161ca2c15ae4cd0895b83c9d315baf458a2dd969e9afc1134262599bdba6","schema_version":"1.0","event_id":"sha256:41be161ca2c15ae4cd0895b83c9d315baf458a2dd969e9afc1134262599bdba6"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:F2HLVCPRVZEOJ67PHUGS3HLUYL","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Modeling of proton-induced radioactivation background in hard X-ray telescopes: Geant4-based simulation and its demonstration by Hitomi's measurement in a low Earth orbit","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.IM","authors_text":"Andreas Zoglauer, Daniel Maier, Dennis H. Wright, Francois Lebrun, Goro Sato, Greg Madejski, Hideki Uchiyama, Hiroaki Murakami, Hirofumi Noda, Hirokazu Odaka, Hiromitsu Takahashi, Hiroyasu Tajima, Junichiro Katsuta, Jun Kataoka, Katsuhiro Hayashi, Katsuma Miyake, Kazuhiro Nakazawa, Kazuo Makishima, Kazutaka Yamaoka, Kouichi Hagino, Kunishiro Mori, Madoka Kawaharada, Makoto Asai, Masanobu Ozaki, Masanori Ohno, Masayuki Ohta, Motohide Kokubun, Olivier Limousin, Philippe Laurent, Rie Sato, Shin'ichiro Takeda, Shin Watanabe, Shinya Saito, Shogo B. Kobayashi, Tadayuki Takahashi, Takaaki Tanaka, Takayuki Yuasa, Takeshi Nakamori, Taketo Mimura, Tamotsu Sato, Tatsumi Koi, Teruaki Enoto, Tetsuya Yasuda, Toshio Nakano, Tsunefumi Mizuno, Yasunobu Uchiyama, Yasushi Fukazawa, Yasuyuki Tanaka, Yoichi Yatsu, Yukikatsu Terada","submitted_at":"2018-04-03T05:05:31Z","abstract_excerpt":"Hard X-ray astronomical observatories in orbit suffer from a significant amount of background due to radioactivation induced by cosmic-ray protons and/or geomagnetically trapped protons. Within the framework of a full Monte Carlo simulation, we present modeling of in-orbit instrumental background dominated by radioactivation. To reduce the computation time required by straightforward simulations of delayed emissions from activated isotopes, we insert a semi-analytical calculation that converts production probabilities of radioactive isotopes by interaction of the primary protons into decay rat"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1804.00827","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":""},"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":"2026-05-18T00:18:48Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"oGuKRFijMbeUXeN9KqorkNV/Xa+wnh1s4PdYMZV7xHkM8uWaIqdtHYFlP1jQz3gC/1BMd4mJF7Y8X4943L4YAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T20:49:21.358725Z"},"content_sha256":"37ed292c6249b9e6ac029c290ca0e7ee7c5d99eaf0ab41e1ac638bc4ac4e5748","schema_version":"1.0","event_id":"sha256:37ed292c6249b9e6ac029c290ca0e7ee7c5d99eaf0ab41e1ac638bc4ac4e5748"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/F2HLVCPRVZEOJ67PHUGS3HLUYL/bundle.json","state_url":"https://pith.science/pith/F2HLVCPRVZEOJ67PHUGS3HLUYL/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/F2HLVCPRVZEOJ67PHUGS3HLUYL/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":"2026-06-02T20:49:21Z","links":{"resolver":"https://pith.science/pith/F2HLVCPRVZEOJ67PHUGS3HLUYL","bundle":"https://pith.science/pith/F2HLVCPRVZEOJ67PHUGS3HLUYL/bundle.json","state":"https://pith.science/pith/F2HLVCPRVZEOJ67PHUGS3HLUYL/state.json","well_known_bundle":"https://pith.science/.well-known/pith/F2HLVCPRVZEOJ67PHUGS3HLUYL/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:F2HLVCPRVZEOJ67PHUGS3HLUYL","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":"6f8c2d41f02b88f5442e675b477203b66c6f8c35b778a981dfa02da4e6195b1b","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2018-04-03T05:05:31Z","title_canon_sha256":"2188f94251d363d908c24d22196b4c6e8775373d7ccdeef12035f585b2716ec7"},"schema_version":"1.0","source":{"id":"1804.00827","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1804.00827","created_at":"2026-05-18T00:18:48Z"},{"alias_kind":"arxiv_version","alias_value":"1804.00827v1","created_at":"2026-05-18T00:18:48Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1804.00827","created_at":"2026-05-18T00:18:48Z"},{"alias_kind":"pith_short_12","alias_value":"F2HLVCPRVZEO","created_at":"2026-05-18T12:32:22Z"},{"alias_kind":"pith_short_16","alias_value":"F2HLVCPRVZEOJ67P","created_at":"2026-05-18T12:32:22Z"},{"alias_kind":"pith_short_8","alias_value":"F2HLVCPR","created_at":"2026-05-18T12:32:22Z"}],"graph_snapshots":[{"event_id":"sha256:37ed292c6249b9e6ac029c290ca0e7ee7c5d99eaf0ab41e1ac638bc4ac4e5748","target":"graph","created_at":"2026-05-18T00:18:48Z","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"},"paper":{"abstract_excerpt":"Hard X-ray astronomical observatories in orbit suffer from a significant amount of background due to radioactivation induced by cosmic-ray protons and/or geomagnetically trapped protons. Within the framework of a full Monte Carlo simulation, we present modeling of in-orbit instrumental background dominated by radioactivation. To reduce the computation time required by straightforward simulations of delayed emissions from activated isotopes, we insert a semi-analytical calculation that converts production probabilities of radioactive isotopes by interaction of the primary protons into decay rat","authors_text":"Andreas Zoglauer, Daniel Maier, Dennis H. Wright, Francois Lebrun, Goro Sato, Greg Madejski, Hideki Uchiyama, Hiroaki Murakami, Hirofumi Noda, Hirokazu Odaka, Hiromitsu Takahashi, Hiroyasu Tajima, Junichiro Katsuta, Jun Kataoka, Katsuhiro Hayashi, Katsuma Miyake, Kazuhiro Nakazawa, Kazuo Makishima, Kazutaka Yamaoka, Kouichi Hagino, Kunishiro Mori, Madoka Kawaharada, Makoto Asai, Masanobu Ozaki, Masanori Ohno, Masayuki Ohta, Motohide Kokubun, Olivier Limousin, Philippe Laurent, Rie Sato, Shin'ichiro Takeda, Shin Watanabe, Shinya Saito, Shogo B. Kobayashi, Tadayuki Takahashi, Takaaki Tanaka, Takayuki Yuasa, Takeshi Nakamori, Taketo Mimura, Tamotsu Sato, Tatsumi Koi, Teruaki Enoto, Tetsuya Yasuda, Toshio Nakano, Tsunefumi Mizuno, Yasunobu Uchiyama, Yasushi Fukazawa, Yasuyuki Tanaka, Yoichi Yatsu, Yukikatsu Terada","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2018-04-03T05:05:31Z","title":"Modeling of proton-induced radioactivation background in hard X-ray telescopes: Geant4-based simulation and its demonstration by Hitomi's measurement in a low Earth orbit"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1804.00827","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":"sha256:41be161ca2c15ae4cd0895b83c9d315baf458a2dd969e9afc1134262599bdba6","target":"record","created_at":"2026-05-18T00:18:48Z","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":"6f8c2d41f02b88f5442e675b477203b66c6f8c35b778a981dfa02da4e6195b1b","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2018-04-03T05:05:31Z","title_canon_sha256":"2188f94251d363d908c24d22196b4c6e8775373d7ccdeef12035f585b2716ec7"},"schema_version":"1.0","source":{"id":"1804.00827","kind":"arxiv","version":1}},"canonical_sha256":"2e8eba89f1ae48e4fbef3d0d2d9d74c2d6379ebb783d73f50103194fc887ca95","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"2e8eba89f1ae48e4fbef3d0d2d9d74c2d6379ebb783d73f50103194fc887ca95","first_computed_at":"2026-05-18T00:18:48.683573Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:18:48.683573Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"beMZQWeh+MSKVAd7x+AjGddKWM9ypyV8GiButscfLVjVtSbtweVaYsBPGkgzNz/blBhIoWmRkvx5xPKFxtUSDQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:18:48.684132Z","signed_message":"canonical_sha256_bytes"},"source_id":"1804.00827","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:41be161ca2c15ae4cd0895b83c9d315baf458a2dd969e9afc1134262599bdba6","sha256:37ed292c6249b9e6ac029c290ca0e7ee7c5d99eaf0ab41e1ac638bc4ac4e5748"],"state_sha256":"c23cc490f068c26ad9819c1874b811ebe810f26bf34ef7ee217ae046e07bf1b5"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"FfKu3O3mK5e9e06pLs2bGMPTdPKqVpvRLPfJXmWL0jseuPJ8TxvqqDDifnNCOSeyJiRIU2RUdyZYV9eAPsQ2AA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-02T20:49:21.360761Z","bundle_sha256":"927f7242517125c02674b219c0ad649fac4bd8093aeb6e1c65d1926104ea8b5e"}}