{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:D7K6BDB7PC3UVNCKIGQGNYEREP","short_pith_number":"pith:D7K6BDB7","canonical_record":{"source":{"id":"1803.00242","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2018-03-01T08:18:12Z","cross_cats_sorted":["astro-ph.HE"],"title_canon_sha256":"1cab958fd5c814628bb07a18c6e9b139acaf145a568c17c786b69f476653d5a0","abstract_canon_sha256":"9c122fc7b8ba7815ba1b8d7adb52408bd349071094f13983383d93bd4728efc4"},"schema_version":"1.0"},"canonical_sha256":"1fd5e08c3f78b74ab44a41a066e09123d2edfa1e583768c4eb6108c4d60b771b","source":{"kind":"arxiv","id":"1803.00242","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1803.00242","created_at":"2026-05-18T00:09:00Z"},{"alias_kind":"arxiv_version","alias_value":"1803.00242v2","created_at":"2026-05-18T00:09:00Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1803.00242","created_at":"2026-05-18T00:09:00Z"},{"alias_kind":"pith_short_12","alias_value":"D7K6BDB7PC3U","created_at":"2026-05-18T12:32:19Z"},{"alias_kind":"pith_short_16","alias_value":"D7K6BDB7PC3UVNCK","created_at":"2026-05-18T12:32:19Z"},{"alias_kind":"pith_short_8","alias_value":"D7K6BDB7","created_at":"2026-05-18T12:32:19Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:D7K6BDB7PC3UVNCKIGQGNYEREP","target":"record","payload":{"canonical_record":{"source":{"id":"1803.00242","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2018-03-01T08:18:12Z","cross_cats_sorted":["astro-ph.HE"],"title_canon_sha256":"1cab958fd5c814628bb07a18c6e9b139acaf145a568c17c786b69f476653d5a0","abstract_canon_sha256":"9c122fc7b8ba7815ba1b8d7adb52408bd349071094f13983383d93bd4728efc4"},"schema_version":"1.0"},"canonical_sha256":"1fd5e08c3f78b74ab44a41a066e09123d2edfa1e583768c4eb6108c4d60b771b","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:09:00.117889Z","signature_b64":"EI5BJRgBOc11tlVVnWVZfmLnUieu5vSn+lDKlhNBj5N7xt4lvA8Z8UzkbnwPYgRdTb4V9Jd/DRy61NnxlFfEBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"1fd5e08c3f78b74ab44a41a066e09123d2edfa1e583768c4eb6108c4d60b771b","last_reissued_at":"2026-05-18T00:09:00.117135Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:09:00.117135Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1803.00242","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":"2026-05-18T00:09:00Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Bom7Hi9TyrMoRqjrKRlrf1JsR96HzZp52qgGF9H/j+AP/JfcilOLI/ePIuNBghfDn4dEjvjOqU2TOvM0hOe1Cg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T18:35:23.842080Z"},"content_sha256":"0564ec692c87effca0475269e163680b4a6c1564f8adf6b385954f45648b46e3","schema_version":"1.0","event_id":"sha256:0564ec692c87effca0475269e163680b4a6c1564f8adf6b385954f45648b46e3"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:D7K6BDB7PC3UVNCKIGQGNYEREP","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Inorbit Performance of the Hard X-ray Telescope (HXT) on board the Hitomi (ASTRO-H) satellite","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.HE"],"primary_cat":"astro-ph.IM","authors_text":"A. Furuzawa, H. Awaki, H. Kunieda, H. Matsumoto, H. Mori, I. Mitsuishi, K. Ishibashi, K. Tamura., M. Ishida, M. Itoh, R. Iizuka, S. Sugita, S. Yamauchi, T. Hayashi, T. Miyazawa, T. Okajima, Y. Haba, Y. Maeda, Y. Tawara","submitted_at":"2018-03-01T08:18:12Z","abstract_excerpt":"Hitomi (ASTRO-H) carries two Hard X-ray Telescopes (HXTs) that can focus X-rays up to 80 keV. Combined with the Hard X-ray Imagers (HXIs) that detect the focused X-rays, imaging spectroscopy in the high-energy band from 5 keV to 80 keV is made possible. We studied characteristics of HXTs after the launch such as the encircled energy function (EEF) and the effective area using the data of a Crab observation. The half power diameters (HPDs) in the 5--80 keV band evaluated from the EEFs are 1.59 arcmin for HXT-1 and 1.65 arcmin for HXT-2. Those are consistent with the HPDs measured with ground ex"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1803.00242","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":""},"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":"2026-05-18T00:09:00Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"YAb5/lECtl/66Th7wCdReV0a/PUKlDLin94ke+U42ejIq3jq/ONVgn0DPB6vpF16rHJZbzGWrxNkcLnJ+ywLAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T18:35:23.842445Z"},"content_sha256":"142d40ab4936a9cef930339d4ff54114193f8d1d8f1ea2e3b71a6e5727c59e39","schema_version":"1.0","event_id":"sha256:142d40ab4936a9cef930339d4ff54114193f8d1d8f1ea2e3b71a6e5727c59e39"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/D7K6BDB7PC3UVNCKIGQGNYEREP/bundle.json","state_url":"https://pith.science/pith/D7K6BDB7PC3UVNCKIGQGNYEREP/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/D7K6BDB7PC3UVNCKIGQGNYEREP/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":"2026-05-28T18:35:23Z","links":{"resolver":"https://pith.science/pith/D7K6BDB7PC3UVNCKIGQGNYEREP","bundle":"https://pith.science/pith/D7K6BDB7PC3UVNCKIGQGNYEREP/bundle.json","state":"https://pith.science/pith/D7K6BDB7PC3UVNCKIGQGNYEREP/state.json","well_known_bundle":"https://pith.science/.well-known/pith/D7K6BDB7PC3UVNCKIGQGNYEREP/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:D7K6BDB7PC3UVNCKIGQGNYEREP","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":"9c122fc7b8ba7815ba1b8d7adb52408bd349071094f13983383d93bd4728efc4","cross_cats_sorted":["astro-ph.HE"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2018-03-01T08:18:12Z","title_canon_sha256":"1cab958fd5c814628bb07a18c6e9b139acaf145a568c17c786b69f476653d5a0"},"schema_version":"1.0","source":{"id":"1803.00242","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1803.00242","created_at":"2026-05-18T00:09:00Z"},{"alias_kind":"arxiv_version","alias_value":"1803.00242v2","created_at":"2026-05-18T00:09:00Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1803.00242","created_at":"2026-05-18T00:09:00Z"},{"alias_kind":"pith_short_12","alias_value":"D7K6BDB7PC3U","created_at":"2026-05-18T12:32:19Z"},{"alias_kind":"pith_short_16","alias_value":"D7K6BDB7PC3UVNCK","created_at":"2026-05-18T12:32:19Z"},{"alias_kind":"pith_short_8","alias_value":"D7K6BDB7","created_at":"2026-05-18T12:32:19Z"}],"graph_snapshots":[{"event_id":"sha256:142d40ab4936a9cef930339d4ff54114193f8d1d8f1ea2e3b71a6e5727c59e39","target":"graph","created_at":"2026-05-18T00:09:00Z","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":"Hitomi (ASTRO-H) carries two Hard X-ray Telescopes (HXTs) that can focus X-rays up to 80 keV. Combined with the Hard X-ray Imagers (HXIs) that detect the focused X-rays, imaging spectroscopy in the high-energy band from 5 keV to 80 keV is made possible. We studied characteristics of HXTs after the launch such as the encircled energy function (EEF) and the effective area using the data of a Crab observation. The half power diameters (HPDs) in the 5--80 keV band evaluated from the EEFs are 1.59 arcmin for HXT-1 and 1.65 arcmin for HXT-2. Those are consistent with the HPDs measured with ground ex","authors_text":"A. Furuzawa, H. Awaki, H. Kunieda, H. Matsumoto, H. Mori, I. Mitsuishi, K. Ishibashi, K. Tamura., M. Ishida, M. Itoh, R. Iizuka, S. Sugita, S. Yamauchi, T. Hayashi, T. Miyazawa, T. Okajima, Y. Haba, Y. Maeda, Y. Tawara","cross_cats":["astro-ph.HE"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2018-03-01T08:18:12Z","title":"Inorbit Performance of the Hard X-ray Telescope (HXT) on board the Hitomi (ASTRO-H) satellite"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1803.00242","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":"sha256:0564ec692c87effca0475269e163680b4a6c1564f8adf6b385954f45648b46e3","target":"record","created_at":"2026-05-18T00:09:00Z","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":"9c122fc7b8ba7815ba1b8d7adb52408bd349071094f13983383d93bd4728efc4","cross_cats_sorted":["astro-ph.HE"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2018-03-01T08:18:12Z","title_canon_sha256":"1cab958fd5c814628bb07a18c6e9b139acaf145a568c17c786b69f476653d5a0"},"schema_version":"1.0","source":{"id":"1803.00242","kind":"arxiv","version":2}},"canonical_sha256":"1fd5e08c3f78b74ab44a41a066e09123d2edfa1e583768c4eb6108c4d60b771b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"1fd5e08c3f78b74ab44a41a066e09123d2edfa1e583768c4eb6108c4d60b771b","first_computed_at":"2026-05-18T00:09:00.117135Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:09:00.117135Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"EI5BJRgBOc11tlVVnWVZfmLnUieu5vSn+lDKlhNBj5N7xt4lvA8Z8UzkbnwPYgRdTb4V9Jd/DRy61NnxlFfEBQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:09:00.117889Z","signed_message":"canonical_sha256_bytes"},"source_id":"1803.00242","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:0564ec692c87effca0475269e163680b4a6c1564f8adf6b385954f45648b46e3","sha256:142d40ab4936a9cef930339d4ff54114193f8d1d8f1ea2e3b71a6e5727c59e39"],"state_sha256":"d015ef930c2575c3ba9d09d02e0b901d5d68db0648570f63ee09702eeed351e6"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"zZuSkEAj7kdcMq8stXsLT7MMcMdsI9xW9KtEv4lQWJ0sQmrVDrRgNYwYQ6iZR9tcge3tCEJ9PxDS3KwmyE7ZDw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-28T18:35:23.844591Z","bundle_sha256":"af02ea5a6c4e18b0f6080dba3f2d5a49077a872e1f32b4b1096fcad9fdfc8200"}}