{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2023:FSW5M2R4BRU5HF32IIWA6XSPLW","short_pith_number":"pith:FSW5M2R4","canonical_record":{"source":{"id":"2308.05302","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.ins-det","submitted_at":"2023-08-10T02:45:39Z","cross_cats_sorted":[],"title_canon_sha256":"0319fa8e8e89181d44639789bc17426285d69676186274027c4019491eca1049","abstract_canon_sha256":"15d8ee1c0ad3d064425a3909eb8ad218f82798030dd6e10d6c3fa9e3c50cfd91"},"schema_version":"1.0"},"canonical_sha256":"2cadd66a3c0c69d3977a422c0f5e4f5db095b61e26eb54cf5d4529cf8425ea24","source":{"kind":"arxiv","id":"2308.05302","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2308.05302","created_at":"2026-07-05T07:19:47Z"},{"alias_kind":"arxiv_version","alias_value":"2308.05302v2","created_at":"2026-07-05T07:19:47Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2308.05302","created_at":"2026-07-05T07:19:47Z"},{"alias_kind":"pith_short_12","alias_value":"FSW5M2R4BRU5","created_at":"2026-07-05T07:19:47Z"},{"alias_kind":"pith_short_16","alias_value":"FSW5M2R4BRU5HF32","created_at":"2026-07-05T07:19:47Z"},{"alias_kind":"pith_short_8","alias_value":"FSW5M2R4","created_at":"2026-07-05T07:19:47Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2023:FSW5M2R4BRU5HF32IIWA6XSPLW","target":"record","payload":{"canonical_record":{"source":{"id":"2308.05302","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.ins-det","submitted_at":"2023-08-10T02:45:39Z","cross_cats_sorted":[],"title_canon_sha256":"0319fa8e8e89181d44639789bc17426285d69676186274027c4019491eca1049","abstract_canon_sha256":"15d8ee1c0ad3d064425a3909eb8ad218f82798030dd6e10d6c3fa9e3c50cfd91"},"schema_version":"1.0"},"canonical_sha256":"2cadd66a3c0c69d3977a422c0f5e4f5db095b61e26eb54cf5d4529cf8425ea24","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T07:19:47.987658Z","signature_b64":"dSurfkHLO1M3Dxc1Rgyip9HW9tTw5YeGR2KHQnF/Iiv4m+Aqhw6bJrDvInftNCn7mC2CiBdSjweSYhx29or/DQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"2cadd66a3c0c69d3977a422c0f5e4f5db095b61e26eb54cf5d4529cf8425ea24","last_reissued_at":"2026-07-05T07:19:47.987149Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T07:19:47.987149Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2308.05302","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":"2026-07-05T07:19:47Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"L6/j6TvqIUUSXZ+X8Tr6YOeio06PIKeWHcxpQxepKP32pQTlTD3mab2+CH34f9iV+sbBNBO2YhW6a1lmFpTpBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-06T12:22:33.877691Z"},"content_sha256":"79abc291160b72572a2c15a356c691ff8d77d8958aa470798e303ca3280f8314","schema_version":"1.0","event_id":"sha256:79abc291160b72572a2c15a356c691ff8d77d8958aa470798e303ca3280f8314"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2023:FSW5M2R4BRU5HF32IIWA6XSPLW","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Development of a low-background HPGe detector at Kamioka Observatory","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"physics.ins-det","authors_text":"A. A. Suzuki, A. Minamino, H. Ikeda, H. Ito, H. Sekiya, K. Hosokawa, K. Ichimura, M. Ikeda, M. Kurasawa, S. Suzuki, Y. Gando, Y. Kishimoto","submitted_at":"2023-08-10T02:45:39Z","abstract_excerpt":"A new ultra-low background high-purity germanium (HPGe) detector has been installed at the Kamioka underground experimental site. The background count rate in the energy range from 40 keV to 2700 keV is about 25% lower than that of the first HPGe detector installed in 2016, which has the same detector specification and similar shielding geometry. This paper describes the shielding configuration, including the cleaning of the material surface, the comparison of calibration data and simulation, the time variation of the background spectra, the sample measurement procedure, and some results of th"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2308.05302","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/2308.05302/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":"2026-07-05T07:19:47Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"5FlXGIQaxubXmhsUneP79ONonSr3AsVpO2rW/0bavVjSzrolr1X1pJ0HrT1cjK686ycZTPjBlJ02m+oH5kT6Dg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-06T12:22:33.878211Z"},"content_sha256":"a39b592541a33e73f580870bf022e517df3bac66856c3ae0ed9500abc43595a0","schema_version":"1.0","event_id":"sha256:a39b592541a33e73f580870bf022e517df3bac66856c3ae0ed9500abc43595a0"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/FSW5M2R4BRU5HF32IIWA6XSPLW/bundle.json","state_url":"https://pith.science/pith/FSW5M2R4BRU5HF32IIWA6XSPLW/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/FSW5M2R4BRU5HF32IIWA6XSPLW/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":"2026-08-06T12:22:33Z","links":{"resolver":"https://pith.science/pith/FSW5M2R4BRU5HF32IIWA6XSPLW","bundle":"https://pith.science/pith/FSW5M2R4BRU5HF32IIWA6XSPLW/bundle.json","state":"https://pith.science/pith/FSW5M2R4BRU5HF32IIWA6XSPLW/state.json","well_known_bundle":"https://pith.science/.well-known/pith/FSW5M2R4BRU5HF32IIWA6XSPLW/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2023:FSW5M2R4BRU5HF32IIWA6XSPLW","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":"15d8ee1c0ad3d064425a3909eb8ad218f82798030dd6e10d6c3fa9e3c50cfd91","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.ins-det","submitted_at":"2023-08-10T02:45:39Z","title_canon_sha256":"0319fa8e8e89181d44639789bc17426285d69676186274027c4019491eca1049"},"schema_version":"1.0","source":{"id":"2308.05302","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2308.05302","created_at":"2026-07-05T07:19:47Z"},{"alias_kind":"arxiv_version","alias_value":"2308.05302v2","created_at":"2026-07-05T07:19:47Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2308.05302","created_at":"2026-07-05T07:19:47Z"},{"alias_kind":"pith_short_12","alias_value":"FSW5M2R4BRU5","created_at":"2026-07-05T07:19:47Z"},{"alias_kind":"pith_short_16","alias_value":"FSW5M2R4BRU5HF32","created_at":"2026-07-05T07:19:47Z"},{"alias_kind":"pith_short_8","alias_value":"FSW5M2R4","created_at":"2026-07-05T07:19:47Z"}],"graph_snapshots":[{"event_id":"sha256:a39b592541a33e73f580870bf022e517df3bac66856c3ae0ed9500abc43595a0","target":"graph","created_at":"2026-07-05T07:19:47Z","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/2308.05302/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"A new ultra-low background high-purity germanium (HPGe) detector has been installed at the Kamioka underground experimental site. The background count rate in the energy range from 40 keV to 2700 keV is about 25% lower than that of the first HPGe detector installed in 2016, which has the same detector specification and similar shielding geometry. This paper describes the shielding configuration, including the cleaning of the material surface, the comparison of calibration data and simulation, the time variation of the background spectra, the sample measurement procedure, and some results of th","authors_text":"A. A. Suzuki, A. Minamino, H. Ikeda, H. Ito, H. Sekiya, K. Hosokawa, K. Ichimura, M. Ikeda, M. Kurasawa, S. Suzuki, Y. Gando, Y. Kishimoto","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.ins-det","submitted_at":"2023-08-10T02:45:39Z","title":"Development of a low-background HPGe detector at Kamioka Observatory"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2308.05302","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":"sha256:79abc291160b72572a2c15a356c691ff8d77d8958aa470798e303ca3280f8314","target":"record","created_at":"2026-07-05T07:19:47Z","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":"15d8ee1c0ad3d064425a3909eb8ad218f82798030dd6e10d6c3fa9e3c50cfd91","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.ins-det","submitted_at":"2023-08-10T02:45:39Z","title_canon_sha256":"0319fa8e8e89181d44639789bc17426285d69676186274027c4019491eca1049"},"schema_version":"1.0","source":{"id":"2308.05302","kind":"arxiv","version":2}},"canonical_sha256":"2cadd66a3c0c69d3977a422c0f5e4f5db095b61e26eb54cf5d4529cf8425ea24","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"2cadd66a3c0c69d3977a422c0f5e4f5db095b61e26eb54cf5d4529cf8425ea24","first_computed_at":"2026-07-05T07:19:47.987149Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T07:19:47.987149Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"dSurfkHLO1M3Dxc1Rgyip9HW9tTw5YeGR2KHQnF/Iiv4m+Aqhw6bJrDvInftNCn7mC2CiBdSjweSYhx29or/DQ==","signature_status":"signed_v1","signed_at":"2026-07-05T07:19:47.987658Z","signed_message":"canonical_sha256_bytes"},"source_id":"2308.05302","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:79abc291160b72572a2c15a356c691ff8d77d8958aa470798e303ca3280f8314","sha256:a39b592541a33e73f580870bf022e517df3bac66856c3ae0ed9500abc43595a0"],"state_sha256":"992faddcfb95956d1884c4af001de50f2d29564d57ca678168d6f1f4446e356e"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Oj4WzYMB+IOEBIqYtk3mxM+XMxuyYaILZjqLCuJe2AEC7laKOiKaOc0SLM5On2eO/ep2sgFB7NbZjQo7gGZJAQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-06T12:22:33.882849Z","bundle_sha256":"b9823eadf65666ab0c7ba1f0365f3ad6c93adfa3f406cab8a6202a705961e592"}}