{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2026:NB5WSDNOWIX2DRCTJUGLHEDCA5","short_pith_number":"pith:NB5WSDNO","canonical_record":{"source":{"id":"2607.20354","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.ins-det","submitted_at":"2026-07-22T16:41:21Z","cross_cats_sorted":["hep-ex"],"title_canon_sha256":"3f29bb3f0531b8073d2c8a983c92ccf90ed52b198b108df39a887ac03e515bfe","abstract_canon_sha256":"58ed9add1e95d3e1559fd9cf3262e4026ff183cd9699b25853dba32e28017891"},"schema_version":"1.0"},"canonical_sha256":"687b690daeb22fa1c4534d0cb39062074e5bd580f2d26848d4828308a0550ab8","source":{"kind":"arxiv","id":"2607.20354","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2607.20354","created_at":"2026-07-23T01:25:16Z"},{"alias_kind":"arxiv_version","alias_value":"2607.20354v1","created_at":"2026-07-23T01:25:16Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2607.20354","created_at":"2026-07-23T01:25:16Z"},{"alias_kind":"pith_short_12","alias_value":"NB5WSDNOWIX2","created_at":"2026-07-23T01:25:16Z"},{"alias_kind":"pith_short_16","alias_value":"NB5WSDNOWIX2DRCT","created_at":"2026-07-23T01:25:16Z"},{"alias_kind":"pith_short_8","alias_value":"NB5WSDNO","created_at":"2026-07-23T01:25:16Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2026:NB5WSDNOWIX2DRCTJUGLHEDCA5","target":"record","payload":{"canonical_record":{"source":{"id":"2607.20354","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.ins-det","submitted_at":"2026-07-22T16:41:21Z","cross_cats_sorted":["hep-ex"],"title_canon_sha256":"3f29bb3f0531b8073d2c8a983c92ccf90ed52b198b108df39a887ac03e515bfe","abstract_canon_sha256":"58ed9add1e95d3e1559fd9cf3262e4026ff183cd9699b25853dba32e28017891"},"schema_version":"1.0"},"canonical_sha256":"687b690daeb22fa1c4534d0cb39062074e5bd580f2d26848d4828308a0550ab8","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-23T01:25:16.152614Z","signature_b64":"AShc0gt1pdLtyn+042mMFXS2JG6oa58LdSEGun0MVcYx5kc/QfJphMxnRAE84ZPqu4JXuAGuM0vcR3aEAhLZAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"687b690daeb22fa1c4534d0cb39062074e5bd580f2d26848d4828308a0550ab8","last_reissued_at":"2026-07-23T01:25:16.151781Z","signature_status":"signed_v1","first_computed_at":"2026-07-23T01:25:16.151781Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2607.20354","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":"2026-07-23T01:25:16Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"XdIKqfAYNMq8N9ZsFmptWsaEt4hvu92sV5ON0SzjUGvv9/475h9ZRZBImvRfs4dscGVhr+/isW9YOr8by6+GDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-22T00:40:00.343629Z"},"content_sha256":"b0e468be9350afd263b2074a80a5ec21d6883086bab675ce4f276b159c453314","schema_version":"1.0","event_id":"sha256:b0e468be9350afd263b2074a80a5ec21d6883086bab675ce4f276b159c453314"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2026:NB5WSDNOWIX2DRCTJUGLHEDCA5","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"High-accuracy ultrasonic positioning of calibration sources in the Jiangmen Underground Neutrino Observatory","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["hep-ex"],"primary_cat":"physics.ins-det","authors_text":"Changsheng Ye, Daijin Li, Diwash Ghimire, Duo Teng, Guolei Zhu, Haojing Lai, Jianglai Liu, Jiaqi Hui, Junjie Jiang, Junting Huang, Kai Luo, Linwei Tao, Ping Zhang, Qian Chen, Qi Wang, Rongcheng Chen, Rui Li, Tao Zhang, Yazhen Shi, Yilin Liao, Yue Meng, Zhangmin Chen, Ziqian Xiang","submitted_at":"2026-07-22T16:41:21Z","abstract_excerpt":"Precise source positioning is essential for detector calibration in large liquid scintillator detectors such as JUNO, particularly in regions where purely mechanical control is insufficient. An ultrasonic positioning system has been developed to reconstruct the three-dimensional coordinates of a calibration source without interfering with photon collection or contaminating the liquid scintillator. The method combines a sound-speed modeling based on dedicated laboratory measurements and in-detector temperature profiles, waveform-based arrival-time reconstruction, and an in-situ calibration of t"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2607.20354","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/2607.20354/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":"2026-07-23T01:25:16Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"mUzAl8wETwu46nV0jjc74ZYm6fI61beODOrfxxUD1R0Pu8Nt2uJRriUZHLsqyY9PT4W5Qs6wHYoavDO6N1p3Cw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-22T00:40:00.344169Z"},"content_sha256":"4528619113cc4b1088e21129b26f6df011be52c8069ede227672ee66e4d8100b","schema_version":"1.0","event_id":"sha256:4528619113cc4b1088e21129b26f6df011be52c8069ede227672ee66e4d8100b"},{"event_type":"integrity_finding","subject_pith_number":"pith:2026:NB5WSDNOWIX2DRCTJUGLHEDCA5","target":"integrity","payload":{"note":"DOI in the printed bibliography is fragmented by whitespace or line breaks. A longer candidate (10.1088/1748-0221/13/12/T12001) was visible in the surrounding text but could not be confirmed against doi.org as printed.","snippet":"K. Feng, D. Li, Y. Shi, K. Qin, K. Luo, A novel remotely operated vehicle as the calibration system in juno, Journal of Instrumentation 13 (12) (2018) T12001.doi:10.1088/1748-0221/ 13/12/T12001. URLhttps://doi.org/10.1088/1748-0221/13/12/T1","arxiv_id":"2607.20354","detector":"doi_compliance","evidence":{"ref_index":3,"verdict_class":"incontrovertible","resolved_title":null,"printed_excerpt":"10.1088/1748-0221/","reconstructed_doi":"10.1088/1748-0221/13/12/T12001"},"severity":"advisory","ref_index":3,"audited_at":"2026-08-01T10:08:56.900663Z","event_type":"pith.integrity.v1","detected_doi":"10.1088/1748-0221/13/12/T12001","detector_url":"https://pith.science/pith-integrity-protocol#doi_compliance","external_url":null,"finding_type":"recoverable_identifier","evidence_hash":"11e69a6d5b3799da1623d6e749eb708cc62e0806d53b943462006e77dc40cf5d","paper_version":1,"verdict_class":"incontrovertible","resolved_title":null,"detector_version":"1.1.0","detected_arxiv_id":null,"integrity_event_id":15585,"payload_sha256":"058a6c3f795b99ee0af9ef0053cfe2c3d52316b5aec83773c323f25d707717e8","signature_b64":"izU7F+SBEsVHhPP6txOj6J205WJeFpCEMBbHNWILzXxECAu0AwaYAe/Xo3K0AtalZP3ZuMAcw5yYMMnZlcbfAg==","signing_key_id":"pith-v1-2026-05"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-08-01T10:13:28Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"BGucC8wgAbL5Ra0W625OCdjpNa95dW9PeAhjoxhfRvYOB4A74p0BKB1atexR8tLIFg9rp+w7hvuVT1uUyVDNBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-22T00:40:00.347966Z"},"content_sha256":"efd0e4bbe053b1a37b4b95f969e05e8b1e39221b088696e49f93558669af72e9","schema_version":"1.0","event_id":"sha256:efd0e4bbe053b1a37b4b95f969e05e8b1e39221b088696e49f93558669af72e9"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/NB5WSDNOWIX2DRCTJUGLHEDCA5/bundle.json","state_url":"https://pith.science/pith/NB5WSDNOWIX2DRCTJUGLHEDCA5/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/NB5WSDNOWIX2DRCTJUGLHEDCA5/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":"2026-08-22T00:40:00Z","links":{"resolver":"https://pith.science/pith/NB5WSDNOWIX2DRCTJUGLHEDCA5","bundle":"https://pith.science/pith/NB5WSDNOWIX2DRCTJUGLHEDCA5/bundle.json","state":"https://pith.science/pith/NB5WSDNOWIX2DRCTJUGLHEDCA5/state.json","well_known_bundle":"https://pith.science/.well-known/pith/NB5WSDNOWIX2DRCTJUGLHEDCA5/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:NB5WSDNOWIX2DRCTJUGLHEDCA5","merge_version":"pith-open-graph-merge-v1","event_count":3,"valid_event_count":3,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"58ed9add1e95d3e1559fd9cf3262e4026ff183cd9699b25853dba32e28017891","cross_cats_sorted":["hep-ex"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.ins-det","submitted_at":"2026-07-22T16:41:21Z","title_canon_sha256":"3f29bb3f0531b8073d2c8a983c92ccf90ed52b198b108df39a887ac03e515bfe"},"schema_version":"1.0","source":{"id":"2607.20354","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2607.20354","created_at":"2026-07-23T01:25:16Z"},{"alias_kind":"arxiv_version","alias_value":"2607.20354v1","created_at":"2026-07-23T01:25:16Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2607.20354","created_at":"2026-07-23T01:25:16Z"},{"alias_kind":"pith_short_12","alias_value":"NB5WSDNOWIX2","created_at":"2026-07-23T01:25:16Z"},{"alias_kind":"pith_short_16","alias_value":"NB5WSDNOWIX2DRCT","created_at":"2026-07-23T01:25:16Z"},{"alias_kind":"pith_short_8","alias_value":"NB5WSDNO","created_at":"2026-07-23T01:25:16Z"}],"graph_snapshots":[{"event_id":"sha256:4528619113cc4b1088e21129b26f6df011be52c8069ede227672ee66e4d8100b","target":"graph","created_at":"2026-07-23T01:25:16Z","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/2607.20354/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Precise source positioning is essential for detector calibration in large liquid scintillator detectors such as JUNO, particularly in regions where purely mechanical control is insufficient. An ultrasonic positioning system has been developed to reconstruct the three-dimensional coordinates of a calibration source without interfering with photon collection or contaminating the liquid scintillator. The method combines a sound-speed modeling based on dedicated laboratory measurements and in-detector temperature profiles, waveform-based arrival-time reconstruction, and an in-situ calibration of t","authors_text":"Changsheng Ye, Daijin Li, Diwash Ghimire, Duo Teng, Guolei Zhu, Haojing Lai, Jianglai Liu, Jiaqi Hui, Junjie Jiang, Junting Huang, Kai Luo, Linwei Tao, Ping Zhang, Qian Chen, Qi Wang, Rongcheng Chen, Rui Li, Tao Zhang, Yazhen Shi, Yilin Liao, Yue Meng, Zhangmin Chen, Ziqian Xiang","cross_cats":["hep-ex"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.ins-det","submitted_at":"2026-07-22T16:41:21Z","title":"High-accuracy ultrasonic positioning of calibration sources in the Jiangmen Underground Neutrino Observatory"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2607.20354","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:b0e468be9350afd263b2074a80a5ec21d6883086bab675ce4f276b159c453314","target":"record","created_at":"2026-07-23T01:25:16Z","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":"58ed9add1e95d3e1559fd9cf3262e4026ff183cd9699b25853dba32e28017891","cross_cats_sorted":["hep-ex"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.ins-det","submitted_at":"2026-07-22T16:41:21Z","title_canon_sha256":"3f29bb3f0531b8073d2c8a983c92ccf90ed52b198b108df39a887ac03e515bfe"},"schema_version":"1.0","source":{"id":"2607.20354","kind":"arxiv","version":1}},"canonical_sha256":"687b690daeb22fa1c4534d0cb39062074e5bd580f2d26848d4828308a0550ab8","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"687b690daeb22fa1c4534d0cb39062074e5bd580f2d26848d4828308a0550ab8","first_computed_at":"2026-07-23T01:25:16.151781Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-23T01:25:16.151781Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"AShc0gt1pdLtyn+042mMFXS2JG6oa58LdSEGun0MVcYx5kc/QfJphMxnRAE84ZPqu4JXuAGuM0vcR3aEAhLZAg==","signature_status":"signed_v1","signed_at":"2026-07-23T01:25:16.152614Z","signed_message":"canonical_sha256_bytes"},"source_id":"2607.20354","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:b0e468be9350afd263b2074a80a5ec21d6883086bab675ce4f276b159c453314","sha256:4528619113cc4b1088e21129b26f6df011be52c8069ede227672ee66e4d8100b","sha256:efd0e4bbe053b1a37b4b95f969e05e8b1e39221b088696e49f93558669af72e9"],"state_sha256":"42e38081d065af87776ad1ce9f2a6079c79eeb98c918b6367414b4a02ab912bd"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"YUDLX6P03Z3TP6ptjTFTNzD/rw+IDVF1MBcFineTctXbsXlEy2NYfs2ufUwlKlFdYch3eW10+zsHHvrU+6AiBg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-22T00:40:00.350192Z","bundle_sha256":"5a7afae600ee1e1ac3dd003e8fc4cd8dae1a591024aa8c2f167dccea006500a1"}}