{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2026:5OBPY324MG5T3OBMPLHFJLAFQK","short_pith_number":"pith:5OBPY324","canonical_record":{"source":{"id":"2607.29657","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.AI","submitted_at":"2026-07-31T17:37:34Z","cross_cats_sorted":[],"title_canon_sha256":"5ac5ece4924d9d0a29aba355e7b999d111f29e7d82591aad817140389c72350f","abstract_canon_sha256":"b6f2dbdb5d906435057a62e71a3178f04c9f2da3db6023c786d15f010f2db2bd"},"schema_version":"1.0"},"canonical_sha256":"eb82fc6f5c61bb3db82c7ace54ac0582acad50618c77a586a0b4bf6f5e280db1","source":{"kind":"arxiv","id":"2607.29657","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2607.29657","created_at":"2026-08-03T01:41:40Z"},{"alias_kind":"arxiv_version","alias_value":"2607.29657v1","created_at":"2026-08-03T01:41:40Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2607.29657","created_at":"2026-08-03T01:41:40Z"},{"alias_kind":"pith_short_12","alias_value":"5OBPY324MG5T","created_at":"2026-08-03T01:41:40Z"},{"alias_kind":"pith_short_16","alias_value":"5OBPY324MG5T3OBM","created_at":"2026-08-03T01:41:40Z"},{"alias_kind":"pith_short_8","alias_value":"5OBPY324","created_at":"2026-08-03T01:41:40Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2026:5OBPY324MG5T3OBMPLHFJLAFQK","target":"record","payload":{"canonical_record":{"source":{"id":"2607.29657","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.AI","submitted_at":"2026-07-31T17:37:34Z","cross_cats_sorted":[],"title_canon_sha256":"5ac5ece4924d9d0a29aba355e7b999d111f29e7d82591aad817140389c72350f","abstract_canon_sha256":"b6f2dbdb5d906435057a62e71a3178f04c9f2da3db6023c786d15f010f2db2bd"},"schema_version":"1.0"},"canonical_sha256":"eb82fc6f5c61bb3db82c7ace54ac0582acad50618c77a586a0b4bf6f5e280db1","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-08-03T01:41:40.590094Z","signature_b64":"qWgR4b8u6GQqDGxy4PnuBicc7BD/XPJAMJdK23dPVYpWddpkvEhVSHzNULXHgeH2pLgSTIdJZXFryS8k62nlBg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"eb82fc6f5c61bb3db82c7ace54ac0582acad50618c77a586a0b4bf6f5e280db1","last_reissued_at":"2026-08-03T01:41:40.588336Z","signature_status":"signed_v1","first_computed_at":"2026-08-03T01:41:40.588336Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2607.29657","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":"2026-08-03T01:41:40Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ZnxrgPthqGXxDgJFAVTeZKCV0MJwVNrOZXYqU+5Lj5yTsBgNECQgEvEE2AtAXXGJiHl49chrWy9DYwIxXiCWDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-11T01:05:15.212701Z"},"content_sha256":"a93f7c2393856484f5d20aa7076d2a46f5d94f57698420db947f0fbb5c8d716a","schema_version":"1.0","event_id":"sha256:a93f7c2393856484f5d20aa7076d2a46f5d94f57698420db947f0fbb5c8d716a"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2026:5OBPY324MG5T3OBMPLHFJLAFQK","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Development of FDD-ON: an Ontology for VAV HVAC System Fault Detection and Diagnostics","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cs.AI","authors_text":"Bo Shen, Brian Fricke, Chujie Lu, George Zhuang, Han Hu, James Lo, Jamie Lian, Jiajing Huang, Mingkan Zhang, Rui Tang, Shi Ye, Yimin Chen, Yun Zhang","submitted_at":"2026-07-31T17:37:34Z","abstract_excerpt":"Fault detection and diagnosis (FDD) technology is essential for improving HVAC system reliability, energy efficiency, and maintenance effectiveness. However, effective deployment of FDD solutions in buildings requires structured domain knowledge that can bridge heterogeneous data sources, diverse equipment types, and varied diagnostic outputs. Limited data interpretability and interoperability within the FDD domain have led to fragmented information silos, hindering the implementation of FDD and related applications, such as the digital twin-enabled FDD frameworks and artificial intelligence ("},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2607.29657","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/2607.29657/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":"2026-08-03T01:41:40Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"bDZDU0eLN35uekXtV1cEcTCX2kf9sdqRhBz1VgoRanW0jyY4uVOTpXcprHfCQ9VQTQzTv2jX/UOGH+BVPafjAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-11T01:05:15.213280Z"},"content_sha256":"253b5599cdd29fc333ca99ac628cfb6bfb4116bc62cbe31c2c102af8f5858967","schema_version":"1.0","event_id":"sha256:253b5599cdd29fc333ca99ac628cfb6bfb4116bc62cbe31c2c102af8f5858967"},{"event_type":"integrity_finding","subject_pith_number":"pith:2026:5OBPY324MG5T3OBMPLHFJLAFQK","target":"integrity","payload":{"note":"DOI in the printed bibliography is fragmented by whitespace or line breaks. A longer candidate (10.1038/s41597-025-05063-z) was visible in the surrounding text but could not be confirmed against doi.org as printed.","snippet":"S. Jung, Y. Yoon, P. Im, Datasets of Faults in Variable Air Volume Terminal Units in a Multi -Zone Commercial Building, Sci. Data 12 (2025) 763. https://doi.org/10.1038/s41597 -025-05063-z","arxiv_id":"2607.29657","detector":"doi_compliance","evidence":{"ref_index":97,"verdict_class":"incontrovertible","resolved_title":null,"printed_excerpt":"10.1038/s41597","reconstructed_doi":"10.1038/s41597-025-05063-z"},"severity":"advisory","ref_index":97,"audited_at":"2026-08-03T02:38:13.371447Z","event_type":"pith.integrity.v1","detected_doi":"10.1038/s41597-025-05063-z","detector_url":"https://pith.science/pith-integrity-protocol#doi_compliance","external_url":null,"finding_type":"recoverable_identifier","evidence_hash":"610aa349fec8050688a55154df5f9bbeedc6085b8bcde32fe01e7035f9360048","paper_version":1,"verdict_class":"incontrovertible","resolved_title":null,"detector_version":"1.1.0","detected_arxiv_id":null,"integrity_event_id":17531,"payload_sha256":"2a74a4a52bfc38a2845da02053fdc91ca83571ef7dc4418eb691d630fd654dd5","signature_b64":"S3GkrDxoWUWlIcZJZpT/hNth4JIkf4RZJpU0obOYqcjUayfG9K977lyPrHAex11QfFnCvtC4wHsv3taKXoMgBg==","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":"2026-08-03T02:38:28Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"rket/ihIjwtFz/RW61OPlpXIpVYTQHL25ZRszjRJ3V6ow7Jx2fhUvQfnEx/1YM6XpM3ZKRUNFteZJKA+tsXVDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-11T01:05:15.217076Z"},"content_sha256":"2b514049e9930442708df6629e1f564ad3cfa321a12a81c765d15e5545e31249","schema_version":"1.0","event_id":"sha256:2b514049e9930442708df6629e1f564ad3cfa321a12a81c765d15e5545e31249"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/5OBPY324MG5T3OBMPLHFJLAFQK/bundle.json","state_url":"https://pith.science/pith/5OBPY324MG5T3OBMPLHFJLAFQK/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/5OBPY324MG5T3OBMPLHFJLAFQK/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":"2026-08-11T01:05:15Z","links":{"resolver":"https://pith.science/pith/5OBPY324MG5T3OBMPLHFJLAFQK","bundle":"https://pith.science/pith/5OBPY324MG5T3OBMPLHFJLAFQK/bundle.json","state":"https://pith.science/pith/5OBPY324MG5T3OBMPLHFJLAFQK/state.json","well_known_bundle":"https://pith.science/.well-known/pith/5OBPY324MG5T3OBMPLHFJLAFQK/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:5OBPY324MG5T3OBMPLHFJLAFQK","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":"b6f2dbdb5d906435057a62e71a3178f04c9f2da3db6023c786d15f010f2db2bd","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.AI","submitted_at":"2026-07-31T17:37:34Z","title_canon_sha256":"5ac5ece4924d9d0a29aba355e7b999d111f29e7d82591aad817140389c72350f"},"schema_version":"1.0","source":{"id":"2607.29657","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2607.29657","created_at":"2026-08-03T01:41:40Z"},{"alias_kind":"arxiv_version","alias_value":"2607.29657v1","created_at":"2026-08-03T01:41:40Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2607.29657","created_at":"2026-08-03T01:41:40Z"},{"alias_kind":"pith_short_12","alias_value":"5OBPY324MG5T","created_at":"2026-08-03T01:41:40Z"},{"alias_kind":"pith_short_16","alias_value":"5OBPY324MG5T3OBM","created_at":"2026-08-03T01:41:40Z"},{"alias_kind":"pith_short_8","alias_value":"5OBPY324","created_at":"2026-08-03T01:41:40Z"}],"graph_snapshots":[{"event_id":"sha256:253b5599cdd29fc333ca99ac628cfb6bfb4116bc62cbe31c2c102af8f5858967","target":"graph","created_at":"2026-08-03T01:41:40Z","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/2607.29657/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Fault detection and diagnosis (FDD) technology is essential for improving HVAC system reliability, energy efficiency, and maintenance effectiveness. However, effective deployment of FDD solutions in buildings requires structured domain knowledge that can bridge heterogeneous data sources, diverse equipment types, and varied diagnostic outputs. Limited data interpretability and interoperability within the FDD domain have led to fragmented information silos, hindering the implementation of FDD and related applications, such as the digital twin-enabled FDD frameworks and artificial intelligence (","authors_text":"Bo Shen, Brian Fricke, Chujie Lu, George Zhuang, Han Hu, James Lo, Jamie Lian, Jiajing Huang, Mingkan Zhang, Rui Tang, Shi Ye, Yimin Chen, Yun Zhang","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.AI","submitted_at":"2026-07-31T17:37:34Z","title":"Development of FDD-ON: an Ontology for VAV HVAC System Fault Detection and Diagnostics"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2607.29657","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:a93f7c2393856484f5d20aa7076d2a46f5d94f57698420db947f0fbb5c8d716a","target":"record","created_at":"2026-08-03T01:41:40Z","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":"b6f2dbdb5d906435057a62e71a3178f04c9f2da3db6023c786d15f010f2db2bd","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.AI","submitted_at":"2026-07-31T17:37:34Z","title_canon_sha256":"5ac5ece4924d9d0a29aba355e7b999d111f29e7d82591aad817140389c72350f"},"schema_version":"1.0","source":{"id":"2607.29657","kind":"arxiv","version":1}},"canonical_sha256":"eb82fc6f5c61bb3db82c7ace54ac0582acad50618c77a586a0b4bf6f5e280db1","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"eb82fc6f5c61bb3db82c7ace54ac0582acad50618c77a586a0b4bf6f5e280db1","first_computed_at":"2026-08-03T01:41:40.588336Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-08-03T01:41:40.588336Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"qWgR4b8u6GQqDGxy4PnuBicc7BD/XPJAMJdK23dPVYpWddpkvEhVSHzNULXHgeH2pLgSTIdJZXFryS8k62nlBg==","signature_status":"signed_v1","signed_at":"2026-08-03T01:41:40.590094Z","signed_message":"canonical_sha256_bytes"},"source_id":"2607.29657","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:a93f7c2393856484f5d20aa7076d2a46f5d94f57698420db947f0fbb5c8d716a","sha256:253b5599cdd29fc333ca99ac628cfb6bfb4116bc62cbe31c2c102af8f5858967","sha256:2b514049e9930442708df6629e1f564ad3cfa321a12a81c765d15e5545e31249"],"state_sha256":"25bf57ae39b3657527583dbedd026eff237bc61d8cfa6cf0f468ff8217f8e74c"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"5PM/S60Snf18tiuM28YCZKetD6/tsNbMiF1cFCtByHzmqY0oVftfcA7tmloZxpT11eXhLucTsXgVHX8VpRORCQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-11T01:05:15.219685Z","bundle_sha256":"ca48eb9f6eb1446e963e1806c4a431616e87206faee35e0b78a8d05c72fc4971"}}