{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2023:Z64NRHSLSSJUGDURMXQZDVZRU5","short_pith_number":"pith:Z64NRHSL","canonical_record":{"source":{"id":"2306.05436","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"stat.AP","submitted_at":"2023-06-08T01:45:06Z","cross_cats_sorted":["cs.CY"],"title_canon_sha256":"29d663c440872410e5d554b50b8c134792ac1860bd22c7dc4b535ae6c6c97b51","abstract_canon_sha256":"e9d59dbea1a2069f24893a1dc9de7441087a4bb4cc2bb7b9cbc94e862c633f32"},"schema_version":"1.0"},"canonical_sha256":"cfb8d89e4b9493430e9165e191d731a74b1af292324a3715964a28f9f0e605c1","source":{"kind":"arxiv","id":"2306.05436","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2306.05436","created_at":"2026-07-05T06:19:06Z"},{"alias_kind":"arxiv_version","alias_value":"2306.05436v1","created_at":"2026-07-05T06:19:06Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2306.05436","created_at":"2026-07-05T06:19:06Z"},{"alias_kind":"pith_short_12","alias_value":"Z64NRHSLSSJU","created_at":"2026-07-05T06:19:06Z"},{"alias_kind":"pith_short_16","alias_value":"Z64NRHSLSSJUGDUR","created_at":"2026-07-05T06:19:06Z"},{"alias_kind":"pith_short_8","alias_value":"Z64NRHSL","created_at":"2026-07-05T06:19:06Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2023:Z64NRHSLSSJUGDURMXQZDVZRU5","target":"record","payload":{"canonical_record":{"source":{"id":"2306.05436","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"stat.AP","submitted_at":"2023-06-08T01:45:06Z","cross_cats_sorted":["cs.CY"],"title_canon_sha256":"29d663c440872410e5d554b50b8c134792ac1860bd22c7dc4b535ae6c6c97b51","abstract_canon_sha256":"e9d59dbea1a2069f24893a1dc9de7441087a4bb4cc2bb7b9cbc94e862c633f32"},"schema_version":"1.0"},"canonical_sha256":"cfb8d89e4b9493430e9165e191d731a74b1af292324a3715964a28f9f0e605c1","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T06:19:06.091183Z","signature_b64":"XwfG1M9/F6Z9pf1WKQtZYwDO2iUoyy9cHgpnK2tOay0+B/1bYbGqa1KfL+m+41e7yA2N038TjbtbJ3R77uE5CA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"cfb8d89e4b9493430e9165e191d731a74b1af292324a3715964a28f9f0e605c1","last_reissued_at":"2026-07-05T06:19:06.090656Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T06:19:06.090656Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2306.05436","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":"2026-07-05T06:19:06Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"zYt75ZVOto3qb55E/yWciGvFPTcdioHhHN2Bb1VF9kJzEiuJc6tREBk+5aneiwYFlqBefdhMbPFskuY0La2tBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-31T20:41:51.355401Z"},"content_sha256":"84ee6669fcba105e342595b6d07954f3775757cb0595a215466817c128442845","schema_version":"1.0","event_id":"sha256:84ee6669fcba105e342595b6d07954f3775757cb0595a215466817c128442845"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2023:Z64NRHSLSSJUGDURMXQZDVZRU5","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Remaining Useful Life Modelling with an Escalator Health Condition Analytic System","license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","headline":"","cross_cats":["cs.CY"],"primary_cat":"stat.AP","authors_text":"Chris Chun Long Wong, Colman Yiu Wah Yeung, Edmond Yin San Yeung, Inez M. Zwetsloot, Jiaqi Qiu, Lishuai Li, William Ka Fai Lee, Yu Lin","submitted_at":"2023-06-08T01:45:06Z","abstract_excerpt":"The refurbishment of an escalator is usually linked with its design life as recommended by the manufacturer. However, the actual useful life of an escalator should be determined by its operating condition which is affected by the runtime, workload, maintenance quality, vibration, etc., rather than age only. The objective of this project is to develop a comprehensive health condition analytic system for escalators to support refurbishment decisions. The analytic system consists of four parts: 1) online data gathering and processing; 2) a dashboard for condition monitoring; 3) a health index mod"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2306.05436","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/2306.05436/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":"2026-07-05T06:19:06Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ZAXbatpbX+PhdHl3ciXjFJkwyMvNLL2278U/KihHijaOB2JWZDH6x7JANoo0nZzPE0Tz9m8tuRZDumErt1YADw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-31T20:41:51.356117Z"},"content_sha256":"b59d51fbfdfd2135a0bf41ad2d74ad949143ee94373aba63abc854493b91ac82","schema_version":"1.0","event_id":"sha256:b59d51fbfdfd2135a0bf41ad2d74ad949143ee94373aba63abc854493b91ac82"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/Z64NRHSLSSJUGDURMXQZDVZRU5/bundle.json","state_url":"https://pith.science/pith/Z64NRHSLSSJUGDURMXQZDVZRU5/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/Z64NRHSLSSJUGDURMXQZDVZRU5/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":"2026-07-31T20:41:51Z","links":{"resolver":"https://pith.science/pith/Z64NRHSLSSJUGDURMXQZDVZRU5","bundle":"https://pith.science/pith/Z64NRHSLSSJUGDURMXQZDVZRU5/bundle.json","state":"https://pith.science/pith/Z64NRHSLSSJUGDURMXQZDVZRU5/state.json","well_known_bundle":"https://pith.science/.well-known/pith/Z64NRHSLSSJUGDURMXQZDVZRU5/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2023:Z64NRHSLSSJUGDURMXQZDVZRU5","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":"e9d59dbea1a2069f24893a1dc9de7441087a4bb4cc2bb7b9cbc94e862c633f32","cross_cats_sorted":["cs.CY"],"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"stat.AP","submitted_at":"2023-06-08T01:45:06Z","title_canon_sha256":"29d663c440872410e5d554b50b8c134792ac1860bd22c7dc4b535ae6c6c97b51"},"schema_version":"1.0","source":{"id":"2306.05436","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2306.05436","created_at":"2026-07-05T06:19:06Z"},{"alias_kind":"arxiv_version","alias_value":"2306.05436v1","created_at":"2026-07-05T06:19:06Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2306.05436","created_at":"2026-07-05T06:19:06Z"},{"alias_kind":"pith_short_12","alias_value":"Z64NRHSLSSJU","created_at":"2026-07-05T06:19:06Z"},{"alias_kind":"pith_short_16","alias_value":"Z64NRHSLSSJUGDUR","created_at":"2026-07-05T06:19:06Z"},{"alias_kind":"pith_short_8","alias_value":"Z64NRHSL","created_at":"2026-07-05T06:19:06Z"}],"graph_snapshots":[{"event_id":"sha256:b59d51fbfdfd2135a0bf41ad2d74ad949143ee94373aba63abc854493b91ac82","target":"graph","created_at":"2026-07-05T06:19:06Z","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/2306.05436/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The refurbishment of an escalator is usually linked with its design life as recommended by the manufacturer. However, the actual useful life of an escalator should be determined by its operating condition which is affected by the runtime, workload, maintenance quality, vibration, etc., rather than age only. The objective of this project is to develop a comprehensive health condition analytic system for escalators to support refurbishment decisions. The analytic system consists of four parts: 1) online data gathering and processing; 2) a dashboard for condition monitoring; 3) a health index mod","authors_text":"Chris Chun Long Wong, Colman Yiu Wah Yeung, Edmond Yin San Yeung, Inez M. Zwetsloot, Jiaqi Qiu, Lishuai Li, William Ka Fai Lee, Yu Lin","cross_cats":["cs.CY"],"headline":"","license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"stat.AP","submitted_at":"2023-06-08T01:45:06Z","title":"Remaining Useful Life Modelling with an Escalator Health Condition Analytic System"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2306.05436","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":"sha256:84ee6669fcba105e342595b6d07954f3775757cb0595a215466817c128442845","target":"record","created_at":"2026-07-05T06:19:06Z","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":"e9d59dbea1a2069f24893a1dc9de7441087a4bb4cc2bb7b9cbc94e862c633f32","cross_cats_sorted":["cs.CY"],"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"stat.AP","submitted_at":"2023-06-08T01:45:06Z","title_canon_sha256":"29d663c440872410e5d554b50b8c134792ac1860bd22c7dc4b535ae6c6c97b51"},"schema_version":"1.0","source":{"id":"2306.05436","kind":"arxiv","version":1}},"canonical_sha256":"cfb8d89e4b9493430e9165e191d731a74b1af292324a3715964a28f9f0e605c1","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"cfb8d89e4b9493430e9165e191d731a74b1af292324a3715964a28f9f0e605c1","first_computed_at":"2026-07-05T06:19:06.090656Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T06:19:06.090656Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"XwfG1M9/F6Z9pf1WKQtZYwDO2iUoyy9cHgpnK2tOay0+B/1bYbGqa1KfL+m+41e7yA2N038TjbtbJ3R77uE5CA==","signature_status":"signed_v1","signed_at":"2026-07-05T06:19:06.091183Z","signed_message":"canonical_sha256_bytes"},"source_id":"2306.05436","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:84ee6669fcba105e342595b6d07954f3775757cb0595a215466817c128442845","sha256:b59d51fbfdfd2135a0bf41ad2d74ad949143ee94373aba63abc854493b91ac82"],"state_sha256":"767d3ec9a2fd4f4846e2971e5c124566ae54c7a001dfad8648ba36fb61454552"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"81AoOuJVVLD0HsNUMg5OvjeXb8uXAOEYWL15yZ5b/adQC3/xMsdxfsqNI/PDbxYjOfSo3d11zKMgrXgL4X47CQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-31T20:41:51.360560Z","bundle_sha256":"fbc108db24e246b75b656f83e01eb3e6f7dbc182f35433bd77580baef1d1c518"}}