{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2020:7ZVDPARU7GB5BRE7W2KQ5VXGKY","short_pith_number":"pith:7ZVDPARU","canonical_record":{"source":{"id":"2006.04231","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SP","submitted_at":"2020-06-07T18:51:54Z","cross_cats_sorted":[],"title_canon_sha256":"4271efad43219dc1f59e9ab7bff61d58d669045755291a111bacc803d6e6a481","abstract_canon_sha256":"64303490146604dddf2b07ec2fb2a702ab820b19f0dfbbe31783dbfc5054044a"},"schema_version":"1.0"},"canonical_sha256":"fe6a378234f983d0c49fb6950ed6e65614b9a7284ec179492a6d016961827c24","source":{"kind":"arxiv","id":"2006.04231","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2006.04231","created_at":"2026-07-05T03:14:01Z"},{"alias_kind":"arxiv_version","alias_value":"2006.04231v1","created_at":"2026-07-05T03:14:01Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2006.04231","created_at":"2026-07-05T03:14:01Z"},{"alias_kind":"pith_short_12","alias_value":"7ZVDPARU7GB5","created_at":"2026-07-05T03:14:01Z"},{"alias_kind":"pith_short_16","alias_value":"7ZVDPARU7GB5BRE7","created_at":"2026-07-05T03:14:01Z"},{"alias_kind":"pith_short_8","alias_value":"7ZVDPARU","created_at":"2026-07-05T03:14:01Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2020:7ZVDPARU7GB5BRE7W2KQ5VXGKY","target":"record","payload":{"canonical_record":{"source":{"id":"2006.04231","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SP","submitted_at":"2020-06-07T18:51:54Z","cross_cats_sorted":[],"title_canon_sha256":"4271efad43219dc1f59e9ab7bff61d58d669045755291a111bacc803d6e6a481","abstract_canon_sha256":"64303490146604dddf2b07ec2fb2a702ab820b19f0dfbbe31783dbfc5054044a"},"schema_version":"1.0"},"canonical_sha256":"fe6a378234f983d0c49fb6950ed6e65614b9a7284ec179492a6d016961827c24","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T03:14:01.915252Z","signature_b64":"HkttssB7G3FZGnGT30+imZVxIIs/0akbzQPrMjLIgFtN/aAF4vz2QhsnfF63suEl6npkoblh02Yv4blYmpcTDQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"fe6a378234f983d0c49fb6950ed6e65614b9a7284ec179492a6d016961827c24","last_reissued_at":"2026-07-05T03:14:01.914789Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T03:14:01.914789Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2006.04231","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":"2026-07-05T03:14:01Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"5XiIWpc06wRirspe++WPorl9BgmcUk9kCPG2Gcq9Ajs0G+pWQ7wEaWdjlT970vaAOVCv7+fQ3pkejkF+KC3QAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-16T04:12:12.618746Z"},"content_sha256":"37f9103acfca0b8481ff42dfe7d9383e68b160d29f1158bd157fcabf2e19bbb7","schema_version":"1.0","event_id":"sha256:37f9103acfca0b8481ff42dfe7d9383e68b160d29f1158bd157fcabf2e19bbb7"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2020:7ZVDPARU7GB5BRE7W2KQ5VXGKY","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"In-Ear Measurement of Blood Oxygen Saturation: An Ambulatory Tool Needed To Detect The Delayed Life-Threatening Hypoxaemia in COVID-19","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"eess.SP","authors_text":"Danilo P. Mandic, Harry J. Davies, Ian Williams, Nicholas S. Peters","submitted_at":"2020-06-07T18:51:54Z","abstract_excerpt":"Non-invasive ambulatory estimation of blood oxygen saturation has emerged as an important clinical requirement to detect hypoxemia in the delayed post-infective phase of COVID-19, where dangerous hypoxia may occur in the absence of subjective breathlessness. This immediate clinical driver, combined with the general quest for more personalised health data, means that pulse oximetry measurement of capillary oxygen saturation (SpO2) will likely expand into both the clinical and consumer market of wearable health technology in the near future. In this study, we set out to establish the feasibility"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2006.04231","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/2006.04231/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":"2026-07-05T03:14:01Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ag/i4m5aGTBvUqqOszgmf6z2JxK1LLWKXBJwBMMg+dgSjwn2uPVQyrhg9KICQA6oz7KfrdG6OeYz/whe0X7gAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-16T04:12:12.619265Z"},"content_sha256":"eed626408ef09adb3d797a1f72dc76ccbcdd1fa66c2a6c4ebae20e08d409e324","schema_version":"1.0","event_id":"sha256:eed626408ef09adb3d797a1f72dc76ccbcdd1fa66c2a6c4ebae20e08d409e324"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/7ZVDPARU7GB5BRE7W2KQ5VXGKY/bundle.json","state_url":"https://pith.science/pith/7ZVDPARU7GB5BRE7W2KQ5VXGKY/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/7ZVDPARU7GB5BRE7W2KQ5VXGKY/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":"2026-08-16T04:12:12Z","links":{"resolver":"https://pith.science/pith/7ZVDPARU7GB5BRE7W2KQ5VXGKY","bundle":"https://pith.science/pith/7ZVDPARU7GB5BRE7W2KQ5VXGKY/bundle.json","state":"https://pith.science/pith/7ZVDPARU7GB5BRE7W2KQ5VXGKY/state.json","well_known_bundle":"https://pith.science/.well-known/pith/7ZVDPARU7GB5BRE7W2KQ5VXGKY/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:7ZVDPARU7GB5BRE7W2KQ5VXGKY","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":"64303490146604dddf2b07ec2fb2a702ab820b19f0dfbbe31783dbfc5054044a","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SP","submitted_at":"2020-06-07T18:51:54Z","title_canon_sha256":"4271efad43219dc1f59e9ab7bff61d58d669045755291a111bacc803d6e6a481"},"schema_version":"1.0","source":{"id":"2006.04231","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2006.04231","created_at":"2026-07-05T03:14:01Z"},{"alias_kind":"arxiv_version","alias_value":"2006.04231v1","created_at":"2026-07-05T03:14:01Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2006.04231","created_at":"2026-07-05T03:14:01Z"},{"alias_kind":"pith_short_12","alias_value":"7ZVDPARU7GB5","created_at":"2026-07-05T03:14:01Z"},{"alias_kind":"pith_short_16","alias_value":"7ZVDPARU7GB5BRE7","created_at":"2026-07-05T03:14:01Z"},{"alias_kind":"pith_short_8","alias_value":"7ZVDPARU","created_at":"2026-07-05T03:14:01Z"}],"graph_snapshots":[{"event_id":"sha256:eed626408ef09adb3d797a1f72dc76ccbcdd1fa66c2a6c4ebae20e08d409e324","target":"graph","created_at":"2026-07-05T03:14:01Z","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/2006.04231/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Non-invasive ambulatory estimation of blood oxygen saturation has emerged as an important clinical requirement to detect hypoxemia in the delayed post-infective phase of COVID-19, where dangerous hypoxia may occur in the absence of subjective breathlessness. This immediate clinical driver, combined with the general quest for more personalised health data, means that pulse oximetry measurement of capillary oxygen saturation (SpO2) will likely expand into both the clinical and consumer market of wearable health technology in the near future. In this study, we set out to establish the feasibility","authors_text":"Danilo P. Mandic, Harry J. Davies, Ian Williams, Nicholas S. Peters","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SP","submitted_at":"2020-06-07T18:51:54Z","title":"In-Ear Measurement of Blood Oxygen Saturation: An Ambulatory Tool Needed To Detect The Delayed Life-Threatening Hypoxaemia in COVID-19"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2006.04231","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":"sha256:37f9103acfca0b8481ff42dfe7d9383e68b160d29f1158bd157fcabf2e19bbb7","target":"record","created_at":"2026-07-05T03:14:01Z","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":"64303490146604dddf2b07ec2fb2a702ab820b19f0dfbbe31783dbfc5054044a","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SP","submitted_at":"2020-06-07T18:51:54Z","title_canon_sha256":"4271efad43219dc1f59e9ab7bff61d58d669045755291a111bacc803d6e6a481"},"schema_version":"1.0","source":{"id":"2006.04231","kind":"arxiv","version":1}},"canonical_sha256":"fe6a378234f983d0c49fb6950ed6e65614b9a7284ec179492a6d016961827c24","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"fe6a378234f983d0c49fb6950ed6e65614b9a7284ec179492a6d016961827c24","first_computed_at":"2026-07-05T03:14:01.914789Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T03:14:01.914789Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"HkttssB7G3FZGnGT30+imZVxIIs/0akbzQPrMjLIgFtN/aAF4vz2QhsnfF63suEl6npkoblh02Yv4blYmpcTDQ==","signature_status":"signed_v1","signed_at":"2026-07-05T03:14:01.915252Z","signed_message":"canonical_sha256_bytes"},"source_id":"2006.04231","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:37f9103acfca0b8481ff42dfe7d9383e68b160d29f1158bd157fcabf2e19bbb7","sha256:eed626408ef09adb3d797a1f72dc76ccbcdd1fa66c2a6c4ebae20e08d409e324"],"state_sha256":"d6a0216579def331d55ae3e4d5c34c19486b445cec70f865ac75348715f069f1"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Y1nGVx9N3JE326eC4Mn2rUcK9L5LkxHBh0CEG4HwFAfyCTOTqBlnjcZNjeHCBpuGTG2v9THItLVzA0lbAdi4BA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-16T04:12:12.624981Z","bundle_sha256":"abd5aad6e775a72f56f25e393f5a4fbb3e40829e666c058f1edab0827a0e4d9e"}}