{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2026:A3JP3MWFTVDHZDA6DD4A3U4P2T","short_pith_number":"pith:A3JP3MWF","canonical_record":{"source":{"id":"2607.19441","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.HC","submitted_at":"2026-07-21T08:41:03Z","cross_cats_sorted":[],"title_canon_sha256":"7ff8a2c8fd07bbb6898bb57768ed61d953171ebd9b1339a8c7decfcffb6f072f","abstract_canon_sha256":"90754e6eeba6c3cd5acad686533c89aee7e8131ba6eeed7b337b87655c94a881"},"schema_version":"1.0"},"canonical_sha256":"06d2fdb2c59d467c8c1e18f80dd38fd4f50b547032a13ebbc7855166ab3b3ffe","source":{"kind":"arxiv","id":"2607.19441","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2607.19441","created_at":"2026-07-23T00:23:49Z"},{"alias_kind":"arxiv_version","alias_value":"2607.19441v1","created_at":"2026-07-23T00:23:49Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2607.19441","created_at":"2026-07-23T00:23:49Z"},{"alias_kind":"pith_short_12","alias_value":"A3JP3MWFTVDH","created_at":"2026-07-23T00:23:49Z"},{"alias_kind":"pith_short_16","alias_value":"A3JP3MWFTVDHZDA6","created_at":"2026-07-23T00:23:49Z"},{"alias_kind":"pith_short_8","alias_value":"A3JP3MWF","created_at":"2026-07-23T00:23:49Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2026:A3JP3MWFTVDHZDA6DD4A3U4P2T","target":"record","payload":{"canonical_record":{"source":{"id":"2607.19441","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.HC","submitted_at":"2026-07-21T08:41:03Z","cross_cats_sorted":[],"title_canon_sha256":"7ff8a2c8fd07bbb6898bb57768ed61d953171ebd9b1339a8c7decfcffb6f072f","abstract_canon_sha256":"90754e6eeba6c3cd5acad686533c89aee7e8131ba6eeed7b337b87655c94a881"},"schema_version":"1.0"},"canonical_sha256":"06d2fdb2c59d467c8c1e18f80dd38fd4f50b547032a13ebbc7855166ab3b3ffe","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-23T00:23:49.988710Z","signature_b64":"xvejawuF1KWLsfmnMZX541gYDtqQeHatkdIBDwFyqIPm0reZurJ0JBcFBn86NhEkoXCxicV3pTGMF4tjlKeBDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"06d2fdb2c59d467c8c1e18f80dd38fd4f50b547032a13ebbc7855166ab3b3ffe","last_reissued_at":"2026-07-23T00:23:49.987844Z","signature_status":"signed_v1","first_computed_at":"2026-07-23T00:23:49.987844Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2607.19441","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":"2026-07-23T00:23:49Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"qM08Oik5oSZNj4dCTGkT35b95aqekW6a6T+mn8XlLwz/hfvbGalxFaQDBBVpOwP76DqpUVEO9WgiJjZe3273Cg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-04T11:17:18.348835Z"},"content_sha256":"a422339be43fab3cdb89d40365613799b48cb46ab1a31ee8802799e8cb3fc258","schema_version":"1.0","event_id":"sha256:a422339be43fab3cdb89d40365613799b48cb46ab1a31ee8802799e8cb3fc258"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2026:A3JP3MWFTVDHZDA6DD4A3U4P2T","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"How Far Can Wearable-Compatible Signals Go? A Controlled Decomposition of Non-EEG Sleep Staging","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cs.HC","authors_text":"Yi Wang","submitted_at":"2026-07-21T08:41:03Z","abstract_excerpt":"Consumer wearables increasingly infer sleep stages from signals including heart rate, accelerometry, and photoplethysmography. However, existing studies often report end-to-end performance under a fixed signal setting, making it difficult to determine whether the observed performance comes from genuine physiological decoding, temporal priors, or dataset-specific confounds. To address this limitation, we introduce a four-layer controlled decomposition framework for non-EEG sleep staging, covering signal source, physiological representation, temporal prior, and decision layers. The framework is "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2607.19441","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/2607.19441/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":"2026-07-23T00:23:49Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"6TPvWB8g+mDs+MKjHV0AIdDRi5wg/qjl+yMnLMchS2JtpLuj7iaxiJhrrDEps6+Oz9K4EOj+IkSe0XJl8iK9AA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-04T11:17:18.349334Z"},"content_sha256":"fc4684e3d7dd305a4007276cf9a19b298dd7f77155f288cc3f8a027790cebed4","schema_version":"1.0","event_id":"sha256:fc4684e3d7dd305a4007276cf9a19b298dd7f77155f288cc3f8a027790cebed4"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/A3JP3MWFTVDHZDA6DD4A3U4P2T/bundle.json","state_url":"https://pith.science/pith/A3JP3MWFTVDHZDA6DD4A3U4P2T/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/A3JP3MWFTVDHZDA6DD4A3U4P2T/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":"2026-08-04T11:17:18Z","links":{"resolver":"https://pith.science/pith/A3JP3MWFTVDHZDA6DD4A3U4P2T","bundle":"https://pith.science/pith/A3JP3MWFTVDHZDA6DD4A3U4P2T/bundle.json","state":"https://pith.science/pith/A3JP3MWFTVDHZDA6DD4A3U4P2T/state.json","well_known_bundle":"https://pith.science/.well-known/pith/A3JP3MWFTVDHZDA6DD4A3U4P2T/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:A3JP3MWFTVDHZDA6DD4A3U4P2T","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":"90754e6eeba6c3cd5acad686533c89aee7e8131ba6eeed7b337b87655c94a881","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.HC","submitted_at":"2026-07-21T08:41:03Z","title_canon_sha256":"7ff8a2c8fd07bbb6898bb57768ed61d953171ebd9b1339a8c7decfcffb6f072f"},"schema_version":"1.0","source":{"id":"2607.19441","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2607.19441","created_at":"2026-07-23T00:23:49Z"},{"alias_kind":"arxiv_version","alias_value":"2607.19441v1","created_at":"2026-07-23T00:23:49Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2607.19441","created_at":"2026-07-23T00:23:49Z"},{"alias_kind":"pith_short_12","alias_value":"A3JP3MWFTVDH","created_at":"2026-07-23T00:23:49Z"},{"alias_kind":"pith_short_16","alias_value":"A3JP3MWFTVDHZDA6","created_at":"2026-07-23T00:23:49Z"},{"alias_kind":"pith_short_8","alias_value":"A3JP3MWF","created_at":"2026-07-23T00:23:49Z"}],"graph_snapshots":[{"event_id":"sha256:fc4684e3d7dd305a4007276cf9a19b298dd7f77155f288cc3f8a027790cebed4","target":"graph","created_at":"2026-07-23T00:23:49Z","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/2607.19441/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Consumer wearables increasingly infer sleep stages from signals including heart rate, accelerometry, and photoplethysmography. However, existing studies often report end-to-end performance under a fixed signal setting, making it difficult to determine whether the observed performance comes from genuine physiological decoding, temporal priors, or dataset-specific confounds. To address this limitation, we introduce a four-layer controlled decomposition framework for non-EEG sleep staging, covering signal source, physiological representation, temporal prior, and decision layers. The framework is ","authors_text":"Yi Wang","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.HC","submitted_at":"2026-07-21T08:41:03Z","title":"How Far Can Wearable-Compatible Signals Go? A Controlled Decomposition of Non-EEG Sleep Staging"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2607.19441","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:a422339be43fab3cdb89d40365613799b48cb46ab1a31ee8802799e8cb3fc258","target":"record","created_at":"2026-07-23T00:23:49Z","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":"90754e6eeba6c3cd5acad686533c89aee7e8131ba6eeed7b337b87655c94a881","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.HC","submitted_at":"2026-07-21T08:41:03Z","title_canon_sha256":"7ff8a2c8fd07bbb6898bb57768ed61d953171ebd9b1339a8c7decfcffb6f072f"},"schema_version":"1.0","source":{"id":"2607.19441","kind":"arxiv","version":1}},"canonical_sha256":"06d2fdb2c59d467c8c1e18f80dd38fd4f50b547032a13ebbc7855166ab3b3ffe","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"06d2fdb2c59d467c8c1e18f80dd38fd4f50b547032a13ebbc7855166ab3b3ffe","first_computed_at":"2026-07-23T00:23:49.987844Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-23T00:23:49.987844Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"xvejawuF1KWLsfmnMZX541gYDtqQeHatkdIBDwFyqIPm0reZurJ0JBcFBn86NhEkoXCxicV3pTGMF4tjlKeBDA==","signature_status":"signed_v1","signed_at":"2026-07-23T00:23:49.988710Z","signed_message":"canonical_sha256_bytes"},"source_id":"2607.19441","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:a422339be43fab3cdb89d40365613799b48cb46ab1a31ee8802799e8cb3fc258","sha256:fc4684e3d7dd305a4007276cf9a19b298dd7f77155f288cc3f8a027790cebed4"],"state_sha256":"bbf91799eb46c58b330c2cb95279d849efc3afee5cfadd1a1659f0fb426fafb8"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"OWOlgIl56lia0S4bAxx8kiUlgHZYN1FhWvtPrhm6NIbSDpBiVBpSB6FVuGt+g5zddme0PHKk5Wo71t4hKKOOAw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-04T11:17:18.353277Z","bundle_sha256":"b05fc5abe760d6cb92ea52e7f7104c827398c7ded0b9e3874fef152dd0eaa5f1"}}