{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2026:YVTWVIZVPJAF26GHDJIWJ7MFHY","short_pith_number":"pith:YVTWVIZV","canonical_record":{"source":{"id":"2608.01512","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"eess.SP","submitted_at":"2026-08-02T21:50:30Z","cross_cats_sorted":[],"title_canon_sha256":"1e5f3bb2b9895098a977a4bad3b47666b79f99100cd542b7231d19e22b49ecfe","abstract_canon_sha256":"d59aa18ff278e96aa37a24675c70363d78c3094210258b6a3687a2167acc637b"},"schema_version":"1.0"},"canonical_sha256":"c5676aa3357a405d78c71a5164fd853e1a9ae7005aacff01a1df7b9c37743c1b","source":{"kind":"arxiv","id":"2608.01512","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2608.01512","created_at":"2026-08-04T02:05:47Z"},{"alias_kind":"arxiv_version","alias_value":"2608.01512v1","created_at":"2026-08-04T02:05:47Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2608.01512","created_at":"2026-08-04T02:05:47Z"},{"alias_kind":"pith_short_12","alias_value":"YVTWVIZVPJAF","created_at":"2026-08-04T02:05:47Z"},{"alias_kind":"pith_short_16","alias_value":"YVTWVIZVPJAF26GH","created_at":"2026-08-04T02:05:47Z"},{"alias_kind":"pith_short_8","alias_value":"YVTWVIZV","created_at":"2026-08-04T02:05:47Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2026:YVTWVIZVPJAF26GHDJIWJ7MFHY","target":"record","payload":{"canonical_record":{"source":{"id":"2608.01512","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"eess.SP","submitted_at":"2026-08-02T21:50:30Z","cross_cats_sorted":[],"title_canon_sha256":"1e5f3bb2b9895098a977a4bad3b47666b79f99100cd542b7231d19e22b49ecfe","abstract_canon_sha256":"d59aa18ff278e96aa37a24675c70363d78c3094210258b6a3687a2167acc637b"},"schema_version":"1.0"},"canonical_sha256":"c5676aa3357a405d78c71a5164fd853e1a9ae7005aacff01a1df7b9c37743c1b","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-08-04T02:05:47.358739Z","signature_b64":"4XOXZVN3DJlFohGN7ZeIcW8Voq6VrQorEuId2Fc+/XqMg4RrDYnEju61TWBFmeZPSXVTolQ5VaAIj/2SbRFuCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"c5676aa3357a405d78c71a5164fd853e1a9ae7005aacff01a1df7b9c37743c1b","last_reissued_at":"2026-08-04T02:05:47.357238Z","signature_status":"signed_v1","first_computed_at":"2026-08-04T02:05:47.357238Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2608.01512","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":"2026-08-04T02:05:47Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"HnZY6Ah0QeD/nombQ7hiWeKvi5BJciIFiWtaOzN/2KpugMeoF3N4jz9Tig3zaf/Kn7h0NPZfNpvSF+/dzcF9CQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-12T13:27:05.292618Z"},"content_sha256":"2eee977737501ce047ab900e8690896923362bd94429aad05e757ac6391ab945","schema_version":"1.0","event_id":"sha256:2eee977737501ce047ab900e8690896923362bd94429aad05e757ac6391ab945"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2026:YVTWVIZVPJAF26GHDJIWJ7MFHY","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Binary Contact Sensing for Sitting Posture Recognition Without Pressure Sensors","license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","headline":"","cross_cats":[],"primary_cat":"eess.SP","authors_text":"Abdullah Bin Shams, Khandaker Mashiat Rahman, Orthy Toor, Tonoya Mustafa","submitted_at":"2026-08-02T21:50:30Z","abstract_excerpt":"Prolonged sitting with poor posture results in musculoskeletal injury. Early intervention and prevention methods to monitor posture rely on cameras, wearable devices, and dense pressure arrays. Although effective, these approaches introduce privacy concerns, calibration needs, higher cost, etc. In this paper, we explore the spatial pattern of body contact as a binary posture feature vector for a distinct contact-based sitting posture recognition system without the need for analog signal conditioning and calibration. Our sensing principle uses 10 mechanical contact switches arranged in a 5 x 2 "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2608.01512","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/2608.01512/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":"2026-08-04T02:05:47Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ufbRHbcDX/X9WVy+EGtXsVaVvphTmQ6IWoo68F2l55eq/Fe71NZ87hCXbMZE/d/8LNxGrvX+X0G25h+bxYJMAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-12T13:27:05.293528Z"},"content_sha256":"0ab00b958ff2e92b41a9d14d36675d2b58a97286d73b2672c4c665bb241a9d10","schema_version":"1.0","event_id":"sha256:0ab00b958ff2e92b41a9d14d36675d2b58a97286d73b2672c4c665bb241a9d10"},{"event_type":"integrity_finding","subject_pith_number":"pith:2026:YVTWVIZVPJAF26GHDJIWJ7MFHY","target":"integrity","payload":{"note":"Identifier '10.3390/s24092940.capitalized' is syntactically valid but the DOI registry (doi.org) returned 404, and Crossref / OpenAlex / internal corpus also have no record. The cited work could not be located through any authoritative source.","snippet":"D. F. Odesola, J. Kulon, S. Verghese, A. Partlow, and C. Gibson, “Smart Sensing Chairs for sitting posture Detection, Classification, and monitoring: A Comprehensive review,” Sensors, vol. 24, no. 9, p. 2940, May 2024, doi: 10.3390/s2409294","arxiv_id":"2608.01512","detector":"doi_compliance","evidence":{"doi":"10.3390/s24092940.capitalized","arxiv_id":null,"ref_index":6,"raw_excerpt":"D. F. Odesola, J. Kulon, S. Verghese, A. Partlow, and C. Gibson, “Smart Sensing Chairs for sitting posture Detection, Classification, and monitoring: A Comprehensive review,” Sensors, vol. 24, no. 9, p. 2940, May 2024, doi: 10.3390/s24092940.capitalized,” J. Name Stand. Abbrev., in press","parse_status":"well_formed","verdict_class":"cross_source","checked_sources":["crossref_by_doi","openalex_by_doi","doi_org_head"],"resolution_status":"hard_miss"},"severity":"critical","ref_index":6,"audited_at":"2026-08-06T00:18:56.954850Z","event_type":"pith.integrity.v1","detected_doi":"10.3390/s24092940.capitalized","detector_url":"https://pith.science/pith-integrity-protocol#doi_compliance","external_url":null,"finding_type":"unresolvable_identifier","evidence_hash":"5ad9a9a5dfe67f9eef30be3ed6e6b547608afa3e5b89ddb1502bad916ae39bc3","paper_version":1,"verdict_class":"cross_source","resolved_title":null,"detector_version":"1.1.0","detected_arxiv_id":null,"integrity_event_id":18180,"payload_sha256":"43c3499c81972f4f71a5d4ca45806941ed9b05c59fd9e2f00ab09a607f890feb","signature_b64":"3FSNx/hdSFpB7IHLNvSSuDY0SCfmBJn7HwJ6o+ixzcmjxT02K47qmokKY3rPqiKC6GwzATf968HXS2NZ0FY3Dw==","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":"2026-08-06T00:23:30Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"DdMzxbq9D8sz9aPabk8pk8eX/x4JYOyvAb2EGpYwuK/8VwaK4C2cHCX3hm2MQjy3wKdUz6ysjoaQqmPQR64rCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-12T13:27:05.298625Z"},"content_sha256":"0744cb2ddcc28cb03f703885fbd6600d6c1361fd99960e0804a3b9be0e186d7f","schema_version":"1.0","event_id":"sha256:0744cb2ddcc28cb03f703885fbd6600d6c1361fd99960e0804a3b9be0e186d7f"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/YVTWVIZVPJAF26GHDJIWJ7MFHY/bundle.json","state_url":"https://pith.science/pith/YVTWVIZVPJAF26GHDJIWJ7MFHY/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/YVTWVIZVPJAF26GHDJIWJ7MFHY/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":"2026-08-12T13:27:05Z","links":{"resolver":"https://pith.science/pith/YVTWVIZVPJAF26GHDJIWJ7MFHY","bundle":"https://pith.science/pith/YVTWVIZVPJAF26GHDJIWJ7MFHY/bundle.json","state":"https://pith.science/pith/YVTWVIZVPJAF26GHDJIWJ7MFHY/state.json","well_known_bundle":"https://pith.science/.well-known/pith/YVTWVIZVPJAF26GHDJIWJ7MFHY/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:YVTWVIZVPJAF26GHDJIWJ7MFHY","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":"d59aa18ff278e96aa37a24675c70363d78c3094210258b6a3687a2167acc637b","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"eess.SP","submitted_at":"2026-08-02T21:50:30Z","title_canon_sha256":"1e5f3bb2b9895098a977a4bad3b47666b79f99100cd542b7231d19e22b49ecfe"},"schema_version":"1.0","source":{"id":"2608.01512","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2608.01512","created_at":"2026-08-04T02:05:47Z"},{"alias_kind":"arxiv_version","alias_value":"2608.01512v1","created_at":"2026-08-04T02:05:47Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2608.01512","created_at":"2026-08-04T02:05:47Z"},{"alias_kind":"pith_short_12","alias_value":"YVTWVIZVPJAF","created_at":"2026-08-04T02:05:47Z"},{"alias_kind":"pith_short_16","alias_value":"YVTWVIZVPJAF26GH","created_at":"2026-08-04T02:05:47Z"},{"alias_kind":"pith_short_8","alias_value":"YVTWVIZV","created_at":"2026-08-04T02:05:47Z"}],"graph_snapshots":[{"event_id":"sha256:0ab00b958ff2e92b41a9d14d36675d2b58a97286d73b2672c4c665bb241a9d10","target":"graph","created_at":"2026-08-04T02:05:47Z","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/2608.01512/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Prolonged sitting with poor posture results in musculoskeletal injury. Early intervention and prevention methods to monitor posture rely on cameras, wearable devices, and dense pressure arrays. Although effective, these approaches introduce privacy concerns, calibration needs, higher cost, etc. In this paper, we explore the spatial pattern of body contact as a binary posture feature vector for a distinct contact-based sitting posture recognition system without the need for analog signal conditioning and calibration. Our sensing principle uses 10 mechanical contact switches arranged in a 5 x 2 ","authors_text":"Abdullah Bin Shams, Khandaker Mashiat Rahman, Orthy Toor, Tonoya Mustafa","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"eess.SP","submitted_at":"2026-08-02T21:50:30Z","title":"Binary Contact Sensing for Sitting Posture Recognition Without Pressure Sensors"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2608.01512","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":"sha256:2eee977737501ce047ab900e8690896923362bd94429aad05e757ac6391ab945","target":"record","created_at":"2026-08-04T02:05:47Z","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":"d59aa18ff278e96aa37a24675c70363d78c3094210258b6a3687a2167acc637b","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"eess.SP","submitted_at":"2026-08-02T21:50:30Z","title_canon_sha256":"1e5f3bb2b9895098a977a4bad3b47666b79f99100cd542b7231d19e22b49ecfe"},"schema_version":"1.0","source":{"id":"2608.01512","kind":"arxiv","version":1}},"canonical_sha256":"c5676aa3357a405d78c71a5164fd853e1a9ae7005aacff01a1df7b9c37743c1b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"c5676aa3357a405d78c71a5164fd853e1a9ae7005aacff01a1df7b9c37743c1b","first_computed_at":"2026-08-04T02:05:47.357238Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-08-04T02:05:47.357238Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"4XOXZVN3DJlFohGN7ZeIcW8Voq6VrQorEuId2Fc+/XqMg4RrDYnEju61TWBFmeZPSXVTolQ5VaAIj/2SbRFuCg==","signature_status":"signed_v1","signed_at":"2026-08-04T02:05:47.358739Z","signed_message":"canonical_sha256_bytes"},"source_id":"2608.01512","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:2eee977737501ce047ab900e8690896923362bd94429aad05e757ac6391ab945","sha256:0ab00b958ff2e92b41a9d14d36675d2b58a97286d73b2672c4c665bb241a9d10","sha256:0744cb2ddcc28cb03f703885fbd6600d6c1361fd99960e0804a3b9be0e186d7f"],"state_sha256":"b91035ce13b8327b1fef8aa50c3bcf1e3e218b1d83e25d11f1b581558d5dfb19"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"DmFoX4AebwVepP61Y4VnET82NKFxadNbjL7sXjUfDPKhCwGxZrBxjUQYyjpjAxDnYLjBiHMTBW4d45XoYKOPAw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-12T13:27:05.304268Z","bundle_sha256":"b93918779dcd8225388f6fff038771b8d99baf619e882ef1173788e0755ddc80"}}