{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2026:YRXDA3ITTH5TS6LNWJGELYNII5","short_pith_number":"pith:YRXDA3IT","schema_version":"1.0","canonical_sha256":"c46e306d1399fb39796db24c45e1a8474b80a2f1947063a143ca021b19aa47ee","source":{"kind":"arxiv","id":"2605.18553","version":1},"attestation_state":"computed","paper":{"title":"StableHand: Quality-Aware Flow Matching for World-Space Dual-Hand Motion Estimation from Egocentric Video","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["cs.AI"],"primary_cat":"cs.CV","authors_text":"Chaohua Yao, Huajian Zeng, Jiaqi Yang, Rolandos Alexandros Potamias, Xingxing Zuo, Yuantai Zhang","submitted_at":"2026-05-18T15:33:15Z","abstract_excerpt":"Recovering world space 4D motion of two interacting hands from egocentric video is a fundamental capability for supervising robot policy learning, where wrist trajectories track the end-effector and finger articulations specify the grasp pose. Two major challenges arise in this setting: hands frequently leave the camera view for extended periods due to head motion, and persistent hand-object interactions cause severe occlusions of one or both hands. Existing methods uniformly condition on noisy hand motion observations without accounting for their per-frame reliability, leading to substantial "},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"2605.18553","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.CV","submitted_at":"2026-05-18T15:33:15Z","cross_cats_sorted":["cs.AI"],"title_canon_sha256":"731b327b791958e8f00c506143bb9fe9c3a589b4e2e705faeec57af44175a2a7","abstract_canon_sha256":"974a657ecea65a91799112364fd6801e0972d4b69bd4513e80a254fd57fce645"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-20T00:06:07.426227Z","signature_b64":"CFpQNuQCVrnBBm7qWwGWhVamIi/MoeSMkiPIELTCJhyERQWmLmGZ0YDsbtEGwJB9htjWuHITzOrvE6WZ46yMAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"c46e306d1399fb39796db24c45e1a8474b80a2f1947063a143ca021b19aa47ee","last_reissued_at":"2026-05-20T00:06:07.425326Z","signature_status":"signed_v1","first_computed_at":"2026-05-20T00:06:07.425326Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"StableHand: Quality-Aware Flow Matching for World-Space Dual-Hand Motion Estimation from Egocentric Video","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["cs.AI"],"primary_cat":"cs.CV","authors_text":"Chaohua Yao, Huajian Zeng, Jiaqi Yang, Rolandos Alexandros Potamias, Xingxing Zuo, Yuantai Zhang","submitted_at":"2026-05-18T15:33:15Z","abstract_excerpt":"Recovering world space 4D motion of two interacting hands from egocentric video is a fundamental capability for supervising robot policy learning, where wrist trajectories track the end-effector and finger articulations specify the grasp pose. Two major challenges arise in this setting: hands frequently leave the camera view for extended periods due to head motion, and persistent hand-object interactions cause severe occlusions of one or both hands. Existing methods uniformly condition on noisy hand motion observations without accounting for their per-frame reliability, leading to substantial "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2605.18553","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/2605.18553/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"},"aliases":[{"alias_kind":"arxiv","alias_value":"2605.18553","created_at":"2026-05-20T00:06:07.425500+00:00"},{"alias_kind":"arxiv_version","alias_value":"2605.18553v1","created_at":"2026-05-20T00:06:07.425500+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2605.18553","created_at":"2026-05-20T00:06:07.425500+00:00"},{"alias_kind":"pith_short_12","alias_value":"YRXDA3ITTH5T","created_at":"2026-05-20T00:06:07.425500+00:00"},{"alias_kind":"pith_short_16","alias_value":"YRXDA3ITTH5TS6LN","created_at":"2026-05-20T00:06:07.425500+00:00"},{"alias_kind":"pith_short_8","alias_value":"YRXDA3IT","created_at":"2026-05-20T00:06:07.425500+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/YRXDA3ITTH5TS6LNWJGELYNII5","json":"https://pith.science/pith/YRXDA3ITTH5TS6LNWJGELYNII5.json","graph_json":"https://pith.science/api/pith-number/YRXDA3ITTH5TS6LNWJGELYNII5/graph.json","events_json":"https://pith.science/api/pith-number/YRXDA3ITTH5TS6LNWJGELYNII5/events.json","paper":"https://pith.science/paper/YRXDA3IT"},"agent_actions":{"view_html":"https://pith.science/pith/YRXDA3ITTH5TS6LNWJGELYNII5","download_json":"https://pith.science/pith/YRXDA3ITTH5TS6LNWJGELYNII5.json","view_paper":"https://pith.science/paper/YRXDA3IT","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2605.18553&json=true","fetch_graph":"https://pith.science/api/pith-number/YRXDA3ITTH5TS6LNWJGELYNII5/graph.json","fetch_events":"https://pith.science/api/pith-number/YRXDA3ITTH5TS6LNWJGELYNII5/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/YRXDA3ITTH5TS6LNWJGELYNII5/action/timestamp_anchor","attest_storage":"https://pith.science/pith/YRXDA3ITTH5TS6LNWJGELYNII5/action/storage_attestation","attest_author":"https://pith.science/pith/YRXDA3ITTH5TS6LNWJGELYNII5/action/author_attestation","sign_citation":"https://pith.science/pith/YRXDA3ITTH5TS6LNWJGELYNII5/action/citation_signature","submit_replication":"https://pith.science/pith/YRXDA3ITTH5TS6LNWJGELYNII5/action/replication_record"}},"created_at":"2026-05-20T00:06:07.425500+00:00","updated_at":"2026-05-20T00:06:07.425500+00:00"}