{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2023:7A6OLDYT6RMT6FSOXAB7DHECVP","short_pith_number":"pith:7A6OLDYT","canonical_record":{"source":{"id":"2309.10001","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2023-09-17T09:42:40Z","cross_cats_sorted":[],"title_canon_sha256":"a309cdd3fad7e608833ceea3969de94fdfb1a1528b3f2a9d18a240f3505b32dc","abstract_canon_sha256":"03e2689d8c99eb838ca7c17b29f7e806dec45e4e141f5656096b120ab6cefc67"},"schema_version":"1.0"},"canonical_sha256":"f83ce58f13f4593f164eb803f19c82abd7f1812bd86fab01a55f8056be808991","source":{"kind":"arxiv","id":"2309.10001","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2309.10001","created_at":"2026-07-05T06:51:49Z"},{"alias_kind":"arxiv_version","alias_value":"2309.10001v1","created_at":"2026-07-05T06:51:49Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2309.10001","created_at":"2026-07-05T06:51:49Z"},{"alias_kind":"pith_short_12","alias_value":"7A6OLDYT6RMT","created_at":"2026-07-05T06:51:49Z"},{"alias_kind":"pith_short_16","alias_value":"7A6OLDYT6RMT6FSO","created_at":"2026-07-05T06:51:49Z"},{"alias_kind":"pith_short_8","alias_value":"7A6OLDYT","created_at":"2026-07-05T06:51:49Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2023:7A6OLDYT6RMT6FSOXAB7DHECVP","target":"record","payload":{"canonical_record":{"source":{"id":"2309.10001","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2023-09-17T09:42:40Z","cross_cats_sorted":[],"title_canon_sha256":"a309cdd3fad7e608833ceea3969de94fdfb1a1528b3f2a9d18a240f3505b32dc","abstract_canon_sha256":"03e2689d8c99eb838ca7c17b29f7e806dec45e4e141f5656096b120ab6cefc67"},"schema_version":"1.0"},"canonical_sha256":"f83ce58f13f4593f164eb803f19c82abd7f1812bd86fab01a55f8056be808991","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T06:51:49.635067Z","signature_b64":"kXh4bjn0y80ojLq5puKeI0fOR7LgyM9JQDY0DVb2UFCMoMIUqd6SlNvsF3dnRoK+n6MHSHhMNLeHCSFrSNeqBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"f83ce58f13f4593f164eb803f19c82abd7f1812bd86fab01a55f8056be808991","last_reissued_at":"2026-07-05T06:51:49.634627Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T06:51:49.634627Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2309.10001","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":"2026-07-05T06:51:49Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"3NEWmHO7Q9nf1M8+EskitHMmjOAMZg+Zaipkf3brv+hBfHyvN7kka77QsZGj0Q2Inl5oujjfXiKQRYlC/QhUBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-21T21:55:26.321061Z"},"content_sha256":"5f01333b93b2f6f92d424e87fc057cb26be3a404add46679a79eda58890077f9","schema_version":"1.0","event_id":"sha256:5f01333b93b2f6f92d424e87fc057cb26be3a404add46679a79eda58890077f9"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2023:7A6OLDYT6RMT6FSOXAB7DHECVP","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"CaSAR: Contact-aware Skeletal Action Recognition","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cs.CV","authors_text":"Enjie Cao, Junan Lin, Mahdi Rad, Marc Pollefeys, Taein Kwon, Zhichao Sun","submitted_at":"2023-09-17T09:42:40Z","abstract_excerpt":"Skeletal Action recognition from an egocentric view is important for applications such as interfaces in AR/VR glasses and human-robot interaction, where the device has limited resources. Most of the existing skeletal action recognition approaches use 3D coordinates of hand joints and 8-corner rectangular bounding boxes of objects as inputs, but they do not capture how the hands and objects interact with each other within the spatial context. In this paper, we present a new framework called Contact-aware Skeletal Action Recognition (CaSAR). It uses novel representations of hand-object interacti"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2309.10001","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/2309.10001/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":"2026-07-05T06:51:49Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"bpSzFPeSobLewxr9joMBrYOR0yK5syfKJZ3loBI/Q3HQE1twSU9lw5AeeQgyaeV/ian/Wq1usEd4TcBn9cXBCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-21T21:55:26.321462Z"},"content_sha256":"88d058bd1ad8255b18b4e58d0c5c9ec5a47f4d5133b03fb2215a394d658dd09a","schema_version":"1.0","event_id":"sha256:88d058bd1ad8255b18b4e58d0c5c9ec5a47f4d5133b03fb2215a394d658dd09a"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/7A6OLDYT6RMT6FSOXAB7DHECVP/bundle.json","state_url":"https://pith.science/pith/7A6OLDYT6RMT6FSOXAB7DHECVP/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/7A6OLDYT6RMT6FSOXAB7DHECVP/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":"2026-07-21T21:55:26Z","links":{"resolver":"https://pith.science/pith/7A6OLDYT6RMT6FSOXAB7DHECVP","bundle":"https://pith.science/pith/7A6OLDYT6RMT6FSOXAB7DHECVP/bundle.json","state":"https://pith.science/pith/7A6OLDYT6RMT6FSOXAB7DHECVP/state.json","well_known_bundle":"https://pith.science/.well-known/pith/7A6OLDYT6RMT6FSOXAB7DHECVP/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2023:7A6OLDYT6RMT6FSOXAB7DHECVP","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":"03e2689d8c99eb838ca7c17b29f7e806dec45e4e141f5656096b120ab6cefc67","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2023-09-17T09:42:40Z","title_canon_sha256":"a309cdd3fad7e608833ceea3969de94fdfb1a1528b3f2a9d18a240f3505b32dc"},"schema_version":"1.0","source":{"id":"2309.10001","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2309.10001","created_at":"2026-07-05T06:51:49Z"},{"alias_kind":"arxiv_version","alias_value":"2309.10001v1","created_at":"2026-07-05T06:51:49Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2309.10001","created_at":"2026-07-05T06:51:49Z"},{"alias_kind":"pith_short_12","alias_value":"7A6OLDYT6RMT","created_at":"2026-07-05T06:51:49Z"},{"alias_kind":"pith_short_16","alias_value":"7A6OLDYT6RMT6FSO","created_at":"2026-07-05T06:51:49Z"},{"alias_kind":"pith_short_8","alias_value":"7A6OLDYT","created_at":"2026-07-05T06:51:49Z"}],"graph_snapshots":[{"event_id":"sha256:88d058bd1ad8255b18b4e58d0c5c9ec5a47f4d5133b03fb2215a394d658dd09a","target":"graph","created_at":"2026-07-05T06:51:49Z","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/2309.10001/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Skeletal Action recognition from an egocentric view is important for applications such as interfaces in AR/VR glasses and human-robot interaction, where the device has limited resources. Most of the existing skeletal action recognition approaches use 3D coordinates of hand joints and 8-corner rectangular bounding boxes of objects as inputs, but they do not capture how the hands and objects interact with each other within the spatial context. In this paper, we present a new framework called Contact-aware Skeletal Action Recognition (CaSAR). It uses novel representations of hand-object interacti","authors_text":"Enjie Cao, Junan Lin, Mahdi Rad, Marc Pollefeys, Taein Kwon, Zhichao Sun","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2023-09-17T09:42:40Z","title":"CaSAR: Contact-aware Skeletal Action Recognition"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2309.10001","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":"sha256:5f01333b93b2f6f92d424e87fc057cb26be3a404add46679a79eda58890077f9","target":"record","created_at":"2026-07-05T06:51:49Z","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":"03e2689d8c99eb838ca7c17b29f7e806dec45e4e141f5656096b120ab6cefc67","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2023-09-17T09:42:40Z","title_canon_sha256":"a309cdd3fad7e608833ceea3969de94fdfb1a1528b3f2a9d18a240f3505b32dc"},"schema_version":"1.0","source":{"id":"2309.10001","kind":"arxiv","version":1}},"canonical_sha256":"f83ce58f13f4593f164eb803f19c82abd7f1812bd86fab01a55f8056be808991","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"f83ce58f13f4593f164eb803f19c82abd7f1812bd86fab01a55f8056be808991","first_computed_at":"2026-07-05T06:51:49.634627Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T06:51:49.634627Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"kXh4bjn0y80ojLq5puKeI0fOR7LgyM9JQDY0DVb2UFCMoMIUqd6SlNvsF3dnRoK+n6MHSHhMNLeHCSFrSNeqBw==","signature_status":"signed_v1","signed_at":"2026-07-05T06:51:49.635067Z","signed_message":"canonical_sha256_bytes"},"source_id":"2309.10001","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:5f01333b93b2f6f92d424e87fc057cb26be3a404add46679a79eda58890077f9","sha256:88d058bd1ad8255b18b4e58d0c5c9ec5a47f4d5133b03fb2215a394d658dd09a"],"state_sha256":"d9958b16eb2ef156c2f4407a96369686358cfd63cd2c1add7641f35839e132db"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"H4Tl8OSGyx3QcI6BxKgqhJL2FGaShY9lLlrFF7HcyfYLUjCqhS36Ag44wGA09L5UB2qkO8nsvn/nt7wqEvNdCQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-21T21:55:26.323600Z","bundle_sha256":"3d5f775bd4ed48a7751fe2fac4adb7bfa832f63313540b91e58e7ca3d932ab12"}}