{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2026:4TD2QICWRTP26JQ63PBPYBM3TT","short_pith_number":"pith:4TD2QICW","canonical_record":{"source":{"id":"2607.11221","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","primary_cat":"cs.CV","submitted_at":"2026-07-13T08:13:42Z","cross_cats_sorted":["cs.AI"],"title_canon_sha256":"d2516c9af4a9c0a67b66401b1486d2fa23c5e08b58db4a386f9011c62ae8ef99","abstract_canon_sha256":"6c3e5510494359d4459dc17958c8c20274e635f09acce20bb46c979a3c91a73e"},"schema_version":"1.0"},"canonical_sha256":"e4c7a820568cdfaf261edbc2fc059b9cd2d631463dbf81247559e569147eb94b","source":{"kind":"arxiv","id":"2607.11221","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2607.11221","created_at":"2026-07-14T01:22:23Z"},{"alias_kind":"arxiv_version","alias_value":"2607.11221v1","created_at":"2026-07-14T01:22:23Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2607.11221","created_at":"2026-07-14T01:22:23Z"},{"alias_kind":"pith_short_12","alias_value":"4TD2QICWRTP2","created_at":"2026-07-14T01:22:23Z"},{"alias_kind":"pith_short_16","alias_value":"4TD2QICWRTP26JQ6","created_at":"2026-07-14T01:22:23Z"},{"alias_kind":"pith_short_8","alias_value":"4TD2QICW","created_at":"2026-07-14T01:22:23Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2026:4TD2QICWRTP26JQ63PBPYBM3TT","target":"record","payload":{"canonical_record":{"source":{"id":"2607.11221","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","primary_cat":"cs.CV","submitted_at":"2026-07-13T08:13:42Z","cross_cats_sorted":["cs.AI"],"title_canon_sha256":"d2516c9af4a9c0a67b66401b1486d2fa23c5e08b58db4a386f9011c62ae8ef99","abstract_canon_sha256":"6c3e5510494359d4459dc17958c8c20274e635f09acce20bb46c979a3c91a73e"},"schema_version":"1.0"},"canonical_sha256":"e4c7a820568cdfaf261edbc2fc059b9cd2d631463dbf81247559e569147eb94b","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-14T01:22:23.204859Z","signature_b64":"OUm6qdNFh3NH9xSuMEGc8AustKYsF2r1iqe3NXJExXwi20kfzRv4BWVuhTPnasGjpAAuzFtEPKFg/ZktT+rmCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"e4c7a820568cdfaf261edbc2fc059b9cd2d631463dbf81247559e569147eb94b","last_reissued_at":"2026-07-14T01:22:23.203942Z","signature_status":"signed_v1","first_computed_at":"2026-07-14T01:22:23.203942Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2607.11221","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":"2026-07-14T01:22:23Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"uL7frO+peQD4qrYK6ACapCx0UVC/g1CO9xyavqEqKccCc2GLxe/wBay+Z472AzxfFrheCi/duddZsYHxOfgiDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-07T09:46:06.530090Z"},"content_sha256":"0c2dddece2648618b11c228724d128b8724fc89eb90e7cc8c7aeb4b9af749286","schema_version":"1.0","event_id":"sha256:0c2dddece2648618b11c228724d128b8724fc89eb90e7cc8c7aeb4b9af749286"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2026:4TD2QICWRTP26JQ63PBPYBM3TT","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"HandFlow: Fully Generative 4D Hand Recovery with Flow Matching","license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","headline":"","cross_cats":["cs.AI"],"primary_cat":"cs.CV","authors_text":"Bowen Duan, Mingxi Xu, Renjing Xu, Yi Gu, Yutao Yue, Zhengyang Shen","submitted_at":"2026-07-13T08:13:42Z","abstract_excerpt":"Accurate monocular 4D hand reconstruction remains challenging. Per-frame discriminative regressors lack temporal context and often produce jittery predictions. Temporal models improve consistency by aggregating information across frames, but they are typically deterministic regressors, making them vulnerable to ambiguous observations caused by occlusion and motion blur. Generative modeling offers a natural alternative by learning a prior over plausible hand motion sequences, enabling coherent hand-state recovery when visual evidence is incomplete or unreliable.\n  Motivated by this observation,"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2607.11221","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/2607.11221/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":"2026-07-14T01:22:23Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"jU/MZIhPiN5yopkDkFt6uoOwhadRbZNIdYil22fteHe6qymhgbAXa44ZUFnqrqLjyWVu5SVaNRL6OubJd1UvBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-07T09:46:06.530682Z"},"content_sha256":"beffea2fe964b625b3f4c1bbf4257cc9fc589b5b656329d58364370c1038a847","schema_version":"1.0","event_id":"sha256:beffea2fe964b625b3f4c1bbf4257cc9fc589b5b656329d58364370c1038a847"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/4TD2QICWRTP26JQ63PBPYBM3TT/bundle.json","state_url":"https://pith.science/pith/4TD2QICWRTP26JQ63PBPYBM3TT/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/4TD2QICWRTP26JQ63PBPYBM3TT/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":"2026-08-07T09:46:06Z","links":{"resolver":"https://pith.science/pith/4TD2QICWRTP26JQ63PBPYBM3TT","bundle":"https://pith.science/pith/4TD2QICWRTP26JQ63PBPYBM3TT/bundle.json","state":"https://pith.science/pith/4TD2QICWRTP26JQ63PBPYBM3TT/state.json","well_known_bundle":"https://pith.science/.well-known/pith/4TD2QICWRTP26JQ63PBPYBM3TT/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:4TD2QICWRTP26JQ63PBPYBM3TT","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":"6c3e5510494359d4459dc17958c8c20274e635f09acce20bb46c979a3c91a73e","cross_cats_sorted":["cs.AI"],"license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","primary_cat":"cs.CV","submitted_at":"2026-07-13T08:13:42Z","title_canon_sha256":"d2516c9af4a9c0a67b66401b1486d2fa23c5e08b58db4a386f9011c62ae8ef99"},"schema_version":"1.0","source":{"id":"2607.11221","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2607.11221","created_at":"2026-07-14T01:22:23Z"},{"alias_kind":"arxiv_version","alias_value":"2607.11221v1","created_at":"2026-07-14T01:22:23Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2607.11221","created_at":"2026-07-14T01:22:23Z"},{"alias_kind":"pith_short_12","alias_value":"4TD2QICWRTP2","created_at":"2026-07-14T01:22:23Z"},{"alias_kind":"pith_short_16","alias_value":"4TD2QICWRTP26JQ6","created_at":"2026-07-14T01:22:23Z"},{"alias_kind":"pith_short_8","alias_value":"4TD2QICW","created_at":"2026-07-14T01:22:23Z"}],"graph_snapshots":[{"event_id":"sha256:beffea2fe964b625b3f4c1bbf4257cc9fc589b5b656329d58364370c1038a847","target":"graph","created_at":"2026-07-14T01:22:23Z","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/2607.11221/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Accurate monocular 4D hand reconstruction remains challenging. Per-frame discriminative regressors lack temporal context and often produce jittery predictions. Temporal models improve consistency by aggregating information across frames, but they are typically deterministic regressors, making them vulnerable to ambiguous observations caused by occlusion and motion blur. Generative modeling offers a natural alternative by learning a prior over plausible hand motion sequences, enabling coherent hand-state recovery when visual evidence is incomplete or unreliable.\n  Motivated by this observation,","authors_text":"Bowen Duan, Mingxi Xu, Renjing Xu, Yi Gu, Yutao Yue, Zhengyang Shen","cross_cats":["cs.AI"],"headline":"","license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","primary_cat":"cs.CV","submitted_at":"2026-07-13T08:13:42Z","title":"HandFlow: Fully Generative 4D Hand Recovery with Flow Matching"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2607.11221","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":"sha256:0c2dddece2648618b11c228724d128b8724fc89eb90e7cc8c7aeb4b9af749286","target":"record","created_at":"2026-07-14T01:22:23Z","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":"6c3e5510494359d4459dc17958c8c20274e635f09acce20bb46c979a3c91a73e","cross_cats_sorted":["cs.AI"],"license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","primary_cat":"cs.CV","submitted_at":"2026-07-13T08:13:42Z","title_canon_sha256":"d2516c9af4a9c0a67b66401b1486d2fa23c5e08b58db4a386f9011c62ae8ef99"},"schema_version":"1.0","source":{"id":"2607.11221","kind":"arxiv","version":1}},"canonical_sha256":"e4c7a820568cdfaf261edbc2fc059b9cd2d631463dbf81247559e569147eb94b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"e4c7a820568cdfaf261edbc2fc059b9cd2d631463dbf81247559e569147eb94b","first_computed_at":"2026-07-14T01:22:23.203942Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-14T01:22:23.203942Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"OUm6qdNFh3NH9xSuMEGc8AustKYsF2r1iqe3NXJExXwi20kfzRv4BWVuhTPnasGjpAAuzFtEPKFg/ZktT+rmCg==","signature_status":"signed_v1","signed_at":"2026-07-14T01:22:23.204859Z","signed_message":"canonical_sha256_bytes"},"source_id":"2607.11221","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:0c2dddece2648618b11c228724d128b8724fc89eb90e7cc8c7aeb4b9af749286","sha256:beffea2fe964b625b3f4c1bbf4257cc9fc589b5b656329d58364370c1038a847"],"state_sha256":"55155afd4d4aea8fbf9da0dad97370978d9ace94a4aa0f0a4579ae44ea847337"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"nrkAk0LoWx348GVJx2Ee6osPicKakuTbtpNGfrzxZH284XP7RT21j9v0TchJGMRC1TOKxNYXx5jaGZJMPvuDBA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-07T09:46:06.542161Z","bundle_sha256":"d5dfb884466260135a98f3d08646b2a1e414a6a7d5353a1dca96659c3cad7cb7"}}