{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2023:R3AMLXK7AK2KJ4BICHDJ6GTWQV","short_pith_number":"pith:R3AMLXK7","canonical_record":{"source":{"id":"2303.05703","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2023-03-10T05:06:30Z","cross_cats_sorted":["cs.GR"],"title_canon_sha256":"3b82e44f26356a252dc5ade1a72cd7e633997f0ce7193b946dac9d287df2b7e2","abstract_canon_sha256":"447da20e535aac75c147b6a8d4af810db9c035efd3a3633e9f5a86d93a3a60f5"},"schema_version":"1.0"},"canonical_sha256":"8ec0c5dd5f02b4a4f02811c69f1a768550ee35057e253cfc3ef973ef2e1fc410","source":{"kind":"arxiv","id":"2303.05703","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2303.05703","created_at":"2026-07-05T05:58:53Z"},{"alias_kind":"arxiv_version","alias_value":"2303.05703v2","created_at":"2026-07-05T05:58:53Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2303.05703","created_at":"2026-07-05T05:58:53Z"},{"alias_kind":"pith_short_12","alias_value":"R3AMLXK7AK2K","created_at":"2026-07-05T05:58:53Z"},{"alias_kind":"pith_short_16","alias_value":"R3AMLXK7AK2KJ4BI","created_at":"2026-07-05T05:58:53Z"},{"alias_kind":"pith_short_8","alias_value":"R3AMLXK7","created_at":"2026-07-05T05:58:53Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2023:R3AMLXK7AK2KJ4BICHDJ6GTWQV","target":"record","payload":{"canonical_record":{"source":{"id":"2303.05703","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2023-03-10T05:06:30Z","cross_cats_sorted":["cs.GR"],"title_canon_sha256":"3b82e44f26356a252dc5ade1a72cd7e633997f0ce7193b946dac9d287df2b7e2","abstract_canon_sha256":"447da20e535aac75c147b6a8d4af810db9c035efd3a3633e9f5a86d93a3a60f5"},"schema_version":"1.0"},"canonical_sha256":"8ec0c5dd5f02b4a4f02811c69f1a768550ee35057e253cfc3ef973ef2e1fc410","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T05:58:53.581917Z","signature_b64":"PdYC8Bx3EFu4NLTyYQsjr3OA1Hn65lH1ZUbsgD588+GA1LMyWQ2xv7PJ5Hep8rZzPDvOVIibgz88NC9xePJ9AQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"8ec0c5dd5f02b4a4f02811c69f1a768550ee35057e253cfc3ef973ef2e1fc410","last_reissued_at":"2026-07-05T05:58:53.581526Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T05:58:53.581526Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2303.05703","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T05:58:53Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"lUuBpp1AuzjGd8EE2Oj0bsHG13AMxmCVddEk7pbDqnnjDKE+8XYAUomOzUUdJCVck2LU5eB2eKty/T8kSF1UBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-05T12:57:34.080680Z"},"content_sha256":"bc4208ef9b4f2de8ce430c79fc88b9aa43ae31088bef895326cfa4efc9bd0179","schema_version":"1.0","event_id":"sha256:bc4208ef9b4f2de8ce430c79fc88b9aa43ae31088bef895326cfa4efc9bd0179"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2023:R3AMLXK7AK2KJ4BICHDJ6GTWQV","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"MovingParts: Motion-based 3D Part Discovery in Dynamic Radiance Field","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cs.GR"],"primary_cat":"cs.CV","authors_text":"Hao Su, Kaizhi Yang, Xiaoshuai Zhang, Xuejin Chen, Zexiang Xu, Zhiao Huang","submitted_at":"2023-03-10T05:06:30Z","abstract_excerpt":"We present MovingParts, a NeRF-based method for dynamic scene reconstruction and part discovery. We consider motion as an important cue for identifying parts, that all particles on the same part share the common motion pattern. From the perspective of fluid simulation, existing deformation-based methods for dynamic NeRF can be seen as parameterizing the scene motion under the Eulerian view, i.e., focusing on specific locations in space through which the fluid flows as time passes. However, it is intractable to extract the motion of constituting objects or parts using the Eulerian view represen"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2303.05703","kind":"arxiv","version":2},"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/2303.05703/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":"2026-07-05T05:58:53Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"oOcd7uFJZp/Yt3jjNZSUPmZxx88ablt9Dpyk7K1N6ciJuAuTRgvS/4OQblQo8+nx1opH2RT12ddH9q7mLHFoBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-05T12:57:34.081305Z"},"content_sha256":"78d320501630e4062dab81da0c03003620a79667621420844e5ce2158dab260d","schema_version":"1.0","event_id":"sha256:78d320501630e4062dab81da0c03003620a79667621420844e5ce2158dab260d"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/R3AMLXK7AK2KJ4BICHDJ6GTWQV/bundle.json","state_url":"https://pith.science/pith/R3AMLXK7AK2KJ4BICHDJ6GTWQV/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/R3AMLXK7AK2KJ4BICHDJ6GTWQV/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":"2026-07-05T12:57:34Z","links":{"resolver":"https://pith.science/pith/R3AMLXK7AK2KJ4BICHDJ6GTWQV","bundle":"https://pith.science/pith/R3AMLXK7AK2KJ4BICHDJ6GTWQV/bundle.json","state":"https://pith.science/pith/R3AMLXK7AK2KJ4BICHDJ6GTWQV/state.json","well_known_bundle":"https://pith.science/.well-known/pith/R3AMLXK7AK2KJ4BICHDJ6GTWQV/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2023:R3AMLXK7AK2KJ4BICHDJ6GTWQV","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":"447da20e535aac75c147b6a8d4af810db9c035efd3a3633e9f5a86d93a3a60f5","cross_cats_sorted":["cs.GR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2023-03-10T05:06:30Z","title_canon_sha256":"3b82e44f26356a252dc5ade1a72cd7e633997f0ce7193b946dac9d287df2b7e2"},"schema_version":"1.0","source":{"id":"2303.05703","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2303.05703","created_at":"2026-07-05T05:58:53Z"},{"alias_kind":"arxiv_version","alias_value":"2303.05703v2","created_at":"2026-07-05T05:58:53Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2303.05703","created_at":"2026-07-05T05:58:53Z"},{"alias_kind":"pith_short_12","alias_value":"R3AMLXK7AK2K","created_at":"2026-07-05T05:58:53Z"},{"alias_kind":"pith_short_16","alias_value":"R3AMLXK7AK2KJ4BI","created_at":"2026-07-05T05:58:53Z"},{"alias_kind":"pith_short_8","alias_value":"R3AMLXK7","created_at":"2026-07-05T05:58:53Z"}],"graph_snapshots":[{"event_id":"sha256:78d320501630e4062dab81da0c03003620a79667621420844e5ce2158dab260d","target":"graph","created_at":"2026-07-05T05:58:53Z","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/2303.05703/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We present MovingParts, a NeRF-based method for dynamic scene reconstruction and part discovery. We consider motion as an important cue for identifying parts, that all particles on the same part share the common motion pattern. From the perspective of fluid simulation, existing deformation-based methods for dynamic NeRF can be seen as parameterizing the scene motion under the Eulerian view, i.e., focusing on specific locations in space through which the fluid flows as time passes. However, it is intractable to extract the motion of constituting objects or parts using the Eulerian view represen","authors_text":"Hao Su, Kaizhi Yang, Xiaoshuai Zhang, Xuejin Chen, Zexiang Xu, Zhiao Huang","cross_cats":["cs.GR"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2023-03-10T05:06:30Z","title":"MovingParts: Motion-based 3D Part Discovery in Dynamic Radiance Field"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2303.05703","kind":"arxiv","version":2},"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:bc4208ef9b4f2de8ce430c79fc88b9aa43ae31088bef895326cfa4efc9bd0179","target":"record","created_at":"2026-07-05T05:58:53Z","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":"447da20e535aac75c147b6a8d4af810db9c035efd3a3633e9f5a86d93a3a60f5","cross_cats_sorted":["cs.GR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2023-03-10T05:06:30Z","title_canon_sha256":"3b82e44f26356a252dc5ade1a72cd7e633997f0ce7193b946dac9d287df2b7e2"},"schema_version":"1.0","source":{"id":"2303.05703","kind":"arxiv","version":2}},"canonical_sha256":"8ec0c5dd5f02b4a4f02811c69f1a768550ee35057e253cfc3ef973ef2e1fc410","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"8ec0c5dd5f02b4a4f02811c69f1a768550ee35057e253cfc3ef973ef2e1fc410","first_computed_at":"2026-07-05T05:58:53.581526Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T05:58:53.581526Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"PdYC8Bx3EFu4NLTyYQsjr3OA1Hn65lH1ZUbsgD588+GA1LMyWQ2xv7PJ5Hep8rZzPDvOVIibgz88NC9xePJ9AQ==","signature_status":"signed_v1","signed_at":"2026-07-05T05:58:53.581917Z","signed_message":"canonical_sha256_bytes"},"source_id":"2303.05703","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:bc4208ef9b4f2de8ce430c79fc88b9aa43ae31088bef895326cfa4efc9bd0179","sha256:78d320501630e4062dab81da0c03003620a79667621420844e5ce2158dab260d"],"state_sha256":"2bd1e9b4a33ba56b3460fe106708f0f49dc2d27535ae5cd8a5c5d6ea94494acd"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"SDXSZ9se8Vkb2hJl79b5MzT2zKi++562m6HPowM55nPTSlXnGYm7ViUGiArWiZtkIBPTGAyVmtpBYwyp6sY8CA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-05T12:57:34.084837Z","bundle_sha256":"7747c60d579978791c2881e50b58fc6972f76692977a3a7e5e14605b930e1ea1"}}