{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2025:KENT6RJU2XPRDVRNBZIAOE7L3Y","short_pith_number":"pith:KENT6RJU","canonical_record":{"source":{"id":"2509.04118","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.IV","submitted_at":"2025-09-04T11:31:12Z","cross_cats_sorted":["cs.AI"],"title_canon_sha256":"00d36e5b7efbd15f3c5ca7b3188ecf0b5fea481615782ff3cf74f8f0c1da2b60","abstract_canon_sha256":"e92cc50a5dea1bad1e5d53c2d735ac2928cd63501e5a70aff2a6584ecfc14522"},"schema_version":"1.0"},"canonical_sha256":"511b3f4534d5df11d62d0e500713ebde0a4595be5f16a354911d7d561ca56218","source":{"kind":"arxiv","id":"2509.04118","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2509.04118","created_at":"2026-07-05T12:04:53Z"},{"alias_kind":"arxiv_version","alias_value":"2509.04118v1","created_at":"2026-07-05T12:04:53Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2509.04118","created_at":"2026-07-05T12:04:53Z"},{"alias_kind":"pith_short_12","alias_value":"KENT6RJU2XPR","created_at":"2026-07-05T12:04:53Z"},{"alias_kind":"pith_short_16","alias_value":"KENT6RJU2XPRDVRN","created_at":"2026-07-05T12:04:53Z"},{"alias_kind":"pith_short_8","alias_value":"KENT6RJU","created_at":"2026-07-05T12:04:53Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2025:KENT6RJU2XPRDVRNBZIAOE7L3Y","target":"record","payload":{"canonical_record":{"source":{"id":"2509.04118","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.IV","submitted_at":"2025-09-04T11:31:12Z","cross_cats_sorted":["cs.AI"],"title_canon_sha256":"00d36e5b7efbd15f3c5ca7b3188ecf0b5fea481615782ff3cf74f8f0c1da2b60","abstract_canon_sha256":"e92cc50a5dea1bad1e5d53c2d735ac2928cd63501e5a70aff2a6584ecfc14522"},"schema_version":"1.0"},"canonical_sha256":"511b3f4534d5df11d62d0e500713ebde0a4595be5f16a354911d7d561ca56218","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T12:04:53.755641Z","signature_b64":"6ren7QjR34FzlBJAkAYD3dP61lf+UWRhGOvHOWez8CY52t4em8KF1fYGAHUd+3dhgfSiRPOy4L2xASaqJH43Bw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"511b3f4534d5df11d62d0e500713ebde0a4595be5f16a354911d7d561ca56218","last_reissued_at":"2026-07-05T12:04:53.755200Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T12:04:53.755200Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2509.04118","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":"2026-07-05T12:04:53Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Hb4KUyyU2sUJiBucIYOUWgXHcXnsgl+7rmXk2/uxoFBccAiNJ3ZUiL7rGnPDlA+ACLpXc4LZSVGpN7LXC9lZBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-08T11:20:49.980809Z"},"content_sha256":"c41986e8ffb05ee28972ebbbeea6cab8b90a2d467f38d0083257a1e461c53773","schema_version":"1.0","event_id":"sha256:c41986e8ffb05ee28972ebbbeea6cab8b90a2d467f38d0083257a1e461c53773"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2025:KENT6RJU2XPRDVRNBZIAOE7L3Y","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"EHVC: Efficient Hierarchical Reference and Quality Structure for Neural Video Coding","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cs.AI"],"primary_cat":"eess.IV","authors_text":"Chaoyi Lin, Dong Liu, Junqi Liao, Li Li, Xiaoyan Sun, Yaojun Wu, Zhipin Deng","submitted_at":"2025-09-04T11:31:12Z","abstract_excerpt":"Neural video codecs (NVCs), leveraging the power of end-to-end learning, have demonstrated remarkable coding efficiency improvements over traditional video codecs. Recent research has begun to pay attention to the quality structures in NVCs, optimizing them by introducing explicit hierarchical designs. However, less attention has been paid to the reference structure design, which fundamentally should be aligned with the hierarchical quality structure. In addition, there is still significant room for further optimization of the hierarchical quality structure. To address these challenges in NVCs"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2509.04118","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/2509.04118/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":"2026-07-05T12:04:53Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"TnCwX8bsDD9KO95YxvxF1/npcluQG3Uf3dz/DsBA5LzlVUm3QxLNrzTT6LpBmvOrwIccGhqYbfYNRMbU4bFQAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-08T11:20:49.981406Z"},"content_sha256":"0fcb3a887fb9b73eb845316a43bb7161430d79a49246140b4cde0718281d4058","schema_version":"1.0","event_id":"sha256:0fcb3a887fb9b73eb845316a43bb7161430d79a49246140b4cde0718281d4058"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/KENT6RJU2XPRDVRNBZIAOE7L3Y/bundle.json","state_url":"https://pith.science/pith/KENT6RJU2XPRDVRNBZIAOE7L3Y/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/KENT6RJU2XPRDVRNBZIAOE7L3Y/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":"2026-08-08T11:20:49Z","links":{"resolver":"https://pith.science/pith/KENT6RJU2XPRDVRNBZIAOE7L3Y","bundle":"https://pith.science/pith/KENT6RJU2XPRDVRNBZIAOE7L3Y/bundle.json","state":"https://pith.science/pith/KENT6RJU2XPRDVRNBZIAOE7L3Y/state.json","well_known_bundle":"https://pith.science/.well-known/pith/KENT6RJU2XPRDVRNBZIAOE7L3Y/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2025:KENT6RJU2XPRDVRNBZIAOE7L3Y","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":"e92cc50a5dea1bad1e5d53c2d735ac2928cd63501e5a70aff2a6584ecfc14522","cross_cats_sorted":["cs.AI"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.IV","submitted_at":"2025-09-04T11:31:12Z","title_canon_sha256":"00d36e5b7efbd15f3c5ca7b3188ecf0b5fea481615782ff3cf74f8f0c1da2b60"},"schema_version":"1.0","source":{"id":"2509.04118","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2509.04118","created_at":"2026-07-05T12:04:53Z"},{"alias_kind":"arxiv_version","alias_value":"2509.04118v1","created_at":"2026-07-05T12:04:53Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2509.04118","created_at":"2026-07-05T12:04:53Z"},{"alias_kind":"pith_short_12","alias_value":"KENT6RJU2XPR","created_at":"2026-07-05T12:04:53Z"},{"alias_kind":"pith_short_16","alias_value":"KENT6RJU2XPRDVRN","created_at":"2026-07-05T12:04:53Z"},{"alias_kind":"pith_short_8","alias_value":"KENT6RJU","created_at":"2026-07-05T12:04:53Z"}],"graph_snapshots":[{"event_id":"sha256:0fcb3a887fb9b73eb845316a43bb7161430d79a49246140b4cde0718281d4058","target":"graph","created_at":"2026-07-05T12:04:53Z","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/2509.04118/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Neural video codecs (NVCs), leveraging the power of end-to-end learning, have demonstrated remarkable coding efficiency improvements over traditional video codecs. Recent research has begun to pay attention to the quality structures in NVCs, optimizing them by introducing explicit hierarchical designs. However, less attention has been paid to the reference structure design, which fundamentally should be aligned with the hierarchical quality structure. In addition, there is still significant room for further optimization of the hierarchical quality structure. To address these challenges in NVCs","authors_text":"Chaoyi Lin, Dong Liu, Junqi Liao, Li Li, Xiaoyan Sun, Yaojun Wu, Zhipin Deng","cross_cats":["cs.AI"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.IV","submitted_at":"2025-09-04T11:31:12Z","title":"EHVC: Efficient Hierarchical Reference and Quality Structure for Neural Video Coding"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2509.04118","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:c41986e8ffb05ee28972ebbbeea6cab8b90a2d467f38d0083257a1e461c53773","target":"record","created_at":"2026-07-05T12:04:53Z","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":"e92cc50a5dea1bad1e5d53c2d735ac2928cd63501e5a70aff2a6584ecfc14522","cross_cats_sorted":["cs.AI"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.IV","submitted_at":"2025-09-04T11:31:12Z","title_canon_sha256":"00d36e5b7efbd15f3c5ca7b3188ecf0b5fea481615782ff3cf74f8f0c1da2b60"},"schema_version":"1.0","source":{"id":"2509.04118","kind":"arxiv","version":1}},"canonical_sha256":"511b3f4534d5df11d62d0e500713ebde0a4595be5f16a354911d7d561ca56218","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"511b3f4534d5df11d62d0e500713ebde0a4595be5f16a354911d7d561ca56218","first_computed_at":"2026-07-05T12:04:53.755200Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T12:04:53.755200Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"6ren7QjR34FzlBJAkAYD3dP61lf+UWRhGOvHOWez8CY52t4em8KF1fYGAHUd+3dhgfSiRPOy4L2xASaqJH43Bw==","signature_status":"signed_v1","signed_at":"2026-07-05T12:04:53.755641Z","signed_message":"canonical_sha256_bytes"},"source_id":"2509.04118","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:c41986e8ffb05ee28972ebbbeea6cab8b90a2d467f38d0083257a1e461c53773","sha256:0fcb3a887fb9b73eb845316a43bb7161430d79a49246140b4cde0718281d4058"],"state_sha256":"82a8ca411ae9c96410c27c51cc88f5818672d33158dbf4b1b287926fedca4b10"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"UyJQ/zoVt7yvacUy7wXAquOh9ylEl5Zwn5RlKLBLS8HY408zZrHDJN6Tf9gPVsPzBZiKUqq59YD8fVRC/Ey2Aw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-08T11:20:49.986348Z","bundle_sha256":"b2662149e4d0e3c9376d47b7435f10c6796a0cb1a95292648aa7ad3f89b407be"}}