{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2026:OVVGBTUGBGUZGHQYVR5TBYUA3Q","short_pith_number":"pith:OVVGBTUG","canonical_record":{"source":{"id":"2608.03021","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.SD","submitted_at":"2026-08-04T02:06:46Z","cross_cats_sorted":[],"title_canon_sha256":"a7b9a78d071e31e56389d79f4a2f506642ad57ec4998f0763d7d37e1af6e70e0","abstract_canon_sha256":"9040f36f269f0f2bf6b41a088310bbc7290e02f4d9971003a64702e171c73ee8"},"schema_version":"1.0"},"canonical_sha256":"756a60ce8609a9931e18ac7b30e280dc3051bca322cb0dcbb62e121a3fe17608","source":{"kind":"arxiv","id":"2608.03021","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2608.03021","created_at":"2026-08-05T00:44:37Z"},{"alias_kind":"arxiv_version","alias_value":"2608.03021v1","created_at":"2026-08-05T00:44:37Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2608.03021","created_at":"2026-08-05T00:44:37Z"},{"alias_kind":"pith_short_12","alias_value":"OVVGBTUGBGUZ","created_at":"2026-08-05T00:44:37Z"},{"alias_kind":"pith_short_16","alias_value":"OVVGBTUGBGUZGHQY","created_at":"2026-08-05T00:44:37Z"},{"alias_kind":"pith_short_8","alias_value":"OVVGBTUG","created_at":"2026-08-05T00:44:37Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2026:OVVGBTUGBGUZGHQYVR5TBYUA3Q","target":"record","payload":{"canonical_record":{"source":{"id":"2608.03021","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.SD","submitted_at":"2026-08-04T02:06:46Z","cross_cats_sorted":[],"title_canon_sha256":"a7b9a78d071e31e56389d79f4a2f506642ad57ec4998f0763d7d37e1af6e70e0","abstract_canon_sha256":"9040f36f269f0f2bf6b41a088310bbc7290e02f4d9971003a64702e171c73ee8"},"schema_version":"1.0"},"canonical_sha256":"756a60ce8609a9931e18ac7b30e280dc3051bca322cb0dcbb62e121a3fe17608","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-08-05T00:44:37.739840Z","signature_b64":"E9kP+P5ri5nY1oJMwVbGsyG1FBzK5EGGFNh34Gumi7pJwptMWzBx6Cp0I0CAIX83YUyu2hLvybUI1/cNqLIrCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"756a60ce8609a9931e18ac7b30e280dc3051bca322cb0dcbb62e121a3fe17608","last_reissued_at":"2026-08-05T00:44:37.737154Z","signature_status":"signed_v1","first_computed_at":"2026-08-05T00:44:37.737154Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2608.03021","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":"2026-08-05T00:44:37Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Sx+SBTG+dUeFsplnK/kTDSFAOm3eQ+og8yDhm81a8c4Xbt8vdDjAdD8B6QW9oo4O8Q/ODanKVLeI4PD3o0bUBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-06T08:50:49.688703Z"},"content_sha256":"4b29293aef6167c6202fec277d20594a64467c6d9d9c81bd90ee3d648bfe44b2","schema_version":"1.0","event_id":"sha256:4b29293aef6167c6202fec277d20594a64467c6d9d9c81bd90ee3d648bfe44b2"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2026:OVVGBTUGBGUZGHQYVR5TBYUA3Q","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"MeloCodec: Harnessing Melodic Priors for High-Fidelity Singing Voice Representation","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cs.SD","authors_text":"Chunfeng Wang, Hao Li, Kecan Mao, Qifei Li, Ruimin Wang, Wei Chen, Wenxin Fu, Ya Li, Yingming Gao, Yizhong Geng","submitted_at":"2026-08-04T02:06:46Z","abstract_excerpt":"Neural audio codecs serve as fundamental tokenizers for LLM-based audio generation. While semantic priors are widely exploited to enhance linguistic intelligibility, the integration of explicit acoustic priors remains underexplored, limiting synthesis fidelity in frequency-sensitive domains. To address this gap, we introduce MeloCodec, a novel framework designed to effectively incorporate melodic priors, a critical form of acoustic information for singing. To address the optimization instability typically caused by the direct fusion of such explicit priors, we propose a Tokenize-then-Fuse para"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2608.03021","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/2608.03021/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":"2026-08-05T00:44:37Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"rwi2cDS4DWuPXuF0FxeSr0p8tNtV469bJSJhZZZNYBxGcryxlfuYDSWjNTzn3lUVG5z0xG07ntDCZqwHUfdrAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-06T08:50:49.689472Z"},"content_sha256":"d72fdc2b063a5585a20efe9f0b9babc79cc18c99934092c902ac982e4d947647","schema_version":"1.0","event_id":"sha256:d72fdc2b063a5585a20efe9f0b9babc79cc18c99934092c902ac982e4d947647"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/OVVGBTUGBGUZGHQYVR5TBYUA3Q/bundle.json","state_url":"https://pith.science/pith/OVVGBTUGBGUZGHQYVR5TBYUA3Q/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/OVVGBTUGBGUZGHQYVR5TBYUA3Q/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":"2026-08-06T08:50:49Z","links":{"resolver":"https://pith.science/pith/OVVGBTUGBGUZGHQYVR5TBYUA3Q","bundle":"https://pith.science/pith/OVVGBTUGBGUZGHQYVR5TBYUA3Q/bundle.json","state":"https://pith.science/pith/OVVGBTUGBGUZGHQYVR5TBYUA3Q/state.json","well_known_bundle":"https://pith.science/.well-known/pith/OVVGBTUGBGUZGHQYVR5TBYUA3Q/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:OVVGBTUGBGUZGHQYVR5TBYUA3Q","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":"9040f36f269f0f2bf6b41a088310bbc7290e02f4d9971003a64702e171c73ee8","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.SD","submitted_at":"2026-08-04T02:06:46Z","title_canon_sha256":"a7b9a78d071e31e56389d79f4a2f506642ad57ec4998f0763d7d37e1af6e70e0"},"schema_version":"1.0","source":{"id":"2608.03021","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2608.03021","created_at":"2026-08-05T00:44:37Z"},{"alias_kind":"arxiv_version","alias_value":"2608.03021v1","created_at":"2026-08-05T00:44:37Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2608.03021","created_at":"2026-08-05T00:44:37Z"},{"alias_kind":"pith_short_12","alias_value":"OVVGBTUGBGUZ","created_at":"2026-08-05T00:44:37Z"},{"alias_kind":"pith_short_16","alias_value":"OVVGBTUGBGUZGHQY","created_at":"2026-08-05T00:44:37Z"},{"alias_kind":"pith_short_8","alias_value":"OVVGBTUG","created_at":"2026-08-05T00:44:37Z"}],"graph_snapshots":[{"event_id":"sha256:d72fdc2b063a5585a20efe9f0b9babc79cc18c99934092c902ac982e4d947647","target":"graph","created_at":"2026-08-05T00:44:37Z","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/2608.03021/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Neural audio codecs serve as fundamental tokenizers for LLM-based audio generation. While semantic priors are widely exploited to enhance linguistic intelligibility, the integration of explicit acoustic priors remains underexplored, limiting synthesis fidelity in frequency-sensitive domains. To address this gap, we introduce MeloCodec, a novel framework designed to effectively incorporate melodic priors, a critical form of acoustic information for singing. To address the optimization instability typically caused by the direct fusion of such explicit priors, we propose a Tokenize-then-Fuse para","authors_text":"Chunfeng Wang, Hao Li, Kecan Mao, Qifei Li, Ruimin Wang, Wei Chen, Wenxin Fu, Ya Li, Yingming Gao, Yizhong Geng","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.SD","submitted_at":"2026-08-04T02:06:46Z","title":"MeloCodec: Harnessing Melodic Priors for High-Fidelity Singing Voice Representation"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2608.03021","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":"sha256:4b29293aef6167c6202fec277d20594a64467c6d9d9c81bd90ee3d648bfe44b2","target":"record","created_at":"2026-08-05T00:44:37Z","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":"9040f36f269f0f2bf6b41a088310bbc7290e02f4d9971003a64702e171c73ee8","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.SD","submitted_at":"2026-08-04T02:06:46Z","title_canon_sha256":"a7b9a78d071e31e56389d79f4a2f506642ad57ec4998f0763d7d37e1af6e70e0"},"schema_version":"1.0","source":{"id":"2608.03021","kind":"arxiv","version":1}},"canonical_sha256":"756a60ce8609a9931e18ac7b30e280dc3051bca322cb0dcbb62e121a3fe17608","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"756a60ce8609a9931e18ac7b30e280dc3051bca322cb0dcbb62e121a3fe17608","first_computed_at":"2026-08-05T00:44:37.737154Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-08-05T00:44:37.737154Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"E9kP+P5ri5nY1oJMwVbGsyG1FBzK5EGGFNh34Gumi7pJwptMWzBx6Cp0I0CAIX83YUyu2hLvybUI1/cNqLIrCA==","signature_status":"signed_v1","signed_at":"2026-08-05T00:44:37.739840Z","signed_message":"canonical_sha256_bytes"},"source_id":"2608.03021","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:4b29293aef6167c6202fec277d20594a64467c6d9d9c81bd90ee3d648bfe44b2","sha256:d72fdc2b063a5585a20efe9f0b9babc79cc18c99934092c902ac982e4d947647"],"state_sha256":"4f14fb2719807ad1628d30711721c49466f16465ebcbf8ecb534da636eb491d5"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"AIN/OPCafmKa7hsVThzCB/X1zSp7IRpkeWVtEaNTik3Ub0+l5Wp0ba1vDGBpP5F7a88t1rYjE+jBT55PWp4LCg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-06T08:50:49.696682Z","bundle_sha256":"50b421b0429782548a534fb8aa13ada5f19f28d8368035213b917a320e2d18de"}}