{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2026:PTVKMAZCZ6XSJQZUNNB2AFBJBL","short_pith_number":"pith:PTVKMAZC","canonical_record":{"source":{"id":"2608.12913","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.CL","submitted_at":"2026-08-13T07:56:16Z","cross_cats_sorted":[],"title_canon_sha256":"e4590445b0356e65025f50456f4230c5dbc4f61be2d31c2730bd9a428a1f0a27","abstract_canon_sha256":"eb85a4bfcffa1f5474afde14bf5db4d0c40f2e516dd5d4720469e981eaaea660"},"schema_version":"1.0"},"canonical_sha256":"7ceaa60322cfaf24c3346b43a014290ac88afb20a740a5c7e06532b64a51110a","source":{"kind":"arxiv","id":"2608.12913","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2608.12913","created_at":"2026-08-14T00:58:56Z"},{"alias_kind":"arxiv_version","alias_value":"2608.12913v1","created_at":"2026-08-14T00:58:56Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2608.12913","created_at":"2026-08-14T00:58:56Z"},{"alias_kind":"pith_short_12","alias_value":"PTVKMAZCZ6XS","created_at":"2026-08-14T00:58:56Z"},{"alias_kind":"pith_short_16","alias_value":"PTVKMAZCZ6XSJQZU","created_at":"2026-08-14T00:58:56Z"},{"alias_kind":"pith_short_8","alias_value":"PTVKMAZC","created_at":"2026-08-14T00:58:56Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2026:PTVKMAZCZ6XSJQZUNNB2AFBJBL","target":"record","payload":{"canonical_record":{"source":{"id":"2608.12913","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.CL","submitted_at":"2026-08-13T07:56:16Z","cross_cats_sorted":[],"title_canon_sha256":"e4590445b0356e65025f50456f4230c5dbc4f61be2d31c2730bd9a428a1f0a27","abstract_canon_sha256":"eb85a4bfcffa1f5474afde14bf5db4d0c40f2e516dd5d4720469e981eaaea660"},"schema_version":"1.0"},"canonical_sha256":"7ceaa60322cfaf24c3346b43a014290ac88afb20a740a5c7e06532b64a51110a","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-08-14T00:58:56.211163Z","signature_b64":"385HKDIqfRizXPByzbwTanpGT3G4vg77D9VctpcNpezUj7PJjpYG7GbL9JS9PdI2UTUGqjWRfyZ4IXsv2vqhBA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"7ceaa60322cfaf24c3346b43a014290ac88afb20a740a5c7e06532b64a51110a","last_reissued_at":"2026-08-14T00:58:56.209030Z","signature_status":"signed_v1","first_computed_at":"2026-08-14T00:58:56.209030Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2608.12913","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":"2026-08-14T00:58:56Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"o4hvU++qVQ3Xzr/QFmDmp+bRC2xWCdDoYg+9EVaxBu7uv5G5Da1r4W09vgfQl8vguxDckLJsm/iej2jkpRHCAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-18T07:12:20.923387Z"},"content_sha256":"bd4e8aa016b14329aea63aff7cd9f50ccfeff4ce4f3ca1413dea45bdecda70fc","schema_version":"1.0","event_id":"sha256:bd4e8aa016b14329aea63aff7cd9f50ccfeff4ce4f3ca1413dea45bdecda70fc"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2026:PTVKMAZCZ6XSJQZUNNB2AFBJBL","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Decoupled Contrastive Decoding via Expert-Aligned Drafting","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"cs.CL","authors_text":"Chao Yang, Yuanfu Wang, Zhichen Dong, Zhixuan Liu","submitted_at":"2026-08-13T07:56:16Z","abstract_excerpt":"Contrastive Decoding (CD) improves generation quality, but its amateur-model pass makes decoding expensive. Accelerating CD with speculative decoding raises a proposal-alignment question: should the contrastive signal shape the drafter, or should it remain only in verification? We study this question in the lightweight feature-level drafter regime. Two controlled diagnostics, matched Cross-alpha training and an Approximate Dual-Drafter decomposition, give the same diagnosis: contrastive-aware drafting does not consistently improve over expert-aligned drafting because the contrastive correction"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2608.12913","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/2608.12913/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":"2026-08-14T00:58:56Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"2HKxNiTfXH3/IfsCpl9Df5j1oXFjo4NGnjAysMjXvSbgNQjXWooLNI0ORx+EanRzRAL3s3a04y/PAqmwER1dDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-18T07:12:20.924493Z"},"content_sha256":"b7c9f1ce8a1d9254714daffecbf05d596f0080999dfc9e33be9dd7fd060b42b4","schema_version":"1.0","event_id":"sha256:b7c9f1ce8a1d9254714daffecbf05d596f0080999dfc9e33be9dd7fd060b42b4"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/PTVKMAZCZ6XSJQZUNNB2AFBJBL/bundle.json","state_url":"https://pith.science/pith/PTVKMAZCZ6XSJQZUNNB2AFBJBL/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/PTVKMAZCZ6XSJQZUNNB2AFBJBL/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":"2026-08-18T07:12:20Z","links":{"resolver":"https://pith.science/pith/PTVKMAZCZ6XSJQZUNNB2AFBJBL","bundle":"https://pith.science/pith/PTVKMAZCZ6XSJQZUNNB2AFBJBL/bundle.json","state":"https://pith.science/pith/PTVKMAZCZ6XSJQZUNNB2AFBJBL/state.json","well_known_bundle":"https://pith.science/.well-known/pith/PTVKMAZCZ6XSJQZUNNB2AFBJBL/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:PTVKMAZCZ6XSJQZUNNB2AFBJBL","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":"eb85a4bfcffa1f5474afde14bf5db4d0c40f2e516dd5d4720469e981eaaea660","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.CL","submitted_at":"2026-08-13T07:56:16Z","title_canon_sha256":"e4590445b0356e65025f50456f4230c5dbc4f61be2d31c2730bd9a428a1f0a27"},"schema_version":"1.0","source":{"id":"2608.12913","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2608.12913","created_at":"2026-08-14T00:58:56Z"},{"alias_kind":"arxiv_version","alias_value":"2608.12913v1","created_at":"2026-08-14T00:58:56Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2608.12913","created_at":"2026-08-14T00:58:56Z"},{"alias_kind":"pith_short_12","alias_value":"PTVKMAZCZ6XS","created_at":"2026-08-14T00:58:56Z"},{"alias_kind":"pith_short_16","alias_value":"PTVKMAZCZ6XSJQZU","created_at":"2026-08-14T00:58:56Z"},{"alias_kind":"pith_short_8","alias_value":"PTVKMAZC","created_at":"2026-08-14T00:58:56Z"}],"graph_snapshots":[{"event_id":"sha256:b7c9f1ce8a1d9254714daffecbf05d596f0080999dfc9e33be9dd7fd060b42b4","target":"graph","created_at":"2026-08-14T00:58:56Z","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/2608.12913/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Contrastive Decoding (CD) improves generation quality, but its amateur-model pass makes decoding expensive. Accelerating CD with speculative decoding raises a proposal-alignment question: should the contrastive signal shape the drafter, or should it remain only in verification? We study this question in the lightweight feature-level drafter regime. Two controlled diagnostics, matched Cross-alpha training and an Approximate Dual-Drafter decomposition, give the same diagnosis: contrastive-aware drafting does not consistently improve over expert-aligned drafting because the contrastive correction","authors_text":"Chao Yang, Yuanfu Wang, Zhichen Dong, Zhixuan Liu","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.CL","submitted_at":"2026-08-13T07:56:16Z","title":"Decoupled Contrastive Decoding via Expert-Aligned Drafting"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2608.12913","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:bd4e8aa016b14329aea63aff7cd9f50ccfeff4ce4f3ca1413dea45bdecda70fc","target":"record","created_at":"2026-08-14T00:58:56Z","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":"eb85a4bfcffa1f5474afde14bf5db4d0c40f2e516dd5d4720469e981eaaea660","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.CL","submitted_at":"2026-08-13T07:56:16Z","title_canon_sha256":"e4590445b0356e65025f50456f4230c5dbc4f61be2d31c2730bd9a428a1f0a27"},"schema_version":"1.0","source":{"id":"2608.12913","kind":"arxiv","version":1}},"canonical_sha256":"7ceaa60322cfaf24c3346b43a014290ac88afb20a740a5c7e06532b64a51110a","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"7ceaa60322cfaf24c3346b43a014290ac88afb20a740a5c7e06532b64a51110a","first_computed_at":"2026-08-14T00:58:56.209030Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-08-14T00:58:56.209030Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"385HKDIqfRizXPByzbwTanpGT3G4vg77D9VctpcNpezUj7PJjpYG7GbL9JS9PdI2UTUGqjWRfyZ4IXsv2vqhBA==","signature_status":"signed_v1","signed_at":"2026-08-14T00:58:56.211163Z","signed_message":"canonical_sha256_bytes"},"source_id":"2608.12913","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:bd4e8aa016b14329aea63aff7cd9f50ccfeff4ce4f3ca1413dea45bdecda70fc","sha256:b7c9f1ce8a1d9254714daffecbf05d596f0080999dfc9e33be9dd7fd060b42b4"],"state_sha256":"fc717d949a6a755ca259141cd1cd368e17a08c6fb837bdb95e1df2dedacd0f5f"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"pxHE2aA2OvSYZAM6JZ4ig1ICJrH8kZ9XWJfk8cxTX6b25X8fR6wjfkyUYPlhhwDMFVOw5Uhw18dtLCdRRrCIAA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-18T07:12:20.929494Z","bundle_sha256":"6d6bf409c282093fc59b4422a1a9d108b5339ca250dc2ab3a4ef39a64d6094a2"}}