{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:7WH4LKBMPEWSBDUJQHADZM2RB6","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":"f6a17ffe4d1b5ec2a1fdafa7fef4a4c76b74cce48f8a15f09da71e473b9488ff","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.CR","submitted_at":"2026-08-05T16:51:02Z","title_canon_sha256":"7114c2e0f6fa89893bfd5254d8fbc108c7638d054999a566c8ca611ea81f92cb"},"schema_version":"1.0","source":{"id":"2608.05040","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2608.05040","created_at":"2026-08-06T01:48:05Z"},{"alias_kind":"arxiv_version","alias_value":"2608.05040v1","created_at":"2026-08-06T01:48:05Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2608.05040","created_at":"2026-08-06T01:48:05Z"},{"alias_kind":"pith_short_12","alias_value":"7WH4LKBMPEWS","created_at":"2026-08-06T01:48:05Z"},{"alias_kind":"pith_short_16","alias_value":"7WH4LKBMPEWSBDUJ","created_at":"2026-08-06T01:48:05Z"},{"alias_kind":"pith_short_8","alias_value":"7WH4LKBM","created_at":"2026-08-06T01:48:05Z"}],"graph_snapshots":[{"event_id":"sha256:f7c505725843ae7083bbfc35005e640313e368f7a91f21f78d0677987f4a0340","target":"graph","created_at":"2026-08-06T01:48:05Z","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/2608.05040/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Direct preference optimization (DPO) is now a standard method for aligning large language models (LLMs) using human preference data. Each DPO example contains a prompt and a pair of candidate model responses. While prompts and responses are often public or model-generated, the relative preference between responses reflects subjective judgments and can reveal sensitive attributes of annotators or end users. Off-the-shelf privacy-preserving approaches are not well matched to this structure, leading to unnecessary noise injection and biased updates in training.\n  In this paper, we formalize prefe","authors_text":"Bolin Ding, Ergute Bao, Fei Wei, Xiaokui Xiao, Yaliang Li, YangFan Jiang","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.CR","submitted_at":"2026-08-05T16:51:02Z","title":"Private Direct Preference Optimization for LLM Alignment"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2608.05040","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:a77eb41582504e124e1bddcc0fc3d21caabe0c8ddf97e09c0a5edef474d945bd","target":"record","created_at":"2026-08-06T01:48:05Z","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":"f6a17ffe4d1b5ec2a1fdafa7fef4a4c76b74cce48f8a15f09da71e473b9488ff","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.CR","submitted_at":"2026-08-05T16:51:02Z","title_canon_sha256":"7114c2e0f6fa89893bfd5254d8fbc108c7638d054999a566c8ca611ea81f92cb"},"schema_version":"1.0","source":{"id":"2608.05040","kind":"arxiv","version":1}},"canonical_sha256":"fd8fc5a82c792d208e8981c03cb3510f8fd1a43def4b81f929f5b07741544927","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"fd8fc5a82c792d208e8981c03cb3510f8fd1a43def4b81f929f5b07741544927","first_computed_at":"2026-08-06T01:48:05.704483Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-08-06T01:48:05.704483Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"O6KItOnAEV7cJUUrSZdR+k/3KGpEmJ3ziEOxlvLiq5zY84ZWxkU95p/0SVBQlm4tUue/NVc8Ix/quA1Y0t4FAg==","signature_status":"signed_v1","signed_at":"2026-08-06T01:48:05.705905Z","signed_message":"canonical_sha256_bytes"},"source_id":"2608.05040","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:a77eb41582504e124e1bddcc0fc3d21caabe0c8ddf97e09c0a5edef474d945bd","sha256:f7c505725843ae7083bbfc35005e640313e368f7a91f21f78d0677987f4a0340"],"state_sha256":"1f1b6c23fb1a5d9da9e7ee7a0af29489cd2301a9b06f516f810d04a43f70ed4f"}