{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:VNQV46QI54FTINRXTP3ANOXS4Z","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":"7e76d88cfcab52cd0009ddf06cba13bac5e7f8c0b779e39ab7ab711783d9c043","cross_cats_sorted":["cs.LG"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.AI","submitted_at":"2026-02-19T10:28:00Z","title_canon_sha256":"80fd87a5e58afb145f57fdb9d5a3e787fa62d7127203f0f2894618ac2342f1de"},"schema_version":"1.0","source":{"id":"2602.17234","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2602.17234","created_at":"2026-05-26T02:04:06Z"},{"alias_kind":"arxiv_version","alias_value":"2602.17234v2","created_at":"2026-05-26T02:04:06Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2602.17234","created_at":"2026-05-26T02:04:06Z"},{"alias_kind":"pith_short_12","alias_value":"VNQV46QI54FT","created_at":"2026-05-26T02:04:06Z"},{"alias_kind":"pith_short_16","alias_value":"VNQV46QI54FTINRX","created_at":"2026-05-26T02:04:06Z"},{"alias_kind":"pith_short_8","alias_value":"VNQV46QI","created_at":"2026-05-26T02:04:06Z"}],"graph_snapshots":[{"event_id":"sha256:020bfc3b86778a0c63abcaa7565634361e1031ca8155bc883f7ff10b6a57482c","target":"graph","created_at":"2026-05-26T02:04:06Z","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/2602.17234/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Backtesting LLMs on resolved events assumes models reason only from pre-cutoff knowledge, yet pretrained models inevitably leak post-cutoff knowledge. We introduce a claim-level evaluation framework that decomposes prediction rationales into atomic claims and applies Shapley values to quantify each claim's decision impact, yielding \\textbf{Shapley-DCLR} (\\textbf{Shapley}-weighted \\textbf{D}ecision-\\textbf{C}ritical \\textbf{L}eakage \\textbf{R}ate) -- an interpretable metric measuring what fraction of decision-driving reasoning is contaminated. We further propose \\textbf{TimeSPEC} (\\textbf{Time}","authors_text":"Bradly C. Stadie, Ryan Chen, Zeyu Zhang","cross_cats":["cs.LG"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.AI","submitted_at":"2026-02-19T10:28:00Z","title":"All Leaks Count, Some Count More: Interpretable Temporal Contamination Detection and Mitigation in LLM Backtesting"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2602.17234","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":"sha256:29066c198b3e467cdc548caba003ab3a87c1ad66a736f78f01ba8df9a489dbaf","target":"record","created_at":"2026-05-26T02:04:06Z","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":"7e76d88cfcab52cd0009ddf06cba13bac5e7f8c0b779e39ab7ab711783d9c043","cross_cats_sorted":["cs.LG"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.AI","submitted_at":"2026-02-19T10:28:00Z","title_canon_sha256":"80fd87a5e58afb145f57fdb9d5a3e787fa62d7127203f0f2894618ac2342f1de"},"schema_version":"1.0","source":{"id":"2602.17234","kind":"arxiv","version":2}},"canonical_sha256":"ab615e7a08ef0b3436379bf606baf2e65a8d63d262102e2373dd75feced553cd","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"ab615e7a08ef0b3436379bf606baf2e65a8d63d262102e2373dd75feced553cd","first_computed_at":"2026-05-26T02:04:06.682273Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-26T02:04:06.682273Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"9Xa+Q5g3bOM849VxdeO2VhrcdPVInRKdT24580sUiCz6Z67rTpoUMp68ambEuDAWXiFcO3bUe1R3aHanAJOUDw==","signature_status":"signed_v1","signed_at":"2026-05-26T02:04:06.683054Z","signed_message":"canonical_sha256_bytes"},"source_id":"2602.17234","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:29066c198b3e467cdc548caba003ab3a87c1ad66a736f78f01ba8df9a489dbaf","sha256:020bfc3b86778a0c63abcaa7565634361e1031ca8155bc883f7ff10b6a57482c"],"state_sha256":"26a4b02fb9ff58552fd4672e4139e4f92333d1692a8c95ba87b04b0f1415cd2f"}