{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2026:OT4FMRG5JKG675UVEH7G3HFZ2W","short_pith_number":"pith:OT4FMRG5","canonical_record":{"source":{"id":"2607.23514","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.CL","submitted_at":"2026-07-26T07:29:47Z","cross_cats_sorted":["cs.AI","cs.MM"],"title_canon_sha256":"4a0c9583074260dc7463e3af36473c5706cf26ad8b3a3735c42e51098f6cfc19","abstract_canon_sha256":"aa4ebbb4344b7009f3f8ec08a36b9172e47ee650b28a516f8282231899e8b338"},"schema_version":"1.0"},"canonical_sha256":"74f85644dd4a8deff69521fe6d9cb9d5b29e17388829a5a5592cd42242f345ca","source":{"kind":"arxiv","id":"2607.23514","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2607.23514","created_at":"2026-07-28T01:22:56Z"},{"alias_kind":"arxiv_version","alias_value":"2607.23514v1","created_at":"2026-07-28T01:22:56Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2607.23514","created_at":"2026-07-28T01:22:56Z"},{"alias_kind":"pith_short_12","alias_value":"OT4FMRG5JKG6","created_at":"2026-07-28T01:22:56Z"},{"alias_kind":"pith_short_16","alias_value":"OT4FMRG5JKG675UV","created_at":"2026-07-28T01:22:56Z"},{"alias_kind":"pith_short_8","alias_value":"OT4FMRG5","created_at":"2026-07-28T01:22:56Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2026:OT4FMRG5JKG675UVEH7G3HFZ2W","target":"record","payload":{"canonical_record":{"source":{"id":"2607.23514","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.CL","submitted_at":"2026-07-26T07:29:47Z","cross_cats_sorted":["cs.AI","cs.MM"],"title_canon_sha256":"4a0c9583074260dc7463e3af36473c5706cf26ad8b3a3735c42e51098f6cfc19","abstract_canon_sha256":"aa4ebbb4344b7009f3f8ec08a36b9172e47ee650b28a516f8282231899e8b338"},"schema_version":"1.0"},"canonical_sha256":"74f85644dd4a8deff69521fe6d9cb9d5b29e17388829a5a5592cd42242f345ca","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-28T01:22:56.922993Z","signature_b64":"RAebmzY5g7YmWTgtIx4iPDxkOuRmK90W2PhNSPxF6Y1pGR9yPfP8WvqFP3EW8xDQb/0ol4ld50clrGneGFubCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"74f85644dd4a8deff69521fe6d9cb9d5b29e17388829a5a5592cd42242f345ca","last_reissued_at":"2026-07-28T01:22:56.922086Z","signature_status":"signed_v1","first_computed_at":"2026-07-28T01:22:56.922086Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2607.23514","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":"2026-07-28T01:22:56Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"l9puRgurEbVDctpZ4xFD9AGZkto20udC+s5akpqmvpZuK0qugK09zezr/E7StNtMK5qFczQ7iCQq5+9wtRCGBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-12T22:45:52.808847Z"},"content_sha256":"30ba306f5a73f465ca8eb0556a0b10bf36f21b14e53e7d0be1e1d6ebeb42b54b","schema_version":"1.0","event_id":"sha256:30ba306f5a73f465ca8eb0556a0b10bf36f21b14e53e7d0be1e1d6ebeb42b54b"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2026:OT4FMRG5JKG675UVEH7G3HFZ2W","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Novel Claim or D\\'ej\\`a Vu? Rethinking \"Contamination-Free'' Dynamic Evaluation for Multimodal Automated Fact-Checking","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["cs.AI","cs.MM"],"primary_cat":"cs.CL","authors_text":"Dacheng Wen, Francis C. M. Lau, Haorui He, Reynold Cheng, Xinwen Chen, Yupeng Li","submitted_at":"2026-07-26T07:29:47Z","abstract_excerpt":"Multimodal automated fact-checking (MAFC) verifies claims by retrieving and reasoning over external evidence. However, most existing static benchmarks risk contamination: they primarily consist of outdated claims verifiable using an LLM's internal knowledge without external evidence. This can inflate performance estimates and fail to reflect true capability on novel claims that require up-to-date information. To address this, emerging dynamic benchmarks collect claims published after LLMs' knowledge cut-off dates, assuming they are uncontaminated. This work revisits this assumption by empirica"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2607.23514","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/2607.23514/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":"2026-07-28T01:22:56Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"HEeYYSQypxEXvOmI7bkFn1GdngqzRSfBj3sPTAZSEDyQHf6Gvh64dMZrgmj+dS9AgDqVphMpkr2Dc3rrj0uRAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-12T22:45:52.809862Z"},"content_sha256":"7f3e151b07849cc5f1a78a4105fccb35199a59cd6720b734e9ac96e6372a36db","schema_version":"1.0","event_id":"sha256:7f3e151b07849cc5f1a78a4105fccb35199a59cd6720b734e9ac96e6372a36db"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/OT4FMRG5JKG675UVEH7G3HFZ2W/bundle.json","state_url":"https://pith.science/pith/OT4FMRG5JKG675UVEH7G3HFZ2W/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/OT4FMRG5JKG675UVEH7G3HFZ2W/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":"2026-08-12T22:45:52Z","links":{"resolver":"https://pith.science/pith/OT4FMRG5JKG675UVEH7G3HFZ2W","bundle":"https://pith.science/pith/OT4FMRG5JKG675UVEH7G3HFZ2W/bundle.json","state":"https://pith.science/pith/OT4FMRG5JKG675UVEH7G3HFZ2W/state.json","well_known_bundle":"https://pith.science/.well-known/pith/OT4FMRG5JKG675UVEH7G3HFZ2W/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:OT4FMRG5JKG675UVEH7G3HFZ2W","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":"aa4ebbb4344b7009f3f8ec08a36b9172e47ee650b28a516f8282231899e8b338","cross_cats_sorted":["cs.AI","cs.MM"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.CL","submitted_at":"2026-07-26T07:29:47Z","title_canon_sha256":"4a0c9583074260dc7463e3af36473c5706cf26ad8b3a3735c42e51098f6cfc19"},"schema_version":"1.0","source":{"id":"2607.23514","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2607.23514","created_at":"2026-07-28T01:22:56Z"},{"alias_kind":"arxiv_version","alias_value":"2607.23514v1","created_at":"2026-07-28T01:22:56Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2607.23514","created_at":"2026-07-28T01:22:56Z"},{"alias_kind":"pith_short_12","alias_value":"OT4FMRG5JKG6","created_at":"2026-07-28T01:22:56Z"},{"alias_kind":"pith_short_16","alias_value":"OT4FMRG5JKG675UV","created_at":"2026-07-28T01:22:56Z"},{"alias_kind":"pith_short_8","alias_value":"OT4FMRG5","created_at":"2026-07-28T01:22:56Z"}],"graph_snapshots":[{"event_id":"sha256:7f3e151b07849cc5f1a78a4105fccb35199a59cd6720b734e9ac96e6372a36db","target":"graph","created_at":"2026-07-28T01:22:56Z","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/2607.23514/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Multimodal automated fact-checking (MAFC) verifies claims by retrieving and reasoning over external evidence. However, most existing static benchmarks risk contamination: they primarily consist of outdated claims verifiable using an LLM's internal knowledge without external evidence. This can inflate performance estimates and fail to reflect true capability on novel claims that require up-to-date information. To address this, emerging dynamic benchmarks collect claims published after LLMs' knowledge cut-off dates, assuming they are uncontaminated. This work revisits this assumption by empirica","authors_text":"Dacheng Wen, Francis C. M. Lau, Haorui He, Reynold Cheng, Xinwen Chen, Yupeng Li","cross_cats":["cs.AI","cs.MM"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.CL","submitted_at":"2026-07-26T07:29:47Z","title":"Novel Claim or D\\'ej\\`a Vu? Rethinking \"Contamination-Free'' Dynamic Evaluation for Multimodal Automated Fact-Checking"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2607.23514","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":"sha256:30ba306f5a73f465ca8eb0556a0b10bf36f21b14e53e7d0be1e1d6ebeb42b54b","target":"record","created_at":"2026-07-28T01:22:56Z","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":"aa4ebbb4344b7009f3f8ec08a36b9172e47ee650b28a516f8282231899e8b338","cross_cats_sorted":["cs.AI","cs.MM"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.CL","submitted_at":"2026-07-26T07:29:47Z","title_canon_sha256":"4a0c9583074260dc7463e3af36473c5706cf26ad8b3a3735c42e51098f6cfc19"},"schema_version":"1.0","source":{"id":"2607.23514","kind":"arxiv","version":1}},"canonical_sha256":"74f85644dd4a8deff69521fe6d9cb9d5b29e17388829a5a5592cd42242f345ca","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"74f85644dd4a8deff69521fe6d9cb9d5b29e17388829a5a5592cd42242f345ca","first_computed_at":"2026-07-28T01:22:56.922086Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-28T01:22:56.922086Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"RAebmzY5g7YmWTgtIx4iPDxkOuRmK90W2PhNSPxF6Y1pGR9yPfP8WvqFP3EW8xDQb/0ol4ld50clrGneGFubCg==","signature_status":"signed_v1","signed_at":"2026-07-28T01:22:56.922993Z","signed_message":"canonical_sha256_bytes"},"source_id":"2607.23514","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:30ba306f5a73f465ca8eb0556a0b10bf36f21b14e53e7d0be1e1d6ebeb42b54b","sha256:7f3e151b07849cc5f1a78a4105fccb35199a59cd6720b734e9ac96e6372a36db"],"state_sha256":"5c2bbc80796e6139e1b9185a02416532e8b27c598bff170b4911b64ca3865127"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"JBD08qh6EnCWo+vm9tjXO1JReYDKzBOEiXgOe4+dg3p3eA1KzjqeudipQE5r4TXkP/YsPfWrQsEkAJXYmZeeDg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-12T22:45:52.815908Z","bundle_sha256":"bee40731dbb12e9bfbb2fefdce0dcfd7399bd556d8f6df2e64fc75ef158a8c72"}}