{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2025:2UE6WUODR3MELQJMN2THQT6NAN","short_pith_number":"pith:2UE6WUOD","canonical_record":{"source":{"id":"2501.13950","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.CV","submitted_at":"2025-01-20T02:55:46Z","cross_cats_sorted":[],"title_canon_sha256":"00a59076980a17ad0e1eedf74326f669f86986db4eabab5c8b4494337bb9fe09","abstract_canon_sha256":"f02ca8cdd3aab768871c681eb16cb0599c1086fc8d670f50f80dc42a364399b6"},"schema_version":"1.0"},"canonical_sha256":"d509eb51c38ed845c12c6ea6784fcd035c4c7637e7612506944919b0b6e7c5cd","source":{"kind":"arxiv","id":"2501.13950","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2501.13950","created_at":"2026-07-05T10:04:43Z"},{"alias_kind":"arxiv_version","alias_value":"2501.13950v1","created_at":"2026-07-05T10:04:43Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2501.13950","created_at":"2026-07-05T10:04:43Z"},{"alias_kind":"pith_short_12","alias_value":"2UE6WUODR3ME","created_at":"2026-07-05T10:04:43Z"},{"alias_kind":"pith_short_16","alias_value":"2UE6WUODR3MELQJM","created_at":"2026-07-05T10:04:43Z"},{"alias_kind":"pith_short_8","alias_value":"2UE6WUOD","created_at":"2026-07-05T10:04:43Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2025:2UE6WUODR3MELQJMN2THQT6NAN","target":"record","payload":{"canonical_record":{"source":{"id":"2501.13950","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.CV","submitted_at":"2025-01-20T02:55:46Z","cross_cats_sorted":[],"title_canon_sha256":"00a59076980a17ad0e1eedf74326f669f86986db4eabab5c8b4494337bb9fe09","abstract_canon_sha256":"f02ca8cdd3aab768871c681eb16cb0599c1086fc8d670f50f80dc42a364399b6"},"schema_version":"1.0"},"canonical_sha256":"d509eb51c38ed845c12c6ea6784fcd035c4c7637e7612506944919b0b6e7c5cd","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T10:04:43.026715Z","signature_b64":"K9p1rVHxzDP/YwF1/N7nbS6Ok4pfm1iRbwGOO1vnCW5Sc4VrmS0vu0WegMzF+vfOWKSrkdeDgg4IZrkBW+STCw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d509eb51c38ed845c12c6ea6784fcd035c4c7637e7612506944919b0b6e7c5cd","last_reissued_at":"2026-07-05T10:04:43.026277Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T10:04:43.026277Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2501.13950","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":"2026-07-05T10:04:43Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"/VStgAY5JIk36cc9QXmW4vlAU5EdSCLuuCPNAaur7FA9s36W1P48c10DxtN/wME7KM/yfx2/dXm+f+6/z5ODDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-12T23:45:55.988265Z"},"content_sha256":"dbc76c5661fb2f05893bff037a1b37d0eda24e2eaf306d0d744b2fa9ff8783bf","schema_version":"1.0","event_id":"sha256:dbc76c5661fb2f05893bff037a1b37d0eda24e2eaf306d0d744b2fa9ff8783bf"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2025:2UE6WUODR3MELQJMN2THQT6NAN","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"DEFEND: A Large-scale 1M Dataset and Foundation Model for Tobacco Addiction Prevention","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"cs.CV","authors_text":"Charlotte McCormick, Connor McCurtain, Khoa Luu, Matthew Shepard, Naga VS Raviteja Chappa, Page Daniel Dobbs","submitted_at":"2025-01-20T02:55:46Z","abstract_excerpt":"While tobacco advertising innovates at unprecedented speed, traditional surveillance methods remain frozen in time, especially in the context of social media. The lack of large-scale, comprehensive datasets and sophisticated monitoring systems has created a widening gap between industry advancement and public health oversight. This paper addresses this critical challenge by introducing Tobacco-1M, a comprehensive dataset of one million tobacco product images with hierarchical labels spanning 75 product categories, and DEFEND, a novel foundation model for tobacco product understanding. Our appr"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2501.13950","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/2501.13950/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":"2026-07-05T10:04:43Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"qkrVgW6iAvA5fdniOmg22Dv/MuZfnlnLvntprPPqFS90KDdiwAo/fW/MDd0MBR5dZR6vcpL1vq5th5UXU1VdAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-12T23:45:55.989032Z"},"content_sha256":"b81d29e2d6fc3713b70bec20ef61533e70ec18172061e8ef890bf9f6de49653b","schema_version":"1.0","event_id":"sha256:b81d29e2d6fc3713b70bec20ef61533e70ec18172061e8ef890bf9f6de49653b"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/2UE6WUODR3MELQJMN2THQT6NAN/bundle.json","state_url":"https://pith.science/pith/2UE6WUODR3MELQJMN2THQT6NAN/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/2UE6WUODR3MELQJMN2THQT6NAN/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":"2026-08-12T23:45:55Z","links":{"resolver":"https://pith.science/pith/2UE6WUODR3MELQJMN2THQT6NAN","bundle":"https://pith.science/pith/2UE6WUODR3MELQJMN2THQT6NAN/bundle.json","state":"https://pith.science/pith/2UE6WUODR3MELQJMN2THQT6NAN/state.json","well_known_bundle":"https://pith.science/.well-known/pith/2UE6WUODR3MELQJMN2THQT6NAN/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2025:2UE6WUODR3MELQJMN2THQT6NAN","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":"f02ca8cdd3aab768871c681eb16cb0599c1086fc8d670f50f80dc42a364399b6","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.CV","submitted_at":"2025-01-20T02:55:46Z","title_canon_sha256":"00a59076980a17ad0e1eedf74326f669f86986db4eabab5c8b4494337bb9fe09"},"schema_version":"1.0","source":{"id":"2501.13950","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2501.13950","created_at":"2026-07-05T10:04:43Z"},{"alias_kind":"arxiv_version","alias_value":"2501.13950v1","created_at":"2026-07-05T10:04:43Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2501.13950","created_at":"2026-07-05T10:04:43Z"},{"alias_kind":"pith_short_12","alias_value":"2UE6WUODR3ME","created_at":"2026-07-05T10:04:43Z"},{"alias_kind":"pith_short_16","alias_value":"2UE6WUODR3MELQJM","created_at":"2026-07-05T10:04:43Z"},{"alias_kind":"pith_short_8","alias_value":"2UE6WUOD","created_at":"2026-07-05T10:04:43Z"}],"graph_snapshots":[{"event_id":"sha256:b81d29e2d6fc3713b70bec20ef61533e70ec18172061e8ef890bf9f6de49653b","target":"graph","created_at":"2026-07-05T10:04:43Z","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/2501.13950/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"While tobacco advertising innovates at unprecedented speed, traditional surveillance methods remain frozen in time, especially in the context of social media. The lack of large-scale, comprehensive datasets and sophisticated monitoring systems has created a widening gap between industry advancement and public health oversight. This paper addresses this critical challenge by introducing Tobacco-1M, a comprehensive dataset of one million tobacco product images with hierarchical labels spanning 75 product categories, and DEFEND, a novel foundation model for tobacco product understanding. Our appr","authors_text":"Charlotte McCormick, Connor McCurtain, Khoa Luu, Matthew Shepard, Naga VS Raviteja Chappa, Page Daniel Dobbs","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.CV","submitted_at":"2025-01-20T02:55:46Z","title":"DEFEND: A Large-scale 1M Dataset and Foundation Model for Tobacco Addiction Prevention"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2501.13950","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:dbc76c5661fb2f05893bff037a1b37d0eda24e2eaf306d0d744b2fa9ff8783bf","target":"record","created_at":"2026-07-05T10:04:43Z","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":"f02ca8cdd3aab768871c681eb16cb0599c1086fc8d670f50f80dc42a364399b6","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.CV","submitted_at":"2025-01-20T02:55:46Z","title_canon_sha256":"00a59076980a17ad0e1eedf74326f669f86986db4eabab5c8b4494337bb9fe09"},"schema_version":"1.0","source":{"id":"2501.13950","kind":"arxiv","version":1}},"canonical_sha256":"d509eb51c38ed845c12c6ea6784fcd035c4c7637e7612506944919b0b6e7c5cd","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"d509eb51c38ed845c12c6ea6784fcd035c4c7637e7612506944919b0b6e7c5cd","first_computed_at":"2026-07-05T10:04:43.026277Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T10:04:43.026277Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"K9p1rVHxzDP/YwF1/N7nbS6Ok4pfm1iRbwGOO1vnCW5Sc4VrmS0vu0WegMzF+vfOWKSrkdeDgg4IZrkBW+STCw==","signature_status":"signed_v1","signed_at":"2026-07-05T10:04:43.026715Z","signed_message":"canonical_sha256_bytes"},"source_id":"2501.13950","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:dbc76c5661fb2f05893bff037a1b37d0eda24e2eaf306d0d744b2fa9ff8783bf","sha256:b81d29e2d6fc3713b70bec20ef61533e70ec18172061e8ef890bf9f6de49653b"],"state_sha256":"6f98bd599686702aa298ccb6d80c0c652626cb6c359a40b17c4e99ecdaece00c"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"VKA6RX4b3N79IXjs0FV5U7WzgWQJDCFkXITScAnH+F3k4Fc8DGdbUKusNi/62vLzIjqAB2BO+B9fz2MqR7edCQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-12T23:45:55.996139Z","bundle_sha256":"7f738ece99f99a5e8b401c505ede5d0e08890b34f868358a806f6112df131ae1"}}