{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2026:PXCQQBHXQWGPRGBU5EHAEXNGXF","short_pith_number":"pith:PXCQQBHX","canonical_record":{"source":{"id":"2603.02886","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.CV","submitted_at":"2026-03-03T11:34:57Z","cross_cats_sorted":["cs.AI"],"title_canon_sha256":"a61336d6691b32b79bb6a09cb8a4ab16c0356fb709fc698b720fb487f8b24bc6","abstract_canon_sha256":"e81aa1ce9fc474f55f266a0c477a9f63e95eea962f4d8e580680ed7370b4cd18"},"schema_version":"1.0"},"canonical_sha256":"7dc50804f7858cf89834e90e025da6b94d0cc7144ce3cc91cddf2fbaac833970","source":{"kind":"arxiv","id":"2603.02886","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2603.02886","created_at":"2026-07-29T01:24:30Z"},{"alias_kind":"arxiv_version","alias_value":"2603.02886v1","created_at":"2026-07-29T01:24:30Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2603.02886","created_at":"2026-07-29T01:24:30Z"},{"alias_kind":"pith_short_12","alias_value":"PXCQQBHXQWGP","created_at":"2026-07-29T01:24:30Z"},{"alias_kind":"pith_short_16","alias_value":"PXCQQBHXQWGPRGBU","created_at":"2026-07-29T01:24:30Z"},{"alias_kind":"pith_short_8","alias_value":"PXCQQBHX","created_at":"2026-07-29T01:24:30Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2026:PXCQQBHXQWGPRGBU5EHAEXNGXF","target":"record","payload":{"canonical_record":{"source":{"id":"2603.02886","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.CV","submitted_at":"2026-03-03T11:34:57Z","cross_cats_sorted":["cs.AI"],"title_canon_sha256":"a61336d6691b32b79bb6a09cb8a4ab16c0356fb709fc698b720fb487f8b24bc6","abstract_canon_sha256":"e81aa1ce9fc474f55f266a0c477a9f63e95eea962f4d8e580680ed7370b4cd18"},"schema_version":"1.0"},"canonical_sha256":"7dc50804f7858cf89834e90e025da6b94d0cc7144ce3cc91cddf2fbaac833970","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-29T01:24:30.355861Z","signature_b64":"W5Wzc8670M+Q4LCE9nAUbhFS2YOJLlMUTZazoeLxDXLjA5ok6VaKC85dg7ZJJ+QhTKGvao5guOnED9VD+/RgDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"7dc50804f7858cf89834e90e025da6b94d0cc7144ce3cc91cddf2fbaac833970","last_reissued_at":"2026-07-29T01:24:30.354926Z","signature_status":"signed_v1","first_computed_at":"2026-07-29T01:24:30.354926Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2603.02886","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":"2026-07-29T01:24:30Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"fM+1Xnu3U1jFqhNl32pV0HC1zeRHU09cxqjRILTKHczxzBtjx0Tpplh5zg4ykpWVbw0+uP4hw8WIgSA/QKERBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-07T06:21:12.983529Z"},"content_sha256":"fe2dd2b2b837b6c62417ce6b6bb4ac0d2fe54b4344f0f1e89905d3e870f405ac","schema_version":"1.0","event_id":"sha256:fe2dd2b2b837b6c62417ce6b6bb4ac0d2fe54b4344f0f1e89905d3e870f405ac"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2026:PXCQQBHXQWGPRGBU5EHAEXNGXF","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"StegaFFD: Privacy-Preserving Face Forgery Detection via Fine-Grained Steganographic Domain Lifting","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["cs.AI"],"primary_cat":"cs.CV","authors_text":"Ajian Liu, Chenqi Kong, Guoqing Ma, Hui Ma, Shan Yu, Wenzhong Tang, Xun Lin, Yi Yu, Yizhong Liu","submitted_at":"2026-03-03T11:34:57Z","abstract_excerpt":"Most existing Face Forgery Detection (FFD) models assume access to raw face images. In practice, under a client-server framework, private facial data may be intercepted during transmission or leaked by untrusted servers. Previous privacy protection approaches, such as anonymization, encryption, or distortion, partly mitigate leakage but often introduce severe semantic distortion, making images appear obviously protected. This alerts attackers, provoking more aggressive strategies and turning the process into a cat-and-mouse game. Moreover, these methods heavily manipulate image contents, intro"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2603.02886","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/2603.02886/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":"2026-07-29T01:24:30Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Pz+5uOn6uLOY8bPe3v6BrZUx+/wMxBsAvyNmIPzoFhz0/rcQXI3kBt4CDe7FxrELMc+UlJVUKE44gpE4A+FTDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-07T06:21:12.983913Z"},"content_sha256":"92590fdc98669d1dd66254a0d93efad0d03d1d32a5fad7b2e9c3324bd65a2c51","schema_version":"1.0","event_id":"sha256:92590fdc98669d1dd66254a0d93efad0d03d1d32a5fad7b2e9c3324bd65a2c51"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/PXCQQBHXQWGPRGBU5EHAEXNGXF/bundle.json","state_url":"https://pith.science/pith/PXCQQBHXQWGPRGBU5EHAEXNGXF/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/PXCQQBHXQWGPRGBU5EHAEXNGXF/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":"2026-08-07T06:21:12Z","links":{"resolver":"https://pith.science/pith/PXCQQBHXQWGPRGBU5EHAEXNGXF","bundle":"https://pith.science/pith/PXCQQBHXQWGPRGBU5EHAEXNGXF/bundle.json","state":"https://pith.science/pith/PXCQQBHXQWGPRGBU5EHAEXNGXF/state.json","well_known_bundle":"https://pith.science/.well-known/pith/PXCQQBHXQWGPRGBU5EHAEXNGXF/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:PXCQQBHXQWGPRGBU5EHAEXNGXF","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":"e81aa1ce9fc474f55f266a0c477a9f63e95eea962f4d8e580680ed7370b4cd18","cross_cats_sorted":["cs.AI"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.CV","submitted_at":"2026-03-03T11:34:57Z","title_canon_sha256":"a61336d6691b32b79bb6a09cb8a4ab16c0356fb709fc698b720fb487f8b24bc6"},"schema_version":"1.0","source":{"id":"2603.02886","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2603.02886","created_at":"2026-07-29T01:24:30Z"},{"alias_kind":"arxiv_version","alias_value":"2603.02886v1","created_at":"2026-07-29T01:24:30Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2603.02886","created_at":"2026-07-29T01:24:30Z"},{"alias_kind":"pith_short_12","alias_value":"PXCQQBHXQWGP","created_at":"2026-07-29T01:24:30Z"},{"alias_kind":"pith_short_16","alias_value":"PXCQQBHXQWGPRGBU","created_at":"2026-07-29T01:24:30Z"},{"alias_kind":"pith_short_8","alias_value":"PXCQQBHX","created_at":"2026-07-29T01:24:30Z"}],"graph_snapshots":[{"event_id":"sha256:92590fdc98669d1dd66254a0d93efad0d03d1d32a5fad7b2e9c3324bd65a2c51","target":"graph","created_at":"2026-07-29T01:24:30Z","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/2603.02886/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Most existing Face Forgery Detection (FFD) models assume access to raw face images. In practice, under a client-server framework, private facial data may be intercepted during transmission or leaked by untrusted servers. Previous privacy protection approaches, such as anonymization, encryption, or distortion, partly mitigate leakage but often introduce severe semantic distortion, making images appear obviously protected. This alerts attackers, provoking more aggressive strategies and turning the process into a cat-and-mouse game. Moreover, these methods heavily manipulate image contents, intro","authors_text":"Ajian Liu, Chenqi Kong, Guoqing Ma, Hui Ma, Shan Yu, Wenzhong Tang, Xun Lin, Yi Yu, Yizhong Liu","cross_cats":["cs.AI"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.CV","submitted_at":"2026-03-03T11:34:57Z","title":"StegaFFD: Privacy-Preserving Face Forgery Detection via Fine-Grained Steganographic Domain Lifting"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2603.02886","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:fe2dd2b2b837b6c62417ce6b6bb4ac0d2fe54b4344f0f1e89905d3e870f405ac","target":"record","created_at":"2026-07-29T01:24:30Z","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":"e81aa1ce9fc474f55f266a0c477a9f63e95eea962f4d8e580680ed7370b4cd18","cross_cats_sorted":["cs.AI"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.CV","submitted_at":"2026-03-03T11:34:57Z","title_canon_sha256":"a61336d6691b32b79bb6a09cb8a4ab16c0356fb709fc698b720fb487f8b24bc6"},"schema_version":"1.0","source":{"id":"2603.02886","kind":"arxiv","version":1}},"canonical_sha256":"7dc50804f7858cf89834e90e025da6b94d0cc7144ce3cc91cddf2fbaac833970","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"7dc50804f7858cf89834e90e025da6b94d0cc7144ce3cc91cddf2fbaac833970","first_computed_at":"2026-07-29T01:24:30.354926Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-29T01:24:30.354926Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"W5Wzc8670M+Q4LCE9nAUbhFS2YOJLlMUTZazoeLxDXLjA5ok6VaKC85dg7ZJJ+QhTKGvao5guOnED9VD+/RgDA==","signature_status":"signed_v1","signed_at":"2026-07-29T01:24:30.355861Z","signed_message":"canonical_sha256_bytes"},"source_id":"2603.02886","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:fe2dd2b2b837b6c62417ce6b6bb4ac0d2fe54b4344f0f1e89905d3e870f405ac","sha256:92590fdc98669d1dd66254a0d93efad0d03d1d32a5fad7b2e9c3324bd65a2c51"],"state_sha256":"c2ccc86d6afc53b4dabafba52b35e4acf60cd2c4a68a1c85dcf8d914d15c2837"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"npKabc/AEdFDzl3M369xpjn040igPEprkCgsbb3LdHLXoB6D11T/qLa1I2IIUpqe9h5An1MUXnTsVeRc31KrCQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-07T06:21:12.986584Z","bundle_sha256":"d76af08eccac869c9fa6592385a0d6df2435f7f9a1412bc3c173883eaf60e2c5"}}