{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2023:HWJ7HEK5A7FIORQ2VR3GJD4YLC","short_pith_number":"pith:HWJ7HEK5","canonical_record":{"source":{"id":"2307.09146","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.CV","submitted_at":"2023-07-18T10:55:54Z","cross_cats_sorted":[],"title_canon_sha256":"580c5873a77d9b7da3ec67e05a1edfa51d98d7e0caa04545efcd7c200307aee5","abstract_canon_sha256":"837adb0a8204c68d489d4b79e17e34b16c76c7806f979df57ff6f5633517f3e3"},"schema_version":"1.0"},"canonical_sha256":"3d93f3915d07ca87461aac76648f98588c85b3be452f20b99231aac0a301cee3","source":{"kind":"arxiv","id":"2307.09146","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2307.09146","created_at":"2026-07-05T06:32:13Z"},{"alias_kind":"arxiv_version","alias_value":"2307.09146v1","created_at":"2026-07-05T06:32:13Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2307.09146","created_at":"2026-07-05T06:32:13Z"},{"alias_kind":"pith_short_12","alias_value":"HWJ7HEK5A7FI","created_at":"2026-07-05T06:32:13Z"},{"alias_kind":"pith_short_16","alias_value":"HWJ7HEK5A7FIORQ2","created_at":"2026-07-05T06:32:13Z"},{"alias_kind":"pith_short_8","alias_value":"HWJ7HEK5","created_at":"2026-07-05T06:32:13Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2023:HWJ7HEK5A7FIORQ2VR3GJD4YLC","target":"record","payload":{"canonical_record":{"source":{"id":"2307.09146","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.CV","submitted_at":"2023-07-18T10:55:54Z","cross_cats_sorted":[],"title_canon_sha256":"580c5873a77d9b7da3ec67e05a1edfa51d98d7e0caa04545efcd7c200307aee5","abstract_canon_sha256":"837adb0a8204c68d489d4b79e17e34b16c76c7806f979df57ff6f5633517f3e3"},"schema_version":"1.0"},"canonical_sha256":"3d93f3915d07ca87461aac76648f98588c85b3be452f20b99231aac0a301cee3","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T06:32:13.042003Z","signature_b64":"5FDwS3Lql4GFIhwmi9OEirnunh5mkXSpEif0rq1qGXD3sRcx8aYkVM0vTPkiDCkhklt9Dwg1vi89Co/PtdkSBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"3d93f3915d07ca87461aac76648f98588c85b3be452f20b99231aac0a301cee3","last_reissued_at":"2026-07-05T06:32:13.041613Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T06:32:13.041613Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2307.09146","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":"2026-07-05T06:32:13Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"GDW3qEQ6QsA+97Ws0OwzsN764Ea6Y7b1BH8aFx4yMJ1PkbQR3WJaDZ/gvnrbnvxX6ulDRLLE9zZM3FIRfp4xDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-06T17:07:58.651493Z"},"content_sha256":"516bcbf2d06f2be386e9fd99c784c232d6ee92c1d8bd41010787031fd3c70d70","schema_version":"1.0","event_id":"sha256:516bcbf2d06f2be386e9fd99c784c232d6ee92c1d8bd41010787031fd3c70d70"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2023:HWJ7HEK5A7FIORQ2VR3GJD4YLC","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"PRO-Face S: Privacy-preserving Reversible Obfuscation of Face Images via Secure Flow","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"cs.CV","authors_text":"Jiaxu Leng, Kai Liang, Lin Yuan, Nannan Wang, Tao Wu, Xiao Pu, Xinbo Gao, Yan Zhang","submitted_at":"2023-07-18T10:55:54Z","abstract_excerpt":"This paper proposes a novel paradigm for facial privacy protection that unifies multiple characteristics including anonymity, diversity, reversibility and security within a single lightweight framework. We name it PRO-Face S, short for Privacy-preserving Reversible Obfuscation of Face images via Secure flow-based model. In the framework, an Invertible Neural Network (INN) is utilized to process the input image along with its pre-obfuscated form, and generate the privacy protected image that visually approximates to the pre-obfuscated one, thus ensuring privacy. The pre-obfuscation applied can "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2307.09146","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/2307.09146/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":"2026-07-05T06:32:13Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"RT0f6pvMMIyWEZB0Gw5TyMx8+neLKbgP7rGc+eLh5/KUgT99Wk2b4B9AmcR5odHTsngora0Hyv00FUo6FKeMAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-06T17:07:58.651825Z"},"content_sha256":"c99ba3a7d6bbc58288aa6ef62cb582e35f501bd6992f1b594f5e0e4a3dbc5208","schema_version":"1.0","event_id":"sha256:c99ba3a7d6bbc58288aa6ef62cb582e35f501bd6992f1b594f5e0e4a3dbc5208"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/HWJ7HEK5A7FIORQ2VR3GJD4YLC/bundle.json","state_url":"https://pith.science/pith/HWJ7HEK5A7FIORQ2VR3GJD4YLC/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/HWJ7HEK5A7FIORQ2VR3GJD4YLC/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":"2026-08-06T17:07:58Z","links":{"resolver":"https://pith.science/pith/HWJ7HEK5A7FIORQ2VR3GJD4YLC","bundle":"https://pith.science/pith/HWJ7HEK5A7FIORQ2VR3GJD4YLC/bundle.json","state":"https://pith.science/pith/HWJ7HEK5A7FIORQ2VR3GJD4YLC/state.json","well_known_bundle":"https://pith.science/.well-known/pith/HWJ7HEK5A7FIORQ2VR3GJD4YLC/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2023:HWJ7HEK5A7FIORQ2VR3GJD4YLC","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":"837adb0a8204c68d489d4b79e17e34b16c76c7806f979df57ff6f5633517f3e3","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.CV","submitted_at":"2023-07-18T10:55:54Z","title_canon_sha256":"580c5873a77d9b7da3ec67e05a1edfa51d98d7e0caa04545efcd7c200307aee5"},"schema_version":"1.0","source":{"id":"2307.09146","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2307.09146","created_at":"2026-07-05T06:32:13Z"},{"alias_kind":"arxiv_version","alias_value":"2307.09146v1","created_at":"2026-07-05T06:32:13Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2307.09146","created_at":"2026-07-05T06:32:13Z"},{"alias_kind":"pith_short_12","alias_value":"HWJ7HEK5A7FI","created_at":"2026-07-05T06:32:13Z"},{"alias_kind":"pith_short_16","alias_value":"HWJ7HEK5A7FIORQ2","created_at":"2026-07-05T06:32:13Z"},{"alias_kind":"pith_short_8","alias_value":"HWJ7HEK5","created_at":"2026-07-05T06:32:13Z"}],"graph_snapshots":[{"event_id":"sha256:c99ba3a7d6bbc58288aa6ef62cb582e35f501bd6992f1b594f5e0e4a3dbc5208","target":"graph","created_at":"2026-07-05T06:32:13Z","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/2307.09146/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"This paper proposes a novel paradigm for facial privacy protection that unifies multiple characteristics including anonymity, diversity, reversibility and security within a single lightweight framework. We name it PRO-Face S, short for Privacy-preserving Reversible Obfuscation of Face images via Secure flow-based model. In the framework, an Invertible Neural Network (INN) is utilized to process the input image along with its pre-obfuscated form, and generate the privacy protected image that visually approximates to the pre-obfuscated one, thus ensuring privacy. The pre-obfuscation applied can ","authors_text":"Jiaxu Leng, Kai Liang, Lin Yuan, Nannan Wang, Tao Wu, Xiao Pu, Xinbo Gao, Yan Zhang","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.CV","submitted_at":"2023-07-18T10:55:54Z","title":"PRO-Face S: Privacy-preserving Reversible Obfuscation of Face Images via Secure Flow"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2307.09146","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":"sha256:516bcbf2d06f2be386e9fd99c784c232d6ee92c1d8bd41010787031fd3c70d70","target":"record","created_at":"2026-07-05T06:32:13Z","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":"837adb0a8204c68d489d4b79e17e34b16c76c7806f979df57ff6f5633517f3e3","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.CV","submitted_at":"2023-07-18T10:55:54Z","title_canon_sha256":"580c5873a77d9b7da3ec67e05a1edfa51d98d7e0caa04545efcd7c200307aee5"},"schema_version":"1.0","source":{"id":"2307.09146","kind":"arxiv","version":1}},"canonical_sha256":"3d93f3915d07ca87461aac76648f98588c85b3be452f20b99231aac0a301cee3","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"3d93f3915d07ca87461aac76648f98588c85b3be452f20b99231aac0a301cee3","first_computed_at":"2026-07-05T06:32:13.041613Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T06:32:13.041613Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"5FDwS3Lql4GFIhwmi9OEirnunh5mkXSpEif0rq1qGXD3sRcx8aYkVM0vTPkiDCkhklt9Dwg1vi89Co/PtdkSBw==","signature_status":"signed_v1","signed_at":"2026-07-05T06:32:13.042003Z","signed_message":"canonical_sha256_bytes"},"source_id":"2307.09146","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:516bcbf2d06f2be386e9fd99c784c232d6ee92c1d8bd41010787031fd3c70d70","sha256:c99ba3a7d6bbc58288aa6ef62cb582e35f501bd6992f1b594f5e0e4a3dbc5208"],"state_sha256":"691741e3798710d92f5390a82e2d6f9ce0083c94e1bafb6dde2cedcf210e8cbf"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Hce+DdFoQ0/nChA3gAlVof1TzZFoRyWavOUrAXmd682h9G0lYq1MKy8QgxdNBfXaxm3sGZ1Ort6bFqUUSFzoDg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-06T17:07:58.657377Z","bundle_sha256":"4f6d339a1cf28fb905013f24a0aa0f43f6386598b0f6bd9dfc2278702f0bc1df"}}