{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2020:LGHM4XKIL5W6FIGBEAEG6CHUVM","short_pith_number":"pith:LGHM4XKI","canonical_record":{"source":{"id":"2002.09181","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2020-02-21T08:37:16Z","cross_cats_sorted":[],"title_canon_sha256":"02c014a5558ec8581a6dc6be58513172a4151f1671a346468e0dbe91d72887e5","abstract_canon_sha256":"cd6288681a38fea97ea5c278144b6ab6a37ccde71860c54de07e630c9e797191"},"schema_version":"1.0"},"canonical_sha256":"598ece5d485f6de2a0c120086f08f4ab3cb5375ecac95d94fc152aecd9ddfbd0","source":{"kind":"arxiv","id":"2002.09181","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2002.09181","created_at":"2026-07-05T00:42:46Z"},{"alias_kind":"arxiv_version","alias_value":"2002.09181v1","created_at":"2026-07-05T00:42:46Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2002.09181","created_at":"2026-07-05T00:42:46Z"},{"alias_kind":"pith_short_12","alias_value":"LGHM4XKIL5W6","created_at":"2026-07-05T00:42:46Z"},{"alias_kind":"pith_short_16","alias_value":"LGHM4XKIL5W6FIGB","created_at":"2026-07-05T00:42:46Z"},{"alias_kind":"pith_short_8","alias_value":"LGHM4XKI","created_at":"2026-07-05T00:42:46Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2020:LGHM4XKIL5W6FIGBEAEG6CHUVM","target":"record","payload":{"canonical_record":{"source":{"id":"2002.09181","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2020-02-21T08:37:16Z","cross_cats_sorted":[],"title_canon_sha256":"02c014a5558ec8581a6dc6be58513172a4151f1671a346468e0dbe91d72887e5","abstract_canon_sha256":"cd6288681a38fea97ea5c278144b6ab6a37ccde71860c54de07e630c9e797191"},"schema_version":"1.0"},"canonical_sha256":"598ece5d485f6de2a0c120086f08f4ab3cb5375ecac95d94fc152aecd9ddfbd0","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T00:42:46.016569Z","signature_b64":"V8w5DQUhimEFZBhrgJijRxL+ba7t9fBPu+I4m0uGbdixhaaq8x5slfwxn9gJT4XyKpaKi/J/pzJrwQNtnn/iAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"598ece5d485f6de2a0c120086f08f4ab3cb5375ecac95d94fc152aecd9ddfbd0","last_reissued_at":"2026-07-05T00:42:46.016075Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T00:42:46.016075Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2002.09181","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":"2026-07-05T00:42:46Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"SI6EeOrO0Ma2YTE2540Eb7sqpeedhmO/PNfEhXb7Uv+blLJIXtVQWvEDkrLuNNzObs3ltwKdsHmRZ1yTA8G4BQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-09T18:30:15.033004Z"},"content_sha256":"211a2ff5531f729f6e8718eeb5fc8565932a154eda39069ed3c494272155db25","schema_version":"1.0","event_id":"sha256:211a2ff5531f729f6e8718eeb5fc8565932a154eda39069ed3c494272155db25"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2020:LGHM4XKIL5W6FIGBEAEG6CHUVM","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Unsupervised Enhancement of Soft-biometric Privacy with Negative Face Recognition","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cs.CV","authors_text":"Arjan Kuijper, Florian Kirchbuchner, Marco Huber, Naser Damer, Philipp Terh\\\"orst","submitted_at":"2020-02-21T08:37:16Z","abstract_excerpt":"Current research on soft-biometrics showed that privacy-sensitive information can be deduced from biometric templates of an individual. Since for many applications, these templates are expected to be used for recognition purposes only, this raises major privacy issues. Previous works focused on supervised privacy-enhancing solutions that require privacy-sensitive information about individuals and limit their application to the suppression of single and pre-defined attributes. Consequently, they do not take into account attributes that are not considered in the training. In this work, we presen"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2002.09181","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/2002.09181/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":"2026-07-05T00:42:46Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"arVd6Gbcmdbwkl/WcvWh5iHORDLxqpzk9OZfwEHloXX6L9b/cAvvt+/YE7S4QLBfU1ctKt1kSg+wsDh3x74TCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-09T18:30:15.033574Z"},"content_sha256":"9979c4a5e3f12b8e5622fb850342ea69f6ba9fb41e8b7aadd53381ee32e1d0aa","schema_version":"1.0","event_id":"sha256:9979c4a5e3f12b8e5622fb850342ea69f6ba9fb41e8b7aadd53381ee32e1d0aa"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/LGHM4XKIL5W6FIGBEAEG6CHUVM/bundle.json","state_url":"https://pith.science/pith/LGHM4XKIL5W6FIGBEAEG6CHUVM/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/LGHM4XKIL5W6FIGBEAEG6CHUVM/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":"2026-08-09T18:30:15Z","links":{"resolver":"https://pith.science/pith/LGHM4XKIL5W6FIGBEAEG6CHUVM","bundle":"https://pith.science/pith/LGHM4XKIL5W6FIGBEAEG6CHUVM/bundle.json","state":"https://pith.science/pith/LGHM4XKIL5W6FIGBEAEG6CHUVM/state.json","well_known_bundle":"https://pith.science/.well-known/pith/LGHM4XKIL5W6FIGBEAEG6CHUVM/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:LGHM4XKIL5W6FIGBEAEG6CHUVM","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":"cd6288681a38fea97ea5c278144b6ab6a37ccde71860c54de07e630c9e797191","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2020-02-21T08:37:16Z","title_canon_sha256":"02c014a5558ec8581a6dc6be58513172a4151f1671a346468e0dbe91d72887e5"},"schema_version":"1.0","source":{"id":"2002.09181","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2002.09181","created_at":"2026-07-05T00:42:46Z"},{"alias_kind":"arxiv_version","alias_value":"2002.09181v1","created_at":"2026-07-05T00:42:46Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2002.09181","created_at":"2026-07-05T00:42:46Z"},{"alias_kind":"pith_short_12","alias_value":"LGHM4XKIL5W6","created_at":"2026-07-05T00:42:46Z"},{"alias_kind":"pith_short_16","alias_value":"LGHM4XKIL5W6FIGB","created_at":"2026-07-05T00:42:46Z"},{"alias_kind":"pith_short_8","alias_value":"LGHM4XKI","created_at":"2026-07-05T00:42:46Z"}],"graph_snapshots":[{"event_id":"sha256:9979c4a5e3f12b8e5622fb850342ea69f6ba9fb41e8b7aadd53381ee32e1d0aa","target":"graph","created_at":"2026-07-05T00:42:46Z","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/2002.09181/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Current research on soft-biometrics showed that privacy-sensitive information can be deduced from biometric templates of an individual. Since for many applications, these templates are expected to be used for recognition purposes only, this raises major privacy issues. Previous works focused on supervised privacy-enhancing solutions that require privacy-sensitive information about individuals and limit their application to the suppression of single and pre-defined attributes. Consequently, they do not take into account attributes that are not considered in the training. In this work, we presen","authors_text":"Arjan Kuijper, Florian Kirchbuchner, Marco Huber, Naser Damer, Philipp Terh\\\"orst","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2020-02-21T08:37:16Z","title":"Unsupervised Enhancement of Soft-biometric Privacy with Negative Face Recognition"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2002.09181","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":"sha256:211a2ff5531f729f6e8718eeb5fc8565932a154eda39069ed3c494272155db25","target":"record","created_at":"2026-07-05T00:42:46Z","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":"cd6288681a38fea97ea5c278144b6ab6a37ccde71860c54de07e630c9e797191","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2020-02-21T08:37:16Z","title_canon_sha256":"02c014a5558ec8581a6dc6be58513172a4151f1671a346468e0dbe91d72887e5"},"schema_version":"1.0","source":{"id":"2002.09181","kind":"arxiv","version":1}},"canonical_sha256":"598ece5d485f6de2a0c120086f08f4ab3cb5375ecac95d94fc152aecd9ddfbd0","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"598ece5d485f6de2a0c120086f08f4ab3cb5375ecac95d94fc152aecd9ddfbd0","first_computed_at":"2026-07-05T00:42:46.016075Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T00:42:46.016075Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"V8w5DQUhimEFZBhrgJijRxL+ba7t9fBPu+I4m0uGbdixhaaq8x5slfwxn9gJT4XyKpaKi/J/pzJrwQNtnn/iAw==","signature_status":"signed_v1","signed_at":"2026-07-05T00:42:46.016569Z","signed_message":"canonical_sha256_bytes"},"source_id":"2002.09181","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:211a2ff5531f729f6e8718eeb5fc8565932a154eda39069ed3c494272155db25","sha256:9979c4a5e3f12b8e5622fb850342ea69f6ba9fb41e8b7aadd53381ee32e1d0aa"],"state_sha256":"44b98b0fd3eae748f5d9b75ac9501f7a8da63b8284b07cee061257f5ae2a4d3f"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ul0VHYZxLB0zSIm7FPNFPMLE+0hPLq/PFiDX+16/SpuseB3ZTFTLpDFVdD1J77s+7i5KxPgQdB96JOCipui3CA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-09T18:30:15.037375Z","bundle_sha256":"a91654fe5a2349977a216f121d0d1e15da17add4ea02158bba9fe1130f46db6d"}}