{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2020:YCSBD3TBUAILKEXUSBA3JX4VYD","short_pith_number":"pith:YCSBD3TB","canonical_record":{"source":{"id":"2005.08337","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2020-05-17T18:46:23Z","cross_cats_sorted":["cs.CR","eess.IV"],"title_canon_sha256":"0ef0fd4c99d18861d2b50d0de46f59465642afb00566dff07ccf674a93f13c55","abstract_canon_sha256":"65d0af71dc747521fa458c1d7cd7fa626d52ccbdb52ae2d18454a70a1130ae34"},"schema_version":"1.0"},"canonical_sha256":"c0a411ee61a010b512f49041b4df95c0f513de66ab397bbc02b97dca97ab520e","source":{"kind":"arxiv","id":"2005.08337","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2005.08337","created_at":"2026-07-05T01:03:30Z"},{"alias_kind":"arxiv_version","alias_value":"2005.08337v1","created_at":"2026-07-05T01:03:30Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2005.08337","created_at":"2026-07-05T01:03:30Z"},{"alias_kind":"pith_short_12","alias_value":"YCSBD3TBUAIL","created_at":"2026-07-05T01:03:30Z"},{"alias_kind":"pith_short_16","alias_value":"YCSBD3TBUAILKEXU","created_at":"2026-07-05T01:03:30Z"},{"alias_kind":"pith_short_8","alias_value":"YCSBD3TB","created_at":"2026-07-05T01:03:30Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2020:YCSBD3TBUAILKEXUSBA3JX4VYD","target":"record","payload":{"canonical_record":{"source":{"id":"2005.08337","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2020-05-17T18:46:23Z","cross_cats_sorted":["cs.CR","eess.IV"],"title_canon_sha256":"0ef0fd4c99d18861d2b50d0de46f59465642afb00566dff07ccf674a93f13c55","abstract_canon_sha256":"65d0af71dc747521fa458c1d7cd7fa626d52ccbdb52ae2d18454a70a1130ae34"},"schema_version":"1.0"},"canonical_sha256":"c0a411ee61a010b512f49041b4df95c0f513de66ab397bbc02b97dca97ab520e","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T01:03:30.463559Z","signature_b64":"v6RFQWGBWlhUJTJ0RCz9IuXAlZ3b+koa9j0hc2e9YeSASmbWbjO7AQUrH7O1LMa6MKKxwtLcILbjxdvgUyleBA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"c0a411ee61a010b512f49041b4df95c0f513de66ab397bbc02b97dca97ab520e","last_reissued_at":"2026-07-05T01:03:30.463070Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T01:03:30.463070Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2005.08337","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":"2026-07-05T01:03:30Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Vbvz4Fz9oL69hyIV4Y31ZI5KZ5hPC0KOi6X1JfYqHYqXwQQt4pYHTEXbzVEDIR4CwdcnlWRcWhbPWDaiMS18BQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-07T10:27:59.186245Z"},"content_sha256":"3a759e1bb926dc1783312ee27cdc415c67820f5772b4a42c6adcf44578acdc5e","schema_version":"1.0","event_id":"sha256:3a759e1bb926dc1783312ee27cdc415c67820f5772b4a42c6adcf44578acdc5e"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2020:YCSBD3TBUAILKEXUSBA3JX4VYD","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"A Survey on Unknown Presentation Attack Detection for Fingerprint","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cs.CR","eess.IV"],"primary_cat":"cs.CV","authors_text":"Ahmed Madhun, Guoqiang Li, Jag Mohan Singh, Raghavendra Ramachandra","submitted_at":"2020-05-17T18:46:23Z","abstract_excerpt":"Fingerprint recognition systems are widely deployed in various real-life applications as they have achieved high accuracy. The widely used applications include border control, automated teller machine (ATM), and attendance monitoring systems. However, these critical systems are prone to spoofing attacks (a.k.a presentation attacks (PA)). PA for fingerprint can be performed by presenting gummy fingers made from different materials such as silicone, gelatine, play-doh, ecoflex, 2D printed paper, 3D printed material, or latex. Biometrics Researchers have developed Presentation Attack Detection (P"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2005.08337","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/2005.08337/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":"2026-07-05T01:03:30Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"i72QvYvYo1XniM2UiiTl550vJXMmAqGEGd7ZhYcXXy8RFxDAyyKvvbZv1WZX5suFFj1s5AMb+a4imxNSuJg4DQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-07T10:27:59.186617Z"},"content_sha256":"6d4c0c0c6307f43737ee81f6887f0496b6f6f6c4ccc609918b92437191c8e188","schema_version":"1.0","event_id":"sha256:6d4c0c0c6307f43737ee81f6887f0496b6f6f6c4ccc609918b92437191c8e188"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/YCSBD3TBUAILKEXUSBA3JX4VYD/bundle.json","state_url":"https://pith.science/pith/YCSBD3TBUAILKEXUSBA3JX4VYD/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/YCSBD3TBUAILKEXUSBA3JX4VYD/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":"2026-07-07T10:27:59Z","links":{"resolver":"https://pith.science/pith/YCSBD3TBUAILKEXUSBA3JX4VYD","bundle":"https://pith.science/pith/YCSBD3TBUAILKEXUSBA3JX4VYD/bundle.json","state":"https://pith.science/pith/YCSBD3TBUAILKEXUSBA3JX4VYD/state.json","well_known_bundle":"https://pith.science/.well-known/pith/YCSBD3TBUAILKEXUSBA3JX4VYD/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:YCSBD3TBUAILKEXUSBA3JX4VYD","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":"65d0af71dc747521fa458c1d7cd7fa626d52ccbdb52ae2d18454a70a1130ae34","cross_cats_sorted":["cs.CR","eess.IV"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2020-05-17T18:46:23Z","title_canon_sha256":"0ef0fd4c99d18861d2b50d0de46f59465642afb00566dff07ccf674a93f13c55"},"schema_version":"1.0","source":{"id":"2005.08337","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2005.08337","created_at":"2026-07-05T01:03:30Z"},{"alias_kind":"arxiv_version","alias_value":"2005.08337v1","created_at":"2026-07-05T01:03:30Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2005.08337","created_at":"2026-07-05T01:03:30Z"},{"alias_kind":"pith_short_12","alias_value":"YCSBD3TBUAIL","created_at":"2026-07-05T01:03:30Z"},{"alias_kind":"pith_short_16","alias_value":"YCSBD3TBUAILKEXU","created_at":"2026-07-05T01:03:30Z"},{"alias_kind":"pith_short_8","alias_value":"YCSBD3TB","created_at":"2026-07-05T01:03:30Z"}],"graph_snapshots":[{"event_id":"sha256:6d4c0c0c6307f43737ee81f6887f0496b6f6f6c4ccc609918b92437191c8e188","target":"graph","created_at":"2026-07-05T01:03:30Z","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/2005.08337/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Fingerprint recognition systems are widely deployed in various real-life applications as they have achieved high accuracy. The widely used applications include border control, automated teller machine (ATM), and attendance monitoring systems. However, these critical systems are prone to spoofing attacks (a.k.a presentation attacks (PA)). PA for fingerprint can be performed by presenting gummy fingers made from different materials such as silicone, gelatine, play-doh, ecoflex, 2D printed paper, 3D printed material, or latex. Biometrics Researchers have developed Presentation Attack Detection (P","authors_text":"Ahmed Madhun, Guoqiang Li, Jag Mohan Singh, Raghavendra Ramachandra","cross_cats":["cs.CR","eess.IV"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2020-05-17T18:46:23Z","title":"A Survey on Unknown Presentation Attack Detection for Fingerprint"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2005.08337","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":"sha256:3a759e1bb926dc1783312ee27cdc415c67820f5772b4a42c6adcf44578acdc5e","target":"record","created_at":"2026-07-05T01:03:30Z","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":"65d0af71dc747521fa458c1d7cd7fa626d52ccbdb52ae2d18454a70a1130ae34","cross_cats_sorted":["cs.CR","eess.IV"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2020-05-17T18:46:23Z","title_canon_sha256":"0ef0fd4c99d18861d2b50d0de46f59465642afb00566dff07ccf674a93f13c55"},"schema_version":"1.0","source":{"id":"2005.08337","kind":"arxiv","version":1}},"canonical_sha256":"c0a411ee61a010b512f49041b4df95c0f513de66ab397bbc02b97dca97ab520e","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"c0a411ee61a010b512f49041b4df95c0f513de66ab397bbc02b97dca97ab520e","first_computed_at":"2026-07-05T01:03:30.463070Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T01:03:30.463070Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"v6RFQWGBWlhUJTJ0RCz9IuXAlZ3b+koa9j0hc2e9YeSASmbWbjO7AQUrH7O1LMa6MKKxwtLcILbjxdvgUyleBA==","signature_status":"signed_v1","signed_at":"2026-07-05T01:03:30.463559Z","signed_message":"canonical_sha256_bytes"},"source_id":"2005.08337","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:3a759e1bb926dc1783312ee27cdc415c67820f5772b4a42c6adcf44578acdc5e","sha256:6d4c0c0c6307f43737ee81f6887f0496b6f6f6c4ccc609918b92437191c8e188"],"state_sha256":"68fab51e38732c44b091323e40c8ba443b4a7e9055893463377c408b34d3f8da"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"W6Egp10X1xAYgYLzFOW43Pb6aevW81PBfizhruChUd+xT1BLj+CBv7QBZM9Hf3DCZKTF1nEIrjF2SMVH/vR7BA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-07T10:27:59.188457Z","bundle_sha256":"57d3eb07d16d2fc9eff19f0a5c0140f16eb19c40566df316567fd54eb624499f"}}