{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2021:VCDRABDREXUIJEDBKVHXOIN2MW","short_pith_number":"pith:VCDRABDR","canonical_record":{"source":{"id":"2101.00200","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.CV","submitted_at":"2021-01-01T09:00:17Z","cross_cats_sorted":["cs.AI"],"title_canon_sha256":"643de9a34a54676a01b87d45b0bc818c9bc01ca4087bf6a15031ed4840bf7813","abstract_canon_sha256":"e1bd0e4f27467e232163267404158b4d88e801f9f3db9387d7a25730e606adf4"},"schema_version":"1.0"},"canonical_sha256":"a88710047125e8849061554f7721ba65a93b1e3b62810afb0f8307458b93f4db","source":{"kind":"arxiv","id":"2101.00200","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2101.00200","created_at":"2026-07-05T02:24:39Z"},{"alias_kind":"arxiv_version","alias_value":"2101.00200v2","created_at":"2026-07-05T02:24:39Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2101.00200","created_at":"2026-07-05T02:24:39Z"},{"alias_kind":"pith_short_12","alias_value":"VCDRABDREXUI","created_at":"2026-07-05T02:24:39Z"},{"alias_kind":"pith_short_16","alias_value":"VCDRABDREXUIJEDB","created_at":"2026-07-05T02:24:39Z"},{"alias_kind":"pith_short_8","alias_value":"VCDRABDR","created_at":"2026-07-05T02:24:39Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2021:VCDRABDREXUIJEDBKVHXOIN2MW","target":"record","payload":{"canonical_record":{"source":{"id":"2101.00200","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.CV","submitted_at":"2021-01-01T09:00:17Z","cross_cats_sorted":["cs.AI"],"title_canon_sha256":"643de9a34a54676a01b87d45b0bc818c9bc01ca4087bf6a15031ed4840bf7813","abstract_canon_sha256":"e1bd0e4f27467e232163267404158b4d88e801f9f3db9387d7a25730e606adf4"},"schema_version":"1.0"},"canonical_sha256":"a88710047125e8849061554f7721ba65a93b1e3b62810afb0f8307458b93f4db","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T02:24:39.578888Z","signature_b64":"LGfc9/7+dpDMYgpscP5ZB9SAi5TLGwQTUmPeXRcPO9RlDmXFyHwTHEd0J8n4en53BtcDJh9G9fXsZg2Un0DjDQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"a88710047125e8849061554f7721ba65a93b1e3b62810afb0f8307458b93f4db","last_reissued_at":"2026-07-05T02:24:39.578427Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T02:24:39.578427Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2101.00200","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T02:24:39Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"4AOp21u9c8gq7cifG8ZdYtb1YcZKQZvAOh6UogRnVIJd2xLpEu6Fc/5SqxqWaDRuQc8m62EQqvp6XvDQH9GOBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-15T23:21:50.169274Z"},"content_sha256":"35516c6482ea4596b05f45c57fb1cf37e930111c7f958082162f1bc65837ecd5","schema_version":"1.0","event_id":"sha256:35516c6482ea4596b05f45c57fb1cf37e930111c7f958082162f1bc65837ecd5"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2021:VCDRABDREXUIJEDBKVHXOIN2MW","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"More than just an auxiliary loss: Anti-spoofing Backbone Training via Adversarial Pseudo-depth Generation","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["cs.AI"],"primary_cat":"cs.CV","authors_text":"Chang Keun Paik, Naeun Ko, Youngjoon Yoo","submitted_at":"2021-01-01T09:00:17Z","abstract_excerpt":"In this paper, a new method of training pipeline is discussed to achieve significant performance on the task of anti-spoofing with RGB image. We explore and highlight the impact of using pseudo-depth to pre-train a network that will be used as the backbone to the final classifier. While the usage of pseudo-depth for anti-spoofing task is not a new idea on its own, previous endeavours utilize pseudo-depth simply as another medium to extract features for performing prediction, or as part of many auxiliary losses in aiding the training of the main classifier, normalizing the importance of pseudo-"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2101.00200","kind":"arxiv","version":2},"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/2101.00200/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":"2026-07-05T02:24:39Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Q1t2ALgB2Tdh65xYxwIYRMG1RCd39F5UtmB5ZAPKgUUX/5z7ta1V5DbpDyrVIiVOSmI/DM3Rft6m9Pa59RkJCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-15T23:21:50.169681Z"},"content_sha256":"ed284ada6e28da00d2ad06ecefe1ec78e860ddb3bce491f259e8f20d8becb0b6","schema_version":"1.0","event_id":"sha256:ed284ada6e28da00d2ad06ecefe1ec78e860ddb3bce491f259e8f20d8becb0b6"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/VCDRABDREXUIJEDBKVHXOIN2MW/bundle.json","state_url":"https://pith.science/pith/VCDRABDREXUIJEDBKVHXOIN2MW/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/VCDRABDREXUIJEDBKVHXOIN2MW/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":"2026-07-15T23:21:50Z","links":{"resolver":"https://pith.science/pith/VCDRABDREXUIJEDBKVHXOIN2MW","bundle":"https://pith.science/pith/VCDRABDREXUIJEDBKVHXOIN2MW/bundle.json","state":"https://pith.science/pith/VCDRABDREXUIJEDBKVHXOIN2MW/state.json","well_known_bundle":"https://pith.science/.well-known/pith/VCDRABDREXUIJEDBKVHXOIN2MW/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2021:VCDRABDREXUIJEDBKVHXOIN2MW","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":"e1bd0e4f27467e232163267404158b4d88e801f9f3db9387d7a25730e606adf4","cross_cats_sorted":["cs.AI"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.CV","submitted_at":"2021-01-01T09:00:17Z","title_canon_sha256":"643de9a34a54676a01b87d45b0bc818c9bc01ca4087bf6a15031ed4840bf7813"},"schema_version":"1.0","source":{"id":"2101.00200","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2101.00200","created_at":"2026-07-05T02:24:39Z"},{"alias_kind":"arxiv_version","alias_value":"2101.00200v2","created_at":"2026-07-05T02:24:39Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2101.00200","created_at":"2026-07-05T02:24:39Z"},{"alias_kind":"pith_short_12","alias_value":"VCDRABDREXUI","created_at":"2026-07-05T02:24:39Z"},{"alias_kind":"pith_short_16","alias_value":"VCDRABDREXUIJEDB","created_at":"2026-07-05T02:24:39Z"},{"alias_kind":"pith_short_8","alias_value":"VCDRABDR","created_at":"2026-07-05T02:24:39Z"}],"graph_snapshots":[{"event_id":"sha256:ed284ada6e28da00d2ad06ecefe1ec78e860ddb3bce491f259e8f20d8becb0b6","target":"graph","created_at":"2026-07-05T02:24:39Z","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/2101.00200/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"In this paper, a new method of training pipeline is discussed to achieve significant performance on the task of anti-spoofing with RGB image. We explore and highlight the impact of using pseudo-depth to pre-train a network that will be used as the backbone to the final classifier. While the usage of pseudo-depth for anti-spoofing task is not a new idea on its own, previous endeavours utilize pseudo-depth simply as another medium to extract features for performing prediction, or as part of many auxiliary losses in aiding the training of the main classifier, normalizing the importance of pseudo-","authors_text":"Chang Keun Paik, Naeun Ko, Youngjoon Yoo","cross_cats":["cs.AI"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.CV","submitted_at":"2021-01-01T09:00:17Z","title":"More than just an auxiliary loss: Anti-spoofing Backbone Training via Adversarial Pseudo-depth Generation"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2101.00200","kind":"arxiv","version":2},"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":"sha256:35516c6482ea4596b05f45c57fb1cf37e930111c7f958082162f1bc65837ecd5","target":"record","created_at":"2026-07-05T02:24:39Z","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":"e1bd0e4f27467e232163267404158b4d88e801f9f3db9387d7a25730e606adf4","cross_cats_sorted":["cs.AI"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.CV","submitted_at":"2021-01-01T09:00:17Z","title_canon_sha256":"643de9a34a54676a01b87d45b0bc818c9bc01ca4087bf6a15031ed4840bf7813"},"schema_version":"1.0","source":{"id":"2101.00200","kind":"arxiv","version":2}},"canonical_sha256":"a88710047125e8849061554f7721ba65a93b1e3b62810afb0f8307458b93f4db","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"a88710047125e8849061554f7721ba65a93b1e3b62810afb0f8307458b93f4db","first_computed_at":"2026-07-05T02:24:39.578427Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T02:24:39.578427Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"LGfc9/7+dpDMYgpscP5ZB9SAi5TLGwQTUmPeXRcPO9RlDmXFyHwTHEd0J8n4en53BtcDJh9G9fXsZg2Un0DjDQ==","signature_status":"signed_v1","signed_at":"2026-07-05T02:24:39.578888Z","signed_message":"canonical_sha256_bytes"},"source_id":"2101.00200","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:35516c6482ea4596b05f45c57fb1cf37e930111c7f958082162f1bc65837ecd5","sha256:ed284ada6e28da00d2ad06ecefe1ec78e860ddb3bce491f259e8f20d8becb0b6"],"state_sha256":"35fb143b8d50cdbe1b56562513298317da129f2fcf3aa4201015c5f93bf21c7f"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"P0ZTkpqoQ1eWs7XXtKQP+31iGsrdzp9JT45O1IMAye1bCNzE2orrjFp5kHAwknGlJjI5Cv58To9bQ+7ualrtCA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-15T23:21:50.171936Z","bundle_sha256":"2870fb48b297cdf111049758b847a74b2b183e1959c218e05961f8166182dcc3"}}