{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2021:TEZK456KYDLZRLVPJUL7NILSOF","short_pith_number":"pith:TEZK456K","canonical_record":{"source":{"id":"2109.00537","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"eess.AS","submitted_at":"2021-09-01T16:17:31Z","cross_cats_sorted":["cs.CR","cs.LG","cs.SD"],"title_canon_sha256":"47e70ee0be55e2cd37b6d261b4d2644bfb0bab8a190f8db0cc291671ea00faa0","abstract_canon_sha256":"7c28f41a7c463adf1e3c282dc65dbbbc4f58c7f9aea402c15efec3ec5b7e2ebb"},"schema_version":"1.0"},"canonical_sha256":"9932ae77cac0d798aeaf4d17f6a17271754bb8f1f366cabeee970ef1f5a8b0f0","source":{"kind":"arxiv","id":"2109.00537","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2109.00537","created_at":"2026-07-05T03:11:48Z"},{"alias_kind":"arxiv_version","alias_value":"2109.00537v1","created_at":"2026-07-05T03:11:48Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2109.00537","created_at":"2026-07-05T03:11:48Z"},{"alias_kind":"pith_short_12","alias_value":"TEZK456KYDLZ","created_at":"2026-07-05T03:11:48Z"},{"alias_kind":"pith_short_16","alias_value":"TEZK456KYDLZRLVP","created_at":"2026-07-05T03:11:48Z"},{"alias_kind":"pith_short_8","alias_value":"TEZK456K","created_at":"2026-07-05T03:11:48Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2021:TEZK456KYDLZRLVPJUL7NILSOF","target":"record","payload":{"canonical_record":{"source":{"id":"2109.00537","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"eess.AS","submitted_at":"2021-09-01T16:17:31Z","cross_cats_sorted":["cs.CR","cs.LG","cs.SD"],"title_canon_sha256":"47e70ee0be55e2cd37b6d261b4d2644bfb0bab8a190f8db0cc291671ea00faa0","abstract_canon_sha256":"7c28f41a7c463adf1e3c282dc65dbbbc4f58c7f9aea402c15efec3ec5b7e2ebb"},"schema_version":"1.0"},"canonical_sha256":"9932ae77cac0d798aeaf4d17f6a17271754bb8f1f366cabeee970ef1f5a8b0f0","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T03:11:48.848423Z","signature_b64":"PVUdmSxGMmq6pf3XRHssu+peFr/s6SzYnvQjFEDsesQqkCTCECbT/G7JdJxAZBSsGZIVH/QVtvDHBhDrZ5RKAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"9932ae77cac0d798aeaf4d17f6a17271754bb8f1f366cabeee970ef1f5a8b0f0","last_reissued_at":"2026-07-05T03:11:48.847944Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T03:11:48.847944Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2109.00537","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":"2026-07-05T03:11:48Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"pCaLdBE/j4eaPJY/jNOnpoui64zmJzjnOA03ZAezlggh58W8Z4ZrCcoa0++IyJATVqoSwQpbzv4E+xcqO8KXAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-14T18:04:38.215928Z"},"content_sha256":"06afa98a6c4a91f9b1f045263a92d6a0169e97a24fb34939ba566e7cd5d25be6","schema_version":"1.0","event_id":"sha256:06afa98a6c4a91f9b1f045263a92d6a0169e97a24fb34939ba566e7cd5d25be6"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2021:TEZK456KYDLZRLVPJUL7NILSOF","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"ASVspoof 2021: accelerating progress in spoofed and deepfake speech detection","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["cs.CR","cs.LG","cs.SD"],"primary_cat":"eess.AS","authors_text":"Andreas Nautsch, H\\'ector Delgado, Jose Patino, Junichi Yamagishi, Kong Aik Lee, Massimiliano Todisco, Md Sahidullah, Nicholas Evans, Tomi Kinnunen, Xin Wang, Xuechen Liu","submitted_at":"2021-09-01T16:17:31Z","abstract_excerpt":"ASVspoof 2021 is the forth edition in the series of bi-annual challenges which aim to promote the study of spoofing and the design of countermeasures to protect automatic speaker verification systems from manipulation. In addition to a continued focus upon logical and physical access tasks in which there are a number of advances compared to previous editions, ASVspoof 2021 introduces a new task involving deepfake speech detection. This paper describes all three tasks, the new databases for each of them, the evaluation metrics, four challenge baselines, the evaluation platform and a summary of "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2109.00537","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/2109.00537/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":"2026-07-05T03:11:48Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"A4qOSP9Z/aIYeBeksvBEBGn7qkf22SONvrqrJuLc7hjNpHhalUdBzzp/UhF84JBigmwozU3LCLL5IMEG1mF6CQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-14T18:04:38.216526Z"},"content_sha256":"a2df9862db84e707c11f376750a749a0306f4c682a16cea57eb1f1a150107ce7","schema_version":"1.0","event_id":"sha256:a2df9862db84e707c11f376750a749a0306f4c682a16cea57eb1f1a150107ce7"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/TEZK456KYDLZRLVPJUL7NILSOF/bundle.json","state_url":"https://pith.science/pith/TEZK456KYDLZRLVPJUL7NILSOF/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/TEZK456KYDLZRLVPJUL7NILSOF/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":"2026-08-14T18:04:38Z","links":{"resolver":"https://pith.science/pith/TEZK456KYDLZRLVPJUL7NILSOF","bundle":"https://pith.science/pith/TEZK456KYDLZRLVPJUL7NILSOF/bundle.json","state":"https://pith.science/pith/TEZK456KYDLZRLVPJUL7NILSOF/state.json","well_known_bundle":"https://pith.science/.well-known/pith/TEZK456KYDLZRLVPJUL7NILSOF/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2021:TEZK456KYDLZRLVPJUL7NILSOF","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":"7c28f41a7c463adf1e3c282dc65dbbbc4f58c7f9aea402c15efec3ec5b7e2ebb","cross_cats_sorted":["cs.CR","cs.LG","cs.SD"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"eess.AS","submitted_at":"2021-09-01T16:17:31Z","title_canon_sha256":"47e70ee0be55e2cd37b6d261b4d2644bfb0bab8a190f8db0cc291671ea00faa0"},"schema_version":"1.0","source":{"id":"2109.00537","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2109.00537","created_at":"2026-07-05T03:11:48Z"},{"alias_kind":"arxiv_version","alias_value":"2109.00537v1","created_at":"2026-07-05T03:11:48Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2109.00537","created_at":"2026-07-05T03:11:48Z"},{"alias_kind":"pith_short_12","alias_value":"TEZK456KYDLZ","created_at":"2026-07-05T03:11:48Z"},{"alias_kind":"pith_short_16","alias_value":"TEZK456KYDLZRLVP","created_at":"2026-07-05T03:11:48Z"},{"alias_kind":"pith_short_8","alias_value":"TEZK456K","created_at":"2026-07-05T03:11:48Z"}],"graph_snapshots":[{"event_id":"sha256:a2df9862db84e707c11f376750a749a0306f4c682a16cea57eb1f1a150107ce7","target":"graph","created_at":"2026-07-05T03:11:48Z","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/2109.00537/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"ASVspoof 2021 is the forth edition in the series of bi-annual challenges which aim to promote the study of spoofing and the design of countermeasures to protect automatic speaker verification systems from manipulation. In addition to a continued focus upon logical and physical access tasks in which there are a number of advances compared to previous editions, ASVspoof 2021 introduces a new task involving deepfake speech detection. This paper describes all three tasks, the new databases for each of them, the evaluation metrics, four challenge baselines, the evaluation platform and a summary of ","authors_text":"Andreas Nautsch, H\\'ector Delgado, Jose Patino, Junichi Yamagishi, Kong Aik Lee, Massimiliano Todisco, Md Sahidullah, Nicholas Evans, Tomi Kinnunen, Xin Wang, Xuechen Liu","cross_cats":["cs.CR","cs.LG","cs.SD"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"eess.AS","submitted_at":"2021-09-01T16:17:31Z","title":"ASVspoof 2021: accelerating progress in spoofed and deepfake speech detection"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2109.00537","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":"sha256:06afa98a6c4a91f9b1f045263a92d6a0169e97a24fb34939ba566e7cd5d25be6","target":"record","created_at":"2026-07-05T03:11:48Z","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":"7c28f41a7c463adf1e3c282dc65dbbbc4f58c7f9aea402c15efec3ec5b7e2ebb","cross_cats_sorted":["cs.CR","cs.LG","cs.SD"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"eess.AS","submitted_at":"2021-09-01T16:17:31Z","title_canon_sha256":"47e70ee0be55e2cd37b6d261b4d2644bfb0bab8a190f8db0cc291671ea00faa0"},"schema_version":"1.0","source":{"id":"2109.00537","kind":"arxiv","version":1}},"canonical_sha256":"9932ae77cac0d798aeaf4d17f6a17271754bb8f1f366cabeee970ef1f5a8b0f0","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"9932ae77cac0d798aeaf4d17f6a17271754bb8f1f366cabeee970ef1f5a8b0f0","first_computed_at":"2026-07-05T03:11:48.847944Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T03:11:48.847944Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"PVUdmSxGMmq6pf3XRHssu+peFr/s6SzYnvQjFEDsesQqkCTCECbT/G7JdJxAZBSsGZIVH/QVtvDHBhDrZ5RKAA==","signature_status":"signed_v1","signed_at":"2026-07-05T03:11:48.848423Z","signed_message":"canonical_sha256_bytes"},"source_id":"2109.00537","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:06afa98a6c4a91f9b1f045263a92d6a0169e97a24fb34939ba566e7cd5d25be6","sha256:a2df9862db84e707c11f376750a749a0306f4c682a16cea57eb1f1a150107ce7"],"state_sha256":"c551d2b4637fa9a417d85cc1c2fa8782d3306e358022aedc92d106627e2146ef"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"QvLuOsHUs9sLXbfO6mD60O9p5GgZqlzqu1SIMFn4ZBJtgK9Y3Ha54LiTpsW4rNONwhCLcKMgkOuv2RKASfIZDg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-14T18:04:38.248022Z","bundle_sha256":"56ab5c8ab3072561a1e341adb24f31be25b36a45d4ca71d8195a91ea569e692c"}}