{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2026:PI6ZM4XOYDBXC3H5PXKSARVWN3","short_pith_number":"pith:PI6ZM4XO","canonical_record":{"source":{"id":"2608.00857","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.AS","submitted_at":"2026-08-01T20:32:46Z","cross_cats_sorted":["cs.AI","cs.SD"],"title_canon_sha256":"d15663a39499705091cd60b1ee45be2534543c8e59e6f77168b12eb77feb28fe","abstract_canon_sha256":"356c427c8e52f382e797995816282541199fcffd8a9f14fd306e7969bd18708a"},"schema_version":"1.0"},"canonical_sha256":"7a3d9672eec0c3716cfd7dd52046b66ef6104525b5c59bd95b3fe7bd57205335","source":{"kind":"arxiv","id":"2608.00857","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2608.00857","created_at":"2026-08-04T01:55:16Z"},{"alias_kind":"arxiv_version","alias_value":"2608.00857v1","created_at":"2026-08-04T01:55:16Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2608.00857","created_at":"2026-08-04T01:55:16Z"},{"alias_kind":"pith_short_12","alias_value":"PI6ZM4XOYDBX","created_at":"2026-08-04T01:55:16Z"},{"alias_kind":"pith_short_16","alias_value":"PI6ZM4XOYDBXC3H5","created_at":"2026-08-04T01:55:16Z"},{"alias_kind":"pith_short_8","alias_value":"PI6ZM4XO","created_at":"2026-08-04T01:55:16Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2026:PI6ZM4XOYDBXC3H5PXKSARVWN3","target":"record","payload":{"canonical_record":{"source":{"id":"2608.00857","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.AS","submitted_at":"2026-08-01T20:32:46Z","cross_cats_sorted":["cs.AI","cs.SD"],"title_canon_sha256":"d15663a39499705091cd60b1ee45be2534543c8e59e6f77168b12eb77feb28fe","abstract_canon_sha256":"356c427c8e52f382e797995816282541199fcffd8a9f14fd306e7969bd18708a"},"schema_version":"1.0"},"canonical_sha256":"7a3d9672eec0c3716cfd7dd52046b66ef6104525b5c59bd95b3fe7bd57205335","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-08-04T01:55:16.453405Z","signature_b64":"IjJK9EszzGdJStcWJG5IOCHOLsCl3YRSnjGJBr+EOOJcTh0jm2jqInHRFEeuf3nBl0Z5Bd/kXI9a/jIyhCPkCw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"7a3d9672eec0c3716cfd7dd52046b66ef6104525b5c59bd95b3fe7bd57205335","last_reissued_at":"2026-08-04T01:55:16.451815Z","signature_status":"signed_v1","first_computed_at":"2026-08-04T01:55:16.451815Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2608.00857","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":"2026-08-04T01:55:16Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"VVbfqHmlYvdT+J4zbIjSY+BlM9hLFcADunlZut92SqBfd7txGLHmCBTkc1+sutmdAmleKRY3c2Z2cyMalItTDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-19T19:49:35.411330Z"},"content_sha256":"22182d31628138159ac027b64af7455ab26cf04e8ca9183f6ee458709f870774","schema_version":"1.0","event_id":"sha256:22182d31628138159ac027b64af7455ab26cf04e8ca9183f6ee458709f870774"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2026:PI6ZM4XOYDBXC3H5PXKSARVWN3","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"REIMU: Efficient Heterogeneous Hierarchical Reasoning for SSL-Based Speech Deepfake Detection","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cs.AI","cs.SD"],"primary_cat":"eess.AS","authors_text":"Bingwen Feng, Kwok-Ho Ng, Peiya Li, Tingting Song","submitted_at":"2026-08-01T20:32:46Z","abstract_excerpt":"The increasing realism of speech generated by text-to-speech and voice conversion systems poses growing challenges to media integrity and voice authentication. Self-supervised learning (SSL) has substantially advanced speech deepfake detection, where downstream backbones conventionally process SSL representations through a single forward pass. This work investigates the practical effectiveness of recurrent hierarchical reasoning for this task. We term this controlled study REIMU and systematically compare conventional single-pass backbones, weight-shared recurrence, homogeneous HRM, and hetero"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2608.00857","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/2608.00857/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":"2026-08-04T01:55:16Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"sBtIAWS9zvOWtbnFsYPllxeDR/Xg3xyP0yLNSTHZT6Pf8ovoyYZONlQ+vB/Oulkj6uD8Q7PTDB5D/WFmsWmVBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-19T19:49:35.411904Z"},"content_sha256":"dc088e48397be84d3844e490595f922d91ae1bdd8d0608600e2af8ce9b712249","schema_version":"1.0","event_id":"sha256:dc088e48397be84d3844e490595f922d91ae1bdd8d0608600e2af8ce9b712249"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/PI6ZM4XOYDBXC3H5PXKSARVWN3/bundle.json","state_url":"https://pith.science/pith/PI6ZM4XOYDBXC3H5PXKSARVWN3/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/PI6ZM4XOYDBXC3H5PXKSARVWN3/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":"2026-08-19T19:49:35Z","links":{"resolver":"https://pith.science/pith/PI6ZM4XOYDBXC3H5PXKSARVWN3","bundle":"https://pith.science/pith/PI6ZM4XOYDBXC3H5PXKSARVWN3/bundle.json","state":"https://pith.science/pith/PI6ZM4XOYDBXC3H5PXKSARVWN3/state.json","well_known_bundle":"https://pith.science/.well-known/pith/PI6ZM4XOYDBXC3H5PXKSARVWN3/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:PI6ZM4XOYDBXC3H5PXKSARVWN3","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":"356c427c8e52f382e797995816282541199fcffd8a9f14fd306e7969bd18708a","cross_cats_sorted":["cs.AI","cs.SD"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.AS","submitted_at":"2026-08-01T20:32:46Z","title_canon_sha256":"d15663a39499705091cd60b1ee45be2534543c8e59e6f77168b12eb77feb28fe"},"schema_version":"1.0","source":{"id":"2608.00857","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2608.00857","created_at":"2026-08-04T01:55:16Z"},{"alias_kind":"arxiv_version","alias_value":"2608.00857v1","created_at":"2026-08-04T01:55:16Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2608.00857","created_at":"2026-08-04T01:55:16Z"},{"alias_kind":"pith_short_12","alias_value":"PI6ZM4XOYDBX","created_at":"2026-08-04T01:55:16Z"},{"alias_kind":"pith_short_16","alias_value":"PI6ZM4XOYDBXC3H5","created_at":"2026-08-04T01:55:16Z"},{"alias_kind":"pith_short_8","alias_value":"PI6ZM4XO","created_at":"2026-08-04T01:55:16Z"}],"graph_snapshots":[{"event_id":"sha256:dc088e48397be84d3844e490595f922d91ae1bdd8d0608600e2af8ce9b712249","target":"graph","created_at":"2026-08-04T01:55:16Z","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/2608.00857/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The increasing realism of speech generated by text-to-speech and voice conversion systems poses growing challenges to media integrity and voice authentication. Self-supervised learning (SSL) has substantially advanced speech deepfake detection, where downstream backbones conventionally process SSL representations through a single forward pass. This work investigates the practical effectiveness of recurrent hierarchical reasoning for this task. We term this controlled study REIMU and systematically compare conventional single-pass backbones, weight-shared recurrence, homogeneous HRM, and hetero","authors_text":"Bingwen Feng, Kwok-Ho Ng, Peiya Li, Tingting Song","cross_cats":["cs.AI","cs.SD"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.AS","submitted_at":"2026-08-01T20:32:46Z","title":"REIMU: Efficient Heterogeneous Hierarchical Reasoning for SSL-Based Speech Deepfake Detection"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2608.00857","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":"sha256:22182d31628138159ac027b64af7455ab26cf04e8ca9183f6ee458709f870774","target":"record","created_at":"2026-08-04T01:55:16Z","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":"356c427c8e52f382e797995816282541199fcffd8a9f14fd306e7969bd18708a","cross_cats_sorted":["cs.AI","cs.SD"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.AS","submitted_at":"2026-08-01T20:32:46Z","title_canon_sha256":"d15663a39499705091cd60b1ee45be2534543c8e59e6f77168b12eb77feb28fe"},"schema_version":"1.0","source":{"id":"2608.00857","kind":"arxiv","version":1}},"canonical_sha256":"7a3d9672eec0c3716cfd7dd52046b66ef6104525b5c59bd95b3fe7bd57205335","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"7a3d9672eec0c3716cfd7dd52046b66ef6104525b5c59bd95b3fe7bd57205335","first_computed_at":"2026-08-04T01:55:16.451815Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-08-04T01:55:16.451815Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"IjJK9EszzGdJStcWJG5IOCHOLsCl3YRSnjGJBr+EOOJcTh0jm2jqInHRFEeuf3nBl0Z5Bd/kXI9a/jIyhCPkCw==","signature_status":"signed_v1","signed_at":"2026-08-04T01:55:16.453405Z","signed_message":"canonical_sha256_bytes"},"source_id":"2608.00857","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:22182d31628138159ac027b64af7455ab26cf04e8ca9183f6ee458709f870774","sha256:dc088e48397be84d3844e490595f922d91ae1bdd8d0608600e2af8ce9b712249"],"state_sha256":"66d75e7c701060545785bd6553172a341b518daee21013895f05f9b9dcd7f9a7"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"uRdjHZARsvZN3pGCLh7i7/D5q235+81RJxOn+Gb9eGhP6Ks/kXOdGl2nVMeldc1cWDsKLX1FbyBrsgkqczN+Dg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-19T19:49:35.415600Z","bundle_sha256":"bc4e4ad1c0e665bcfa9a12a5f982756be75f279ae7ec98a20f53fdac8895f022"}}