{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:2INIAEHQOPIL54736I6M5X6KP7","short_pith_number":"pith:2INIAEHQ","canonical_record":{"source":{"id":"1804.04262","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.AS","submitted_at":"2018-04-12T00:14:10Z","cross_cats_sorted":["cs.CL","cs.SD","stat.ML"],"title_canon_sha256":"becc4c93fa662fafe63e4f7e89dcbbfe41f7f2c72732671d408cf3aaf8a7cc4c","abstract_canon_sha256":"36393162d04f69e2ea725fe1dd63b9a6fd6e197318e4a3d9b924210064834c98"},"schema_version":"1.0"},"canonical_sha256":"d21a8010f073d0bef3fbf23ccedfca7fe8e4085f0b265722ee26fd23a053b731","source":{"kind":"arxiv","id":"1804.04262","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1804.04262","created_at":"2026-05-18T00:18:40Z"},{"alias_kind":"arxiv_version","alias_value":"1804.04262v1","created_at":"2026-05-18T00:18:40Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1804.04262","created_at":"2026-05-18T00:18:40Z"},{"alias_kind":"pith_short_12","alias_value":"2INIAEHQOPIL","created_at":"2026-05-18T12:32:02Z"},{"alias_kind":"pith_short_16","alias_value":"2INIAEHQOPIL5473","created_at":"2026-05-18T12:32:02Z"},{"alias_kind":"pith_short_8","alias_value":"2INIAEHQ","created_at":"2026-05-18T12:32:02Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:2INIAEHQOPIL54736I6M5X6KP7","target":"record","payload":{"canonical_record":{"source":{"id":"1804.04262","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.AS","submitted_at":"2018-04-12T00:14:10Z","cross_cats_sorted":["cs.CL","cs.SD","stat.ML"],"title_canon_sha256":"becc4c93fa662fafe63e4f7e89dcbbfe41f7f2c72732671d408cf3aaf8a7cc4c","abstract_canon_sha256":"36393162d04f69e2ea725fe1dd63b9a6fd6e197318e4a3d9b924210064834c98"},"schema_version":"1.0"},"canonical_sha256":"d21a8010f073d0bef3fbf23ccedfca7fe8e4085f0b265722ee26fd23a053b731","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:18:40.153564Z","signature_b64":"3pE+U9ioJzYuQ2BpM0A74b+LSRQrqkA7ta5sNIr81vqvhEZ49/nNdkjsGWZd7DyM5tP+cx2fSaJJZHDUF6yhAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d21a8010f073d0bef3fbf23ccedfca7fe8e4085f0b265722ee26fd23a053b731","last_reissued_at":"2026-05-18T00:18:40.152805Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:18:40.152805Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1804.04262","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":"2026-05-18T00:18:40Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"QDongQmYaYQH8aYzY4fxEFGOiWkWuew/izgYsX3/5RudDZSbb3OotQ1Tb9g9yZpg/ljqN4MRM0p+IFKFmYuuBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T09:48:14.494143Z"},"content_sha256":"aaad90c63fd2f232d4aa46501e3cd987aee4059551378578db3b9eb77ff92550","schema_version":"1.0","event_id":"sha256:aaad90c63fd2f232d4aa46501e3cd987aee4059551378578db3b9eb77ff92550"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:2INIAEHQOPIL54736I6M5X6KP7","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The Voice Conversion Challenge 2018: Promoting Development of Parallel and Nonparallel Methods","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cs.CL","cs.SD","stat.ML"],"primary_cat":"eess.AS","authors_text":"Daisuke Saito, Fernando Villavicencio, Jaime Lorenzo-Trueba, Junichi Yamagishi, Tomi Kinnunen, Tomoki Toda, Zhenhua Ling","submitted_at":"2018-04-12T00:14:10Z","abstract_excerpt":"We present the Voice Conversion Challenge 2018, designed as a follow up to the 2016 edition with the aim of providing a common framework for evaluating and comparing different state-of-the-art voice conversion (VC) systems. The objective of the challenge was to perform speaker conversion (i.e. transform the vocal identity) of a source speaker to a target speaker while maintaining linguistic information. As an update to the previous challenge, we considered both parallel and non-parallel data to form the Hub and Spoke tasks, respectively. A total of 23 teams from around the world submitted thei"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1804.04262","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":""},"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":"2026-05-18T00:18:40Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"hici0ZsTBf88eMPDO49Yz5CSQdNF/GLE2XILJwAzvAtKjNOgKtONU6yGFfBtK4KPJM0TFrgzcDYz6+2Syd/nCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T09:48:14.494860Z"},"content_sha256":"39447163f4576d3294c497b2afadd5802cb017eef42b6e731d51e4fa5ef530a1","schema_version":"1.0","event_id":"sha256:39447163f4576d3294c497b2afadd5802cb017eef42b6e731d51e4fa5ef530a1"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/2INIAEHQOPIL54736I6M5X6KP7/bundle.json","state_url":"https://pith.science/pith/2INIAEHQOPIL54736I6M5X6KP7/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/2INIAEHQOPIL54736I6M5X6KP7/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":"2026-05-26T09:48:14Z","links":{"resolver":"https://pith.science/pith/2INIAEHQOPIL54736I6M5X6KP7","bundle":"https://pith.science/pith/2INIAEHQOPIL54736I6M5X6KP7/bundle.json","state":"https://pith.science/pith/2INIAEHQOPIL54736I6M5X6KP7/state.json","well_known_bundle":"https://pith.science/.well-known/pith/2INIAEHQOPIL54736I6M5X6KP7/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:2INIAEHQOPIL54736I6M5X6KP7","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":"36393162d04f69e2ea725fe1dd63b9a6fd6e197318e4a3d9b924210064834c98","cross_cats_sorted":["cs.CL","cs.SD","stat.ML"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.AS","submitted_at":"2018-04-12T00:14:10Z","title_canon_sha256":"becc4c93fa662fafe63e4f7e89dcbbfe41f7f2c72732671d408cf3aaf8a7cc4c"},"schema_version":"1.0","source":{"id":"1804.04262","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1804.04262","created_at":"2026-05-18T00:18:40Z"},{"alias_kind":"arxiv_version","alias_value":"1804.04262v1","created_at":"2026-05-18T00:18:40Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1804.04262","created_at":"2026-05-18T00:18:40Z"},{"alias_kind":"pith_short_12","alias_value":"2INIAEHQOPIL","created_at":"2026-05-18T12:32:02Z"},{"alias_kind":"pith_short_16","alias_value":"2INIAEHQOPIL5473","created_at":"2026-05-18T12:32:02Z"},{"alias_kind":"pith_short_8","alias_value":"2INIAEHQ","created_at":"2026-05-18T12:32:02Z"}],"graph_snapshots":[{"event_id":"sha256:39447163f4576d3294c497b2afadd5802cb017eef42b6e731d51e4fa5ef530a1","target":"graph","created_at":"2026-05-18T00:18:40Z","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"},"paper":{"abstract_excerpt":"We present the Voice Conversion Challenge 2018, designed as a follow up to the 2016 edition with the aim of providing a common framework for evaluating and comparing different state-of-the-art voice conversion (VC) systems. The objective of the challenge was to perform speaker conversion (i.e. transform the vocal identity) of a source speaker to a target speaker while maintaining linguistic information. As an update to the previous challenge, we considered both parallel and non-parallel data to form the Hub and Spoke tasks, respectively. A total of 23 teams from around the world submitted thei","authors_text":"Daisuke Saito, Fernando Villavicencio, Jaime Lorenzo-Trueba, Junichi Yamagishi, Tomi Kinnunen, Tomoki Toda, Zhenhua Ling","cross_cats":["cs.CL","cs.SD","stat.ML"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.AS","submitted_at":"2018-04-12T00:14:10Z","title":"The Voice Conversion Challenge 2018: Promoting Development of Parallel and Nonparallel Methods"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1804.04262","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:aaad90c63fd2f232d4aa46501e3cd987aee4059551378578db3b9eb77ff92550","target":"record","created_at":"2026-05-18T00:18:40Z","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":"36393162d04f69e2ea725fe1dd63b9a6fd6e197318e4a3d9b924210064834c98","cross_cats_sorted":["cs.CL","cs.SD","stat.ML"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.AS","submitted_at":"2018-04-12T00:14:10Z","title_canon_sha256":"becc4c93fa662fafe63e4f7e89dcbbfe41f7f2c72732671d408cf3aaf8a7cc4c"},"schema_version":"1.0","source":{"id":"1804.04262","kind":"arxiv","version":1}},"canonical_sha256":"d21a8010f073d0bef3fbf23ccedfca7fe8e4085f0b265722ee26fd23a053b731","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"d21a8010f073d0bef3fbf23ccedfca7fe8e4085f0b265722ee26fd23a053b731","first_computed_at":"2026-05-18T00:18:40.152805Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:18:40.152805Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"3pE+U9ioJzYuQ2BpM0A74b+LSRQrqkA7ta5sNIr81vqvhEZ49/nNdkjsGWZd7DyM5tP+cx2fSaJJZHDUF6yhAg==","signature_status":"signed_v1","signed_at":"2026-05-18T00:18:40.153564Z","signed_message":"canonical_sha256_bytes"},"source_id":"1804.04262","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:aaad90c63fd2f232d4aa46501e3cd987aee4059551378578db3b9eb77ff92550","sha256:39447163f4576d3294c497b2afadd5802cb017eef42b6e731d51e4fa5ef530a1"],"state_sha256":"887162e7ca43197056fe25a9489f3470a068bca36a9af594dc90e9cf499e609d"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"WsLyVxZVrXrziw8nX355XaySV0l+QdtEA1vr31dkHkxPirl/Nw88RiUoXZ4lCSJOHHTDkqQUzg3DmZCtZVxbCg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-26T09:48:14.498299Z","bundle_sha256":"f40f32f8753dfdc1da5979fd96604454bafdfa36d52594fca3b04c28ef1d93f8"}}