{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2026:JVYG2IAEO4G6DMA2BTTMECR6CF","short_pith_number":"pith:JVYG2IAE","canonical_record":{"source":{"id":"2605.27258","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.SD","submitted_at":"2026-05-26T16:36:56Z","cross_cats_sorted":["cs.AI"],"title_canon_sha256":"3223e1fc1047b45657f1ff2f9a272a4a7661e374f859751850adca19a2b75fdf","abstract_canon_sha256":"f1bd9ae14b3c848583bc36eb99e11a4a7799f7e20ac2c399aaf8ec4549b8b044"},"schema_version":"1.0"},"canonical_sha256":"4d706d2004770de1b01a0ce6c20a3e11541a1db0f48e3556b7c108ebb85f155f","source":{"kind":"arxiv","id":"2605.27258","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2605.27258","created_at":"2026-05-27T02:06:08Z"},{"alias_kind":"arxiv_version","alias_value":"2605.27258v1","created_at":"2026-05-27T02:06:08Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2605.27258","created_at":"2026-05-27T02:06:08Z"},{"alias_kind":"pith_short_12","alias_value":"JVYG2IAEO4G6","created_at":"2026-05-27T02:06:08Z"},{"alias_kind":"pith_short_16","alias_value":"JVYG2IAEO4G6DMA2","created_at":"2026-05-27T02:06:08Z"},{"alias_kind":"pith_short_8","alias_value":"JVYG2IAE","created_at":"2026-05-27T02:06:08Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2026:JVYG2IAEO4G6DMA2BTTMECR6CF","target":"record","payload":{"canonical_record":{"source":{"id":"2605.27258","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.SD","submitted_at":"2026-05-26T16:36:56Z","cross_cats_sorted":["cs.AI"],"title_canon_sha256":"3223e1fc1047b45657f1ff2f9a272a4a7661e374f859751850adca19a2b75fdf","abstract_canon_sha256":"f1bd9ae14b3c848583bc36eb99e11a4a7799f7e20ac2c399aaf8ec4549b8b044"},"schema_version":"1.0"},"canonical_sha256":"4d706d2004770de1b01a0ce6c20a3e11541a1db0f48e3556b7c108ebb85f155f","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-27T02:06:08.763663Z","signature_b64":"87C4+swZ58srruV/igp2DR4SOYCyJ4j7hRV5Z3+7X/+45obFs9wxtmco22hPgIewWjWDiqmuIKxI22auDKEuAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"4d706d2004770de1b01a0ce6c20a3e11541a1db0f48e3556b7c108ebb85f155f","last_reissued_at":"2026-05-27T02:06:08.763188Z","signature_status":"signed_v1","first_computed_at":"2026-05-27T02:06:08.763188Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2605.27258","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":"2026-05-27T02:06:08Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Vnfy2NFFYYkRFMW/BViAA75OPSuUWaPsLH4eEt4RwAmxKNmmZ+sefjuwzOi6mq+PEWrxbs4JCpH5M3qt2QtZAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T16:59:17.338955Z"},"content_sha256":"f5c1b07aafedcdd64f958d094ecb7def58542b5a2a7540f54a0214f8be1e596b","schema_version":"1.0","event_id":"sha256:f5c1b07aafedcdd64f958d094ecb7def58542b5a2a7540f54a0214f8be1e596b"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2026:JVYG2IAEO4G6DMA2BTTMECR6CF","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"PilotTTS: A Disciplined Modular Recipe for Competitive Speech Synthesis","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["cs.AI"],"primary_cat":"cs.SD","authors_text":"Bowen Li, Dongrui Li, Jiahui Zhao, Keming Chen, Mingli Jin, Shaotong Guo, Weibo Xiong, Yang Xiang, Yihang Lin, Yue Liu, Yunze Gao, Yuze Zhou, Zeyang Lin, Zhen Wang","submitted_at":"2026-05-26T16:36:56Z","abstract_excerpt":"Building state-of-the-art text-to-speech (TTS) systems typically demands millions of hours of proprietary data and complex multi-stage architectures, creating substantial barriers for resource-constrained research teams. In this report, we present PilotTTS, a lightweight autoregressive TTS system that achieves competitive performance through minimalist architecture and rigorous data engineering. PilotTTS is trained on only 200K hours of data processed entirely with open-source tools. Specifically, our contributions are: (1) a reproducible multi-stage data processing pipeline covering quality a"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2605.27258","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/2605.27258/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":"2026-05-27T02:06:08Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Q28Ou3X4NIAFrJ1jBkzF6mfvSzMHNqSUlK7Ue8xv/c97fDVPKNJXT8tBVrlG1QmiBXJ7AC5/Tz+pL1ZMRI5zDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T16:59:17.339344Z"},"content_sha256":"85f594711124e3a05da1f7403e1de6b137cebfb919127ff47bfb8ee1714ef4b4","schema_version":"1.0","event_id":"sha256:85f594711124e3a05da1f7403e1de6b137cebfb919127ff47bfb8ee1714ef4b4"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/JVYG2IAEO4G6DMA2BTTMECR6CF/bundle.json","state_url":"https://pith.science/pith/JVYG2IAEO4G6DMA2BTTMECR6CF/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/JVYG2IAEO4G6DMA2BTTMECR6CF/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":"2026-06-01T16:59:17Z","links":{"resolver":"https://pith.science/pith/JVYG2IAEO4G6DMA2BTTMECR6CF","bundle":"https://pith.science/pith/JVYG2IAEO4G6DMA2BTTMECR6CF/bundle.json","state":"https://pith.science/pith/JVYG2IAEO4G6DMA2BTTMECR6CF/state.json","well_known_bundle":"https://pith.science/.well-known/pith/JVYG2IAEO4G6DMA2BTTMECR6CF/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:JVYG2IAEO4G6DMA2BTTMECR6CF","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":"f1bd9ae14b3c848583bc36eb99e11a4a7799f7e20ac2c399aaf8ec4549b8b044","cross_cats_sorted":["cs.AI"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.SD","submitted_at":"2026-05-26T16:36:56Z","title_canon_sha256":"3223e1fc1047b45657f1ff2f9a272a4a7661e374f859751850adca19a2b75fdf"},"schema_version":"1.0","source":{"id":"2605.27258","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2605.27258","created_at":"2026-05-27T02:06:08Z"},{"alias_kind":"arxiv_version","alias_value":"2605.27258v1","created_at":"2026-05-27T02:06:08Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2605.27258","created_at":"2026-05-27T02:06:08Z"},{"alias_kind":"pith_short_12","alias_value":"JVYG2IAEO4G6","created_at":"2026-05-27T02:06:08Z"},{"alias_kind":"pith_short_16","alias_value":"JVYG2IAEO4G6DMA2","created_at":"2026-05-27T02:06:08Z"},{"alias_kind":"pith_short_8","alias_value":"JVYG2IAE","created_at":"2026-05-27T02:06:08Z"}],"graph_snapshots":[{"event_id":"sha256:85f594711124e3a05da1f7403e1de6b137cebfb919127ff47bfb8ee1714ef4b4","target":"graph","created_at":"2026-05-27T02:06:08Z","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/2605.27258/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Building state-of-the-art text-to-speech (TTS) systems typically demands millions of hours of proprietary data and complex multi-stage architectures, creating substantial barriers for resource-constrained research teams. In this report, we present PilotTTS, a lightweight autoregressive TTS system that achieves competitive performance through minimalist architecture and rigorous data engineering. PilotTTS is trained on only 200K hours of data processed entirely with open-source tools. Specifically, our contributions are: (1) a reproducible multi-stage data processing pipeline covering quality a","authors_text":"Bowen Li, Dongrui Li, Jiahui Zhao, Keming Chen, Mingli Jin, Shaotong Guo, Weibo Xiong, Yang Xiang, Yihang Lin, Yue Liu, Yunze Gao, Yuze Zhou, Zeyang Lin, Zhen Wang","cross_cats":["cs.AI"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.SD","submitted_at":"2026-05-26T16:36:56Z","title":"PilotTTS: A Disciplined Modular Recipe for Competitive Speech Synthesis"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2605.27258","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:f5c1b07aafedcdd64f958d094ecb7def58542b5a2a7540f54a0214f8be1e596b","target":"record","created_at":"2026-05-27T02:06:08Z","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":"f1bd9ae14b3c848583bc36eb99e11a4a7799f7e20ac2c399aaf8ec4549b8b044","cross_cats_sorted":["cs.AI"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.SD","submitted_at":"2026-05-26T16:36:56Z","title_canon_sha256":"3223e1fc1047b45657f1ff2f9a272a4a7661e374f859751850adca19a2b75fdf"},"schema_version":"1.0","source":{"id":"2605.27258","kind":"arxiv","version":1}},"canonical_sha256":"4d706d2004770de1b01a0ce6c20a3e11541a1db0f48e3556b7c108ebb85f155f","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"4d706d2004770de1b01a0ce6c20a3e11541a1db0f48e3556b7c108ebb85f155f","first_computed_at":"2026-05-27T02:06:08.763188Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-27T02:06:08.763188Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"87C4+swZ58srruV/igp2DR4SOYCyJ4j7hRV5Z3+7X/+45obFs9wxtmco22hPgIewWjWDiqmuIKxI22auDKEuAw==","signature_status":"signed_v1","signed_at":"2026-05-27T02:06:08.763663Z","signed_message":"canonical_sha256_bytes"},"source_id":"2605.27258","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:f5c1b07aafedcdd64f958d094ecb7def58542b5a2a7540f54a0214f8be1e596b","sha256:85f594711124e3a05da1f7403e1de6b137cebfb919127ff47bfb8ee1714ef4b4"],"state_sha256":"e0d945fec3f798d94170b8f258ea50147889000e4e17cae9f311f6d7c27fe96b"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"FH5pMe4Dfwm/ebGs/miseILyqm0ceQUx0GwPdSp6iS5BBsxsHMJsh7ztc2cnSUEGk7jVBmiBVz92GFGjd83ADA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-01T16:59:17.341353Z","bundle_sha256":"0ef70a040fba37d406a5d5cbbd6d674ceaec09db81b754279af4cf4693a45c0f"}}