{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2026:KC5YMYBDBPXNEMCORC6SXAGMDZ","short_pith_number":"pith:KC5YMYBD","canonical_record":{"source":{"id":"2604.23703","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.HC","submitted_at":"2026-04-26T13:36:45Z","cross_cats_sorted":["cs.AI","cs.CY"],"title_canon_sha256":"5410f4e8844164b75d96c3578a16a418589853ca0e0e079708672f33724cb7f7","abstract_canon_sha256":"3be1924583130e1745d3a70040a166d5a28587cbd050824f1910078765d5dd47"},"schema_version":"1.0"},"canonical_sha256":"50bb8660230beed2304e88bd2b80cc1e675a90047630fdd31486337cf64bdbeb","source":{"kind":"arxiv","id":"2604.23703","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2604.23703","created_at":"2026-05-26T01:02:34Z"},{"alias_kind":"arxiv_version","alias_value":"2604.23703v2","created_at":"2026-05-26T01:02:34Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2604.23703","created_at":"2026-05-26T01:02:34Z"},{"alias_kind":"pith_short_12","alias_value":"KC5YMYBDBPXN","created_at":"2026-05-26T01:02:34Z"},{"alias_kind":"pith_short_16","alias_value":"KC5YMYBDBPXNEMCO","created_at":"2026-05-26T01:02:34Z"},{"alias_kind":"pith_short_8","alias_value":"KC5YMYBD","created_at":"2026-05-26T01:02:34Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2026:KC5YMYBDBPXNEMCORC6SXAGMDZ","target":"record","payload":{"canonical_record":{"source":{"id":"2604.23703","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.HC","submitted_at":"2026-04-26T13:36:45Z","cross_cats_sorted":["cs.AI","cs.CY"],"title_canon_sha256":"5410f4e8844164b75d96c3578a16a418589853ca0e0e079708672f33724cb7f7","abstract_canon_sha256":"3be1924583130e1745d3a70040a166d5a28587cbd050824f1910078765d5dd47"},"schema_version":"1.0"},"canonical_sha256":"50bb8660230beed2304e88bd2b80cc1e675a90047630fdd31486337cf64bdbeb","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-26T01:02:34.366173Z","signature_b64":"6l5MBtq2PqPeAuxxg4xdNatpfp5sJpmrXXbZs9WgS3tuQGQaTNRLcolMzArIrbmrvkRAwYVNUqxIWBpWzfVVBg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"50bb8660230beed2304e88bd2b80cc1e675a90047630fdd31486337cf64bdbeb","last_reissued_at":"2026-05-26T01:02:34.365219Z","signature_status":"signed_v1","first_computed_at":"2026-05-26T01:02:34.365219Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2604.23703","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":"2026-05-26T01:02:34Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"3d20110lzyC2W6P+RB2n4WAIoKxSM2ozHgAQCzn8N9cTCdlrzRLdTJx/WSa4Oph/jNMuI8LbkZekxg5EQ+MHDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-04T18:20:22.603240Z"},"content_sha256":"1e9acbce84363e3031554954d700c38ad1b17e3b6c543e5397a9eefcf7544d54","schema_version":"1.0","event_id":"sha256:1e9acbce84363e3031554954d700c38ad1b17e3b6c543e5397a9eefcf7544d54"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2026:KC5YMYBDBPXNEMCORC6SXAGMDZ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Talking Slide Avatars: Open-Source Multimodal Communication Approach for Teaching","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"An open-source workflow lets instructors turn scripts and portraits into short talking avatars that restore presence and narrative flow to slide-based teaching.","cross_cats":["cs.AI","cs.CY"],"primary_cat":"cs.HC","authors_text":"Xinxing Wu","submitted_at":"2026-04-26T13:36:45Z","abstract_excerpt":"Slide-based teaching is widely used in higher education, yet in online, hybrid, and asynchronous contexts, slides often lose instructor presence, narrative continuity, and expressive framing that help learners connect with course content. Full lecture video can partly restore these qualities, but it is time-consuming to record, revise, and reuse. This study presents a practice-based implementation and analytic reflection of an open-source workflow for creating talking slide avatars. The workflow integrates OpenVoice for text-to-speech and authorized voice-style conversion with Ditto-TalkingHea"},"claims":{"count":4,"items":[{"kind":"strongest_claim","text":"short, transparent, and carefully designed avatars can humanize slide-based instruction while providing a reusable communicative layer for introductions, transitions, reminders, and recaps across online, hybrid, and asynchronous learning environments.","source":"verdict.strongest_claim","status":"machine_extracted","claim_id":"C1","attestation":"unclaimed"},{"kind":"weakest_assumption","text":"The assumption that the integration of OpenVoice and Ditto-TalkingHead produces sufficiently natural and educationally effective talking avatars without requiring extensive technical skill or post-processing from typical instructors.","source":"verdict.weakest_assumption","status":"machine_extracted","claim_id":"C2","attestation":"unclaimed"},{"kind":"one_line_summary","text":"The study documents an open-source pipeline that converts text scripts and portraits into talking-head videos to restore narrative and expressive elements in slide-based online teaching.","source":"verdict.one_line_summary","status":"machine_extracted","claim_id":"C3","attestation":"unclaimed"},{"kind":"headline","text":"An open-source workflow lets instructors turn scripts and portraits into short talking avatars that restore presence and narrative flow to slide-based teaching.","source":"verdict.pith_extraction.headline","status":"machine_extracted","claim_id":"C4","attestation":"unclaimed"}],"snapshot_sha256":"1d6414b91b7edfd9f7bc23a3ed2d145705853b3160ce10618ef94825edef3162"},"source":{"id":"2604.23703","kind":"arxiv","version":2},"verdict":{"id":"1fbaa3a7-9958-4b8f-818b-d0b35ec1daac","model_set":{"reader":"grok-4.3"},"created_at":"2026-05-08T05:33:00.820011Z","strongest_claim":"short, transparent, and carefully designed avatars can humanize slide-based instruction while providing a reusable communicative layer for introductions, transitions, reminders, and recaps across online, hybrid, and asynchronous learning environments.","one_line_summary":"The study documents an open-source pipeline that converts text scripts and portraits into talking-head videos to restore narrative and expressive elements in slide-based online teaching.","pipeline_version":"pith-pipeline@v0.9.0","weakest_assumption":"The assumption that the integration of OpenVoice and Ditto-TalkingHead produces sufficiently natural and educationally effective talking avatars without requiring extensive technical skill or post-processing from typical instructors.","pith_extraction_headline":"An open-source workflow lets instructors turn scripts and portraits into short talking avatars that restore presence and narrative flow to slide-based teaching."},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2604.23703/integrity.json","findings":[],"available":true,"detectors_run":[{"name":"ai_meta_artifact","ran_at":"2026-05-21T08:36:54.616121Z","status":"completed","version":"1.0.0","findings_count":0},{"name":"doi_compliance","ran_at":"2026-05-19T22:53:46.743221Z","status":"completed","version":"1.0.0","findings_count":0}],"snapshot_sha256":"75f29cab50a77eede5e69d62556da0fbc265ddc7c6ec6db67205caf4e7313d46"},"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":"1fbaa3a7-9958-4b8f-818b-d0b35ec1daac"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-26T01:02:34Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"CuX+gt+/g/LRYWMQSyYREiNz5Xwc1Jk96Wr/DUOeHKCIISzTs+JRP426ZqBaoDO5ijRsR8R+h7QDYI2LL38FAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-04T18:20:22.604227Z"},"content_sha256":"bd49571e1ad4a10dc1e85cfa5495bbc54ce0d58010b8f42268ed6b9508ec3b6c","schema_version":"1.0","event_id":"sha256:bd49571e1ad4a10dc1e85cfa5495bbc54ce0d58010b8f42268ed6b9508ec3b6c"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/KC5YMYBDBPXNEMCORC6SXAGMDZ/bundle.json","state_url":"https://pith.science/pith/KC5YMYBDBPXNEMCORC6SXAGMDZ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/KC5YMYBDBPXNEMCORC6SXAGMDZ/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":"2026-06-04T18:20:22Z","links":{"resolver":"https://pith.science/pith/KC5YMYBDBPXNEMCORC6SXAGMDZ","bundle":"https://pith.science/pith/KC5YMYBDBPXNEMCORC6SXAGMDZ/bundle.json","state":"https://pith.science/pith/KC5YMYBDBPXNEMCORC6SXAGMDZ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/KC5YMYBDBPXNEMCORC6SXAGMDZ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:KC5YMYBDBPXNEMCORC6SXAGMDZ","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":"3be1924583130e1745d3a70040a166d5a28587cbd050824f1910078765d5dd47","cross_cats_sorted":["cs.AI","cs.CY"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.HC","submitted_at":"2026-04-26T13:36:45Z","title_canon_sha256":"5410f4e8844164b75d96c3578a16a418589853ca0e0e079708672f33724cb7f7"},"schema_version":"1.0","source":{"id":"2604.23703","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2604.23703","created_at":"2026-05-26T01:02:34Z"},{"alias_kind":"arxiv_version","alias_value":"2604.23703v2","created_at":"2026-05-26T01:02:34Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2604.23703","created_at":"2026-05-26T01:02:34Z"},{"alias_kind":"pith_short_12","alias_value":"KC5YMYBDBPXN","created_at":"2026-05-26T01:02:34Z"},{"alias_kind":"pith_short_16","alias_value":"KC5YMYBDBPXNEMCO","created_at":"2026-05-26T01:02:34Z"},{"alias_kind":"pith_short_8","alias_value":"KC5YMYBD","created_at":"2026-05-26T01:02:34Z"}],"graph_snapshots":[{"event_id":"sha256:bd49571e1ad4a10dc1e85cfa5495bbc54ce0d58010b8f42268ed6b9508ec3b6c","target":"graph","created_at":"2026-05-26T01:02:34Z","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":4,"items":[{"attestation":"unclaimed","claim_id":"C1","kind":"strongest_claim","source":"verdict.strongest_claim","status":"machine_extracted","text":"short, transparent, and carefully designed avatars can humanize slide-based instruction while providing a reusable communicative layer for introductions, transitions, reminders, and recaps across online, hybrid, and asynchronous learning environments."},{"attestation":"unclaimed","claim_id":"C2","kind":"weakest_assumption","source":"verdict.weakest_assumption","status":"machine_extracted","text":"The assumption that the integration of OpenVoice and Ditto-TalkingHead produces sufficiently natural and educationally effective talking avatars without requiring extensive technical skill or post-processing from typical instructors."},{"attestation":"unclaimed","claim_id":"C3","kind":"one_line_summary","source":"verdict.one_line_summary","status":"machine_extracted","text":"The study documents an open-source pipeline that converts text scripts and portraits into talking-head videos to restore narrative and expressive elements in slide-based online teaching."},{"attestation":"unclaimed","claim_id":"C4","kind":"headline","source":"verdict.pith_extraction.headline","status":"machine_extracted","text":"An open-source workflow lets instructors turn scripts and portraits into short talking avatars that restore presence and narrative flow to slide-based teaching."}],"snapshot_sha256":"1d6414b91b7edfd9f7bc23a3ed2d145705853b3160ce10618ef94825edef3162"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"integrity":{"available":true,"clean":true,"detectors_run":[{"findings_count":0,"name":"ai_meta_artifact","ran_at":"2026-05-21T08:36:54.616121Z","status":"completed","version":"1.0.0"},{"findings_count":0,"name":"doi_compliance","ran_at":"2026-05-19T22:53:46.743221Z","status":"completed","version":"1.0.0"}],"endpoint":"/pith/2604.23703/integrity.json","findings":[],"snapshot_sha256":"75f29cab50a77eede5e69d62556da0fbc265ddc7c6ec6db67205caf4e7313d46","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Slide-based teaching is widely used in higher education, yet in online, hybrid, and asynchronous contexts, slides often lose instructor presence, narrative continuity, and expressive framing that help learners connect with course content. Full lecture video can partly restore these qualities, but it is time-consuming to record, revise, and reuse. This study presents a practice-based implementation and analytic reflection of an open-source workflow for creating talking slide avatars. The workflow integrates OpenVoice for text-to-speech and authorized voice-style conversion with Ditto-TalkingHea","authors_text":"Xinxing Wu","cross_cats":["cs.AI","cs.CY"],"headline":"An open-source workflow lets instructors turn scripts and portraits into short talking avatars that restore presence and narrative flow to slide-based teaching.","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.HC","submitted_at":"2026-04-26T13:36:45Z","title":"Talking Slide Avatars: Open-Source Multimodal Communication Approach for Teaching"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2604.23703","kind":"arxiv","version":2},"verdict":{"created_at":"2026-05-08T05:33:00.820011Z","id":"1fbaa3a7-9958-4b8f-818b-d0b35ec1daac","model_set":{"reader":"grok-4.3"},"one_line_summary":"The study documents an open-source pipeline that converts text scripts and portraits into talking-head videos to restore narrative and expressive elements in slide-based online teaching.","pipeline_version":"pith-pipeline@v0.9.0","pith_extraction_headline":"An open-source workflow lets instructors turn scripts and portraits into short talking avatars that restore presence and narrative flow to slide-based teaching.","strongest_claim":"short, transparent, and carefully designed avatars can humanize slide-based instruction while providing a reusable communicative layer for introductions, transitions, reminders, and recaps across online, hybrid, and asynchronous learning environments.","weakest_assumption":"The assumption that the integration of OpenVoice and Ditto-TalkingHead produces sufficiently natural and educationally effective talking avatars without requiring extensive technical skill or post-processing from typical instructors."}},"verdict_id":"1fbaa3a7-9958-4b8f-818b-d0b35ec1daac"}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:1e9acbce84363e3031554954d700c38ad1b17e3b6c543e5397a9eefcf7544d54","target":"record","created_at":"2026-05-26T01:02:34Z","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":"3be1924583130e1745d3a70040a166d5a28587cbd050824f1910078765d5dd47","cross_cats_sorted":["cs.AI","cs.CY"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.HC","submitted_at":"2026-04-26T13:36:45Z","title_canon_sha256":"5410f4e8844164b75d96c3578a16a418589853ca0e0e079708672f33724cb7f7"},"schema_version":"1.0","source":{"id":"2604.23703","kind":"arxiv","version":2}},"canonical_sha256":"50bb8660230beed2304e88bd2b80cc1e675a90047630fdd31486337cf64bdbeb","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"50bb8660230beed2304e88bd2b80cc1e675a90047630fdd31486337cf64bdbeb","first_computed_at":"2026-05-26T01:02:34.365219Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-26T01:02:34.365219Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"6l5MBtq2PqPeAuxxg4xdNatpfp5sJpmrXXbZs9WgS3tuQGQaTNRLcolMzArIrbmrvkRAwYVNUqxIWBpWzfVVBg==","signature_status":"signed_v1","signed_at":"2026-05-26T01:02:34.366173Z","signed_message":"canonical_sha256_bytes"},"source_id":"2604.23703","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:1e9acbce84363e3031554954d700c38ad1b17e3b6c543e5397a9eefcf7544d54","sha256:bd49571e1ad4a10dc1e85cfa5495bbc54ce0d58010b8f42268ed6b9508ec3b6c"],"state_sha256":"3c3413db1c6892314d05c9b56eaa0808e065daa8bc67cd22234b1da77880a7af"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"1vxwtKWTRkSwX3XJbSsiV+hap0PLHfj0SCalapfiYScHM8MY2cS1ZXIoL3atg++LM5VmLgAsGUzkx0Q5ZH40Ag==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-04T18:20:22.607815Z","bundle_sha256":"e1d9538da1ab006723a44863a78027730ed220386bad0ec4422f05df9e7e2c7f"}}