{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2026:TAUOSU4LB7O2YQECJQTXXJRTPQ","short_pith_number":"pith:TAUOSU4L","canonical_record":{"source":{"id":"2607.04147","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2026-07-05T07:15:17Z","cross_cats_sorted":["cs.AI"],"title_canon_sha256":"f8ecc3d8db4ee4c0e391c42049d96c87f484bcd2e7d492a38699bb164da5faf7","abstract_canon_sha256":"5c2c18b6362007056a1f0f907924338d2ed66a6e7215e745196987fb2b304e7e"},"schema_version":"1.0"},"canonical_sha256":"9828e9538b0fddac40824c277ba6337c033eefadf7fa4bb35804052b050bcdae","source":{"kind":"arxiv","id":"2607.04147","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2607.04147","created_at":"2026-07-07T02:18:59Z"},{"alias_kind":"arxiv_version","alias_value":"2607.04147v1","created_at":"2026-07-07T02:18:59Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2607.04147","created_at":"2026-07-07T02:18:59Z"},{"alias_kind":"pith_short_12","alias_value":"TAUOSU4LB7O2","created_at":"2026-07-07T02:18:59Z"},{"alias_kind":"pith_short_16","alias_value":"TAUOSU4LB7O2YQEC","created_at":"2026-07-07T02:18:59Z"},{"alias_kind":"pith_short_8","alias_value":"TAUOSU4L","created_at":"2026-07-07T02:18:59Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2026:TAUOSU4LB7O2YQECJQTXXJRTPQ","target":"record","payload":{"canonical_record":{"source":{"id":"2607.04147","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2026-07-05T07:15:17Z","cross_cats_sorted":["cs.AI"],"title_canon_sha256":"f8ecc3d8db4ee4c0e391c42049d96c87f484bcd2e7d492a38699bb164da5faf7","abstract_canon_sha256":"5c2c18b6362007056a1f0f907924338d2ed66a6e7215e745196987fb2b304e7e"},"schema_version":"1.0"},"canonical_sha256":"9828e9538b0fddac40824c277ba6337c033eefadf7fa4bb35804052b050bcdae","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-07T02:18:59.645522Z","signature_b64":"paHkryjacezapb2GEFQvhQW1AaduR7KJmIcRPR8u5yIVF5UcXeZ3+mQnOY0O0hBnL8fhsVX/y+KSZ8x9GxaJDQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"9828e9538b0fddac40824c277ba6337c033eefadf7fa4bb35804052b050bcdae","last_reissued_at":"2026-07-07T02:18:59.644716Z","signature_status":"signed_v1","first_computed_at":"2026-07-07T02:18:59.644716Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2607.04147","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":"2026-07-07T02:18:59Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"uRAwILkwoH7ppGxyCbrccHP7Hx7b93M3wXIP5/wAEcB0ZeNX+W/U+mkkfGxeAozUoIc8G901aq6HFP+ZUtxWCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-23T00:56:19.730686Z"},"content_sha256":"5406809a38bc057d561c2370b00c3df0af1e5c359d1440499c7e3c364a82a991","schema_version":"1.0","event_id":"sha256:5406809a38bc057d561c2370b00c3df0af1e5c359d1440499c7e3c364a82a991"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2026:TAUOSU4LB7O2YQECJQTXXJRTPQ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"HCSU: A Dataset and Benchmark for Fine-Grained Historical Calligraphy Style Understanding","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cs.AI"],"primary_cat":"cs.CV","authors_text":"Chen Ye, Yan Liu, Yinsheng Yao","submitted_at":"2026-07-05T07:15:17Z","abstract_excerpt":"Automated fine-grained perception of calligraphy styles--a task vital to cultural heritage preservation--remains a critical challenge for Large Vision-Language Models (LVLMs), largely constrained by existing datasets that suffer from modal mixture and flattened labels. To bridge this gap, we introduce HCSU, the first comprehensive dataset tailored for fine-grained Historical Calligraphy Style Understanding. HCSU comprises 39,307 meticulously curated character images from 49 historically prominent calligraphers across 10 dynasties, systematically decoupling authentic ink manuscripts (Tie) from "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2607.04147","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/2607.04147/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":"2026-07-07T02:18:59Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"4Sig7ROUeBge8EQmIAPOWbSWv52bsgfIcSfCBy31mwddKkh4sXjU6D34ceTBgUCwKkUdN4RyUE7scE4gneTjAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-23T00:56:19.731063Z"},"content_sha256":"e58ae7fe28d2a781624f98748540af990e4d6b24aeb329f9160d77258cc2e85d","schema_version":"1.0","event_id":"sha256:e58ae7fe28d2a781624f98748540af990e4d6b24aeb329f9160d77258cc2e85d"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/TAUOSU4LB7O2YQECJQTXXJRTPQ/bundle.json","state_url":"https://pith.science/pith/TAUOSU4LB7O2YQECJQTXXJRTPQ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/TAUOSU4LB7O2YQECJQTXXJRTPQ/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":"2026-07-23T00:56:19Z","links":{"resolver":"https://pith.science/pith/TAUOSU4LB7O2YQECJQTXXJRTPQ","bundle":"https://pith.science/pith/TAUOSU4LB7O2YQECJQTXXJRTPQ/bundle.json","state":"https://pith.science/pith/TAUOSU4LB7O2YQECJQTXXJRTPQ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/TAUOSU4LB7O2YQECJQTXXJRTPQ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:TAUOSU4LB7O2YQECJQTXXJRTPQ","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":"5c2c18b6362007056a1f0f907924338d2ed66a6e7215e745196987fb2b304e7e","cross_cats_sorted":["cs.AI"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2026-07-05T07:15:17Z","title_canon_sha256":"f8ecc3d8db4ee4c0e391c42049d96c87f484bcd2e7d492a38699bb164da5faf7"},"schema_version":"1.0","source":{"id":"2607.04147","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2607.04147","created_at":"2026-07-07T02:18:59Z"},{"alias_kind":"arxiv_version","alias_value":"2607.04147v1","created_at":"2026-07-07T02:18:59Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2607.04147","created_at":"2026-07-07T02:18:59Z"},{"alias_kind":"pith_short_12","alias_value":"TAUOSU4LB7O2","created_at":"2026-07-07T02:18:59Z"},{"alias_kind":"pith_short_16","alias_value":"TAUOSU4LB7O2YQEC","created_at":"2026-07-07T02:18:59Z"},{"alias_kind":"pith_short_8","alias_value":"TAUOSU4L","created_at":"2026-07-07T02:18:59Z"}],"graph_snapshots":[{"event_id":"sha256:e58ae7fe28d2a781624f98748540af990e4d6b24aeb329f9160d77258cc2e85d","target":"graph","created_at":"2026-07-07T02:18:59Z","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/2607.04147/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Automated fine-grained perception of calligraphy styles--a task vital to cultural heritage preservation--remains a critical challenge for Large Vision-Language Models (LVLMs), largely constrained by existing datasets that suffer from modal mixture and flattened labels. To bridge this gap, we introduce HCSU, the first comprehensive dataset tailored for fine-grained Historical Calligraphy Style Understanding. HCSU comprises 39,307 meticulously curated character images from 49 historically prominent calligraphers across 10 dynasties, systematically decoupling authentic ink manuscripts (Tie) from ","authors_text":"Chen Ye, Yan Liu, Yinsheng Yao","cross_cats":["cs.AI"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2026-07-05T07:15:17Z","title":"HCSU: A Dataset and Benchmark for Fine-Grained Historical Calligraphy Style Understanding"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2607.04147","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":"sha256:5406809a38bc057d561c2370b00c3df0af1e5c359d1440499c7e3c364a82a991","target":"record","created_at":"2026-07-07T02:18:59Z","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":"5c2c18b6362007056a1f0f907924338d2ed66a6e7215e745196987fb2b304e7e","cross_cats_sorted":["cs.AI"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CV","submitted_at":"2026-07-05T07:15:17Z","title_canon_sha256":"f8ecc3d8db4ee4c0e391c42049d96c87f484bcd2e7d492a38699bb164da5faf7"},"schema_version":"1.0","source":{"id":"2607.04147","kind":"arxiv","version":1}},"canonical_sha256":"9828e9538b0fddac40824c277ba6337c033eefadf7fa4bb35804052b050bcdae","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"9828e9538b0fddac40824c277ba6337c033eefadf7fa4bb35804052b050bcdae","first_computed_at":"2026-07-07T02:18:59.644716Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-07T02:18:59.644716Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"paHkryjacezapb2GEFQvhQW1AaduR7KJmIcRPR8u5yIVF5UcXeZ3+mQnOY0O0hBnL8fhsVX/y+KSZ8x9GxaJDQ==","signature_status":"signed_v1","signed_at":"2026-07-07T02:18:59.645522Z","signed_message":"canonical_sha256_bytes"},"source_id":"2607.04147","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:5406809a38bc057d561c2370b00c3df0af1e5c359d1440499c7e3c364a82a991","sha256:e58ae7fe28d2a781624f98748540af990e4d6b24aeb329f9160d77258cc2e85d"],"state_sha256":"2cbeb71098ece5ee3acd00d564d43152dc865c687b52c3bf83b49412ff95cdb6"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"JDahaX5GBk562YptmVCzkFn8ISfEcUr1qd1D3x4dNSDdX6DU47bX8moi4qgIlzfllHLmcA5yFAqCJA3q8sVkCw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-23T00:56:19.733229Z","bundle_sha256":"f12f028fe17f2aa57bb440eea81547f1cf5983f63f1f32a5c205d20f711aad92"}}