{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2026:YH6ZX54VVUIKDQH2UHLOSHWUQM","short_pith_number":"pith:YH6ZX54V","canonical_record":{"source":{"id":"2607.11339","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.CV","submitted_at":"2026-07-13T10:00:53Z","cross_cats_sorted":[],"title_canon_sha256":"6ff2931fd1f8678cfe2e23e974bad4367ced3c01ed2a44f9c38a110f88c751b4","abstract_canon_sha256":"e999b4a4eb8efa14f144537d490e782debccf22e8ea31978830b1d50d898ed56"},"schema_version":"1.0"},"canonical_sha256":"c1fd9bf795ad10a1c0faa1d6e91ed4832b9445d092abd4ec1e39ae74a302396d","source":{"kind":"arxiv","id":"2607.11339","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2607.11339","created_at":"2026-07-14T01:22:29Z"},{"alias_kind":"arxiv_version","alias_value":"2607.11339v1","created_at":"2026-07-14T01:22:29Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2607.11339","created_at":"2026-07-14T01:22:29Z"},{"alias_kind":"pith_short_12","alias_value":"YH6ZX54VVUIK","created_at":"2026-07-14T01:22:29Z"},{"alias_kind":"pith_short_16","alias_value":"YH6ZX54VVUIKDQH2","created_at":"2026-07-14T01:22:29Z"},{"alias_kind":"pith_short_8","alias_value":"YH6ZX54V","created_at":"2026-07-14T01:22:29Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2026:YH6ZX54VVUIKDQH2UHLOSHWUQM","target":"record","payload":{"canonical_record":{"source":{"id":"2607.11339","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.CV","submitted_at":"2026-07-13T10:00:53Z","cross_cats_sorted":[],"title_canon_sha256":"6ff2931fd1f8678cfe2e23e974bad4367ced3c01ed2a44f9c38a110f88c751b4","abstract_canon_sha256":"e999b4a4eb8efa14f144537d490e782debccf22e8ea31978830b1d50d898ed56"},"schema_version":"1.0"},"canonical_sha256":"c1fd9bf795ad10a1c0faa1d6e91ed4832b9445d092abd4ec1e39ae74a302396d","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-14T01:22:29.880342Z","signature_b64":"AJCCjqHLGWJjTVNGswdHKMv3CNJ/eRUHGEgJARHAXOG7t3BUhG2V7WDbgn0C9n8geUjo3cota7jCHBj4K2IMCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"c1fd9bf795ad10a1c0faa1d6e91ed4832b9445d092abd4ec1e39ae74a302396d","last_reissued_at":"2026-07-14T01:22:29.879401Z","signature_status":"signed_v1","first_computed_at":"2026-07-14T01:22:29.879401Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2607.11339","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":"2026-07-14T01:22:29Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Mc+uZPZF93Q5TnZRk4Om/6AL2Q80lSfxCbXR0LOgEFil1y2zTRobdMusBohUOg4dj1IkcVBa0Txsp+FDXbzYAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-06T02:46:32.236190Z"},"content_sha256":"f1ae87ffbb750ce2275af423df255480a011a218a6abe0aa11614de5995b4030","schema_version":"1.0","event_id":"sha256:f1ae87ffbb750ce2275af423df255480a011a218a6abe0aa11614de5995b4030"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2026:YH6ZX54VVUIKDQH2UHLOSHWUQM","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"HierCAD: Hierarchical Text-to-CAD Design via Structure Alignment and Parameter Grounding","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"cs.CV","authors_text":"Jimin Xu, Tao Jin, Tianbao Wang, Zhou Zhao","submitted_at":"2026-07-13T10:00:53Z","abstract_excerpt":"Recent text-to-CAD approaches have shown promising results by leveraging large language models, but they often struggle with maintaining structural consistency in complex designs and accurately grounding geometric parameters. To address these issues, we propose HierCAD, a hierarchical text-to-CAD framework that improves both structural reasoning and parameter prediction. HierCAD reformulates CAD generation as progressive reasoning by decomposing CAD construction trees into object-level procedural reasoning and part-level topology reasoning trajectories. To further improve generation fidelity, "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2607.11339","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/2607.11339/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":"2026-07-14T01:22:29Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"8Mw9SGuPVs87+7J5Dz3tKLPw97ry/dTvq+xcOC0oYTbZKPHCzSjB2HdNkN37y6AjTV2OpJVAJfq3YK3yhvsyCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-06T02:46:32.237208Z"},"content_sha256":"9a8bcb675e50fd1a49f39416d1fd49aa64b69f8b0e323e0abf770fcd72780266","schema_version":"1.0","event_id":"sha256:9a8bcb675e50fd1a49f39416d1fd49aa64b69f8b0e323e0abf770fcd72780266"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/YH6ZX54VVUIKDQH2UHLOSHWUQM/bundle.json","state_url":"https://pith.science/pith/YH6ZX54VVUIKDQH2UHLOSHWUQM/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/YH6ZX54VVUIKDQH2UHLOSHWUQM/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":"2026-08-06T02:46:32Z","links":{"resolver":"https://pith.science/pith/YH6ZX54VVUIKDQH2UHLOSHWUQM","bundle":"https://pith.science/pith/YH6ZX54VVUIKDQH2UHLOSHWUQM/bundle.json","state":"https://pith.science/pith/YH6ZX54VVUIKDQH2UHLOSHWUQM/state.json","well_known_bundle":"https://pith.science/.well-known/pith/YH6ZX54VVUIKDQH2UHLOSHWUQM/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:YH6ZX54VVUIKDQH2UHLOSHWUQM","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":"e999b4a4eb8efa14f144537d490e782debccf22e8ea31978830b1d50d898ed56","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.CV","submitted_at":"2026-07-13T10:00:53Z","title_canon_sha256":"6ff2931fd1f8678cfe2e23e974bad4367ced3c01ed2a44f9c38a110f88c751b4"},"schema_version":"1.0","source":{"id":"2607.11339","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2607.11339","created_at":"2026-07-14T01:22:29Z"},{"alias_kind":"arxiv_version","alias_value":"2607.11339v1","created_at":"2026-07-14T01:22:29Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2607.11339","created_at":"2026-07-14T01:22:29Z"},{"alias_kind":"pith_short_12","alias_value":"YH6ZX54VVUIK","created_at":"2026-07-14T01:22:29Z"},{"alias_kind":"pith_short_16","alias_value":"YH6ZX54VVUIKDQH2","created_at":"2026-07-14T01:22:29Z"},{"alias_kind":"pith_short_8","alias_value":"YH6ZX54V","created_at":"2026-07-14T01:22:29Z"}],"graph_snapshots":[{"event_id":"sha256:9a8bcb675e50fd1a49f39416d1fd49aa64b69f8b0e323e0abf770fcd72780266","target":"graph","created_at":"2026-07-14T01:22:29Z","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/2607.11339/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Recent text-to-CAD approaches have shown promising results by leveraging large language models, but they often struggle with maintaining structural consistency in complex designs and accurately grounding geometric parameters. To address these issues, we propose HierCAD, a hierarchical text-to-CAD framework that improves both structural reasoning and parameter prediction. HierCAD reformulates CAD generation as progressive reasoning by decomposing CAD construction trees into object-level procedural reasoning and part-level topology reasoning trajectories. To further improve generation fidelity, ","authors_text":"Jimin Xu, Tao Jin, Tianbao Wang, Zhou Zhao","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.CV","submitted_at":"2026-07-13T10:00:53Z","title":"HierCAD: Hierarchical Text-to-CAD Design via Structure Alignment and Parameter Grounding"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2607.11339","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:f1ae87ffbb750ce2275af423df255480a011a218a6abe0aa11614de5995b4030","target":"record","created_at":"2026-07-14T01:22:29Z","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":"e999b4a4eb8efa14f144537d490e782debccf22e8ea31978830b1d50d898ed56","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.CV","submitted_at":"2026-07-13T10:00:53Z","title_canon_sha256":"6ff2931fd1f8678cfe2e23e974bad4367ced3c01ed2a44f9c38a110f88c751b4"},"schema_version":"1.0","source":{"id":"2607.11339","kind":"arxiv","version":1}},"canonical_sha256":"c1fd9bf795ad10a1c0faa1d6e91ed4832b9445d092abd4ec1e39ae74a302396d","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"c1fd9bf795ad10a1c0faa1d6e91ed4832b9445d092abd4ec1e39ae74a302396d","first_computed_at":"2026-07-14T01:22:29.879401Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-14T01:22:29.879401Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"AJCCjqHLGWJjTVNGswdHKMv3CNJ/eRUHGEgJARHAXOG7t3BUhG2V7WDbgn0C9n8geUjo3cota7jCHBj4K2IMCg==","signature_status":"signed_v1","signed_at":"2026-07-14T01:22:29.880342Z","signed_message":"canonical_sha256_bytes"},"source_id":"2607.11339","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:f1ae87ffbb750ce2275af423df255480a011a218a6abe0aa11614de5995b4030","sha256:9a8bcb675e50fd1a49f39416d1fd49aa64b69f8b0e323e0abf770fcd72780266"],"state_sha256":"fff327d5e3467251fd207cca623baf575f1e664ce7d8e569bfc883f8fd6b64ec"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"e9g6wH51jEkoeGlWKDonYEMJPeye80ofX79gsd+e9nf5zGhOttl6J2nLQjueBR/W1Gd5q0+Qm66ikY08bGSjDw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-06T02:46:32.287915Z","bundle_sha256":"174f48fa7b123e4b423d5890d9077bc1ec55eb341a6384942aeb45688615fb43"}}