{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2026:3NAYSDVQQZFXUG6NFK6NUSQMTK","short_pith_number":"pith:3NAYSDVQ","canonical_record":{"source":{"id":"2607.27608","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2026-07-30T02:52:42Z","cross_cats_sorted":[],"title_canon_sha256":"911b913b9632a90270bb5c36df56348526d914e9a14f14457a060ede92c5bf77","abstract_canon_sha256":"ba870713e56b4cad903840cec37c3002e75285763be509e56c5af3e5322f2d38"},"schema_version":"1.0"},"canonical_sha256":"db41890eb0864b7a1bcd2abcda4a0c9abda219cf42064a153823f1a0a8496284","source":{"kind":"arxiv","id":"2607.27608","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2607.27608","created_at":"2026-07-31T01:27:22Z"},{"alias_kind":"arxiv_version","alias_value":"2607.27608v1","created_at":"2026-07-31T01:27:22Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2607.27608","created_at":"2026-07-31T01:27:22Z"},{"alias_kind":"pith_short_12","alias_value":"3NAYSDVQQZFX","created_at":"2026-07-31T01:27:22Z"},{"alias_kind":"pith_short_16","alias_value":"3NAYSDVQQZFXUG6N","created_at":"2026-07-31T01:27:22Z"},{"alias_kind":"pith_short_8","alias_value":"3NAYSDVQ","created_at":"2026-07-31T01:27:22Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2026:3NAYSDVQQZFXUG6NFK6NUSQMTK","target":"record","payload":{"canonical_record":{"source":{"id":"2607.27608","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2026-07-30T02:52:42Z","cross_cats_sorted":[],"title_canon_sha256":"911b913b9632a90270bb5c36df56348526d914e9a14f14457a060ede92c5bf77","abstract_canon_sha256":"ba870713e56b4cad903840cec37c3002e75285763be509e56c5af3e5322f2d38"},"schema_version":"1.0"},"canonical_sha256":"db41890eb0864b7a1bcd2abcda4a0c9abda219cf42064a153823f1a0a8496284","receipt":{"kind":"pith_receipt","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"db41890eb0864b7a1bcd2abcda4a0c9abda219cf42064a153823f1a0a8496284","last_reissued_at":"2026-07-31T01:27:22.011774Z","signature_status":"unsigned_v0","first_computed_at":"2026-07-31T01:27:22.011774Z"},"source_kind":"arxiv","source_id":"2607.27608","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":"2026-07-31T01:27:22Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"+OAfZUht5lGfBp6AFfqsk5MC6er4Sjn2GHFyzfpJEQeXeWV7ihtJppCXCn0L5y5mMh1Qt+OV5+BaTwWpFX+sBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-31T16:45:38.122948Z"},"content_sha256":"4d9b3099c83a2ed5a561884fc54e12e71594898e61ad23452dc751358d319c8e","schema_version":"1.0","event_id":"sha256:4d9b3099c83a2ed5a561884fc54e12e71594898e61ad23452dc751358d319c8e"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2026:3NAYSDVQQZFXUG6NFK6NUSQMTK","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Anisotropic Tensile Strength and Fracture Mechanism of $\\theta$-TaN: A Machine-Learning Potential Molecular Dynamics Study","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mtrl-sci","authors_text":"Chenyang Cao, Hongfei Li, Shuo Cao","submitted_at":"2026-07-30T02:52:42Z","abstract_excerpt":"theta-phase tantalum nitride (theta-TaN) combines metallic conductivity with exceptionally high thermal conductivity, making it a potential material for device thermal management and interconnect applications. However, its tensile strength and fracture behavior remain unclear. Here, we investigate the anisotropic tensile response and fracture mechanism of theta-TaN using neuroevolution-potential molecular dynamics simulations. Size-convergence tests show that a 20 nm long model is sufficient for reliable prediction, and the mechanical parameters vary by less than 3.5% over the strain-rate rang"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2607.27608","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/2607.27608/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":"2026-07-31T01:27:22Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"eZ4rTKiVKrPQo5gfcDNcgg1XiXp8/rA2oCP2/dMKT7AqfLLq+1MDFmYw7A1Y41iEGWt9wdBqh5aYvnG6tLJaAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-31T16:45:38.123553Z"},"content_sha256":"bcdfc038eb3832b4351e356b218d0f039814170b640bf8a6ddf464ff004647d7","schema_version":"1.0","event_id":"sha256:bcdfc038eb3832b4351e356b218d0f039814170b640bf8a6ddf464ff004647d7"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/3NAYSDVQQZFXUG6NFK6NUSQMTK/bundle.json","state_url":"https://pith.science/pith/3NAYSDVQQZFXUG6NFK6NUSQMTK/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/3NAYSDVQQZFXUG6NFK6NUSQMTK/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":"2026-07-31T16:45:38Z","links":{"resolver":"https://pith.science/pith/3NAYSDVQQZFXUG6NFK6NUSQMTK","bundle":"https://pith.science/pith/3NAYSDVQQZFXUG6NFK6NUSQMTK/bundle.json","state":"https://pith.science/pith/3NAYSDVQQZFXUG6NFK6NUSQMTK/state.json","well_known_bundle":"https://pith.science/.well-known/pith/3NAYSDVQQZFXUG6NFK6NUSQMTK/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:3NAYSDVQQZFXUG6NFK6NUSQMTK","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":"ba870713e56b4cad903840cec37c3002e75285763be509e56c5af3e5322f2d38","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2026-07-30T02:52:42Z","title_canon_sha256":"911b913b9632a90270bb5c36df56348526d914e9a14f14457a060ede92c5bf77"},"schema_version":"1.0","source":{"id":"2607.27608","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2607.27608","created_at":"2026-07-31T01:27:22Z"},{"alias_kind":"arxiv_version","alias_value":"2607.27608v1","created_at":"2026-07-31T01:27:22Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2607.27608","created_at":"2026-07-31T01:27:22Z"},{"alias_kind":"pith_short_12","alias_value":"3NAYSDVQQZFX","created_at":"2026-07-31T01:27:22Z"},{"alias_kind":"pith_short_16","alias_value":"3NAYSDVQQZFXUG6N","created_at":"2026-07-31T01:27:22Z"},{"alias_kind":"pith_short_8","alias_value":"3NAYSDVQ","created_at":"2026-07-31T01:27:22Z"}],"graph_snapshots":[{"event_id":"sha256:bcdfc038eb3832b4351e356b218d0f039814170b640bf8a6ddf464ff004647d7","target":"graph","created_at":"2026-07-31T01:27:22Z","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/2607.27608/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"theta-phase tantalum nitride (theta-TaN) combines metallic conductivity with exceptionally high thermal conductivity, making it a potential material for device thermal management and interconnect applications. However, its tensile strength and fracture behavior remain unclear. Here, we investigate the anisotropic tensile response and fracture mechanism of theta-TaN using neuroevolution-potential molecular dynamics simulations. Size-convergence tests show that a 20 nm long model is sufficient for reliable prediction, and the mechanical parameters vary by less than 3.5% over the strain-rate rang","authors_text":"Chenyang Cao, Hongfei Li, Shuo Cao","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2026-07-30T02:52:42Z","title":"Anisotropic Tensile Strength and Fracture Mechanism of $\\theta$-TaN: A Machine-Learning Potential Molecular Dynamics Study"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2607.27608","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":"sha256:4d9b3099c83a2ed5a561884fc54e12e71594898e61ad23452dc751358d319c8e","target":"record","created_at":"2026-07-31T01:27:22Z","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":"ba870713e56b4cad903840cec37c3002e75285763be509e56c5af3e5322f2d38","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2026-07-30T02:52:42Z","title_canon_sha256":"911b913b9632a90270bb5c36df56348526d914e9a14f14457a060ede92c5bf77"},"schema_version":"1.0","source":{"id":"2607.27608","kind":"arxiv","version":1}},"canonical_sha256":"db41890eb0864b7a1bcd2abcda4a0c9abda219cf42064a153823f1a0a8496284","receipt":{"builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"db41890eb0864b7a1bcd2abcda4a0c9abda219cf42064a153823f1a0a8496284","first_computed_at":"2026-07-31T01:27:22.011774Z","kind":"pith_receipt","last_reissued_at":"2026-07-31T01:27:22.011774Z","receipt_version":"0.3","signature_status":"unsigned_v0"},"source_id":"2607.27608","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:4d9b3099c83a2ed5a561884fc54e12e71594898e61ad23452dc751358d319c8e","sha256:bcdfc038eb3832b4351e356b218d0f039814170b640bf8a6ddf464ff004647d7"],"state_sha256":"0b8d2d247ad0cd1a05afadab9492609f250c4dfd6839598d0ba4f235cb88a4f0"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"pgJ3hJHOulogKcyzBIgyS+02RC+1UgKobml0a4qxXpgyTleduhuKrB8OW62KkHJ5eNn6ImbYbZ2A7YkxVki2Bw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-31T16:45:38.128073Z","bundle_sha256":"5e5b0d900e95c6dbc59a74c26850bf55c8d604027e47d991ba0e8b1697d3ff68"}}