{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2026:ODVR7FJHPNSKONU5XY7IHJC75J","short_pith_number":"pith:ODVR7FJH","canonical_record":{"source":{"id":"2606.01089","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2026-05-31T08:17:09Z","cross_cats_sorted":[],"title_canon_sha256":"132f99d79e3fbc19024d6054ef289d5ee9c834247a616badea22fc34db7a8ccd","abstract_canon_sha256":"8e851571b5a2dc18e4299c0a0e5fcf4d13a8b221ed0761c1a603bdba1143ead1"},"schema_version":"1.0"},"canonical_sha256":"70eb1f95277b64a7369dbe3e83a45fea7de696686bdbe4eb82afabda5322003d","source":{"kind":"arxiv","id":"2606.01089","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2606.01089","created_at":"2026-06-02T01:04:20Z"},{"alias_kind":"arxiv_version","alias_value":"2606.01089v1","created_at":"2026-06-02T01:04:20Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2606.01089","created_at":"2026-06-02T01:04:20Z"},{"alias_kind":"pith_short_12","alias_value":"ODVR7FJHPNSK","created_at":"2026-06-02T01:04:20Z"},{"alias_kind":"pith_short_16","alias_value":"ODVR7FJHPNSKONU5","created_at":"2026-06-02T01:04:20Z"},{"alias_kind":"pith_short_8","alias_value":"ODVR7FJH","created_at":"2026-06-02T01:04:20Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2026:ODVR7FJHPNSKONU5XY7IHJC75J","target":"record","payload":{"canonical_record":{"source":{"id":"2606.01089","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2026-05-31T08:17:09Z","cross_cats_sorted":[],"title_canon_sha256":"132f99d79e3fbc19024d6054ef289d5ee9c834247a616badea22fc34db7a8ccd","abstract_canon_sha256":"8e851571b5a2dc18e4299c0a0e5fcf4d13a8b221ed0761c1a603bdba1143ead1"},"schema_version":"1.0"},"canonical_sha256":"70eb1f95277b64a7369dbe3e83a45fea7de696686bdbe4eb82afabda5322003d","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-06-02T01:04:20.903147Z","signature_b64":"L6pwGWhjKqIWuljmhtrN9VEw3+fPdmIrCw9QjB2gHmMnd5t9BE8V1aUZEJtboJx5BK8w/hWf/3DxSE2rUl7WBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"70eb1f95277b64a7369dbe3e83a45fea7de696686bdbe4eb82afabda5322003d","last_reissued_at":"2026-06-02T01:04:20.902737Z","signature_status":"signed_v1","first_computed_at":"2026-06-02T01:04:20.902737Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2606.01089","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":"2026-06-02T01:04:20Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"twqVY2Xu+mqwniNMQWpLUVBkvwBDPdnE8LcAO7le0DGN4cwPBlhkIcDcatP2H7LTW7tbVZN2w1PKmv55qAXbAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-12T05:20:35.562103Z"},"content_sha256":"88b225c6df2bab006fc385220577938117cc7d370eedfe15abe0ec4ac7e1a8e7","schema_version":"1.0","event_id":"sha256:88b225c6df2bab006fc385220577938117cc7d370eedfe15abe0ec4ac7e1a8e7"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2026:ODVR7FJHPNSKONU5XY7IHJC75J","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"A literature-grounded scientific reasoning framework for defect-engineered TiO$_{2}$ photocatalysts","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mtrl-sci","authors_text":"E. Wierzbicka, F. J. Dominguez-Gutierrez","submitted_at":"2026-05-31T08:17:09Z","abstract_excerpt":"Defect-engineered TiO$_2$ photocatalysts are extensively investigated for photocatalytic hydrogen evolution; however, the highly heterogeneous nature of the literature, including inconsistent descriptors, diverse synthesis protocols, non-uniform activity metrics, and incomplete mechanistic reporting, limits the applicability of conventional machine-learning approaches based solely on statistical regression. Here, we present a literature-grounded large language model (LLM)-assisted scientific reasoning framework for defect-engineered TiO$_2$ photocatalysts integrating curated literature data, m"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2606.01089","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/2606.01089/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":"2026-06-02T01:04:20Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"EtFjB5mUXKKl5LRx7nW+41QAU1BQecZxxvFulmuvJaI2552Zr/CBUEjbF3cbGDgr7C7+/cyFPDyav/2u58HNAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-12T05:20:35.562498Z"},"content_sha256":"6f3afbd74846e3cdea8f8b042a20a2a8818a24272ae942a195c5893b5249e9fd","schema_version":"1.0","event_id":"sha256:6f3afbd74846e3cdea8f8b042a20a2a8818a24272ae942a195c5893b5249e9fd"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/ODVR7FJHPNSKONU5XY7IHJC75J/bundle.json","state_url":"https://pith.science/pith/ODVR7FJHPNSKONU5XY7IHJC75J/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/ODVR7FJHPNSKONU5XY7IHJC75J/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":"2026-06-12T05:20:35Z","links":{"resolver":"https://pith.science/pith/ODVR7FJHPNSKONU5XY7IHJC75J","bundle":"https://pith.science/pith/ODVR7FJHPNSKONU5XY7IHJC75J/bundle.json","state":"https://pith.science/pith/ODVR7FJHPNSKONU5XY7IHJC75J/state.json","well_known_bundle":"https://pith.science/.well-known/pith/ODVR7FJHPNSKONU5XY7IHJC75J/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:ODVR7FJHPNSKONU5XY7IHJC75J","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":"8e851571b5a2dc18e4299c0a0e5fcf4d13a8b221ed0761c1a603bdba1143ead1","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2026-05-31T08:17:09Z","title_canon_sha256":"132f99d79e3fbc19024d6054ef289d5ee9c834247a616badea22fc34db7a8ccd"},"schema_version":"1.0","source":{"id":"2606.01089","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2606.01089","created_at":"2026-06-02T01:04:20Z"},{"alias_kind":"arxiv_version","alias_value":"2606.01089v1","created_at":"2026-06-02T01:04:20Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2606.01089","created_at":"2026-06-02T01:04:20Z"},{"alias_kind":"pith_short_12","alias_value":"ODVR7FJHPNSK","created_at":"2026-06-02T01:04:20Z"},{"alias_kind":"pith_short_16","alias_value":"ODVR7FJHPNSKONU5","created_at":"2026-06-02T01:04:20Z"},{"alias_kind":"pith_short_8","alias_value":"ODVR7FJH","created_at":"2026-06-02T01:04:20Z"}],"graph_snapshots":[{"event_id":"sha256:6f3afbd74846e3cdea8f8b042a20a2a8818a24272ae942a195c5893b5249e9fd","target":"graph","created_at":"2026-06-02T01:04:20Z","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/2606.01089/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Defect-engineered TiO$_2$ photocatalysts are extensively investigated for photocatalytic hydrogen evolution; however, the highly heterogeneous nature of the literature, including inconsistent descriptors, diverse synthesis protocols, non-uniform activity metrics, and incomplete mechanistic reporting, limits the applicability of conventional machine-learning approaches based solely on statistical regression. Here, we present a literature-grounded large language model (LLM)-assisted scientific reasoning framework for defect-engineered TiO$_2$ photocatalysts integrating curated literature data, m","authors_text":"E. Wierzbicka, F. J. Dominguez-Gutierrez","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2026-05-31T08:17:09Z","title":"A literature-grounded scientific reasoning framework for defect-engineered TiO$_{2}$ photocatalysts"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2606.01089","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":"sha256:88b225c6df2bab006fc385220577938117cc7d370eedfe15abe0ec4ac7e1a8e7","target":"record","created_at":"2026-06-02T01:04:20Z","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":"8e851571b5a2dc18e4299c0a0e5fcf4d13a8b221ed0761c1a603bdba1143ead1","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2026-05-31T08:17:09Z","title_canon_sha256":"132f99d79e3fbc19024d6054ef289d5ee9c834247a616badea22fc34db7a8ccd"},"schema_version":"1.0","source":{"id":"2606.01089","kind":"arxiv","version":1}},"canonical_sha256":"70eb1f95277b64a7369dbe3e83a45fea7de696686bdbe4eb82afabda5322003d","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"70eb1f95277b64a7369dbe3e83a45fea7de696686bdbe4eb82afabda5322003d","first_computed_at":"2026-06-02T01:04:20.902737Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-06-02T01:04:20.902737Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"L6pwGWhjKqIWuljmhtrN9VEw3+fPdmIrCw9QjB2gHmMnd5t9BE8V1aUZEJtboJx5BK8w/hWf/3DxSE2rUl7WBw==","signature_status":"signed_v1","signed_at":"2026-06-02T01:04:20.903147Z","signed_message":"canonical_sha256_bytes"},"source_id":"2606.01089","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:88b225c6df2bab006fc385220577938117cc7d370eedfe15abe0ec4ac7e1a8e7","sha256:6f3afbd74846e3cdea8f8b042a20a2a8818a24272ae942a195c5893b5249e9fd"],"state_sha256":"30470a80752ba45bb734e25cdbbba440773eba662e2806d3f857708943e9194c"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"NAGrTG3nwa8xLnz76tro/CWKjt+bIWz/kjbCyXTYu2piKuXPKhcX1lQZEeEf3Lu9XyMUmfFxMJ53b2qIN+kjBg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-12T05:20:35.564626Z","bundle_sha256":"a5b919725960cb59a36d05ec9abd741df6779ed07d6769c9f5305424c9d7c237"}}