{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2016:YH4BDEAOJ7ARYIC4LVVFQU5WN7","short_pith_number":"pith:YH4BDEAO","canonical_record":{"source":{"id":"1607.08624","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2016-07-28T20:12:05Z","cross_cats_sorted":[],"title_canon_sha256":"9e8a5fbdd5b08f9956c15800f4ec16e267fc2fefd43da04b6fde86c83afc3a5f","abstract_canon_sha256":"c14da4bf21ebde1c2b2285858227523074832b8997bc4f479748788e754abadd"},"schema_version":"1.0"},"canonical_sha256":"c1f811900e4fc11c205c5d6a5853b66fdf03391e212d83d627a694ccd737ef77","source":{"kind":"arxiv","id":"1607.08624","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1607.08624","created_at":"2026-05-18T00:50:19Z"},{"alias_kind":"arxiv_version","alias_value":"1607.08624v2","created_at":"2026-05-18T00:50:19Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1607.08624","created_at":"2026-05-18T00:50:19Z"},{"alias_kind":"pith_short_12","alias_value":"YH4BDEAOJ7AR","created_at":"2026-05-18T12:30:53Z"},{"alias_kind":"pith_short_16","alias_value":"YH4BDEAOJ7ARYIC4","created_at":"2026-05-18T12:30:53Z"},{"alias_kind":"pith_short_8","alias_value":"YH4BDEAO","created_at":"2026-05-18T12:30:53Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2016:YH4BDEAOJ7ARYIC4LVVFQU5WN7","target":"record","payload":{"canonical_record":{"source":{"id":"1607.08624","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2016-07-28T20:12:05Z","cross_cats_sorted":[],"title_canon_sha256":"9e8a5fbdd5b08f9956c15800f4ec16e267fc2fefd43da04b6fde86c83afc3a5f","abstract_canon_sha256":"c14da4bf21ebde1c2b2285858227523074832b8997bc4f479748788e754abadd"},"schema_version":"1.0"},"canonical_sha256":"c1f811900e4fc11c205c5d6a5853b66fdf03391e212d83d627a694ccd737ef77","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:50:19.622160Z","signature_b64":"cUhdoqHQddAVLGvWNnOShPSAoIu56LnDWKsnKup9oIO5iuWb3qq+ZfIPJP4wBGOd+/jpJm3/WYmqi9L0D4WICQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"c1f811900e4fc11c205c5d6a5853b66fdf03391e212d83d627a694ccd737ef77","last_reissued_at":"2026-05-18T00:50:19.621426Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:50:19.621426Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1607.08624","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":"2026-05-18T00:50:19Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"dEAAJ6tFD4bsLno9gQTZp5Dv5+QqA+Vkp/zxNOyOj4rIrBFpnnNSby23svptReP706mjWAzGImRXjEwy/qmrBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T21:11:30.398114Z"},"content_sha256":"19446b26dc38904fb1bb3d9942da3208b66fa1b71ecc47cf8dc37dea7f00fefa","schema_version":"1.0","event_id":"sha256:19446b26dc38904fb1bb3d9942da3208b66fa1b71ecc47cf8dc37dea7f00fefa"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2016:YH4BDEAOJ7ARYIC4LVVFQU5WN7","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Alternative structure of TiO2 with higher energy valence band edge","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mtrl-sci","authors_text":"Marvin L. Cohen, Peter Y. Yu, Sinisa Coh, Steven G. Louie, Susumu Saito, Yuta Aoki","submitted_at":"2016-07-28T20:12:05Z","abstract_excerpt":"We propose an alternative structure of TiO2 anatase that has a higher energy oxygen p-like valence band maximum than the pristine TiO2 anatase and thus has a much better alignment with the water splitting levels. This alternative structure is unique when considering a large subspace of possible structural distortions of TiO2 anatase. We propose two routes towards this state and argue that one of them might have been realized in the recently discovered so-called black TiO2."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1607.08624","kind":"arxiv","version":2},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"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":"2026-05-18T00:50:19Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"9or9CpXHTP860JZFA3T5/mlqCCXe0JEQVr36h4ZrwJJVZNtEV7h+pI8rtbG4/n42Qd2qNRLIeiMETSX4Qsq5Bg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T21:11:30.398473Z"},"content_sha256":"323c0d43dc3721d7e585e9424c6cea0e2ce3962047f05ce4060653f96d7d3e11","schema_version":"1.0","event_id":"sha256:323c0d43dc3721d7e585e9424c6cea0e2ce3962047f05ce4060653f96d7d3e11"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/YH4BDEAOJ7ARYIC4LVVFQU5WN7/bundle.json","state_url":"https://pith.science/pith/YH4BDEAOJ7ARYIC4LVVFQU5WN7/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/YH4BDEAOJ7ARYIC4LVVFQU5WN7/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":"2026-06-02T21:11:30Z","links":{"resolver":"https://pith.science/pith/YH4BDEAOJ7ARYIC4LVVFQU5WN7","bundle":"https://pith.science/pith/YH4BDEAOJ7ARYIC4LVVFQU5WN7/bundle.json","state":"https://pith.science/pith/YH4BDEAOJ7ARYIC4LVVFQU5WN7/state.json","well_known_bundle":"https://pith.science/.well-known/pith/YH4BDEAOJ7ARYIC4LVVFQU5WN7/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:YH4BDEAOJ7ARYIC4LVVFQU5WN7","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":"c14da4bf21ebde1c2b2285858227523074832b8997bc4f479748788e754abadd","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2016-07-28T20:12:05Z","title_canon_sha256":"9e8a5fbdd5b08f9956c15800f4ec16e267fc2fefd43da04b6fde86c83afc3a5f"},"schema_version":"1.0","source":{"id":"1607.08624","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1607.08624","created_at":"2026-05-18T00:50:19Z"},{"alias_kind":"arxiv_version","alias_value":"1607.08624v2","created_at":"2026-05-18T00:50:19Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1607.08624","created_at":"2026-05-18T00:50:19Z"},{"alias_kind":"pith_short_12","alias_value":"YH4BDEAOJ7AR","created_at":"2026-05-18T12:30:53Z"},{"alias_kind":"pith_short_16","alias_value":"YH4BDEAOJ7ARYIC4","created_at":"2026-05-18T12:30:53Z"},{"alias_kind":"pith_short_8","alias_value":"YH4BDEAO","created_at":"2026-05-18T12:30:53Z"}],"graph_snapshots":[{"event_id":"sha256:323c0d43dc3721d7e585e9424c6cea0e2ce3962047f05ce4060653f96d7d3e11","target":"graph","created_at":"2026-05-18T00:50:19Z","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"},"paper":{"abstract_excerpt":"We propose an alternative structure of TiO2 anatase that has a higher energy oxygen p-like valence band maximum than the pristine TiO2 anatase and thus has a much better alignment with the water splitting levels. This alternative structure is unique when considering a large subspace of possible structural distortions of TiO2 anatase. We propose two routes towards this state and argue that one of them might have been realized in the recently discovered so-called black TiO2.","authors_text":"Marvin L. Cohen, Peter Y. Yu, Sinisa Coh, Steven G. Louie, Susumu Saito, Yuta Aoki","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2016-07-28T20:12:05Z","title":"Alternative structure of TiO2 with higher energy valence band edge"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1607.08624","kind":"arxiv","version":2},"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":"sha256:19446b26dc38904fb1bb3d9942da3208b66fa1b71ecc47cf8dc37dea7f00fefa","target":"record","created_at":"2026-05-18T00:50:19Z","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":"c14da4bf21ebde1c2b2285858227523074832b8997bc4f479748788e754abadd","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2016-07-28T20:12:05Z","title_canon_sha256":"9e8a5fbdd5b08f9956c15800f4ec16e267fc2fefd43da04b6fde86c83afc3a5f"},"schema_version":"1.0","source":{"id":"1607.08624","kind":"arxiv","version":2}},"canonical_sha256":"c1f811900e4fc11c205c5d6a5853b66fdf03391e212d83d627a694ccd737ef77","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"c1f811900e4fc11c205c5d6a5853b66fdf03391e212d83d627a694ccd737ef77","first_computed_at":"2026-05-18T00:50:19.621426Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:50:19.621426Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"cUhdoqHQddAVLGvWNnOShPSAoIu56LnDWKsnKup9oIO5iuWb3qq+ZfIPJP4wBGOd+/jpJm3/WYmqi9L0D4WICQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:50:19.622160Z","signed_message":"canonical_sha256_bytes"},"source_id":"1607.08624","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:19446b26dc38904fb1bb3d9942da3208b66fa1b71ecc47cf8dc37dea7f00fefa","sha256:323c0d43dc3721d7e585e9424c6cea0e2ce3962047f05ce4060653f96d7d3e11"],"state_sha256":"af59619bc1b4a44791ab6efd8969d297afc7b1753e6837ccca1a7e7183942de2"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"H+BAS3Y52FjJE2YKKhOju6/40mAEEXz+edWllyJnM4w4NaHXDgHsAMu4776fqhL062NiT7p0dnbugpM/ZerqDQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-02T21:11:30.400577Z","bundle_sha256":"45edbae9b336933f6ba19544a3ef32e876740130531527a268e02fe4b19a2039"}}