{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2016:HNVQYEZGF7EIHOYGV53EVXD6KC","short_pith_number":"pith:HNVQYEZG","canonical_record":{"source":{"id":"1609.02274","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2016-09-08T05:06:02Z","cross_cats_sorted":[],"title_canon_sha256":"babb77b0caae928c115300220886e7f7db3514f23fc5bc7d0e6af4219f647220","abstract_canon_sha256":"e73bd61048344094162c0e33f6a92366b12fb248eff62b30e984eec3ee4d3720"},"schema_version":"1.0"},"canonical_sha256":"3b6b0c13262fc883bb06af764adc7e50963f5517c331863784faaa78d0a86f38","source":{"kind":"arxiv","id":"1609.02274","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1609.02274","created_at":"2026-05-18T00:48:17Z"},{"alias_kind":"arxiv_version","alias_value":"1609.02274v1","created_at":"2026-05-18T00:48:17Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1609.02274","created_at":"2026-05-18T00:48:17Z"},{"alias_kind":"pith_short_12","alias_value":"HNVQYEZGF7EI","created_at":"2026-05-18T12:30:19Z"},{"alias_kind":"pith_short_16","alias_value":"HNVQYEZGF7EIHOYG","created_at":"2026-05-18T12:30:19Z"},{"alias_kind":"pith_short_8","alias_value":"HNVQYEZG","created_at":"2026-05-18T12:30:19Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2016:HNVQYEZGF7EIHOYGV53EVXD6KC","target":"record","payload":{"canonical_record":{"source":{"id":"1609.02274","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2016-09-08T05:06:02Z","cross_cats_sorted":[],"title_canon_sha256":"babb77b0caae928c115300220886e7f7db3514f23fc5bc7d0e6af4219f647220","abstract_canon_sha256":"e73bd61048344094162c0e33f6a92366b12fb248eff62b30e984eec3ee4d3720"},"schema_version":"1.0"},"canonical_sha256":"3b6b0c13262fc883bb06af764adc7e50963f5517c331863784faaa78d0a86f38","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:48:17.126800Z","signature_b64":"da9OwPtL47I/LsiagFLU7zKdoOGyNTAxKxx8QbtoM0vv/MuAXk75RER8WgJczGyzpX2jvPC921ReirnEhxgRCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"3b6b0c13262fc883bb06af764adc7e50963f5517c331863784faaa78d0a86f38","last_reissued_at":"2026-05-18T00:48:17.126122Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:48:17.126122Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1609.02274","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":"2026-05-18T00:48:17Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"7a6RyOuaVexwv3DPFDJnPAEVCoxv1O+wk5U4gdp49Q7jQP3qnbYiBmP27T7NPuTTVhJoWXWJVYeP/qMT5hOkAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T21:14:15.207462Z"},"content_sha256":"5a6e52ce1339d30399ce16a0ae1bdf4c6f1317b3b878c48361fac4aa513e20b5","schema_version":"1.0","event_id":"sha256:5a6e52ce1339d30399ce16a0ae1bdf4c6f1317b3b878c48361fac4aa513e20b5"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2016:HNVQYEZGF7EIHOYGV53EVXD6KC","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Pressure-induced topological phase transition in polar semiconductor BiTeBr","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mtrl-sci","authors_text":"Atsuko Nakayama, Ayako Ohmura, Fumihiro Ishikawa, Manabu Kanou, Satoshi Nakano, Takao Sasagawa, Takayuki Ochiai, Yuh Yamada, Yuichiro Higuchi","submitted_at":"2016-09-08T05:06:02Z","abstract_excerpt":"We performed X-ray diffraction and electrical resistivity measurement up to pressures of 5 GPa and the first-principles calculations utilizing experimental structural parameters to investigate the pressure-induced topological phase transition in BiTeBr having a noncentrosymmetric layered structure (space group P3m1). The P3m1 structure remains stable up to pressures of 5 GPa; the ratio of lattice constants, c/a, has a minimum at pressures of 2.5 - 3 GPa. In the same range, the temperature dependence of resistivity changes from metallic to semiconducting at 3 GPa and has a plateau region betwee"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1609.02274","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":""},"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":"2026-05-18T00:48:17Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"gTNu2ygeu/3rU0kMPm3Bz5N1pg46iGYWu97yOde8fbQzmWlKL2WWQarCu7w3uhRaf4cXnyZxoACL7eGCUzeBCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T21:14:15.207816Z"},"content_sha256":"e59cc64b9caeec32ddb9d9db6b5b7101836b9f8277a7300cd9ff38fea7579403","schema_version":"1.0","event_id":"sha256:e59cc64b9caeec32ddb9d9db6b5b7101836b9f8277a7300cd9ff38fea7579403"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/HNVQYEZGF7EIHOYGV53EVXD6KC/bundle.json","state_url":"https://pith.science/pith/HNVQYEZGF7EIHOYGV53EVXD6KC/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/HNVQYEZGF7EIHOYGV53EVXD6KC/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":"2026-06-02T21:14:15Z","links":{"resolver":"https://pith.science/pith/HNVQYEZGF7EIHOYGV53EVXD6KC","bundle":"https://pith.science/pith/HNVQYEZGF7EIHOYGV53EVXD6KC/bundle.json","state":"https://pith.science/pith/HNVQYEZGF7EIHOYGV53EVXD6KC/state.json","well_known_bundle":"https://pith.science/.well-known/pith/HNVQYEZGF7EIHOYGV53EVXD6KC/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:HNVQYEZGF7EIHOYGV53EVXD6KC","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":"e73bd61048344094162c0e33f6a92366b12fb248eff62b30e984eec3ee4d3720","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2016-09-08T05:06:02Z","title_canon_sha256":"babb77b0caae928c115300220886e7f7db3514f23fc5bc7d0e6af4219f647220"},"schema_version":"1.0","source":{"id":"1609.02274","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1609.02274","created_at":"2026-05-18T00:48:17Z"},{"alias_kind":"arxiv_version","alias_value":"1609.02274v1","created_at":"2026-05-18T00:48:17Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1609.02274","created_at":"2026-05-18T00:48:17Z"},{"alias_kind":"pith_short_12","alias_value":"HNVQYEZGF7EI","created_at":"2026-05-18T12:30:19Z"},{"alias_kind":"pith_short_16","alias_value":"HNVQYEZGF7EIHOYG","created_at":"2026-05-18T12:30:19Z"},{"alias_kind":"pith_short_8","alias_value":"HNVQYEZG","created_at":"2026-05-18T12:30:19Z"}],"graph_snapshots":[{"event_id":"sha256:e59cc64b9caeec32ddb9d9db6b5b7101836b9f8277a7300cd9ff38fea7579403","target":"graph","created_at":"2026-05-18T00:48:17Z","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 performed X-ray diffraction and electrical resistivity measurement up to pressures of 5 GPa and the first-principles calculations utilizing experimental structural parameters to investigate the pressure-induced topological phase transition in BiTeBr having a noncentrosymmetric layered structure (space group P3m1). The P3m1 structure remains stable up to pressures of 5 GPa; the ratio of lattice constants, c/a, has a minimum at pressures of 2.5 - 3 GPa. In the same range, the temperature dependence of resistivity changes from metallic to semiconducting at 3 GPa and has a plateau region betwee","authors_text":"Atsuko Nakayama, Ayako Ohmura, Fumihiro Ishikawa, Manabu Kanou, Satoshi Nakano, Takao Sasagawa, Takayuki Ochiai, Yuh Yamada, Yuichiro Higuchi","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2016-09-08T05:06:02Z","title":"Pressure-induced topological phase transition in polar semiconductor BiTeBr"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1609.02274","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":"sha256:5a6e52ce1339d30399ce16a0ae1bdf4c6f1317b3b878c48361fac4aa513e20b5","target":"record","created_at":"2026-05-18T00:48:17Z","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":"e73bd61048344094162c0e33f6a92366b12fb248eff62b30e984eec3ee4d3720","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2016-09-08T05:06:02Z","title_canon_sha256":"babb77b0caae928c115300220886e7f7db3514f23fc5bc7d0e6af4219f647220"},"schema_version":"1.0","source":{"id":"1609.02274","kind":"arxiv","version":1}},"canonical_sha256":"3b6b0c13262fc883bb06af764adc7e50963f5517c331863784faaa78d0a86f38","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"3b6b0c13262fc883bb06af764adc7e50963f5517c331863784faaa78d0a86f38","first_computed_at":"2026-05-18T00:48:17.126122Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:48:17.126122Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"da9OwPtL47I/LsiagFLU7zKdoOGyNTAxKxx8QbtoM0vv/MuAXk75RER8WgJczGyzpX2jvPC921ReirnEhxgRCQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:48:17.126800Z","signed_message":"canonical_sha256_bytes"},"source_id":"1609.02274","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:5a6e52ce1339d30399ce16a0ae1bdf4c6f1317b3b878c48361fac4aa513e20b5","sha256:e59cc64b9caeec32ddb9d9db6b5b7101836b9f8277a7300cd9ff38fea7579403"],"state_sha256":"dc6f872cd7946316f6566f0b43476c35b2519cff8d8fdf866c31ae13175ac0c6"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"F6vVUsxGxznf4mS6HLShGbwxfOaRJg870ouqnizQtHTpJbTT5O+sBODjNX4EKTtXmVVsM3WajvLzybDOis3hAQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-02T21:14:15.209794Z","bundle_sha256":"a8a780c6eff6948d8537dd158592cf746cbb568be704248b6759b28f823370ed"}}