{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2020:JAXWO4P6MMZSPEKCDR5V3L2QDL","short_pith_number":"pith:JAXWO4P6","canonical_record":{"source":{"id":"2005.14710","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2020-05-29T17:57:25Z","cross_cats_sorted":["cond-mat.mtrl-sci","cond-mat.str-el","cond-mat.supr-con"],"title_canon_sha256":"f7c7beb847b50a473df75300b6bea6d07dc81a76e000323d1b3dc8b0263c2e04","abstract_canon_sha256":"48404a247caa820db3ba6731caf83f556445a934fc615b438b3aff66be6635b0"},"schema_version":"1.0"},"canonical_sha256":"482f6771fe63332791421c7b5daf501ad9381f7ea7e6c57baffe9477322c1054","source":{"kind":"arxiv","id":"2005.14710","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2005.14710","created_at":"2026-07-05T01:06:44Z"},{"alias_kind":"arxiv_version","alias_value":"2005.14710v1","created_at":"2026-07-05T01:06:44Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2005.14710","created_at":"2026-07-05T01:06:44Z"},{"alias_kind":"pith_short_12","alias_value":"JAXWO4P6MMZS","created_at":"2026-07-05T01:06:44Z"},{"alias_kind":"pith_short_16","alias_value":"JAXWO4P6MMZSPEKC","created_at":"2026-07-05T01:06:44Z"},{"alias_kind":"pith_short_8","alias_value":"JAXWO4P6","created_at":"2026-07-05T01:06:44Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2020:JAXWO4P6MMZSPEKCDR5V3L2QDL","target":"record","payload":{"canonical_record":{"source":{"id":"2005.14710","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2020-05-29T17:57:25Z","cross_cats_sorted":["cond-mat.mtrl-sci","cond-mat.str-el","cond-mat.supr-con"],"title_canon_sha256":"f7c7beb847b50a473df75300b6bea6d07dc81a76e000323d1b3dc8b0263c2e04","abstract_canon_sha256":"48404a247caa820db3ba6731caf83f556445a934fc615b438b3aff66be6635b0"},"schema_version":"1.0"},"canonical_sha256":"482f6771fe63332791421c7b5daf501ad9381f7ea7e6c57baffe9477322c1054","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T01:06:44.163303Z","signature_b64":"4s+RIT6kyshy3RI7WI+FyDkXzjMyYd4nuA3EK79+yHki8h7vbGp34jIYTYUGNxsBXYAi/Y4ZQei4ISBSS4dmCw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"482f6771fe63332791421c7b5daf501ad9381f7ea7e6c57baffe9477322c1054","last_reissued_at":"2026-07-05T01:06:44.162863Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T01:06:44.162863Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2005.14710","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":"2026-07-05T01:06:44Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"/6M77B5u89S5SCphY/+Tz0kA5FIUA447eck4uUBGDxCEp0rfnYmX+3JtsoOeWl2AOGtFgvKjjwXau31PUOC4CA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-21T01:10:48.685526Z"},"content_sha256":"acde556dd128c7b1b3826f73c0af5722ca4d82a6b468a1c89a8d987c6e6cd1a9","schema_version":"1.0","event_id":"sha256:acde556dd128c7b1b3826f73c0af5722ca4d82a6b468a1c89a8d987c6e6cd1a9"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2020:JAXWO4P6MMZSPEKCDR5V3L2QDL","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Quasi-One-Dimensional Higher-Order Topological Insulators","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.mtrl-sci","cond-mat.str-el","cond-mat.supr-con"],"primary_cat":"cond-mat.mes-hall","authors_text":"Cheng-Cheng Liu, Chiho Yoon, Fan Zhang, Hongki Min","submitted_at":"2020-05-29T17:57:25Z","abstract_excerpt":"Quasi-1D materials Bi$_{4}$X$_{4}$ (X=Br,I) are prototype weak topological insulators (TI) in the $\\beta$ phase. For the $\\alpha$ phases, recent high-throughput database screening suggests that Bi$_{4}$Br$_{4}$ is a rare higher-order TI (HOTI) whereas Bi$_{4}$I$_{4}$ has trivial symmetry indicators. Here we show that in fact the two $\\alpha$ phases are both pristine HOTIs yet with distinct termination-dependent hinge state patterns by performing first-principles calculations, analyzing coupled-edge dimerizations, inspecting surface lattice structures, constructing tight-binding models, and est"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2005.14710","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/2005.14710/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":"2026-07-05T01:06:44Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"a+XcCzl0K//U85J89s3MGDAG+QOUyHk0HR/ChWFHpqwZro2we7BrG7IemjWLZ+vt30FSpDXwnzEdIiI3Vt0fBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-21T01:10:48.686065Z"},"content_sha256":"144ca73391c3a1f631638f16279bfe197a76ca299bfd97b8a3a2a02a49f0529d","schema_version":"1.0","event_id":"sha256:144ca73391c3a1f631638f16279bfe197a76ca299bfd97b8a3a2a02a49f0529d"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/JAXWO4P6MMZSPEKCDR5V3L2QDL/bundle.json","state_url":"https://pith.science/pith/JAXWO4P6MMZSPEKCDR5V3L2QDL/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/JAXWO4P6MMZSPEKCDR5V3L2QDL/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":"2026-08-21T01:10:48Z","links":{"resolver":"https://pith.science/pith/JAXWO4P6MMZSPEKCDR5V3L2QDL","bundle":"https://pith.science/pith/JAXWO4P6MMZSPEKCDR5V3L2QDL/bundle.json","state":"https://pith.science/pith/JAXWO4P6MMZSPEKCDR5V3L2QDL/state.json","well_known_bundle":"https://pith.science/.well-known/pith/JAXWO4P6MMZSPEKCDR5V3L2QDL/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:JAXWO4P6MMZSPEKCDR5V3L2QDL","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":"48404a247caa820db3ba6731caf83f556445a934fc615b438b3aff66be6635b0","cross_cats_sorted":["cond-mat.mtrl-sci","cond-mat.str-el","cond-mat.supr-con"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2020-05-29T17:57:25Z","title_canon_sha256":"f7c7beb847b50a473df75300b6bea6d07dc81a76e000323d1b3dc8b0263c2e04"},"schema_version":"1.0","source":{"id":"2005.14710","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2005.14710","created_at":"2026-07-05T01:06:44Z"},{"alias_kind":"arxiv_version","alias_value":"2005.14710v1","created_at":"2026-07-05T01:06:44Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2005.14710","created_at":"2026-07-05T01:06:44Z"},{"alias_kind":"pith_short_12","alias_value":"JAXWO4P6MMZS","created_at":"2026-07-05T01:06:44Z"},{"alias_kind":"pith_short_16","alias_value":"JAXWO4P6MMZSPEKC","created_at":"2026-07-05T01:06:44Z"},{"alias_kind":"pith_short_8","alias_value":"JAXWO4P6","created_at":"2026-07-05T01:06:44Z"}],"graph_snapshots":[{"event_id":"sha256:144ca73391c3a1f631638f16279bfe197a76ca299bfd97b8a3a2a02a49f0529d","target":"graph","created_at":"2026-07-05T01:06:44Z","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/2005.14710/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Quasi-1D materials Bi$_{4}$X$_{4}$ (X=Br,I) are prototype weak topological insulators (TI) in the $\\beta$ phase. For the $\\alpha$ phases, recent high-throughput database screening suggests that Bi$_{4}$Br$_{4}$ is a rare higher-order TI (HOTI) whereas Bi$_{4}$I$_{4}$ has trivial symmetry indicators. Here we show that in fact the two $\\alpha$ phases are both pristine HOTIs yet with distinct termination-dependent hinge state patterns by performing first-principles calculations, analyzing coupled-edge dimerizations, inspecting surface lattice structures, constructing tight-binding models, and est","authors_text":"Cheng-Cheng Liu, Chiho Yoon, Fan Zhang, Hongki Min","cross_cats":["cond-mat.mtrl-sci","cond-mat.str-el","cond-mat.supr-con"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2020-05-29T17:57:25Z","title":"Quasi-One-Dimensional Higher-Order Topological Insulators"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2005.14710","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:acde556dd128c7b1b3826f73c0af5722ca4d82a6b468a1c89a8d987c6e6cd1a9","target":"record","created_at":"2026-07-05T01:06:44Z","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":"48404a247caa820db3ba6731caf83f556445a934fc615b438b3aff66be6635b0","cross_cats_sorted":["cond-mat.mtrl-sci","cond-mat.str-el","cond-mat.supr-con"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2020-05-29T17:57:25Z","title_canon_sha256":"f7c7beb847b50a473df75300b6bea6d07dc81a76e000323d1b3dc8b0263c2e04"},"schema_version":"1.0","source":{"id":"2005.14710","kind":"arxiv","version":1}},"canonical_sha256":"482f6771fe63332791421c7b5daf501ad9381f7ea7e6c57baffe9477322c1054","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"482f6771fe63332791421c7b5daf501ad9381f7ea7e6c57baffe9477322c1054","first_computed_at":"2026-07-05T01:06:44.162863Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T01:06:44.162863Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"4s+RIT6kyshy3RI7WI+FyDkXzjMyYd4nuA3EK79+yHki8h7vbGp34jIYTYUGNxsBXYAi/Y4ZQei4ISBSS4dmCw==","signature_status":"signed_v1","signed_at":"2026-07-05T01:06:44.163303Z","signed_message":"canonical_sha256_bytes"},"source_id":"2005.14710","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:acde556dd128c7b1b3826f73c0af5722ca4d82a6b468a1c89a8d987c6e6cd1a9","sha256:144ca73391c3a1f631638f16279bfe197a76ca299bfd97b8a3a2a02a49f0529d"],"state_sha256":"854d0f57acfd7deea054ccb3bc1afcd8b9a0da0576ec79cbb9d3c57b70a2a84c"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"1XIwQLtx+2fI7UlrQkpxrkMHfEC5vQLL/3H1OpzlBxJpRZtNmy8VRCvJTefhxp5toFey3paIOoA2+ovnGEeZCg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-21T01:10:48.691184Z","bundle_sha256":"492005b185fd1e0586892960cfa75cab9071cbc9ad71dc841f3cd77f98ae4d3d"}}