{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:SHCRRUORAMH4QMP54LP5A3AXUU","short_pith_number":"pith:SHCRRUOR","canonical_record":{"source":{"id":"1501.02643","kind":"arxiv","version":9},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2015-01-12T13:42:22Z","cross_cats_sorted":["cond-mat.other"],"title_canon_sha256":"64d2703ffd292d39d6a8ad573bc9e52e3289f874dc28774fbb2ccbbd3b1b4fd9","abstract_canon_sha256":"f497d7e525e4bb323646ef44c6d7cce34c4f6388a660ae4bd5f5efaee7807cad"},"schema_version":"1.0"},"canonical_sha256":"91c518d1d1030fc831fde2dfd06c17a5218a5777b40752d1d8350431ae120cd5","source":{"kind":"arxiv","id":"1501.02643","version":9},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1501.02643","created_at":"2026-05-18T01:37:35Z"},{"alias_kind":"arxiv_version","alias_value":"1501.02643v9","created_at":"2026-05-18T01:37:35Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1501.02643","created_at":"2026-05-18T01:37:35Z"},{"alias_kind":"pith_short_12","alias_value":"SHCRRUORAMH4","created_at":"2026-05-18T12:29:42Z"},{"alias_kind":"pith_short_16","alias_value":"SHCRRUORAMH4QMP5","created_at":"2026-05-18T12:29:42Z"},{"alias_kind":"pith_short_8","alias_value":"SHCRRUOR","created_at":"2026-05-18T12:29:42Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:SHCRRUORAMH4QMP54LP5A3AXUU","target":"record","payload":{"canonical_record":{"source":{"id":"1501.02643","kind":"arxiv","version":9},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2015-01-12T13:42:22Z","cross_cats_sorted":["cond-mat.other"],"title_canon_sha256":"64d2703ffd292d39d6a8ad573bc9e52e3289f874dc28774fbb2ccbbd3b1b4fd9","abstract_canon_sha256":"f497d7e525e4bb323646ef44c6d7cce34c4f6388a660ae4bd5f5efaee7807cad"},"schema_version":"1.0"},"canonical_sha256":"91c518d1d1030fc831fde2dfd06c17a5218a5777b40752d1d8350431ae120cd5","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:37:35.250940Z","signature_b64":"CmpIyBDgauSZvnfSBKEqX0ynK244THqZmUA9Q9O7UtGQEQMII7lCF6nS//5vzEy8TIOldQ0cH7zoC2D9jwnACg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"91c518d1d1030fc831fde2dfd06c17a5218a5777b40752d1d8350431ae120cd5","last_reissued_at":"2026-05-18T01:37:35.250364Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:37:35.250364Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1501.02643","source_version":9,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T01:37:35Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"1BIjjUXkixOIgQQZ4tqBLTWSZ7WsEIrkW6xu3bIG5ivg+ccjwGaxL0HT7oxZSH0eSD6MlLOWUq98MFE8ySPOBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-29T21:03:31.066272Z"},"content_sha256":"ef3384ea5197a948fa99d6635c44b16354af6699ef120ce453c938153e5aab6f","schema_version":"1.0","event_id":"sha256:ef3384ea5197a948fa99d6635c44b16354af6699ef120ce453c938153e5aab6f"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:SHCRRUORAMH4QMP54LP5A3AXUU","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"A toy model for quantum spin Hall effect","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.other"],"primary_cat":"cond-mat.mes-hall","authors_text":"J. Nsofini, S. A. Owerre","submitted_at":"2015-01-12T13:42:22Z","abstract_excerpt":"In this Communication, we investigate a toy model of three-dimensional topological insulator surface, coupled homogeneously to a fictitious pseudo spin-$\\frac{1}{2}$ particle. We show that this toy model captures the interesting features of topological insulator surface states, which include topological quantum phase transition and quantum spin hall effect. We further incorporate an out-of-plane magnetic field and obtain the Landau levels."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1501.02643","kind":"arxiv","version":9},"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":"2026-05-18T01:37:35Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"q4AdcNY7BxdXSF0x6VIV5/4v+TMD8wmitjx2KEg8bxL9sY4rpXVouLKiortp6ofnsFRdLHqlJW5y01CgVKJ+CA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-29T21:03:31.066711Z"},"content_sha256":"5256ceece872a5ba24a4f26d249f46b72b0acf7b22e1366cb7ae08b49e59ecac","schema_version":"1.0","event_id":"sha256:5256ceece872a5ba24a4f26d249f46b72b0acf7b22e1366cb7ae08b49e59ecac"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/SHCRRUORAMH4QMP54LP5A3AXUU/bundle.json","state_url":"https://pith.science/pith/SHCRRUORAMH4QMP54LP5A3AXUU/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/SHCRRUORAMH4QMP54LP5A3AXUU/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":"2026-05-29T21:03:31Z","links":{"resolver":"https://pith.science/pith/SHCRRUORAMH4QMP54LP5A3AXUU","bundle":"https://pith.science/pith/SHCRRUORAMH4QMP54LP5A3AXUU/bundle.json","state":"https://pith.science/pith/SHCRRUORAMH4QMP54LP5A3AXUU/state.json","well_known_bundle":"https://pith.science/.well-known/pith/SHCRRUORAMH4QMP54LP5A3AXUU/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:SHCRRUORAMH4QMP54LP5A3AXUU","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":"f497d7e525e4bb323646ef44c6d7cce34c4f6388a660ae4bd5f5efaee7807cad","cross_cats_sorted":["cond-mat.other"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2015-01-12T13:42:22Z","title_canon_sha256":"64d2703ffd292d39d6a8ad573bc9e52e3289f874dc28774fbb2ccbbd3b1b4fd9"},"schema_version":"1.0","source":{"id":"1501.02643","kind":"arxiv","version":9}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1501.02643","created_at":"2026-05-18T01:37:35Z"},{"alias_kind":"arxiv_version","alias_value":"1501.02643v9","created_at":"2026-05-18T01:37:35Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1501.02643","created_at":"2026-05-18T01:37:35Z"},{"alias_kind":"pith_short_12","alias_value":"SHCRRUORAMH4","created_at":"2026-05-18T12:29:42Z"},{"alias_kind":"pith_short_16","alias_value":"SHCRRUORAMH4QMP5","created_at":"2026-05-18T12:29:42Z"},{"alias_kind":"pith_short_8","alias_value":"SHCRRUOR","created_at":"2026-05-18T12:29:42Z"}],"graph_snapshots":[{"event_id":"sha256:5256ceece872a5ba24a4f26d249f46b72b0acf7b22e1366cb7ae08b49e59ecac","target":"graph","created_at":"2026-05-18T01:37:35Z","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":"In this Communication, we investigate a toy model of three-dimensional topological insulator surface, coupled homogeneously to a fictitious pseudo spin-$\\frac{1}{2}$ particle. We show that this toy model captures the interesting features of topological insulator surface states, which include topological quantum phase transition and quantum spin hall effect. We further incorporate an out-of-plane magnetic field and obtain the Landau levels.","authors_text":"J. Nsofini, S. A. Owerre","cross_cats":["cond-mat.other"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2015-01-12T13:42:22Z","title":"A toy model for quantum spin Hall effect"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1501.02643","kind":"arxiv","version":9},"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:ef3384ea5197a948fa99d6635c44b16354af6699ef120ce453c938153e5aab6f","target":"record","created_at":"2026-05-18T01:37:35Z","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":"f497d7e525e4bb323646ef44c6d7cce34c4f6388a660ae4bd5f5efaee7807cad","cross_cats_sorted":["cond-mat.other"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2015-01-12T13:42:22Z","title_canon_sha256":"64d2703ffd292d39d6a8ad573bc9e52e3289f874dc28774fbb2ccbbd3b1b4fd9"},"schema_version":"1.0","source":{"id":"1501.02643","kind":"arxiv","version":9}},"canonical_sha256":"91c518d1d1030fc831fde2dfd06c17a5218a5777b40752d1d8350431ae120cd5","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"91c518d1d1030fc831fde2dfd06c17a5218a5777b40752d1d8350431ae120cd5","first_computed_at":"2026-05-18T01:37:35.250364Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:37:35.250364Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"CmpIyBDgauSZvnfSBKEqX0ynK244THqZmUA9Q9O7UtGQEQMII7lCF6nS//5vzEy8TIOldQ0cH7zoC2D9jwnACg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:37:35.250940Z","signed_message":"canonical_sha256_bytes"},"source_id":"1501.02643","source_kind":"arxiv","source_version":9}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:ef3384ea5197a948fa99d6635c44b16354af6699ef120ce453c938153e5aab6f","sha256:5256ceece872a5ba24a4f26d249f46b72b0acf7b22e1366cb7ae08b49e59ecac"],"state_sha256":"a6b926be0eb657d9d682ff1d763adf7e78f907c8c1ac4e570d8ce53c759da099"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"PYit6JlA/XvC12EVvCY8K0HIxBlXWp+lkPb4s9L5ttKtaX0vBPkxcteDiGoi/bpgvXXBUYam8RQ29uiviZFuCw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-29T21:03:31.069479Z","bundle_sha256":"4d5eaeb91df0ccd247957bfce45fe2be5595e60a44545757f66519a05c876dc9"}}