{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2014:KD7YU7T22XW7EEMT575BKZMSDI","short_pith_number":"pith:KD7YU7T2","canonical_record":{"source":{"id":"1406.0307","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2014-06-02T09:45:47Z","cross_cats_sorted":[],"title_canon_sha256":"51a9b891477f8c7540aea9040368a51347c907c6398776d63fbd98f32c8b90cb","abstract_canon_sha256":"3719f8d5a765bf1860d23c9cde7404dd9c7ee2bfea1f15b0bbd23c2e40082c38"},"schema_version":"1.0"},"canonical_sha256":"50ff8a7e7ad5edf21193effa1565921a1dbcd5d88a68808aa0abdd66110e4ebb","source":{"kind":"arxiv","id":"1406.0307","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1406.0307","created_at":"2026-05-18T01:43:03Z"},{"alias_kind":"arxiv_version","alias_value":"1406.0307v1","created_at":"2026-05-18T01:43:03Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1406.0307","created_at":"2026-05-18T01:43:03Z"},{"alias_kind":"pith_short_12","alias_value":"KD7YU7T22XW7","created_at":"2026-05-18T12:28:35Z"},{"alias_kind":"pith_short_16","alias_value":"KD7YU7T22XW7EEMT","created_at":"2026-05-18T12:28:35Z"},{"alias_kind":"pith_short_8","alias_value":"KD7YU7T2","created_at":"2026-05-18T12:28:35Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2014:KD7YU7T22XW7EEMT575BKZMSDI","target":"record","payload":{"canonical_record":{"source":{"id":"1406.0307","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2014-06-02T09:45:47Z","cross_cats_sorted":[],"title_canon_sha256":"51a9b891477f8c7540aea9040368a51347c907c6398776d63fbd98f32c8b90cb","abstract_canon_sha256":"3719f8d5a765bf1860d23c9cde7404dd9c7ee2bfea1f15b0bbd23c2e40082c38"},"schema_version":"1.0"},"canonical_sha256":"50ff8a7e7ad5edf21193effa1565921a1dbcd5d88a68808aa0abdd66110e4ebb","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:43:03.011636Z","signature_b64":"s3KgDSdbTHhgeyhuSbgnivZowXQ30aBDKg5DPCf1Gewxj56sEMrBR24fvYAF9BwHmIzUGKfYk+7I4juEO12tAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"50ff8a7e7ad5edf21193effa1565921a1dbcd5d88a68808aa0abdd66110e4ebb","last_reissued_at":"2026-05-18T01:43:03.011247Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:43:03.011247Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1406.0307","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":"2026-05-18T01:43:03Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"EMFnJHc/0IRF6fRg4yFBsfj06WqFIjw/SXRqiXFaK2oOFkZ48E4KyR/cP7O7Q7KiRCcii5bW+NmA4FBArtykDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T22:25:10.387809Z"},"content_sha256":"da6ed04c13b7c4eb8449a52d668a5f3b371dd3707b3c4a6e62fa6249f6a8ecfa","schema_version":"1.0","event_id":"sha256:da6ed04c13b7c4eb8449a52d668a5f3b371dd3707b3c4a6e62fa6249f6a8ecfa"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2014:KD7YU7T22XW7EEMT575BKZMSDI","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"CPT theorem and classification of topological insulators and superconductors","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.str-el","authors_text":"Chang-Tse Hsieh, Shinsei Ryu, Takahiro Morimoto","submitted_at":"2014-06-02T09:45:47Z","abstract_excerpt":"We present a systematic topological classification of fermionic and bosonic topological phases protected by time-reversal, particle-hole, parity, and combination of these symmetries. We use two complementary approaches: one in terms of K-theory classification of gapped quadratic fermion theories with symmetries, and the other in terms of the K-matrix theory description of the edge theory of (2+1)-dimensional bulk theories. The first approach is specific to free fermion theories in general spatial dimensions while the second approach is limited to two spatial dimensions but incorporates effects"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1406.0307","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":"2026-05-18T01:43:03Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"PBIeKRfOH8F3ywm0vOTxZWdURjhGaVOvA6ijFJscBleDoyEuj1phIXc2QoA/6eZIY1z7DlG8ouMdb51O5A6FCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T22:25:10.388152Z"},"content_sha256":"791b3f910e1e85961e7d4832c65e4816ec44b1d0fc8c9fdc6ab134d218d8aaa8","schema_version":"1.0","event_id":"sha256:791b3f910e1e85961e7d4832c65e4816ec44b1d0fc8c9fdc6ab134d218d8aaa8"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/KD7YU7T22XW7EEMT575BKZMSDI/bundle.json","state_url":"https://pith.science/pith/KD7YU7T22XW7EEMT575BKZMSDI/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/KD7YU7T22XW7EEMT575BKZMSDI/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":"2026-06-02T22:25:10Z","links":{"resolver":"https://pith.science/pith/KD7YU7T22XW7EEMT575BKZMSDI","bundle":"https://pith.science/pith/KD7YU7T22XW7EEMT575BKZMSDI/bundle.json","state":"https://pith.science/pith/KD7YU7T22XW7EEMT575BKZMSDI/state.json","well_known_bundle":"https://pith.science/.well-known/pith/KD7YU7T22XW7EEMT575BKZMSDI/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:KD7YU7T22XW7EEMT575BKZMSDI","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":"3719f8d5a765bf1860d23c9cde7404dd9c7ee2bfea1f15b0bbd23c2e40082c38","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2014-06-02T09:45:47Z","title_canon_sha256":"51a9b891477f8c7540aea9040368a51347c907c6398776d63fbd98f32c8b90cb"},"schema_version":"1.0","source":{"id":"1406.0307","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1406.0307","created_at":"2026-05-18T01:43:03Z"},{"alias_kind":"arxiv_version","alias_value":"1406.0307v1","created_at":"2026-05-18T01:43:03Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1406.0307","created_at":"2026-05-18T01:43:03Z"},{"alias_kind":"pith_short_12","alias_value":"KD7YU7T22XW7","created_at":"2026-05-18T12:28:35Z"},{"alias_kind":"pith_short_16","alias_value":"KD7YU7T22XW7EEMT","created_at":"2026-05-18T12:28:35Z"},{"alias_kind":"pith_short_8","alias_value":"KD7YU7T2","created_at":"2026-05-18T12:28:35Z"}],"graph_snapshots":[{"event_id":"sha256:791b3f910e1e85961e7d4832c65e4816ec44b1d0fc8c9fdc6ab134d218d8aaa8","target":"graph","created_at":"2026-05-18T01:43:03Z","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 present a systematic topological classification of fermionic and bosonic topological phases protected by time-reversal, particle-hole, parity, and combination of these symmetries. We use two complementary approaches: one in terms of K-theory classification of gapped quadratic fermion theories with symmetries, and the other in terms of the K-matrix theory description of the edge theory of (2+1)-dimensional bulk theories. The first approach is specific to free fermion theories in general spatial dimensions while the second approach is limited to two spatial dimensions but incorporates effects","authors_text":"Chang-Tse Hsieh, Shinsei Ryu, Takahiro Morimoto","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2014-06-02T09:45:47Z","title":"CPT theorem and classification of topological insulators and superconductors"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1406.0307","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:da6ed04c13b7c4eb8449a52d668a5f3b371dd3707b3c4a6e62fa6249f6a8ecfa","target":"record","created_at":"2026-05-18T01:43:03Z","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":"3719f8d5a765bf1860d23c9cde7404dd9c7ee2bfea1f15b0bbd23c2e40082c38","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2014-06-02T09:45:47Z","title_canon_sha256":"51a9b891477f8c7540aea9040368a51347c907c6398776d63fbd98f32c8b90cb"},"schema_version":"1.0","source":{"id":"1406.0307","kind":"arxiv","version":1}},"canonical_sha256":"50ff8a7e7ad5edf21193effa1565921a1dbcd5d88a68808aa0abdd66110e4ebb","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"50ff8a7e7ad5edf21193effa1565921a1dbcd5d88a68808aa0abdd66110e4ebb","first_computed_at":"2026-05-18T01:43:03.011247Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:43:03.011247Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"s3KgDSdbTHhgeyhuSbgnivZowXQ30aBDKg5DPCf1Gewxj56sEMrBR24fvYAF9BwHmIzUGKfYk+7I4juEO12tAA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:43:03.011636Z","signed_message":"canonical_sha256_bytes"},"source_id":"1406.0307","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:da6ed04c13b7c4eb8449a52d668a5f3b371dd3707b3c4a6e62fa6249f6a8ecfa","sha256:791b3f910e1e85961e7d4832c65e4816ec44b1d0fc8c9fdc6ab134d218d8aaa8"],"state_sha256":"d9d439cddeb324d2246bed4e5fcbb8234827949214f1f94da1eafb2159a30184"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"yNlccGsAIJOgFFivKthxmZPa74FCrOx7W8j8k7AUHS1FVSKwgq2HW0+BkXw7QafHXA7YQz1B1MTswcrHChCyAA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-02T22:25:10.390166Z","bundle_sha256":"d74869cb4242b597aeec1e293c1ac3f0e54d1af6bf311585c788b92b26227796"}}