{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:GALRHMF2ZVUFHBYKG6NBYQV3BU","short_pith_number":"pith:GALRHMF2","canonical_record":{"source":{"id":"1812.06666","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2018-12-17T09:31:36Z","cross_cats_sorted":[],"title_canon_sha256":"4e1acfb588a3c252e65d98309b384070f5ffb7a05432daf0fb04ee19d7ae810a","abstract_canon_sha256":"5ccde5ce19e51c6044ef081444348346e1b1f72939d4ea29b812941b0ac6e838"},"schema_version":"1.0"},"canonical_sha256":"301713b0bacd6853870a379a1c42bb0d25a6854984b2fa432ff1bf6d7ac9e475","source":{"kind":"arxiv","id":"1812.06666","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1812.06666","created_at":"2026-05-17T23:51:30Z"},{"alias_kind":"arxiv_version","alias_value":"1812.06666v2","created_at":"2026-05-17T23:51:30Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1812.06666","created_at":"2026-05-17T23:51:30Z"},{"alias_kind":"pith_short_12","alias_value":"GALRHMF2ZVUF","created_at":"2026-05-18T12:32:25Z"},{"alias_kind":"pith_short_16","alias_value":"GALRHMF2ZVUFHBYK","created_at":"2026-05-18T12:32:25Z"},{"alias_kind":"pith_short_8","alias_value":"GALRHMF2","created_at":"2026-05-18T12:32:25Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:GALRHMF2ZVUFHBYKG6NBYQV3BU","target":"record","payload":{"canonical_record":{"source":{"id":"1812.06666","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2018-12-17T09:31:36Z","cross_cats_sorted":[],"title_canon_sha256":"4e1acfb588a3c252e65d98309b384070f5ffb7a05432daf0fb04ee19d7ae810a","abstract_canon_sha256":"5ccde5ce19e51c6044ef081444348346e1b1f72939d4ea29b812941b0ac6e838"},"schema_version":"1.0"},"canonical_sha256":"301713b0bacd6853870a379a1c42bb0d25a6854984b2fa432ff1bf6d7ac9e475","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:51:30.515210Z","signature_b64":"8vBXBWY6AiNL2xxWxPd60wsOfEXBQ0A8JipZH5IbuQe7C5MB/eZQSM/G2qGRvw9NpUMJcG3Kelxl0KmAvOCZDw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"301713b0bacd6853870a379a1c42bb0d25a6854984b2fa432ff1bf6d7ac9e475","last_reissued_at":"2026-05-17T23:51:30.514785Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:51:30.514785Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1812.06666","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":"2026-05-17T23:51:30Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"N4NoCDbIkgPQFSU67G29cIwCFj8yDdflSLCUecNb77JGWau1ricxEkcUFb3kNODLomKNU/oNU8EPsgJoCBreCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-05T16:25:25.971109Z"},"content_sha256":"c657208b2da956c5ed75d5fed83c7ab4e4c19b9b7d1751d5dc2a3c6d42510ceb","schema_version":"1.0","event_id":"sha256:c657208b2da956c5ed75d5fed83c7ab4e4c19b9b7d1751d5dc2a3c6d42510ceb"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:GALRHMF2ZVUFHBYKG6NBYQV3BU","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Discovering new two-dimensional topological insulators from computational screening","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mtrl-sci","authors_text":"Daniele Torelli, Erik Andersen, Kristian S. Thygesen, Takuya Okugawa, Thomas Olsen, Thorsten Deilmann","submitted_at":"2018-12-17T09:31:36Z","abstract_excerpt":"We have performed a computational screening of topological two-dimensional (2D) materials from the Computational 2D Materials Database (C2DB) employing density functional theory. A full \\textit{ab initio} scheme for calculating hybrid Wannier functions directly from the Kohn-Sham orbitals has been implemented and the method was used to extract $\\mathbb{Z}_2$ indices, Chern numbers and Mirror Chern numbers of 3331 2D systems including both experimentally known and hypothetical 2D materials. We have found a total of 46 quantum spin Hall insulators, 7 quantum anomalous Hall insulators and 9 cryst"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1812.06666","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":"2026-05-17T23:51:30Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"8i9RDnlxK4cG4WF+9GLkJHi0UXxh/hXRf90hOnDU4yiKoVlpZvgvTY0yn3jDZZy733sjQC2O6URsdyQvfP9sCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-05T16:25:25.971460Z"},"content_sha256":"4500e06375c91979339f7dd37ae2cd5d913562cc77d084ad62dc605aa9932e03","schema_version":"1.0","event_id":"sha256:4500e06375c91979339f7dd37ae2cd5d913562cc77d084ad62dc605aa9932e03"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/GALRHMF2ZVUFHBYKG6NBYQV3BU/bundle.json","state_url":"https://pith.science/pith/GALRHMF2ZVUFHBYKG6NBYQV3BU/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/GALRHMF2ZVUFHBYKG6NBYQV3BU/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":"2026-06-05T16:25:25Z","links":{"resolver":"https://pith.science/pith/GALRHMF2ZVUFHBYKG6NBYQV3BU","bundle":"https://pith.science/pith/GALRHMF2ZVUFHBYKG6NBYQV3BU/bundle.json","state":"https://pith.science/pith/GALRHMF2ZVUFHBYKG6NBYQV3BU/state.json","well_known_bundle":"https://pith.science/.well-known/pith/GALRHMF2ZVUFHBYKG6NBYQV3BU/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:GALRHMF2ZVUFHBYKG6NBYQV3BU","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":"5ccde5ce19e51c6044ef081444348346e1b1f72939d4ea29b812941b0ac6e838","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2018-12-17T09:31:36Z","title_canon_sha256":"4e1acfb588a3c252e65d98309b384070f5ffb7a05432daf0fb04ee19d7ae810a"},"schema_version":"1.0","source":{"id":"1812.06666","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1812.06666","created_at":"2026-05-17T23:51:30Z"},{"alias_kind":"arxiv_version","alias_value":"1812.06666v2","created_at":"2026-05-17T23:51:30Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1812.06666","created_at":"2026-05-17T23:51:30Z"},{"alias_kind":"pith_short_12","alias_value":"GALRHMF2ZVUF","created_at":"2026-05-18T12:32:25Z"},{"alias_kind":"pith_short_16","alias_value":"GALRHMF2ZVUFHBYK","created_at":"2026-05-18T12:32:25Z"},{"alias_kind":"pith_short_8","alias_value":"GALRHMF2","created_at":"2026-05-18T12:32:25Z"}],"graph_snapshots":[{"event_id":"sha256:4500e06375c91979339f7dd37ae2cd5d913562cc77d084ad62dc605aa9932e03","target":"graph","created_at":"2026-05-17T23:51:30Z","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 have performed a computational screening of topological two-dimensional (2D) materials from the Computational 2D Materials Database (C2DB) employing density functional theory. A full \\textit{ab initio} scheme for calculating hybrid Wannier functions directly from the Kohn-Sham orbitals has been implemented and the method was used to extract $\\mathbb{Z}_2$ indices, Chern numbers and Mirror Chern numbers of 3331 2D systems including both experimentally known and hypothetical 2D materials. We have found a total of 46 quantum spin Hall insulators, 7 quantum anomalous Hall insulators and 9 cryst","authors_text":"Daniele Torelli, Erik Andersen, Kristian S. Thygesen, Takuya Okugawa, Thomas Olsen, Thorsten Deilmann","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2018-12-17T09:31:36Z","title":"Discovering new two-dimensional topological insulators from computational screening"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1812.06666","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:c657208b2da956c5ed75d5fed83c7ab4e4c19b9b7d1751d5dc2a3c6d42510ceb","target":"record","created_at":"2026-05-17T23:51:30Z","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":"5ccde5ce19e51c6044ef081444348346e1b1f72939d4ea29b812941b0ac6e838","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2018-12-17T09:31:36Z","title_canon_sha256":"4e1acfb588a3c252e65d98309b384070f5ffb7a05432daf0fb04ee19d7ae810a"},"schema_version":"1.0","source":{"id":"1812.06666","kind":"arxiv","version":2}},"canonical_sha256":"301713b0bacd6853870a379a1c42bb0d25a6854984b2fa432ff1bf6d7ac9e475","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"301713b0bacd6853870a379a1c42bb0d25a6854984b2fa432ff1bf6d7ac9e475","first_computed_at":"2026-05-17T23:51:30.514785Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:51:30.514785Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"8vBXBWY6AiNL2xxWxPd60wsOfEXBQ0A8JipZH5IbuQe7C5MB/eZQSM/G2qGRvw9NpUMJcG3Kelxl0KmAvOCZDw==","signature_status":"signed_v1","signed_at":"2026-05-17T23:51:30.515210Z","signed_message":"canonical_sha256_bytes"},"source_id":"1812.06666","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:c657208b2da956c5ed75d5fed83c7ab4e4c19b9b7d1751d5dc2a3c6d42510ceb","sha256:4500e06375c91979339f7dd37ae2cd5d913562cc77d084ad62dc605aa9932e03"],"state_sha256":"e0ab79470647738998d3503c76aa5870eedd761d1009bb620293506bd62e9d5c"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"c+A+vCL2M/+dpMrU33qv2uy5PUs8X3B6ovann09rESU1U/xVxF3ZZcMqGW5Jx5p/nqi7wbePgtxn9jq1EFkBCA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-05T16:25:25.973344Z","bundle_sha256":"5d8f11d4a2b009ba1d8512259148df00d4e16ee71a509f28ab8dc82a13412b76"}}